1

                                                                     EXHIBIT 4.5


                            UNION PACIFIC CORPORATION

                                       TO

                              THE BANK OF NEW YORK
                                     Trustee





                                    Indenture

                            Dated as of April 1, 1998





                                 $1,391,752,600


                 (subject to increase to up to $1,546,391,750 in
                  the event and to the extent an over-allotment
                              option is exercised)


                         Convertible Junior Subordinated
                               Debentures Due 2028
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                                TABLE OF CONTENTS


                                                                            Page

                                    ARTICLE I

                       Definitions and Other Provisions of
                               General Application

SECTION 1.01.              Definitions.........................................3
SECTION 1.02.              Compliance Certificates and
                                    Opinions..................................14
SECTION 1.03.              Form of Documents Delivered to
                                    Trustee...................................15
SECTION 1.04.              Acts of Holders; Record Dates......................15
SECTION 1.05.              Notices, Etc., to Trustee and the
                                    Company...................................17
SECTION 1.06.              Notice to Holders; Waiver..........................18
SECTION 1.07.              Conflict with Trust Indenture Act..................19
SECTION 1.08.              Effect of Headings and Table of
                                    Contents..................................19
SECTION 1.09.              Successors and Assigns.............................19
SECTION 1.10.              Separability Clause................................19
SECTION 1.11.              Benefits of Indenture..............................19
SECTION 1.12.              Governing Law......................................19
SECTION 1.13.              Legal Holidays.....................................19


                                   ARTICLE II

                                 Security Forms

SECTION 2.01.              Forms Generally....................................20
SECTION 2.02.              Initial Issuance to Property
                                    Trustee...................................20
SECTION 2.03.              Additional Provisions Required in
                                    Global Security...........................21
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                                                                            Page

SECTION 2.04.              Issuance of Global Securities to
                                    Holders...................................22


                                   ARTICLE III

                                 The Securities

SECTION 3.01.              Title and Terms....................................22
SECTION 3.02.              Denominations......................................24
SECTION 3.03.              Execution, Authentication, Delivery and
                                    Dating....................................24
SECTION 3.04.              Temporary Securities...............................25
SECTION 3.05.              Global Securities..................................25
SECTION 3.06.              Registration, Transfer and Exchange
                                    Generally; Certain Transfers and
                                    Exchanges.................................27
SECTION 3.07.              Mutilated, Destroyed, Lost and Stolen
                                    Securities................................30
SECTION 3.08.              Payment of Interest; Interest Rights
                                    Preserved.................................31
SECTION 3.09.              Persons Deemed Owners..............................33
SECTION 3.10.              Cancellation.......................................34
SECTION 3.11.              Right of Set Off...................................34
SECTION 3.12.              CUSIP Numbers......................................34
SECTION 3.13.              Extension of Interest Payment Period;
                                    Notice of Extension.......................34
SECTION 3.14.              Paying Agent, Security Registrar and
                                    Conversion Agent..........................36


                                   ARTICLE IV

                           Satisfaction and Discharge

SECTION 4.01.              Satisfaction and Discharge of
                                    Indenture.................................36


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                                                                            Page

SECTION 4.02.              Application of Trust Money.........................37


                                    ARTICLE V

                                    Remedies

SECTION 5.01.              Events of Default..................................38
SECTION 5.02.              Acceleration of Maturity; Rescission
                                    and Annulment.............................39
SECTION 5.03.              Collection of Indebtedness and Suits
                                    for Enforcement by Trustee................41
SECTION 5.04.              Trustee May File Proofs
                                    of Claim..................................41
SECTION 5.05.              Trustee May Enforce Claims Without
                                    Possession of Securities..................42
SECTION 5.06.              Application of Money Collected.....................42
SECTION 5.07.              Limitation on Suits................................42
SECTION 5.08.              Unconditional Right of Holders to
                                    Receive Principal and Interest and 
                                    to Convert................................43
SECTION 5.09.              Restoration of Rights and Remedies.................44
SECTION 5.10.              Rights and Remedies Cumulative.....................44
SECTION 5.11.              Delay or Omission Not Waiver.......................44
SECTION 5.12.              Control by Holders.................................44
SECTION 5.13.              Waiver of Past Defaults............................45
SECTION 5.14.              Undertaking for Costs..............................45
SECTION 5.15.              Waiver of Stay or Extension Laws...................45
SECTION 5.16.              Enforcement by Holders of Preferred
                                    Securities................................46


                                   ARTICLE VI

                                   The Trustee

SECTION 6.01.              Certain Duties and Responsibilities................46


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                                                                            Page

SECTION 6.02.              Notice of Defaults.................................47
SECTION 6.03.              Certain Rights of Trustee..........................47
SECTION 6.04.              Not Responsible for Recitals or
                                    Issuance of Securities....................48
SECTION 6.05.              May Hold Securities................................49
SECTION 6.06.              Money Held in Trust................................49
SECTION 6.07.              Compensation and Reimbursement.....................49
SECTION 6.08.              Disqualification; Conflicting
                                    Interests.................................50
SECTION 6.09.              Corporate Trustee Required;
                                    Eligibility...............................50
SECTION 6.10.              Resignation and Removal; Appointment of
                                    Successor.................................50
SECTION 6.11.              Acceptance of Appointment by
                                    Successor.................................51
SECTION 6.12.              Merger, Conversion, Consolidation or
                                    Succession to Business....................52
SECTION 6.13.              Preferential Collection of Claims
                                    Against Company...........................52


                                   ARTICLE VII

                Holders' Lists and Reports by Trustee and Company

SECTION 7.01.              Company to Furnish Trustee Names and
                                    Addresses of Holders......................53
SECTION 7.02.              Preservation of Information;
                                    Communications to Holders.................53
SECTION 7.03.              Reports by Trustee.................................53
SECTION 7.04.              Reports by Company.................................54
SECTION 7.05.              Tax Reporting......................................54


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                                                                            Page

                                  ARTICLE VIII

                        Consolidation, Merger, Conveyance, Transfer or Lease

SECTION 8.01.              Company May Consolidate, Etc., Only on
                                    Certain Terms.............................54
SECTION 8.02.              Successor Substituted..............................55


                                   ARTICLE IX

                             Supplemental Indentures

SECTION 9.01.              Supplemental Indentures Without Consent
                                    of Holders................................56
SECTION 9.02.              Supplemental Indentures with Consent of
                                    Holders...................................57
SECTION 9.03.              Execution of Supplemental
                                    Indentures................................58
SECTION 9.04.              Effect of Supplemental
                                    Indentures................................59
SECTION 9.05.              Conformity with Trust Indenture
                                    Act.......................................59
SECTION 9.06.              Reference in Securities to Supplemental
                                    Indentures................................59


                                    ARTICLE X

                    Covenants; Representations and Warranties

SECTION 10.01.             Payment of Principal and Interest..................59
SECTION 10.02.             Maintenance of Office or Agency....................59
SECTION 10.03.             Money for Security Payments to Be Held
                                    in Trust..................................60
SECTION 10.04.             Statement by Officers as to
                                    Default...................................61


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                                                                            Page

SECTION 10.05.             Limitation on Dividends; Transactions
                                    with Affiliates; Covenants as to the
                                    Trust.....................................61
SECTION 10.06.             Payment of Expenses of the Trust...................62
SECTION 10.07.             Registration Rights................................63


                                   ARTICLE XI

                            Redemption of Securities

SECTION 11.01.             Optional Redemption................................64
SECTION 11.02.             Tax Even Redemption................................64
SECTION 11.03.             [Reserved].........................................65
SECTION 11.04.             Selection by Trustee of Securities to
                                    Be Redeemed...............................65
SECTION 11.05.             Notice of Redemption...............................66
SECTION 11.06.             Deposit of Redemption Price........................67
SECTION 11.07.             Securities Payable on
                                    Redemption Date...........................67
SECTION 11.08.             Securities Redeemed in Part........................67


                                   ARTICLE XII

                           Subordination of Securities

SECTION 12.01.             Agreement to Subordinate...........................68
SECTION 12.02.             Default on Senior Debt.............................68
SECTION 12.03.             Liquidation; Dissolution;
                                    Bankruptcy................................69
SECTION 12.04.             Subrogation........................................71
SECTION 12.05.             Trustee to Effectuate
                                    Subordination.............................72
SECTION 12.06.             Notice by the Company..............................72
SECTION 12.07.             Rights of the Trustee; Holders of
                                    Senior Debt...............................73


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                                                                            Page

SECTION 12.08.             Subordination May Not Be Impaired..................73


                                  ARTICLE XIII

                            Conversion of Securities

SECTION 13.01.             Conversion Rights..................................74
SECTION 13.02.             Conversion Procedures..............................75
SECTION 13.03.             Conversion Price Adjustments.......................77
SECTION 13.04.             Reclassification, Consolidation, Merger
                                    or Sale of Assets.........................83
SECTION 13.05.             Notice of Adjustments of Conversion
                                    Price.....................................84
SECTION 13.06.             Prior Notice of Certain Events.....................84
SECTION 13.07.             Adjustments in Case of Fundamental
                                    Changes...................................85
SECTION 13.08.             Dividend or Interest Reinvestment
                                    Plans.....................................89
SECTION 13.09.             Certain Additional Rights..........................89
SECTION 13.10.             Restrictions on Common Stock Issuable
                                    Upon Conversion...........................90
SECTION 13.11.             Trustee Not Responsible for Determining
                                    Conversion Price or Adjustments...........90


                                   ARTICLE XIV

                    Immunity of Incorporators, Stockholders,
                             Officers and Directors

SECTION 14.01.             No Recourse........................................91


EXHIBIT A         Form of Security


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                 Certain Sections of this Indenture relating to
                         Sections 310 through 318 of the
                          Trust Indenture Act of 1939:

       Trust Indenture                                           Indenture
         Act Section                                              Section

     Section 310 (a) (1).....................................     6.09
                 (a) (2).....................................     6.09
                 (a) (3).....................................     Not Applicable
                 (a) (4).....................................     Not Applicable
                 (b).........................................     6.08, 6.10
     Section 311 (a).........................................     6.13
                 (b).........................................     6.13
     Section 312 (a).........................................     7.01
                                                                  7.02(a)
                 (b).........................................     7.02(b)
                 (c).........................................     7.02(c)
     Section 313 (a).........................................     7.03(a)
                 (a) (4).....................................     7.03(a)
                 (b).........................................     7.03(a)
                 (c).........................................     7.03(a)
                 (d).........................................     7.03(b)
     Section 314 (a).........................................     7.04
                 (b).........................................     Not Applicable
                 (c) (1).....................................     1.02
                 (c) (2).....................................     1.02
                 (c) (3).....................................     Not Applicable
                 (d).........................................     Not Applicable
                 (e).........................................     1.02
     Section 315 (a).........................................     6.01
                                                                  6.03
                 (b).........................................     6.02
                 (c).........................................     6.01
                 (d).........................................     6.01
                 (e).........................................     5.14
     Section 316 (a) (1) (A).................................     5.02
                                                                  5.12
                 (a) (1) (B).................................     5.13


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                 (a) (2).....................................     Not Applicable
                 (b).........................................     5.08
                 (c).........................................     1.04(c)
     Section 317 (a) (1).....................................     5.03
                 (a) (2).....................................     5.04
                 (b).........................................     1.003
     Section 318 (a).........................................     1.07


Note:    This reconciliation and tie shall not, for any purpose, be deemed to be
         a part of the Indenture.




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                                    INDENTURE, dated as of April 1, 1998,
                           between Union Pacific Corporation, a corporation duly
                           organized and existing under the laws of the State of
                           Utah (herein called the "Company"), and The Bank of
                           New York, a New York banking corporation, as Trustee
                           (herein called the "Trustee").


                             RECITALS OF THE COMPANY

                  WHEREAS Union Pacific Capital Trust, a Delaware business trust
(the "Trust"), formed under the Amended and Restated Declaration of Trust among
the Company, as Sponsor, The Bank of New York, as property trustee (the
"Property Trustee"), and The Bank of New York (Delaware), as Delaware trustee
(the "Delaware Trustee"), and L. White Mathews, III, Gary M. Stuart, and Joseph
E. O'Connor, Jr., as trustees (together with the Property Trustee and the
Delaware Trustee, the "Issuer Trustees"), dated as of April 1, 1998, (the
"Declaration"), pursuant to the Purchase Agreement (the "Purchase Agreement")
dated March 27, 1998, among the Company, the Trust and the Initial Purchasers
named therein, will issue and sell up to 27,000,000 of its 6 1/4% Convertible
Preferred Securities, Term Income Deferrable Equity Securities (TIDES)
("Preferred Securities") (or up to 30,000,000 of its Preferred Securities to the
extent the over-allotment option is exercised in full) with a liquidation amount
of $50 per Preferred Security, having an aggregate liquidation amount with
respect to the assets of the Trust of up to $1,350,000,000 (or up to
$1,500,000,000 to the extent the over-allotment option is exercised in full);

                  WHEREAS the trustees of the Trust, on behalf of the Trust,
will execute and deliver to the Company Common Securities evidencing an
ownership interest in the Trust, registered in the name of the Company, in an
aggregate amount equal to three percent of the capitalization of the Trust,
equivalent to up to 835,052 6 1/4% Common Securities (the "Common Securities"
and, together with the Preferred Securities, the "Trust Securities") (or up to
927,835 Common Securities to the extent the over-allotment option is exercised
in full), with a liquidation amount of $50 per Common Security, having an
aggregate liquidation amount with respect to the assets of the Trust of up to
$41,752,600 (or
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up to $46,391,750 to the extent the over-allotment option is exercised in full);

                  WHEREAS the Trust will use the proceeds from the sale of the
Preferred Securities and the Common Securities to purchase from the Company the
Convertible Junior Subordinated Debentures Due 2028 (the "Securities") in an
aggregate principal amount of up to $1,391,752,600 (or up to $1,546,391,750 to
the extent the over-allotment option is exercised in full);

                  WHEREAS the Company is guaranteeing the payment of
distributions on the Trust Securities and payment of the Redemption Price (as
defined herein) and payments on liquidation with respect to the Trust
Securities, to the extent provided in the Common Securities Guarantee Agreement,
dated April 1, 1998, between the Company and the Trust, and the Guarantee
Agreement, dated April 1, 1998, between the Company and The Bank of New York, as
Guarantee Trustee, for the benefit of the holders of the Trust Securities from
time to time (together, the "Guarantee");

                  WHEREAS the Company has duly authorized the creation of an
issue of the Securities of substantially the tenor and amount hereinafter set
forth and to provide therefor the Company has duly authorized the execution and
delivery of this Indenture;

                  WHEREAS, so long as the Trust is a Holder of Securities and
any Preferred Securities are outstanding, the Declaration provides that the
holders of Preferred Securities may cause the Conversion Agent (as defined
herein) to (i) exchange such Preferred Securities for Securities held by the
Trust and (ii) immediately convert such Securities into Common Stock (as defined
herein); and

                  WHEREAS all things necessary to make the Securities, when
executed by the Company and authenticated and delivered hereunder and duly
issued by the Company, the valid obligations of the Company and to make this
Indenture a valid agreement of the Company, in accordance with their and its
terms, have been done.


                  NOW, THEREFORE, THIS INDENTURE WITNESSETH:

                  For and in consideration of the premises and the purchase of
the Securities by the Holders (as defined
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                                                                               3


herein) thereof, it is mutually agreed, for the equal and proportionate benefit
of all Holders of the Securities, as follows:


                                    ARTICLE I

                              Definitions and Other
                        Provisions of General Application

                  SECTION 1.01. Definitions. For all purposes of this Indenture,
except as otherwise expressly provided or unless the context otherwise requires:

                  (1) the terms defined in this Article have the meanings
         assigned to them in this Article and include the plural as well as the
         singular;

                  (2) all other terms used herein which are defined in the Trust
         Indenture Act, either directly or by reference therein, have the
         meanings assigned to them therein;

                  (3) all accounting terms not otherwise defined herein have the
         meanings assigned to them in accordance with generally accepted
         accounting principles; and

                  (4) the words "herein", "hereof" and "hereunder" and other
         words of similar import refer to this Indenture as a whole and not to
         any particular Article, Section or other subdivision.

                  "Act", when used with respect to any Holder, has the meaning
specified in Section 1.04.

                  "Additional Payments" means Compounded Interest and Additional
Sums, if any.

                  "Additional Sums" has the meaning specified in Section 3.01.

                  "Adjusted Reference Market Price" has the meaning specified in
Section 13.07(a)(i).

                  "Adjusted Relevant Price" has the meaning specified in Section
13.07(a)(i).
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                                                                               4


                  "Administrative Action" has the meaning specified in the
definition of Tax Event in this Section 1.01.

                  "Affiliate" of any specified Person means any other Person
directly or indirectly controlling or controlled by or under direct or indirect
common control with such specified Person. For the purposes of this definition,
"control" when used with respect to any specified Person means the power to
direct the management and policies of such Person, directly or indirectly,
whether through the ownership of voting securities, by contract or otherwise;
the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

                  "Agent" means any Registrar, Paying Agent, Conversion Agent
or co-registrar.

                  "Agent Member" means any member of, or participant in, the
Depositary.

                  "Applicable Conversion Price" has the meaning specified in
Section 13.01.

                  "Applicable Conversion Ratio" has the meaning specified in
Section 13.01.

                  "Applicable Rate" means the rate at which the Securities
accrue interest and the corresponding Trust Securities accrue distributions,
which in the absence of a Registration Default shall mean 6 1/4%. In the event
of a Registration Default, the Applicable Rate shall be increased in accordance
with the provisions of Section 10.07 hereof.

                  "Board of Directors" means either the board of directors of
the Company or any duly authorized committee of that board.

                  "Board Resolution" means a copy of a resolution certified by
the Secretary or an Assistant Secretary of the Company to have been duly adopted
by the Board of Directors and to be in full force and effect on the date of such
certification, and delivered to the Trustee.

                  "Business Day" means any day other than a Saturday or a
Sunday, or a day on which banking institutions in The City of New York are
authorized or required by law or executive order to remain closed, or a day on
which the
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                                                                               5


corporate trust office of the Property Trustee or the Trustee is closed for
business.

                  "Closing Price" has the meaning specified in Section 13.07(b).

                  "Commission" means the Securities and Exchange Commission, as
from time to time constituted, created under the Exchange Act, or, if at any
time after the execution of this instrument such Commission is not existing and
performing the duties now assigned to it under the Trust Indenture Act, then the
body performing such duties at such time.

                  "Common Securities" has the meaning specified in the Second
Recital to this instrument.

                  "Common Stock" includes any stock of any class of the Company
which has no preference in respect of dividends or of amounts payable in the
event of any voluntary or involuntary liquidation, dissolution or winding up of
the Company and which is not subject to redemption by the Company. However,
subject to the provisions of Article XIII, shares issuable on conversion of
Securities shall include only shares of the class designated as Common Stock of
the Company at the date of this instrument or shares of any class or classes
resulting from any reclassification or reclassifications thereof and which have
no preference in respect of dividends or of amounts payable in the event of any
voluntary or involuntary liquidation, dissolution or winding up of the Company
and which are not subject to redemption by the Company; provided, that if at any
time there shall be more than one such resulting class, the shares of each such
class then so issuable on conversion shall be substantially in the proportion
which the total number of shares of such class resulting from all such
reclassifications bears to the total number of shares of all such classes
resulting from all such reclassifications.

                  "Common Stock Fundamental Change" has the meaning specified in
Section 13.07(b).

                  "Company" means the Person named as the "Company" in the first
paragraph of this instrument until a successor Person shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Company" shall mean such successor Person.
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                                                                               6


                  "Company Request" or "Company Order" means a written request
or order signed in the name of the Company by its Chairman of the Board, its
Vice Chairman of the Board, its President or a Vice President, and by its
Treasurer, an Assistant Treasurer, its Secretary or an Assistant Secretary, and
delivered to the Trustee.

                  "Company Transaction" has the meaning specified in Section
13.04.

                  "Compounded Interest" has the meaning specified in Section
3.13.

                  "Conversion Agent" means the Person appointed to act on behalf
of the holders of Preferred Securities in effecting the conversion of Preferred
Securities as and in the manner set forth in the Declaration and Section 13.02
hereof.

                  "Conversion Date" has the meaning specified in Section 13.02.

                  "Corporate Trust Office" means the principal office of the
Trustee in New York, New York, at which at any particular time its corporate
trust business shall be administered and which at the date of this Indenture is
101 Barclay Street, Floor 21 West, New York, New York 10286.

                  "Declaration" has the meaning specified in the Recitals to
this instrument.

                  "Debt" means (i) the principal of and premium and interest, if
any, on indebtedness for money borrowed, (ii) purchase money and similar
obligations, (iii) obligations under capital leases, (iv) guarantees,
assumptions or purchase commitments relating to, or other transactions as a
result of which the Company is responsible for the payment of, such indebtedness
of others, (v) renewals, extensions and refunding of any such indebtedness, (vi)
interest or obligations in respect of any such indebtedness accruing after the
commencement of any insolvency or bankruptcy proceedings and (vii) obligations
associated with derivative products such as interest rate and currency exchange
contracts, foreign exchange contracts, commodity contracts and similar
arrangements.

                  "Defaulted Interest" has the meaning specified in Section
3.08.
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                                                                               7


                  "Deferral Period" has the meaning specified in Section 3.13.

                  "Deferral Notice" has the meaning specified in Section 3.13.

                  "Delaware Trustee" has the meaning given it in the first
recital of this instrument.

                  "Depositary" means The Depository Trust Company, or any
successor thereto.

                  "Dissolution Tax Opinion" has the meaning specified in the
definition of Tax Event in this Section 1.01.

                  "Entitlement Date" has the meaning specified in Section
13.07(b).

                  "Event of Default" has the meaning specified in Section 5.01.

                  "Exchange Act" means the Securities Exchange Act of 1934.

                  "Expiration Date" has the meaning specified in Section
1.04(d).

                  "Expiration Time" has the meaning specified in Section
13.03(vi).

                  "Fundamental Change" has the meaning specified in Section
13.07(b).

                  "Global Security" means a Security issued in the form
prescribed in Section 2.03, issued to the Depositary or its nominee, and
registered in the name of the Depositary or its nominee.

                  "Guarantee" has the meaning specified in the Fourth Recital to
this instrument.

                  "Holder" means a Person in whose name a Security is registered
in the Security Register.

                  "Indenture" means this instrument as originally executed or as
it may from time to time be supplemented or amended by one or more indentures
supplemental hereto entered into pursuant to the applicable provisions hereof,
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                                                                               8


including, for all purposes of this instrument and any such supplemental
indenture, the provisions of the Trust Indenture Act that are deemed to be a
part of and govern this instrument and any such supplemental indenture,
respectively.

                  "Initial Conversion Price" has the meaning specified in
Section 13.01.

                  "Initial Purchasers", with respect to the Preferred
Securities, means Credit Suisse First Boston Corporation, Merrill Lynch, Pierce,
Fenner & Smith Incorporated, Smith Barney Inc. and Schroder & Co. Inc.

                  "Initial Reference Market Rate" has the meaning specified in
Section 13.07(b).

                  "Interest Payment Date" has the meaning specified in Section
3.01. 

                  "Issuer Trustees" has the meaning specified in the First 
Recital of this Indenture.

                  "Maturity", when used with respect to any Security, means the
date on which the principal of such Security becomes due and payable as therein
or herein provided, whether at the Stated Maturity or by declaration of
acceleration, call for redemption or otherwise.

                  "90 Day Period" has the meaning specified in Section 11.02.

                  "NNM" means the National Market System of the National
Association of Securities Dealers, Inc., or any successor national automated
interdealer quotation system.

                  "Non-Stock Fundamental Change" has the meaning specified in
Section 13.07(b).

                  "No Recognition Opinion" means an opinion of a nationally
recognized independent tax counsel (reasonably acceptable to the Issuer
Trustees) experienced in such matters, which opinion may rely on published
revenue rulings of the Internal Revenue Service, to the effect that the Holders
of the Securities will not recognize any income, gain or loss for United States
Federal income tax purposes as a result of the liquidation of the Trust and the
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                                                                               9


distribution of the Securities to the holders of the Preferred Securities.

                  "Notice of Conversion" means the notice to be given by a
Holder of Preferred Securities to the Conversion Agent directing the Conversion
Agent to exchange such Preferred Securities for Securities and to convert such
Securities into Common Stock on behalf of such holder.

                  "Notice of Default" has the meaning specified in Section 5.01.

                  "Officers' Certificate" means a certificate signed by the
Chairman of the Board, the Vice Chairman of the Board, the President or a Vice
President, and by the Treasurer, an Assistant Treasurer, the Secretary or an
Assistant Secretary, of the Company, and delivered to the Trustee. One of the
officers signing an Officers' Certificate given pursuant to Section 10.04 shall
be the principal executive, financial or accounting officer of the Company.

                  "Opinion of Counsel" means a written opinion of counsel, who
may be counsel for the Company, and who shall be reasonably acceptable to the
Trustee.

                  "Optional Redemption" has the meaning specified in Section
11.01.

                  "Optional Redemption Ratio" has the meaning specified in
Section 13.07(b).

                  "Outstanding", when used with respect to Securities, means,
as of the date of determination, all Securities theretofore authenticated and
delivered under this Indenture, except: (i) Securities theretofore canceled by
the Trustee or delivered to the Trustee for cancellation; (ii) Securities for
whose payment or redemption money in the necessary amount has been theretofore
deposited with the Trustee or any Paying Agent (other than the Company) in trust
or set aside and segregated in trust by the Company (if the Company shall act as
its own Paying Agent) for the Holders of such Securities; provided, that if such
Securities are to be redeemed, notice of such redemption has been duly given
pursuant to this Indenture or provision therefor satisfactory to the Trustee has
been made; and (iii) Securities which have been paid pursuant to Section 3.08,
converted into Common Stock pursuant to
   20
                                                                              10


Section 13.01, or in exchange for or in lieu of which other Securities have been
authenticated and delivered pursuant to this Indenture, other than any such
Securities in respect of which there shall have been presented to the Trustee
proof satisfactory to it that such Securities are held by a bona fide purchaser
in whose hands such Securities are valid obligations of the Company.

                  "Paying Agent" means any Person authorized by the Company to
pay the principal of or interest on any Securities on behalf of the Company.

                  "Payment Resumption Date" has the meaning set forth in Section
3.13.

                  "Person" means any individual, corporation, company, limited
liability company, partnership, joint venture, association, joint-stock company,
trust, unincorporated organization or government or any agency or political
subdivision thereof.

                  "Predecessor Security" of any particular Security means every
previous Security evidencing all or a portion of the same debt as that evidenced
by such particular Security; and, for the purposes of this definition, any
Security authenticated and delivered under Section 3.07 in exchange for or in
lieu of a mutilated, destroyed, lost or stolen Security shall be deemed to
evidence the same debt as the mutilated, destroyed, lost or stolen Security.

                  "Preferred Securities" has the meaning specified in the first
recital to this instrument.

                  "Property Trustee" has the meaning specified in the Recitals
to this instrument.

                  "Purchase Agreement" has the meaning specified in the Recitals
to this instrument.

                  "Purchased Shares" has the meaning specified in
Section 13.03(vi).

                  "Purchaser Stock Price" has the meaning specified in Section
13.07(b).

                  "Redemption Date", when used with respect to any Security to
be redeemed, means the date fixed for such redemption by or pursuant to this
Indenture.
   21
                                                                              11


                  "Redemption Price", when used with respect to any Security to
be redeemed, means the price at which it is to be redeemed pursuant to this
Indenture.

                  "Redemption Tax Opinion" means an opinion of a nationally
recognized independent tax counsel (reasonably acceptable to the Issuer
Trustees) experienced in such matters that, as a result of a Tax Event, there is
more than an insubstantial risk that the Company would be precluded from
deducting the interest on the Securities for United States Federal income tax
purposes, even after the Trust was liquidated and the Securities were
distributed to the holders of the Preferred Securities.

                  "Reference Date" has the meaning specified in Section
13.03(iv).

                  "Reference Market Price" has the meaning specified in Section
13.07(b).

                  "Registration Default" has the meaning specified in Section
10.07.

                  "Registration Rights Agreement" has the meaning specified in
Section 10.07.

                  "Regular Record Date" has the meaning specified in Section
3.01.

                  "Relevant Price" has the meaning specified in Section
13.07(b).

                  "Responsible Officer", when used with respect to the Trustee,
means the chairman or any vice-chairman of the board of directors, the chairman
or any vice-chairman of the executive committee of the board of directors, the
chairman of the trust committee, the president, any vice president, any
assistant vice president, the treasurer, any assistant treasurer, any trust
officer or assistant trust officer, the controller or any assistant controller
or any other officer of the Trustee customarily performing functions similar to
those performed by any of the above designated officers and also means, with
respect to a particular corporate trust matter, any other officer to whom such
matter is referred because of his knowledge of and familiarity with the
particular subject.

   22
                                                                              12


                  "Restricted Preferred Securities" means each Preferred
Security required to bear the restricted securities legend required by Section
9.02(j) of the Declaration.

                  "Restricted Securities" means each Security required to bear a
Restricted Securities Legend pursuant to Section 2.02 hereof.

                  "Restricted Securities Legend" has the meaning specified in
Section 2.02.

                  "Securities" has the meaning specified in the Fifth Recital to
this instrument.

                  "Securities Act" means the Securities Act of 1933.

                  "Security Register" and "Security Registrar" have the
respective meanings specified in Section 3.06.

                  "Senior Debt" means (i) the principal of, and premium and
interest, if any, on all indebtedness of the Company for money borrowed, whether
outstanding on the date of execution of the Indenture or thereafter created,
assumed or incurred, (ii) all obligations to make payment pursuant to the terms
of financial instruments, such as (a) securities contracts and foreign currency
exchange contracts, (b) derivative instruments, such as swap agreements
(including interest rate and foreign exchange rate swap agreements), cap
agreements, floor agreements, collar agreements, interest rate agreements,
foreign exchange agreements, options, commodity futures contracts and commodity
options contracts, and (c) similar financial instruments; except, in the case of
both (i) and (ii) above, such indebtedness and obligations that are expressly
stated to rank junior in right of payment to, or pari passu in right of payment
with, the Securities, (iii) indebtedness or obligations of others of the kind
described in both (i) and (ii) above for the payment of which the Company is
responsible or liable as guarantor or otherwise, and (iv) deferrals, renewals
or extensions of any such Senior Debt; provided, however, that Senior Debt shall
not be deemed to include (a) any Debt of the Company which, when incurred and
without respect to any election under Section 1111(b) of the United States
Bankruptcy Code of 1978, was without recourse to the Company, (b) trade accounts
payable and accrued liabilities arising in the ordinary course of business, (c)
any Debt of the Company to
   23
                                                                              13

any of its subsidiaries, (d) Debt to any employee of the Company and (e) Debt
which by its terms is subordinated to trade accounts payable or accrued
liabilities arising in the ordinary course of business to the extent that
payments made to the holders of such Debt by the Holders of the Securities as a
result of the subordination provisions of the Indenture would be greater than
such payments otherwise would have been as a result of any obligation of such
holders of such Debt to pay amounts over to the obligees on such trade accounts
payable or accrued liabilities arising in the ordinary course of business as a
result of subordination provisions to which such Debt is subject.

                  "Shelf Registration Statement" has the meaning specified in
Section 10.07.

                  "Special Record Date" for the payment of any Defaulted
Interest means a date fixed by the Trustee pursuant to Section 3.08.

                  "Stated Maturity", when used with respect to any Security or
any installment of principal thereof or interest thereon, means the date
specified in such Security as the fixed date on which the principal, together
with any accrued and unpaid interest (including Compounded Interest), of such
Security or such installment of interest is due and payable.

                  "Subsidiary" of any Person means (i) a corporation more than
50% of the outstanding Voting Stock of which is owned, directly or indirectly,
by such Person or by one or more other Subsidiaries of such Person or by such
Person and one or more Subsidiaries thereof or (ii) any other Person (other than
a corporation) in which such Person, or one or more other Subsidiaries of such
Person or such Person and one or more other Subsidiaries thereof, directly or
indirectly, has at least a majority ownership and power to direct the policies,
management and affairs thereof.

                  "Tax Event" means the receipt by the Property Trustee of an
opinion of a nationally recognized independent tax counsel to the Company
experienced in such matters (a "Dissolution Tax Opinion") to the effect that, as
a result of (a) any amendment to or change (including any announced prospective
change (which shall not include a proposed change), provided that a Tax Event
shall not occur more than 90 days before the effective date of any such
prospective change) in the laws (or any regulations thereunder) of the United
States or any political subdivision or taxing author-
   24
                                                                              14


ity thereof or therein, (b) any judicial decision or official administrative
pronouncement, ruling, regulatory procedure, notice or announcement, including
any notice or announcement of intent to adopt such procedures or regulations
(an "Administrative Action") or (c) any amendment to or change in the
administrative position or interpretation of any Administrative Action or
judicial decision that differs from the theretofore generally accepted position,
in each case, by any legislative body, court, governmental agency or regulatory
body, irrespective of the manner in which such amendment or change is made
known, which amendment or change is effective or such Administrative Action or
decision is announced, in each case, on or after the date of original issuance
of the Securities or the issue date of the Preferred Securities issued by the
Trust, there is more than an insubstantial risk that (x) if the Securities are
held by the Property Trustee, (i) the Trust is, or will be within 90 days of the
date of such opinion, subject to United States Federal income tax with respect
to interest accrued or received on the Securities or subject to more than a de
minimis amount of other taxes, duties or other governmental charges as
determined by such counsel, or (ii) any portion of interest payable by the
Company to the Trust on the Securities is not, or within 90 days of the date of
such opinion will not be, deductible by the Company in whole or in part for
United States Federal income tax purposes or (y) with respect to Securities
which are no longer held by the Property Trustee, any portion of interest
payable by the Company on the Securities is not, or within 90 days of the date
of such opinion will not be, deductible by the Company in whole or in part for
United States Federal income tax purposes.

                  "Trading Day" has the meaning specified in Section 13.07(b).

                  "Trust" has the meaning specified in the first recital to this
instrument.

                  "Trustee" means the Person named as the "Trustee" in the first
paragraph of this instrument until a successor Trustee shall have become such
pursuant to the applicable provisions of this Indenture, and thereafter
"Trustee" shall mean such successor Trustee.

                  "Trust Indenture Act" means the Trust Indenture Act of 1939 as
in force at the date as of which this instrument was executed; provided,
however, that in the event the
   25
                                                                              15


Trust Indenture Act of 1939 is amended after such date, "Trust Indenture Act"
means, to the extent required by any such amendment, the Trust Indenture Act of
1939 as so amended.

                  "Trust Securities" means Common Securities and Preferred
Securities.

                  "Vice President", when used with respect to the Company or the
Trustee, means any vice president, whether or not designated by a number or a
word or words added before or after the title "vice president".

                  "Voting Stock" of any Person means capital stock of such
Person which ordinarily has voting power for the election of directors (or
Persons performing similar functions) of such Person, whether at all times or
only so long as no senior class of securities has such voting power by reason of
any contingency.

                  SECTION 1.02. Compliance Certificates and Opinions. Upon any
application or request by the Company to the Trustee to take any action under
any provision of this Indenture, the Company shall furnish to the Trustee such
certificates and opinions as may be required under the Trust Indenture Act or
reasonably requested by the Trustee in connection with such application or
request. Each such certificate or opinion shall be given in the form of an
Officers' Certificate, if to be given by an officer of the Company, or an
Opinion of Counsel, if to be given by counsel, and shall comply with the
applicable requirements of the Trust Indenture Act and any other applicable
requirement set forth in this Indenture.

                  Every certificate or opinion with respect to compliance with a
condition or covenant provided for in this Indenture shall include:

                  (1) a statement that each individual signing such certificate
         or opinion has read such covenant or condition and the definitions
         herein relating thereto;

                  (2) a brief statement as to the nature and scope of the
         examination or investigation upon which the statements or opinions
         contained in such certificate or opinion are based;
   26
                                                                              16


                  (3)  a statement that, in the opinion of each such
         individual, he has made or caused to be made such
         examination or investigation as is necessary to enable him to express
         an informed opinion as to whether or not such covenant or condition has
         been complied with; and

                  (4) a statement as to whether, in the opinion of each such
         individual, such condition or covenant has been complied with.

                  SECTION 1.03. Form of Documents Delivered to Trustee. In any
case where several matters are required to be certified by, or covered by an
opinion of, any specified Person, it is not necessary that all such matters be
certified by, or covered by the opinion of, only one such Person, or that they
be so certified or covered by only one document, but one such Person may
certify or give an opinion with respect to some matters and one or more other
such Persons as to other matters, and any such Person may certify or give an
opinion as to such matters in one or several documents.

                  Any certificate or opinion of an officer of the Company may be
based, insofar as it relates to legal matters, upon a certificate or opinion
of, or representations by, counsel, unless such officer knows, or in the
exercise of reasonable care should know, that the certificate or opinion or
representations with respect to the matters upon which his certificate or
opinion is based are erroneous. Any such certificate or Opinion of Counsel may
be based, insofar as it relates to factual matters, upon a certificate or
opinion of, or representations by, an officer or officers of the Company stating
that the information with respect to such factual matters is in the possession
of the Company, unless such counsel knows, or in the exercise of reasonable care
should know, that the certificate or opinion or representations with respect to
such matters are erroneous.

                  Where any Person is required to make, give or execute two or
more applications, requests, consents, certificates, statements, opinions or
other instruments under this Indenture, they may, but need not, be consolidated
and form one instrument.

                  SECTION 1.04. Acts of Holders; Record Dates. (a) Any request,
demand, authorization, direction, notice, consent, waiver or other action
provided by this Indenture to be given to or taken by Holders may be embodied in
and
   27
                                                                              17


evidenced by one or more instruments of substantially similar tenor signed by
such Holders in person or by an agent duly appointed in writing; and, except as
herein otherwise expressly provided, such action shall become effective when
such instrument or instruments is or are delivered to the Trustee and, where it
is hereby expressly required, to the Company. Such instrument or instruments
(and the action embodied therein and evidenced thereby) are herein sometimes
referred to as the "Act" of the Holders signing such instrument or instruments.
Proof of execution of any such instrument or of a writing appointing any such
agent shall be sufficient for any purpose of this Indenture and (subject to
Section 6.01) conclusive in favor of the Trustee and the Company, if made in the
manner provided in this Section.

                  (b) The fact and date of the execution by any Person of any
such instrument or writing may be proved by the affidavit of a witness of such
execution or by a certificate of a notary public or other officer authorized by
law to take acknowledgments of deeds, certifying that the individual signing
such instrument or writing acknowledged to him the execution thereof. Where such
execution is by a signer acting in a capacity other than his individual
capacity, such certificate or affidavit shall also constitute sufficient proof
of his authority. The fact and date of the execution of any such instrument or
writing, or the authority of the Person executing the same, may also be proved
in any other manner which the Trustee or the Company, as the case may be, deems
sufficient.

                  (c) The Company may, in the circumstances permitted by the
Trust Indenture Act, fix any day as the record date for the purpose of
determining the Holders of Outstanding Securities entitled to give, make or take
any request, demand, authorization, direction, notice, consent, waiver or other
action, or to vote on any action, authorized or permitted to be given or taken
by Holders. If not set by the Company prior to the first solicitation of a
Holder made by any Person in respect of any such action, or, in the case of any
such vote, prior to such vote, the record date for any such action or vote shall
be the 30th day (or, if later, the date of the most recent list of Holders
required to be provided pursuant to Section 7.01) prior to such first
solicitation or vote, as the case may be. With regard to any record date, only
the Holders on such date (or their duly designated proxies) shall be entitled to
give or take, or vote on, the relevant action.
   28
                                                                              18


                  (d) The Trustee may set any day as a record date for the
purpose of determining the Holders of Outstanding Securities entitled to join in
the giving or making of (i) any notice of default, (ii) any declaration of
acceleration referred to in Section 5.02, (iii) any request to institute
proceedings referred to in Section 5.07(2) or (iv) any direction referred to in
Section 5.12. If any record date is set pursuant to this paragraph, the Holders
of Outstanding Securities on such record date, and no other Holders, shall be
entitled to join in such notice, declaration, request or direction, whether or
not such Holders remain Holders after such record date; provided that no such
action shall be effective hereunder unless taken on or prior to the date set by
the Trustee by which any such determination shall be made (the "Expiration
Date") by Holders of the requisite principal amount of Outstanding Securities on
such record date. Nothing in this paragraph shall be construed to prevent the
Trustee from setting a new record date for any action for which a record date
has previously been set pursuant to this paragraph (whereupon the record date
previously set shall automatically and with no action by any Person be canceled
and of no effect), and nothing in this paragraph shall be construed to render
ineffective any action taken by Holders of the requisite principal amount of
Outstanding Securities on the date such action is taken. Promptly after any
record date is set pursuant to this paragraph, the Trustee, at the Company's
expense, shall cause notice of such record date, the proposed action by Holders
and the applicable Expiration Date to be given to the Company in writing and to
each Holder of Securities in the manner set forth in Section 1.06.

                  (e) The ownership of Securities shall be proved by the
Security Register.

                  (f) Any request, demand, authorization, direction, notice,
consent, waiver or other Act of the Holder of any Security shall bind every
future Holder of the same Security and the Holder of every Security issued upon
the registration of transfer thereof or in exchange therefor or in lieu thereof
in respect of anything done, omitted or suffered to be done by the Trustee or
the Company in reliance thereon, whether or not notation of such action is made
upon such Security.

                  (g) Without limiting the foregoing, a Holder entitled
hereunder to give or take any such action with regard to any particular Security
may do so with regard to
   29
                                                                              19


all or any part of the principal amount of such Security or by one or more duly
appointed agents each of which who may do so pursuant to such appointment with
regard to all or any different part of such principal amount.

                  SECTION 1.05.  Notices, Etc., to Trustee and the Company.  Any
request, demand, authorization, direction, notice, consent, waiver or Act of
Holders or other document provided or permitted by this Indenture to be made
upon, given or furnished to, or filed with,

                  (1) the Trustee by any Holder or by the Company shall be
         sufficient for every purpose hereunder if made, given, furnished or
         filed in writing to:

                           The Bank of New York
                           101 Barclay Street
                           Floor 21 West
                           New York, New York 10286

                           Attention of:    Corporate Trust Trustee
                                            Administration

                  (2) the Company by the Trustee or by any Holder shall be
         sufficient for every purpose hereunder (unless otherwise herein
         expressly provided) if in writing and mailed, first-class postage
         prepaid, to the Company addressed to:

                           Union Pacific Corporation
                           1717 Main Street
                           Suite 5900
                           Dallas, Texas 75201-4605

                           Attention of:  Chief Financial Officer

                  SECTION 1.06. Notice to Holders; Waiver. Where this Indenture
provides for notice to Holders of any event, such notice shall be sufficiently
given (unless otherwise herein expressly provided) if in writing and mailed,
first-class postage prepaid, to each Holder affected by such event, at such
Holder's address as it appears in the Security Register, not later than the
latest date (if any), and not earlier than the earliest date (if any),
prescribed for the giving of such notice. In any case where notice to Holders is
given by mail, neither the failure to mail such notice, nor any defect in any
notice so mailed, to any particular Holder shall affect the sufficiency of such
   30
                                                                              20

notice with respect to other Holders. Any notice when mailed to a Holder in the
aforesaid manner shall be conclusively deemed to have been received by such
Holder whether or not actually received by such Holder. Where this Indenture
provides for notice in any manner, such notice may be waived in writing by the
Person entitled to receive such notice, either before or after the event, and
such waiver shall be the equivalent of such notice. Waivers of notice by Holders
shall be filed with the Trustee, but such filing shall not be a condition
precedent to the validity of any action taken in reliance upon such waiver.

                  In case, by reason of the suspension of regular mail service
or by reason of any other cause, it shall be impracticable to give such notice
by mail, then such notification as shall be made with the approval of the
Trustee shall constitute a sufficient notification for every purpose hereunder.

                  SECTION 1.07. Conflict with Trust Indenture Act. If any
provision hereof limits, qualifies or conflicts with a provision of the Trust
Indenture Act that is required under such Act to be a part of and govern this
Indenture, the latter provision shall control. If any provision of this
Indenture modifies or excludes any provision of the Trust Indenture Act that may
be so modified or excluded, the latter provision shall be deemed to apply to
this Indenture as so modified or to be excluded, as the case may be.

                  SECTION 1.08. Effect of Headings and Table of Contents. The
Article and Section headings herein and the Table of Contents are for
convenience only and shall not affect the construction hereof.

                  SECTION 1.09. Successors and Assigns. All covenants and
agreements in this Indenture by the Company shall bind its successors and
assigns, whether so expressed or not.

                  SECTION 1.10. Separability Clause. In case any provision in
this Indenture or in the Securities shall be invalid, illegal or unenforceable,
the validity, legality and enforceability of the remaining provisions shall not
in any way be affected or impaired thereby.

                  SECTION 1.11. Benefits of Indenture. Nothing in this Indenture
or in the Securities, express or implied, shall give to any Person, other than
the parties hereto and



   31
                                                                              21


their successors hereunder, the holders of Senior Debt, the holders of Preferred
Securities (to the extent provided herein) and the Holders of Securities, any
benefit or any legal or equitable right, remedy or claim under this Indenture.

                  SECTION 1.12. GOVERNING LAW. THIS INDENTURE AND THE SECURITIES
SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF
NEW YORK, WITHOUT REGARD TO PRINCIPLES OF CONFLICTS OF LAWS.

                  SECTION 1.13. Legal Holidays. In any case where any Interest
Payment Date, Redemption Date or Stated Maturity of any Security or the last
date on which a Holder has the right to convert his Securities shall not be a
Business Day, then (notwithstanding any other provision of this Indenture or of
the Securities) payment of interest or principal or conversion of the Securities
need not be made on such date, but may be made on the next succeeding Business
Day (except that, with respect to any Redemption Date, if such Business Day is
in the next succeeding calendar year, such Redemption Date shall be the
immediately preceding Business Day) with the same force and effect as if made on
the Interest Payment Date or Redemption Date, or at the Stated Maturity or on
such last day for conversion, provided that no interest shall accrue for the
period from and after such Interest Payment Date, Redemption Date or Stated
Maturity, as the case may be.


                                   ARTICLE II

                                 Security Forms

                  SECTION 2.01. Forms Generally. The Securities and the
Trustee's certificates of authentication shall be substantially in the form of
Exhibit A which is hereby incorporated in and expressly made a part of this
Indenture. The Securities may have notations, legends or endorsements required
by law, stock exchange rule, agreements to which the Company is subject, if any,
or usage (provided that any such notation, legend or endorsement is in a form
acceptable to the Company). The Company shall furnish any such legend not
contained in Exhibit A to the Trustee in writing. Each Security shall be dated
the date of its authentication. The terms and provisions of the Securities set
forth in Exhibit A are part of the terms of this Indenture and to the extent
applicable, the Company and the Trustee, by their
   32
                                                                              22


execution and delivery of this Indenture, expressly agree to such terms and
provisions and to be bound thereby.

                  The definitive Securities shall be typewritten or printed,
lithographed or engraved or produced by any combination of these methods on
steel engraved borders or may be produced in any other manner permitted by the
rules of any securities exchange on which the Securities may be listed, all as
determined by the officers executing such Securities, as evidenced by their
execution of such Securities.

                  SECTION 2.02. Initial Issuance to Property Trustee. The
Securities initially issued to the Property Trustee of the Trust shall be in the
form of one or more individual certificates in definitive, fully registered form
without distribution coupons and shall bear the following legend (the
"Restricted Securities Legend") unless the Company determines otherwise in
accordance with applicable law:

         THIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A
         TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES
         ACT OF 1933 (THE "SECURITIES ACT"), AND THIS SECURITY AND ANY COMMON
         STOCK ISSUABLE UPON CONVERSION HEREOF MAY NOT BE OFFERED, SOLD OR
         OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN
         APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS SECURITY IS
         HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY MAY BE RELYING ON THE
         EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT
         PROVIDED BY RULE 144A THEREUNDER.

         THE HOLDER OF THIS SECURITY AGREES FOR THE BENEFIT OF THE ISSUER AND
         THE COMPANY THAT (A) THIS SECURITY AND ANY COMMON STOCK ISSUABLE UPON
         CONVERSION HEREOF MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE
         TRANSFERRED, ONLY (i) TO A PERSON WHOM THE SELLER REASONABLY BELIEVES
         IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE
         SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A,
         (ii) OUTSIDE THE UNITED STATES IN A TRANSACTION IN ACCORDANCE WITH RULE
         904 UNDER THE SECURITIES ACT, (iii) PURSUANT TO AN EXEMPTION FROM
         REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER
         (IF AVAILABLE) OR (iv) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT
         UNDER THE SECURITIES ACT, IN EACH OF CASES (i) THROUGH (iv) IN
         ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS
   33
                                                                              23


         OF ANY STATE OF THE UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION,
         AND (B) THE HOLDER WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO,
         NOTIFY ANY PURCHASER OF THIS SECURITY FROM IT OF THE RESALE
         RESTRICTIONS REFERRED TO IN (A) ABOVE.

                  SECTION 2.03.  Additional Provisions Required in Global
Security.  Any Global Security issued hereunder shall, in addition to the
provisions contained in Section 2.02, bear a legend in substantially the
following form:

         "THIS SECURITY IS A GLOBAL SECURITY WITHIN THE MEANING OF THE INDENTURE
         HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE DEPOSITORY
         TRUST COMPANY (THE "DEPOSITARY") OR A NOMINEE OF THE DEPOSITARY. THIS
         SECURITY IS EXCHANGEABLE FOR SECURITIES REGISTERED IN THE NAME OF A
         PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED
         CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND NO TRANSFER OF THIS
         SECURITY (OTHER THAN A TRANSFER OF THIS SECURITY AS A WHOLE BY THE
         DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE
         DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY) MAY
         BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

         UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF
         THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO
         UNION PACIFIC CORPORATION OR ITS AGENT FOR REGISTRATION OF TRANSFER,
         EXCHANGE OR PAYMENT, AND ANY SECURITY ISSUED IS REGISTERED IN THE NAME
         OF CEDE & CO. OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED
         REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND ANY PAYMENT HEREON
         IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
         VALUE OR OTHERWISE BY A PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
         OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN."

                  SECTION 2.04. Issuance of Global Securities to Holders. The
Securities may be represented by one or more Global Securities registered in the
name of the Depositary or its nominee if, and only if, the Securities are
distributed to the Holders of the Trust Securities. Until such time, the
Securities shall be registered in the name of and held by the Property Trustee.
Securities distributed to Holders of book-entry Trust Securities shall be
distributed in the form of one or more Global Securities registered in
   34
                                                                              24


the name of the Depositary or its nominee, and deposited with the Security
Registrar, as custodian for such Depositary, or held by such Depositary for
credit by the Depositary to the respective accounts of the beneficial owners of
the Securities represented thereby (or such other accounts as they may direct).
Securities distributed to Holders of Trust Securities other than book-entry
Trust Securities shall not be issued in the form of a Global Security or any
other form intended to facilitate book-entry trading in beneficial interests in
such Securities.


                                   ARTICLE III

                                 The Securities

                  SECTION 3.01. Title and Terms. The aggregate principal amount
of Securities that may be authenticated and delivered under this Indenture is
limited to the sum of $1,546,391,750 except for Securities authenticated and
delivered upon registration of transfer of, or in exchange for, or in lieu of,
other Securities pursuant to Section 3.04, 3.05, 3.06, 3.07, 9.06, 11.08 or
13.02.

                  The Securities shall be known and designated as the "6 1/4%
Convertible Junior Subordinated Debentures Due 2028" of the Company. Their
Stated Maturity shall be April 1, 2028, and they shall bear interest at the
Applicable Rate, from April 1, 1998, or from the most recent Interest Payment
Date (as defined below) to which interest has been paid or duly provided for, as
the case may be, payable quarterly (subject to deferral as set forth herein), in
arrears, on January 1, April 1, July 1 and October 1 (each an "Interest Payment
Date") of each year, commencing July 1, 1998, until the principal thereof is
paid or made available for payment, and they shall be paid to the Person in
whose name the Security is registered at the close of business on the regular
record date for such interest installment, which shall be the close of business
on the fifteenth day of the month next preceding the applicable Interest Payment
Date (the "Regular Record Date"). Interest will compound quarterly and will
accrue at the Applicable Rate on any interest installment in arrears for more
than one quarter or during an extension of an interest payment period as set
forth in Section 3.13 hereof.

                  The amount of interest payable for any period will be computed
on the basis of a 360-day year of twelve 30-day
   35
                                                                              25


months. Except as provided in the following sentence, the amount of interest
payable for any period shorter than a full quarterly period for which interest
is computed, will be computed on the basis of the actual number of days elapsed
in such a 30-day month. In the event that any date on which interest is payable
on the Securities is not a Business Day, then payment of interest payable on
such date will be made on the next succeeding day which is a Business Day (and
without any interest or other payment in respect of any such delay), with the
same force and effect as if made on such date.

                  If at any time (including upon the occurrence of a Tax Event)
while the Property Trustee is the Holder of all the Securities, the Trust or the
Property Trustee is required to pay any taxes, duties, assessments or
governmental charges of whatever nature (other than withholding taxes) imposed
by the United States, or any other taxing authority, then, in any case, the
Company will pay as additional amounts ("Additional Sums") on the Securities
held by the Property Trustee, such additional amounts as shall be required so
that the net amounts received and retained by the Trust and the Property Trustee
after paying such taxes, duties, assessments or other governmental charges will
be equal to the amounts the Trust and the Property Trustee would have received
had no such taxes, duties, assessments or other governmental charges been
imposed.

                  The principal of and interest on the Securities shall be
payable at the office or agency of the Company in New York, New York maintained
for such purpose and at any other office or agency maintained by the Company for
such purpose in such coin or currency of the United States of America as at the
time of payment is legal tender for payment of public and private debts;
provided, however, that at any time that the Property Trustee is not the sole
holder of the Securities, payment of interest may, at the option of the Company,
be made by check mailed to the address of the Person entitled thereto as such
address shall appear in the Security Register or by wire transfer.

                  The Securities shall be redeemable as provided in Article XI
hereof.

                  The Securities shall be subordinated in right of payment to
Senior Debt as provided in Article XII hereof.
   36
                                                                              26


                  The Securities shall be convertible as provided in Article
XIII hereof.

                  SECTION 3.02. Denominations. The Securities shall be issuable
only in registered form without coupons and only in denominations of $1,000 and
integral multiples thereof.

                  SECTION 3.03. Execution, Authentication, Delivery and Dating.
The Securities shall be executed on behalf of the Company by its Chairman of the
Board, its Vice Chairman of the Board, its President or one of its Vice
Presidents, under its corporate seal reproduced thereon attested by its
Secretary or one of its Assistant Secretaries. The signature of any of these
officers on the Securities may be manual or facsimile.

                  Securities bearing the manual or facsimile signatures of
individuals who were at any time the proper officers of the Company shall bind
the Company, notwithstanding that such individuals or any of them have ceased to
hold such offices prior to the authentication and delivery of such Securities or
did not hold such offices at the date of such Securities.

                  At any time and from time to time after the execution and
delivery of this Indenture, the Company may deliver Securities executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication and delivery of such Securities; and the Trustee in accordance
with such Company Order shall manually authenticate and make available for
delivery such Securities as in this Indenture provided and not otherwise.

                  No Security shall be entitled to any benefit under this
Indenture or be valid or obligatory for any purpose unless there appears on such
Security a certificate of authentication substantially in the form provided for
herein executed by the Trustee by manual signature, and such certificate upon
any Security shall be conclusive evidence, and the only evidence, that such
Security has been duly authenticated and delivered hereunder.

                  SECTION 3.04. Temporary Securities. Pending the preparation of
definitive Securities, the Company may execute, and upon Company Order the
Trustee shall authenticate and make available for delivery, temporary
Securities which are printed, lithographed, typewritten, mimeographed
   37
                                                                              27

or otherwise produced, in any authorized denomination, substantially of the
tenor of the definitive Securities in lieu of which they are issued and with
such appropriate insertions, omissions, substitutions and other variations as
the officers executing such Securities may determine, as evidenced by their
execution of such Securities.

                  If temporary Securities are issued, the Company will cause
definitive Securities to be prepared without unreasonable delay. After the
preparation of definitive Securities, the temporary Securities shall be
exchangeable for definitive Securities upon surrender of the temporary
Securities at any office or agency of the Company designated pursuant to Section
10.02, without charge to the Holder. Upon surrender for cancellation of any one
or more temporary Securities, the Company shall execute and the Trustee shall
authenticate and make available for delivery in exchange therefor a like
principal amount of definitive Securities of authorized denominations. Until so
exchanged the temporary Securities shall in all respects be entitled to the same
benefits under this Indenture as definitive Securities.

                  SECTION 3.05. Global Securities. (a) Each Global Security
issued under this Indenture shall be registered in the name of the Depositary
designated by the Company for such Global Security or a nominee thereof and
delivered to such Depositary or a nominee thereof or custodian therefor, and
each such Global Security shall constitute a single Security for all purposes of
this Indenture.

                  (b) Notwithstanding any other provision in this Indenture, no
Global Security may be exchanged in whole or in part for Securities registered,
and no transfer of a Global Security in whole or in part may be registered, in
the name of any Person other than the Depositary for such Global Security or a
nominee thereof unless (i) such Depositary advises the Trustee in writing that
such Depositary is no longer willing or able to continue as a Depositary with
respect to such Global Security, and no successor depositary shall have been
appointed, or if at any time the Depositary ceases to be a "clearing agency"
registered under the Exchange Act, at a time when the Depositary is required to
be so registered to act as such depositary, (ii) the Company in its sole
discretion determines that such Global Security shall be so exchangeable or
(iii) there shall have occurred and be continuing an Event of Default.
   38
                                                                              28


                  (c) If any Global Security is to be exchanged for other
Securities or canceled in whole, it shall be surrendered by or on behalf of the
Depositary or its nominee to the Security Registrar for exchange or cancellation
as provided in this Article III. If any Global Security is to be exchanged for
other Securities or canceled in part, or if another Security is to be exchanged
in whole or in part for a beneficial interest in any Global Security, then
either (i) such Global Security shall be so surrendered for exchange or
cancellation as provided in this Article III or (ii) the principal amount
thereof shall be reduced or increased by an amount equal to the portion thereof
to be so exchanged or canceled, or equal to the principal amount of such other
Security to be so exchanged for a beneficial interest therein, as the case may
be, by means of an appropriate adjustment made on the records of the Security
Registrar, whereupon the Trustee shall instruct the Depositary or its authorized
representative to make a corresponding adjustment to its records. Upon any such
surrender or adjustment of a Global Security by the Depositary, accompanied by
registration instructions and, to the extent required by Section 3.06, a
Restricted Securities Certificate, the Trustee shall, subject to Section 3.05(b)
and as otherwise provided in this Article III, authenticate and make available
for delivery any Securities issuable in exchange for such Global Security (or
any portion thereof) in accordance with the instructions of the Depositary. The
Trustee shall not be liable for any delay in delivery of such instructions and
may conclusively rely on, and shall be fully protected in relying on, such
instructions.

                  (d) The Depositary or its nominee, as registered owner of a
Global Security, shall be the Holder of such Global Security for all purposes
under this Indenture and the Securities, and owners of beneficial interests in a
Global Security shall hold such interest pursuant to the rules and procedures of
the Depositary. Accordingly, any such owner's beneficial interests in a Global
Security shall be shown only on, and the transfer of such interest shall be
effected only through, records maintained by the Depositary or its nominee or
its Agent Members. Neither the Trustee nor the Security Registrar shall have any
liability in respect of any transfers effected by the Depositary.

                  (e) The rights of the beneficial interests in a Global
Security shall be exercised only through the Depositary and shall be limited to
those established by law
   39
                                                                              29


and agreements between such owners and the Depositary and/or its Agent Members.

                  SECTION 3.06. Registration, Transfer and Exchange Generally;
Certain Transfers and Exchanges. (a) The Company shall cause to be kept at the
Corporate Trust Office of the Trustee a register (the register maintained in
such office and in any other office or agency designated pursuant to Section
10.02 being herein sometimes collectively referred to as the "Security
Register") in which, subject to such reasonable regulations as it may prescribe,
the Company shall provide for the registration of Securities and of transfers of
Securities. The Trustee is hereby appointed "Security Registrar" for the purpose
of registering Securities and transfers of Securities as herein provided.

                  Upon surrender for registration of transfer of any Security at
an office or agency of the Company designated pursuant to Section 10.02 for such
purpose, the Company shall execute, and the Trustee shall authenticate and
deliver, in the name of the designated transferee or transferees, one or more
new Securities of any authorized denominations and of a like aggregate principal
amount and bearing such restrictive legends as may be required by this
Indenture.

                  At the option of the Holder, Securities may be exchanged for
other Securities of any authorized denominations and of a like aggregate
principal amount and bearing such restrictive legends as may be required by this
Indenture, upon surrender of the Securities to be exchanged at such office or
agency. Whenever any Securities are so surrendered for exchange, the Company
shall execute, and the Trustee shall authenticate and make available for
delivery, the Securities which the Holder making the exchange is entitled to
receive.

                  All Securities issued upon any registration of transfer or
exchange of Securities shall be the valid obligations of the Company,
evidencing the same debt, and entitled to the same benefits under this
Indenture, as the Securities surrendered upon such registration of transfer or
exchange.

                  Every Security presented or surrendered for registration of
transfer or for exchange shall (if so required by the Company or the Trustee) be
duly endorsed, or be accompanied by a written instrument of transfer in form
satisfac-
   40
                                                                              30


tory to the Company and the Security Registrar duly executed, by the Holder
thereof or his attorney duly authorized in writing.

                  No service charge shall be made for any registration of
transfer or exchange of Securities, but the Company may require payment of a sum
sufficient to cover any tax or other governmental charge that may be imposed in
connection with any registration of transfer or exchange of Securities, other
than exchanges pursuant to Section 3.04, 3.05, 9.06, 11.09 or 13.01 not
involving any transfer.

                  Neither the Company nor the Trustee shall be required (i) in
the case of a partial redemption of the Securities, to issue, register the
transfer of or exchange any Security during a period beginning at the opening of
business 15 days before the day of the mailing of a notice of redemption of
Securities selected for redemption under Section 11.04 and ending at the close
of business on the day of such mailing or (ii) to register the transfer of or
exchange any Security so selected for redemption in whole or in part, except the
unredeemed portion of any Security being redeemed in part.

                  (b) Transfer and Exchange Procedures and Restrictions. The
Securities may not be transferred except in compliance with the Restricted
Securities Legend unless otherwise determined by the Company in accordance with
applicable law. Upon any distribution of the Securities to the holders of the
Trust Securities in accordance with the Declaration, the Company and the Trustee
shall enter into a supplemental indenture pursuant to Section 9.01(6) to provide
for transfer procedures and restrictions with respect to the Securities
substantially similar to those contained in the Declaration to the extent
applicable in the circumstances existing at the time of such distribution.
Notwithstanding any other provision of the Indenture, transfers and exchanges of
Securities and beneficial interests in a Global Security of the kinds specified
in this Section 3.06(b) shall be made only in accordance with this Section
3.06(b).

                  (1) Non-Global Security to Global Security. If the Holder of a
         Security (other than a Global Security) wishes at any time to transfer
         all or any portion of such Security to a Person who wishes to take
         delivery thereof in the form of a beneficial interest in a Global
         Security, such transfer may be effected only in
   41
                                                                              31

         accordance with the provisions of this clause (b)(1) and subject to the
         rules and procedures of the Depositary. Upon receipt by the Security
         Registrar of (A) such Security as provided in Section 3.06(a) and
         instructions satisfactory to the Security Registrar directing that a
         beneficial interest in the Global Security in a specified principal
         amount not greater than the principal amount of such Security be
         credited to a specified Agent Member's account and (B) a Securities
         Certificate duly executed by such Holder or such Holder's attorney duly
         authorized in writing, then the Security Registrar shall cancel such
         Security (and issue a new Security in respect of the untransferred
         portion thereof) as provided in Section 3.06(a) and increase the
         aggregate principal amount of the Global Security by the specified
         principal amount as provided in Section 3.05(c).

                  (2) Non-Global Security to Non-Global Security. A Security
         that is not a Global Security may be transferred, in whole or in part,
         to a Person who takes delivery in the form of another Security that is
         not a Global Security as provided in Section 3.06(a); provided, that if
         such Security to be transferred in whole or in part is a Restricted
         Security, the Security Registrar shall have received the assignment
         form attached to the Security duly executed by the transferor Holder or
         such Holder's attorney duly authorized in writing.

                  (3)  Exchanges between Global Security and Non-Global
         Security.  A beneficial interest in a Global Security may be exchanged
         for a Security that is not a Global Security as provided in Section
         3.05.

                  (c)  Restricted Securities Legend.  (1)  Except as set forth
below, all Securities shall bear the Restricted Securities Legend set forth in
Section 2.02.

                  (2) Subject to Section 3.06(d) and to the following clauses of
         this Section 3.06(c), a Security (other than a Global Security) that
         does not bear a Restricted Securities Legend may be issued in exchange
         for or in lieu of a Restricted Security or any portion thereof that
         bears such legend if, in the Company's judgment, placing such a legend
         upon such new Security is not necessary to ensure compliance with the
         registration requirements of the Securities Act, and
   42
                                                                              32


         the Trustee, at the written direction of the Company in the form of an
         Officers' Certificate, shall countersign and deliver such a new
         Security.

                  (3) Notwithstanding the foregoing provisions of this Section
         3.06(c), a successor Security of a Security that does not bear a
         Restricted Securities Legend shall not bear such form of legend unless
         the Company has reasonable cause to believe that such successor
         Security is a "restricted security" within the meaning of Rule 144
         under the Securities Act, in which case the Trustee, at the written
         direction of the Company in the form of an Officers' Certificate, shall
         countersign and deliver a new Security bearing a Restricted Securities
         Legend in exchange for such successor Security.

                  (4) Upon any sale or transfer of a Restricted Security
         (including any Restricted Security represented by a Global Security)
         pursuant to an effective registration statement under the Securities
         Act or pursuant to Rule 144 under the Securities Act after such
         registration ceases to be effective: (A) in the case of any Restricted
         Security that is a definitive Security, the Security Registrar shall
         permit the Holder thereof to exchange such Restricted Security for a
         definitive Security that does not bear the Restricted Securities Legend
         and shall rescind any restriction on the transfer of such Restricted
         Security; and (B) in the case of any Restricted Security that is
         represented by a Global Security, the Security Registrar shall permit
         the Holder of such Global Security to exchange such Global Security for
         another Global Security that does not bear the Restricted Securities
         Legend.

                  (5) If Restricted Securities are being presented or
         surrendered for transfer or exchange then there shall be (if so
         required by the Trustee), (A) if such Restricted Securities are being
         delivered to the Security Registrar by a Holder for registration in the
         name of such Holder, without transfer, a certification from such Holder
         to that effect; or (B) if such Restricted Securities are being
         transferred, a certification from the transferor as to the compliance
         with the restrictions set forth in the Restricted Securities Legend.
   43
                                                                              33


                  SECTION 3.07. Mutilated, Destroyed, Lost and Stolen
Securities. If any mutilated Security is surrendered to the Trustee, the Company
shall execute and the Trustee shall authenticate and make available for delivery
in exchange therefor a new Security of like tenor and principal amount and
bearing a number not contemporaneously outstanding.

                  If there shall be delivered to the Company and the Trustee (i)
evidence to their satisfaction of the destruction, loss or theft of any Security
and (ii) such security or indemnity as may be required by them to save each of
them and any agent of either of them harmless, then, in the absence of notice to
the Company or the Trustee that such Security has been acquired by a bona fide
purchaser, the Company shall execute and the Trustee shall authenticate and
deliver, in lieu of any such destroyed, lost or stolen Security, a new Security
of like tenor and principal amount and bearing a number not contemporaneously
outstanding.

                  In case any such mutilated, destroyed, lost or stolen Security
has become or is about to become due and payable, the Company in its discretion
may, instead of issuing a new Security, pay such Security.

                  Upon the issuance of any new Security under this Section, the
Company may require the payment of a sum sufficient to cover any tax or other
governmental charge that may be imposed in relation thereto and any other
expenses (including the fees and expenses of the Trustee) connected therewith.

                  Every new Security issued pursuant to this Section in lieu of
any destroyed, lost or stolen Security shall constitute an original additional
contractual obligation of the Company, whether or not the destroyed, lost or
stolen Security shall be at any time enforceable by anyone, and shall be
entitled to all the benefits of this Indenture equally and proportionately with
any and all other Securities duly issued hereunder.

                  The provisions of this Section are exclusive and shall
preclude (to the extent lawful) all other rights and remedies with respect to
the replacement or payment of mutilated, destroyed, lost or stolen Securities.

                  SECTION 3.08. Payment of Interest; Interest Rights Preserved.
Interest on any Security which is pay-
   44
                                                                              34


able, and is punctually paid or duly provided for, on any Interest Payment Date
shall be paid to the Person in whose name that Security (or one or more
Predecessor Securities) is registered at the close of business on the Regular
Record Date.

                  Any interest on any Security which is payable, but is not
punctually paid or duly provided for, on any Interest Payment Date (herein
called "Defaulted Interest") shall forthwith cease to be payable to the Holder
on the relevant Regular Record Date by virtue of having been such Holder, and
such Defaulted Interest may be paid by the Company, at its election in each
case, as provided in clause (1) or (2) below:

                  (1) The Company may elect to make payment of any Defaulted
         Interest to the Persons in whose names the Securities (or their
         respective Predecessor Securities) are registered at the close of
         business on a Special Record Date (as defined below) for the payment of
         such Defaulted Interest, which shall be fixed in the following manner.
         The Company shall notify the Trustee in writing of the amount of
         Defaulted Interest proposed to be paid on each Security and the date of
         the proposed payment, and at the same time the Company shall deposit
         with the Trustee an amount of money equal to the aggregate amount
         proposed to be paid in respect of such Defaulted Interest or shall make
         arrangements satisfactory to the Trustee for such deposit prior to the
         date of the proposed payment, such money when deposited to be held in
         trust for the benefit of the Persons entitled to such Defaulted
         Interest as in this clause provided. Thereupon the Trustee shall fix a
         special record date (the "Special Record Date") for the payment of such
         Defaulted Interest which shall be not more than 15 days and not less
         than 10 days prior to the date of the proposed payment and not less
         than 10 days after the receipt by the Trustee of the notice of the
         proposed payment. The Trustee shall promptly notify the Company of such
         Special Record Date and, in the name and at the expense of the Company,
         shall cause notice of the proposed payment of such Defaulted Interest
         and the Special Record Date therefor to be mailed, first-class postage
         prepaid, to each Holder at his address as it appears in the Security
         Register, not less than 10 days prior to such Special Record Date.
         Notice of the proposed payment of such Defaulted Interest and the
         Special Record Date therefor having
   45
                                                                              35


         been so mailed, such Defaulted Interest shall be paid to the Persons in
         whose names the Securities (or their respective Predecessor Securities)
         are registered at the close of business on such Special Record Date and
         shall no longer be payable pursuant to the following clause (2).

                  (2) The Company may make payment of any Defaulted Interest in
         any other lawful manner not inconsistent with the requirements of any
         securities exchange on which the Securities may be listed, and, if so
         listed, upon such notice as may be required by such exchange (or by the
         Trustee if the Securities are not listed), if, after notice given by
         the Company to the Trustee of the proposed payment pursuant to this
         clause, such manner of payment shall be deemed practicable by the
         Trustee provided that any such payment will be made in coin or currency
         of the United States of America which at the time of payment is a legal
         tender for payment of public and private debt.

                  Subject to the foregoing provisions of this Section, each
Security delivered under this Indenture upon registration of transfer of or in
exchange for or in lieu of any other Security shall carry the rights to interest
accrued and unpaid, and to accrue (including in each such case Compounded
Interest), which were carried by such other Security.

                  In the case of any Security which is converted after any
Regular Record Date and on or prior to the next succeeding Interest Payment Date
(other than any Security whose Maturity is prior to such Interest Payment Date),
interest whose Stated Maturity is on such Interest Payment Date shall be payable
on such Interest Payment Date notwithstanding such conversion, and such
interest (whether or not punctually paid or duly provided for) shall be paid to
the Person in whose name that Security (or one or more Predecessor Securities)
is registered at the close of business on such Regular Record Date. Except as
otherwise expressly provided in the immediately preceding sentence, in the case
of any Security that is converted prior to any Regular Record Date, interest
whose Stated Maturity is after the date of conversion of such Security shall not
be payable, and the Company shall not make nor be required to make any other
payment, adjustment or allowance with respect to accrued but unpaid interest
(including Additional Payments)
   46
                                                                              36


on the Securities being converted, which shall be deemed to be paid in full.

                  SECTION 3.09. Persons Deemed Owners. The Company, the Trustee
and any agent of the Company or the Trustee may treat the Person in whose name
any Security is registered as the owner of such Security for the purpose of
receiving payment of principal of and (subject to Section 3.08) interest on such
Security and for all other purposes whatsoever, whether or not such Security be
overdue, and neither the Company, the Trustee nor any agent of the Company or
the Trustee shall be affected by notice to the contrary. No holder of any
beneficial interest in any Global Security held on its behalf by a Depositary
shall have any rights under this Indenture with respect to such Global Security,
and such Depositary may be treated by the Company, the Trustee and any agent of
the Company or the Trustee as the owner of such Global Security for all purposes
whatsoever. Notwithstanding the foregoing, nothing herein shall prevent the
Company or the Trustee from giving effect to any written certification, proxy,
or other authorization furnished by a Depositary or impair, as between the
Depositary and such holders of beneficial interests, the operation of customary
practices governing the exercise of the rights of the Depositary (or its
nominee) as Holder of any Security.

                  SECTION 3.10. Cancellation. All Securities surrendered for
payment, redemption, registration of transfer or exchange or conversion shall,
if surrendered to any Person other than the Trustee, be delivered to the Trustee
and shall be promptly canceled by it. The Company may at any time deliver to the
Trustee for cancelation any Securities previously authenticated and delivered
hereunder which the Company may have acquired in any manner whatsoever, and all
Securities so delivered shall be promptly canceled by the Trustee. No Securities
shall be authenticated in lieu of or in exchange for any Securities canceled as
provided in this Section, except as expressly permitted by this Indenture. All
canceled Securities held by the Trustee shall be disposed of as directed by a
Company Order; provided, however, that the Trustee shall not be required to
destroy the certificates representing such canceled Securities.

                  SECTION 3.11. Right of Set Off. Notwithstanding anything to
the contrary in this Indenture, the Company shall have the right to set off any
payment it is otherwise
   47
                                                                              37


required to make hereunder to the extent the Company has theretofore made, or is
concurrently on the date of such payment making, a payment under the Guarantee.

                  SECTION 3.12. CUSIP Numbers. The Company in issuing the
Securities may use "CUSIP" numbers (if then generally in use), and, if so, the
Trustee shall use "CUSIP" numbers in notices of redemption as a convenience to
Holders; provided, that any such notice may state that no representation is made
as to the correctness of such numbers either as printed on the Securities or as
contained in any notice of a redemption and that reliance may be placed only on
the other identification numbers printed on the Securities, and any such
redemption shall not be affected by any defect in or omission of such numbers.

                  SECTION 3.13. Extension of Interest Payment Period; Notice of
Extension. (a) So long as no Event of Default has occurred and is continuing,
the Company shall have the right, at any time during the term of this Security,
from time to time to defer payments of interest by extending for successive
periods not exceeding 20 consecutive quarters for each such period (a "Deferral
Period"); provided that no Deferral Period may extend beyond April 1, 2028. To
the extent permitted by applicable law, interest, the payment of which has been
deferred because of the extension of the interest payment period pursuant to
this Section 3.13, will bear interest thereon at the Applicable Rate compounded
quarterly for each quarter of the Deferral Period ("Compounded Interest"). On
the applicable Payment Resumption Date, the Company shall pay all interest then
accrued and unpaid on the Securities, including any Compounded Interest that
shall be payable to the Holders of the Securities in whose names the Securities
are registered in the Security Register on the Regular Record Date fixed for
such Payment Resumption Date. A Deferral Period shall terminate upon the payment
by the Company of all interest then accrued and unpaid on the Securities
(together with interest thereon accrued at an annual rate equal to the
Applicable Rate, compounded quarterly, to the extent permitted by applicable
law). Before the termination of any Deferral Period, the Company may further
extend such period as provided in paragraph (b) of this Section 3.13, provided
that such period together with all such further extensions thereof shall not
exceed 20 consecutive quarters or extend beyond the Stated Maturity of the
Securities. Upon the termination of any Deferral Period, and subject to the
foregoing requirements, the Company may elect to begin a new
   48
                                                                              38


Deferral Period. No interest shall be due and payable during a Deferral Period
except on the Payment Resumption Date as determined pursuant to paragraph (b) of
this Section 3.13. There is no limitation on the number of times that the
Company may elect to begin a Deferral Period.

                  (b) The Company shall give the Holder of the Security and the
Trustee written notice (a "Deferral Notice") of its selection of a Deferral
Period at least ten days prior to the record date for any distributions that
would have been payable on the Trust Securities except for the decision to begin
or extend a Deferral Period. On or prior to the Regular Record Date immediately
preceding the Interest Payment Date on which the Company elects to pay all
interest then accrued and unpaid on the Securities, including Compound Interest,
(the "Payment Resumption Date") the Company shall give the Holder of the
Security and the Trustee written notice that the Deferral Period will end on
such Payment Resumption Date. Notwithstanding the provision of such notice, the
Company may elect to further extend the Deferral Period, subject to the
limitations set forth in Section 3.13(a), by providing the Holder of the
Security and the Trustee with a new Deferral Notice not less than three Business
Days prior to the Regular Record Date immediately preceding the previously
scheduled Payment Resumption Date. The Company may elect to pay all interest
then accrued and unpaid on the Securities, including Compound Interest, on an
Interest Payment Date prior to its most recently established Payment Resumption
Date provided that the Company gives the Holder of the Security and the Trustee
a new Deferral Notice setting forth the revised Payment Resumption Date at least
three Business Days prior to the Regular Record Date for such revised Payment
Resumption Date.

                  (c) The quarter in which any Deferral Notice is given pursuant
to paragraph (b) hereof shall be counted as one of the 20 quarters permitted in
the maximum Deferral Period permitted under paragraph (a) hereof.

                  SECTION 3.14. Paying Agent, Security Registrar and Conversion
Agent. The Trustee will initially act as Paying Agent, Security Registrar and
Conversion Agent. The Company may change any Paying Agent, Security Registrar,
co-registrar or Conversion Agent without prior notice. The Company or any of its
Affiliates may act in any such capacity.
   49
                                                                              39


                                   ARTICLE IV

                           Satisfaction and Discharge

                  SECTION 4.01. Satisfaction and Discharge of Indenture. This
Indenture shall cease to be of further effect (except as to any surviving rights
of conversion, registration of transfer or exchange of Securities herein
expressly provided for), and the Trustee, on demand of and at the expense of the
Company, shall execute proper instruments acknowledging satisfaction and
discharge of this Indenture, when

                  (1) either

                           (A) all Securities theretofore authenticated and
                  delivered (other than (i) Securities which have been
                  destroyed, lost or stolen and which have been replaced or paid
                  as provided in Section 3.06 and (ii) Securities for whose
                  payment money has theretofore been deposited in trust or
                  segregated and held in trust by the Company and thereafter
                  repaid to the Company or discharged from such trust, as
                  provided in Section 10.03) have been delivered to the Trustee
                  for cancellation; or

                           (B) all such Securities not theretofore
                  delivered to the Trustee for cancellation

                                    (i) have become due and payable, or

                                    (ii) will become due and payable at their
                           Stated Maturity within one year, or

                                    (iii) are to be called for redemption within
                           one year under arrangements satisfactory to the
                           Trustee for the giving of notice of redemption by the
                           Trustee in the name, and at the expense, of the
                           Company

                  and the Company, in the case of (i), (ii) or (iii) above, has
                  deposited or caused to be deposited with the Trustee as trust
                  funds in trust for the purpose an amount sufficient to pay and
                  discharge the entire indebtedness on such Securities not
                  theretofore delivered to the Trustee for cancellation, for
                  principal and interest (including Compounded Interest) to the
                  date of such deposit
   50
                                                                              40


         (in the case of Securities which have become due and payable) or to the
         Stated Maturity or Redemption Date, as the case may be;

                  (2) the Company has paid or caused to be paid all
         other sums payable hereunder by the Company; and

                  (3) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that all conditions
         precedent herein provided for relating to the satisfaction and
         discharge of this Indenture have been complied with.

Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee under Section 6.07 and, if money shall
have been deposited with the Trustee pursuant to subclause (B) of clause (1) of
this Section, the obligations of the Trustee under Section 4.02 and the last
paragraph of Section 10.03 shall survive.

                  SECTION 4.02. Application of Trust Money. Subject to the
provisions of the last paragraph of Section 10.03, all money deposited with the
Trustee pursuant to Section 4.01 shall be held in trust and applied by it, in
accordance with the provisions of the Securities and this Indenture, to the
payment, either directly or through any Paying Agent (including the Company
acting as its own Paying Agent) as the Trustee may determine, to the Persons
entitled thereto, of the principal and interest for whose payment such money has
been deposited with the Trustee. All moneys deposited with the Trustee pursuant
to Section 4.01 (and held by it or any Paying Agent) for the payment of
Securities subsequently converted shall be returned to the Company upon Company
Request.


                                    ARTICLE V

                                    Remedies

                  SECTION 5.01. Events of Default. "Event of Default," wherever
used herein, means any one of the following events that has occurred and is
continuing (whatever the reason for such Event of Default and whether it shall
be occasioned by the provisions of Article XI or be voluntary or involuntary or
be effected by operation of law



   51

                                                                              41


or pursuant to any judgment, decree or order of any court or any order, rule or
regulation of any administrative or governmental body):

                  (1) default in the payment of any interest upon any Security,
         including any Additional Payments, when it becomes due and payable, and
         continuance of such default for a period of 30 days (subject to the
         deferral of any due date in the case of a Deferral Period); or

                  (2) default in the payment of the principal of any Security
         when due, whether at its Maturity, upon redemption, by declaration of
         acceleration or otherwise; or

                  (3) default in the observation or performance, in any material
         respect, of any covenant of the Company in this Indenture (other than a
         covenant a default in the performance of which or the breach of which
         is elsewhere in this Section specifically dealt with), and continuance
         of such default for a period of 90 days after there has been given, by
         registered or certified mail, to the Company by the Trustee or to the
         Company and the Trustee by the Holders of at least 25% in aggregate
         outstanding principal amount of the Securities a written notice
         specifying such default and requiring it to be remedied; or

                  (4) failure by the Company to issue and deliver Common Stock
         upon an election to convert the Securities into Common Stock; or

                  (5) the entry or a decree or order by a court having
         jurisdiction in the premises adjudging the Company as bankrupt or
         insolvent, or approving as properly filed a petition seeking
         reorganization, arrangement, adjustment or composition of or in respect
         of the Company under any applicable federal or state bankruptcy,
         insolvency, reorganization or other similar law, or appointing a
         receiver, liquidator, assignee, trustee, sequestrator (or other similar
         official) of the Company or of any substantial part of its property or
         ordering the winding up or liquidation of its affairs, and the
         continuance of any such decree or order unstayed and in effect for a
         period of 60 consecutive days; or
   52
                                                                              42


                  (6) the institution by the Company of proceedings to be
         adjudicated a bankrupt or insolvent, or the consent by it to the
         institution of bankruptcy or insolvency proceedings against it, or the
         filing by it of a petition or answer or consent seeking reorganization
         or relief under any applicable federal or state bankruptcy, insolvency,
         reorganization or other similar law, or the consent by it to the filing
         of any such petition or to the appointment of a receiver, liquidator,
         assignee, trustee, sequestrator (or other similar official) of the
         Company or of any substantial part of its property, or the making by it
         of an assignment for the benefit of creditors, or the admission by it
         in writing of its inability to pay its debts generally as they become
         due and its willingness to be adjudicated a bankrupt, or the taking of
         corporate action by the Company in furtherance of any such action; or

                  (7) the voluntary or involuntary dissolution, winding up or
         termination of the Trust, except in connection with (i) the
         distribution of Securities to holders of Preferred Securities in
         liquidation or redemption of their interests in the Trust, (ii) the
         redemption of all of the outstanding Preferred Securities of the Trust
         or (iii) certain mergers, consolidations or amalgamations, each as
         permitted by the Declaration.

                  SECTION 5.02. Acceleration of Maturity; Rescission and
Annulment. If an Event of Default occurs and is continuing, then and in every
such case the Trustee or the Holders of not less than 25% in principal amount of
the Outstanding Securities may declare the principal of all the Outstanding
Securities and any other amounts payable hereunder (including any Additional
Payments) to be due and payable immediately, by a notice in writing to the
Company (and to the Trustee if given by Holders); provided that, if the Property
Trustee is the sole Holder of the Securities and if upon an Event of Default,
the Trustee or the Holders of not less than 25% in principal amount of the
Outstanding Securities fail to declare the principal of all the Securities to be
immediately due and payable, the holders of at least 25% in aggregate
liquidation amount of Preferred Securities then outstanding shall have such
right by a notice in writing to the Company and the Trustee; and upon
any such declaration such principal and all accrued interest shall become
immediately due and payable. Upon any such
   53
                                                                              43


declaration such principal amount (or specified amount) of and the accrued
interest (including any Additional Payments) on all the Securities of such
series shall then become immediately due and payable; provided that the payment
of principal and interest on such Securities (including Additional Payments)
shall remain subordinated to the extent provided in Article XII.

                  At any time after such a declaration of acceleration has been
made and before a judgment or decree for payment of the money due has been
obtained by the Trustee as provided in this Article hereinafter, the Holders of
a majority in aggregate principal amount of the Outstanding Securities, by
written notice to the Company and the Trustee, may rescind and annul such
declaration and its consequences if

                  (1) the Company has paid or deposited with the Trustee a sum
         sufficient to pay

                           (A) all overdue interest (including any
                  Compounded Interest) on all Securities,

                           (B) the principal of any Securities which have become
                  due otherwise than by such declaration of acceleration and
                  interest thereon at the rate borne by the Securities, and

                           (C) all sums paid or advanced by the Trustee
                  hereunder and the reasonable compensation, expenses,
                  disbursements and advances of the Trustee, its agents and
                  counsel;

         and

                  (2) all Events of Default, other than the non-payment of the
         principal of Securities which have become due solely by such
         declaration of acceleration, have been cured or waived as provided in
         Section 5.13.

                  The Company is required to file annually with the Trustee a
certificate as to whether or not the Company is in compliance with all the
conditions and covenants applicable to it under this Indenture.

                  No such rescission shall affect any subsequent default or
impair any right consequent thereon.
   54
                                                                              44


                  SECTION 5.03. Collection of Indebtedness and Suits for
Enforcement by Trustee. The Company covenants that if

                  (1) default is made in the payment of any interest (including
         any Compounded Interest) on any Security when such interest becomes due
         and payable and such default continues for a period of 30 days, or

                  (2) default is made in the payment of the
         principal of any Security at the Stated Maturity
         thereof,

the Company will, upon demand of the Trustee, pay to it, for the benefit of the
Holders of such Securities, the whole amount then due and payable on such
Securities for principal and interest (including any Additional Payments) and,
to the extent that payment thereof shall be legally enforceable, interest on any
overdue principal and on any overdue interest (including any Additional Sums),
at the rate borne by the Securities, and, in addition thereto, all amounts owing
to the Trustee under Section 6.07.

                  If an Event of Default occurs and is continuing, the Trustee
may in its discretion proceed to protect and enforce its rights and the rights
of the Holders by such appropriate judicial proceedings as the Trustee shall
deem most effectual to protect and enforce any such rights, whether for the
specific enforcement of any covenant or agreement in this Indenture or in aid of
the exercise of any power granted herein, or to enforce any other proper remedy.

                  SECTION 5.04. Trustee May File Proofs of Claim. In case of any
judicial proceeding relative to the Company (or any other obligor upon the
Securities), its property or its creditors, the Trustee shall be entitled and
empowered, by intervention in such proceeding or otherwise, to take any and all
actions authorized under the Trust Indenture Act in order to have claims of the
Holders and the Trustee allowed in any such proceeding. In particular, the
Trustee shall be authorized to collect and receive any moneys or other property
payable or deliverable on any such claims and to distribute the same; and any
custodian, receiver, assignee, trustee, liquidator, sequestrator or other
similar official in any such judicial proceeding is hereby authorized by each
Holder to make such payments to the Trustee and, in the event that the Trustee
shall consent to the making of such payments directly to the Holders, to pay to
the Trustee any
   55
                                                                              45


amount due it and any predecessor Trustee under Section 6.07.

                  No provision of this Indenture shall be deemed to authorize
the Trustee to authorize or consent to or accept or adopt on behalf of any
Holder any plan of reorganization, arrangement, adjustment or composition
affecting the Securities or the rights of any Holder thereof or to authorize
the Trustee to vote in respect of the claim of any Holder in any such
proceeding.

                  SECTION 5.05. Trustee May Enforce Claims Without Possession of
Securities. All rights of action and claims under this Indenture or the
Securities may be prosecuted and enforced by the Trustee without the possession
of any of the Securities or the production thereof in any proceeding relating
thereto, and any such proceeding instituted by the Trustee shall be brought in
its own name as trustee of an express trust, and any recovery of judgment shall,
after provision for the payment of all the amounts owing to the Trustee and any
predecessor Trustee under Section 6.07, be for the ratable benefit of the
Holders of the Securities in respect of which such judgment has been recovered.

                  SECTION 5.06. Application of Money Collected. Subject to
Article XII, any money collected by the Trustee pursuant to this Article shall
be applied in the following order, at the date or dates fixed by the Trustee
and, in case of the distribution of such money on account of principal or
interest (including any Additional Payments), upon presentation of the
Securities and the notation thereon of the payment if only partially paid and
upon surrender thereof if fully paid:

                  FIRST:  To the payment of all amounts due the
         Trustee and any predecessor Trustee under Section 6.07;

                  SECOND: To the payment of the amounts then due and unpaid for
         principal of and interest (including any Additional Payments) on the
         Securities in respect of which or for the benefit of which such money
         has been collected, ratably, without preference or priority of any
         kind, according to the amounts due and payable on such Securities for
         principal and interest (including any Compounded Interest),
         respectively; and

                  THIRD:  The balance, if any, to the Company.
   56
                                                                              46


                  SECTION 5.07. Limitation on Suits. Subject to Section 5.08, no
Holder of any Security shall have any right to institute any proceeding,
judicial or otherwise, with respect to this Indenture, or for the appointment of
a receiver or trustee, or for any other remedy hereunder, unless

                  (1) such Holder has previously given written notice to the
         Trustee of a continuing Event of Default;

                  (2) the Holders of not less than 25% in aggregate principal
         amount of the Outstanding Securities shall have made written request to
         the Trustee to institute proceedings in respect of such Event of
         Default, in its own name as Trustee hereunder;

                  (3) such Holder or Holders have offered to the Trustee
         reasonable indemnity against the costs, expenses and liabilities to be
         incurred in compliance with such request;

                  (4) the Trustee for 60 days after its receipt of such notice,
         request and offer of indemnity has failed to institute any such
         proceeding; and

                  (5) no direction inconsistent with such written request has
         been given to the Trustee during such 60-day period by the Holders of a
         majority in principal amount of the Outstanding Securities;

it being understood and intended that no one or more Holders shall have any
right in any manner whatever by virtue of, or by availing of, any provision of
this Indenture to affect, disturb or prejudice the rights of any other Holders,
or to obtain or to seek to obtain priority or preference over any other Holders
or to enforce any right under this Indenture, except in the manner herein
provided and for the equal and ratable benefit of all the Holders.

                  SECTION 5.08. Unconditional Right of Holders to Receive
Principal and Interest and to Convert. Notwithstanding any other provision in
this Indenture, the Holder of any Security shall have the right, which is
absolute and unconditional, to receive payment of the principal of and (subject
to Section 3.08) interest (including any Additional Payments) on such Security
on the respective Stated Maturities expressed in such Security (or, in the case
of redemption, on the Redemption Date) and to
   57
                                                                              47


convert such Security in accordance with Article XIII and to institute suit for
the enforcement of any such payment and right to convert, and such rights shall
not be impaired without the consent of such Holder. If the Property Trustee is
the sole Holder of the Securities, any holder of the Preferred Securities shall
have the right to institute suit on behalf of the Trust for the enforcement of
any such payment and right to convert.

                  SECTION 5.09. Restoration of Rights and Remedies. If the
Trustee or any Holder has instituted any proceeding to enforce any right or
remedy under this Indenture and such proceeding has been discontinued or
abandoned for any reason, or has been determined adversely to the Trustee or to
such Holder, then and in every such case, subject to any determination in such
proceeding, the Company, the Trustee and the Holders shall be restored severally
and respectively to their former positions hereunder and thereafter all rights
and remedies of the Trustee and the Holders shall continue as though no such
proceeding had been instituted.

                  SECTION 5.10. Rights and Remedies Cumulative. Except as
otherwise provided with respect to the replacement or payment of mutilated,
destroyed, lost or stolen Securities in the last paragraph of Section 3.07, no
right or remedy herein conferred upon or reserved to the Trustee or to the
Holders is intended to be exclusive of any other right or remedy, and every
right and remedy shall, to the extent permitted by law, be cumulative and in
addition to every other right and remedy given hereunder or now or hereafter
existing at law or in equity or otherwise. The assertion or employment of any
right or remedy hereunder, or otherwise, shall not prevent the concurrent
assertion or employment of any other appropriate right or remedy.

                  SECTION 5.11. Delay or Omission Not Waiver. No delay or
omission of the Trustee or of any Holder of any Security to exercise any right
or remedy accruing upon any Event of Default shall impair any such right or
remedy or constitute a waiver of any such Event of Default or an acquiescence
therein. Every right and remedy given by this Article or by law to the Trustee
or to the Holders may be exercised from time to time, and as often as may be
deemed expedient, by the Trustee or by the Holders, as the case may be.

                  SECTION 5.12. Control by Holders. The Holders of a majority in
principal amount of the Outstanding Securities
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                                                                              48


shall have the right to direct the time, method and place of conducting any
proceeding for any remedy available to the Trustee or exercising any trust or
power conferred on the Trustee; provided, that

                  (1) such direction shall not be in conflict with any rule of
         law or with this Indenture; and

                  (2) the Trustee may take any other action deemed proper by the
         Trustee which is not inconsistent with such direction.

                  SECTION 5.13. Waiver of Past Defaults. Subject to Section 9.02
hereof, the Holders of not less than a majority in principal amount of the
Outstanding Securities may on behalf of the Holders of all the Securities waive
any past default hereunder and its consequences, except a default

                  (1) in the payment of the principal of, premium, if any, or
         interest (including any Additional Payments) on any Security (unless
         such default has been cured and a sum sufficient to pay all matured
         installments of interest and principal due otherwise than by
         acceleration has been deposited with the Trustee); or

                  (2) in respect of a covenant or provision hereof which under
         Article IX cannot be modified or amended without the consent of the
         Holder of each Outstanding Security affected.

                  Upon any such waiver, such default shall cease to exist, and
any Event of Default arising therefrom shall be deemed to have been cured, for
every purpose of this Indenture; but no such waiver shall extend to any
subsequent or other default or impair any right consequent thereon.

                  SECTION 5.14. Undertaking for Costs. In any suit for the
enforcement of any right or remedy under this Indenture, or in any suit against
the Trustee for any action taken, suffered or omitted by it as Trustee, a court
may require any party litigant in such suit to file an undertaking to pay the
costs of such suit, and may assess costs against any such party litigant, in the
manner and to the extent provided in the Trust Indenture Act; provided, that
neither this Section nor the Trust Indenture Act shall be deemed to authorize
any court to require such an undertaking or to make such an assessment in any
suit instituted by the
   59
                                                                              49


Company or the Trustee or in any suit for the enforcement of the right to
receive the principal of and interest (including any Additional Payments) on any
Security or to convert any Security in accordance with Article XIII.

                  SECTION 5.15. Waiver of Stay or Extension Laws. The Company
covenants (to the extent that it may lawfully do so) that it will not at any
time insist upon, or plead, or in any manner whatsoever claim or take the
benefit or advantage of, any stay or extension law wherever enacted, now or at
any time hereafter in force, which may affect the covenants or the performance
of this Indenture; and the Company (to the extent that it may lawfully do so)
hereby expressly waives all benefit or advantage of any such law and covenants
that it will not hinder, delay or impede the execution of any power herein
granted to the Trustee, but will suffer and permit the execution of every such
power as though no such law had been enacted.

                  SECTION 5.16. Enforcement by Holders of Preferred Securities.
Notwithstanding anything to the contrary contained herein, if an Event of
Default has occurred and is continuing and such event is attributable to the
failure of the Company to pay interest or principal on the Securities on the
date such interest or principal is otherwise payable, the Company acknowledges
that, in such event, a holder of Preferred Securities may institute a legal
proceeding directly for enforcement of payment to such Holder of the principal
of or interest on the Debentures having a principal amount equal to the
aggregate liquidation amount of the Preferred Securities of such Holder (a
"Direct Action") on or after the respective due date specified in the
Securities. The Company may not amend this Indenture to remove the foregoing
right to bring a Direct Action without the prior written consent of all the
holders of Preferred Securities. Notwithstanding any payment made to such holder
of Preferred Securities by the Company in connection with a Direct Action, the
Company shall remain obligated to pay the principal of and interest on the
Securities (including Additional Payments, if any) held by the Trust or the
Property Trustee and the Company shall be subrogated to the rights of the holder
of such Preferred Securities with respect to payments on the Preferred
Securities to the extent of any payments made by the Company to such holder in
any Direct Action. The holders of Preferred Securities will not be able to
exercise directly any other remedy available to the Holders of the Securities.
   60
                                                                              50


                                   ARTICLE VI

                                   The Trustee

                  SECTION 6.01. Certain Duties and Responsibilities. (a) Except
during the continuance of an Event of Default, the Trustee undertakes to perform
such duties and only such duties as are specifically set forth in this
Indenture, and no implied covenants or obligations shall be read into this
Indenture against the Trustee.

                  (b) In case an Event of Default has occurred and is
continuing, the Trustee shall exercise such of the rights and powers vested in
it by this Indenture, and use the same degree of care and skill in their
exercise, as a prudent person would exercise or use under the circumstances in
the conduct of his own affairs.

                  (c) Notwithstanding the foregoing, (i) the duties and
responsibilities of the Trustee shall be as provided by the Trust Indenture Act
and (ii) no provision of this Indenture shall require the Trustee to expend or
risk its own funds or otherwise incur any financial liability in the performance
of any of its duties hereunder, or in the exercise of any of its rights or
powers, if it shall have reasonable grounds for believing that repayment of such
funds or adequate indemnity against such risk or liability is not reasonably
assured to it. Whether or not therein expressly so provided, every provision of
this Indenture relating to the conduct or affecting the liability of or
affording protection to the Trustee shall be subject to the provisions of this
Section.

                  SECTION 6.02. Notice of Defaults. The Trustee shall give the
Holders notice of any default hereunder as and to the extent provided by the
Trust Indenture Act; provided, however, that in the case of any default of the
character specified in Section 5.01(3), no such notice to Holders shall be given
until at least 30 days after the occurrence thereof. For the purpose of this
Section, the term "default" means any event which is, or after notice or lapse
of time or both would become, an Event of Default.

                  SECTION 6.03. Certain Rights of Trustee. Subject to the
provisions of Section 6.01:

                  (a) the Trustee may conclusively rely and shall be protected
         in acting or refraining from acting upon any
   61
                                                                              51


         resolution, certificate, statement, instrument, opinion, report,
         notice, request, direction, consent, order, bond, debenture, note,
         other evidence of indebtedness or other paper or document believed by
         it to be genuine and to have been signed or presented by the proper
         party or parties;

                  (b) any request or direction of the Company mentioned herein
         shall be sufficiently evidenced by a Company Request or Company Order
         and any resolution of the Board of Directors may be sufficiently
         evidenced by a Board Resolution;

                  (c) whenever in the administration of this Indenture the
         Trustee shall deem it desirable that a matter be proved or established
         prior to taking, suffering or omitting any action hereunder, the
         Trustee (unless other evidence be herein specifically prescribed) may,
         in the absence of bad faith on its part, rely upon an Officers'
         Certificate;

                  (d) the Trustee may consult with counsel of its choice and the
         advice of such counsel or any Opinion of Counsel shall be full and
         complete authorization and protection in respect of any action taken,
         suffered or omitted by it hereunder in good faith and in reliance
         thereon;

                  (e) the Trustee shall be under no obligation to exercise any
         of the rights or powers vested in it by this Indenture at the request
         or direction of any of the Holders pursuant to this Indenture, unless
         such Holders shall have offered to the Trustee reasonable security or
         indemnity against the costs, expenses and liabilities which might be
         incurred by it in compliance with such request or direction;

                  (f) the Trustee shall not be bound to make any investigation
         into the facts or matters stated in any resolution, certificate,
         statement, instrument, opinion, report, notice, request, direction,
         consent, order, bond, debenture, note, other evidence of indebtedness
         or other paper or document, but the Trustee, in its discretion, may
         make such further inquiry or investigation into such facts or matters
         as it may see fit, and, if the Trustee shall determine to make such
         further inquiry or investigation, it shall be entitled to reasonable
         examination of the books,
   62
                                                                              52


         records and premises of the Company, personally or by agent or
         attorney;

                  (g) the Trustee may execute any of the trusts or powers
         hereunder or perform any duties hereunder either directly or by or
         through agents or attorneys and the Trustee shall not be responsible
         for any misconduct or negligence on the part of any agent or attorney
         appointed with due care by it hereunder; and

                  (h) the Trustee shall not be liable for any action taken,
         suffered, or omitted to be taken by it in good faith, without
         negligence or willful misconduct, and reasonably believed by it to be
         authorized or within the discretion or rights or powers conferred upon
         it by this Indenture.

                  SECTION 6.04. Not Responsible for Recitals or Issuance of
Securities. The recitals contained herein and in the Securities, except the
Trustee's certificates of authentication, shall be taken as the statements of
the Company, and the Trustee assumes no responsibility for their correctness.
The Trustee makes no representations as to the validity or sufficiency of this
Indenture or of the Securities. The Trustee shall not be accountable for the use
or application by the Company of the Securities or the proceeds thereof.

                  SECTION 6.05. May Hold Securities. The Trustee, any Paying
Agent, any Security Registrar or any other agent of the Company, in its
individual or any other capacity, may become the owner or pledgee of Securities
and, subject to Sections 6.08 and 6.13, may otherwise deal with the Company with
the same rights it would have if it were not Trustee, Paying Agent, Security
Registrar, or such other agent.

                  SECTION 6.06. Money Held in Trust. Money held by the Trustee
in trust hereunder need not be segregated from other funds except to the extent
required by law. The Trustee shall be under no liability for interest on any
money received by it hereunder except as otherwise agreed with the Company.

                  SECTION 6.07. Compensation and Reimbursement. The Company
agrees:

                  (1) to pay to the Trustee from time to time such reasonable
         compensation as the Company and the Trustee
   63
                                                                              53


         shall from time to time agree in writing for all services rendered by
         it hereunder (which compensation shall not be limited by any provision
         of law in regard to the compensation of a trustee of an express trust);

                  (2) except as otherwise expressly provided herein, to
         reimburse the Trustee upon its request for all reasonable expenses,
         fees, disbursements and advances incurred or made by the Trustee in
         accordance with any provision of this Indenture (including the
         reasonable compensation and the expenses and disbursements of its
         agents and counsel), except any such expense, disbursement or advance
         as may be attributable to its negligence or bad faith; and

                  (3) to indemnify the Trustee and any predecessor Trustee for,
         and to hold it harmless against, any loss, liability or expense
         incurred without negligence or bad faith on its part, arising out of or
         in connection with the acceptance or administration of this trust,
         including the costs and expenses of defending itself against any claim
         or liability in connection with the exercise or performance of any of
         its powers or duties hereunder.

                  SECTION 6.08. Disqualification; Conflicting Interests. If the
Trustee has or shall acquire a conflicting interest within the meaning of the
Trust Indenture Act, the Trustee shall either eliminate such interest or resign,
to the extent and in the manner provided by, and subject to the provisions of,
the Trust Indenture Act and this Indenture.

                  SECTION 6.09. Corporate Trustee Required; Eligibility. There
shall at all times be a Trustee hereunder which shall be a Person that is
eligible pursuant to the Trust Indenture Act to act as such and has a combined
capital and surplus of at least $50,000,000 and has its Corporate Trust Office
in New York, New York. If such Person publishes reports of condition at least
annually, pursuant to law or to the requirements of said supervising or
examining authority, then for the purposes of this Section, the combined capital
and surplus of such Person shall be deemed to be its combined capital and
surplus as set forth in its most recent report of condition so published. If at
any time the Trustee shall cease to be eligible in accordance with the
provisions of this Section,
   64
                                                                              54


it shall resign immediately in the manner and with the effect hereinafter
specified in this Article.

                  SECTION 6.10. Resignation and Removal; Appointment of
Successor. (a) No resignation or removal of the Trustee and no appointment of a
successor Trustee pursuant to this Article shall become effective until the
acceptance of appointment by the successor Trustee under Section 6.11.

                  (b) The Trustee may resign at any time by giving written
notice thereof to the Company. If an instrument of acceptance by a successor
Trustee shall not have been delivered to the Trustee within 30 days after the
giving of such notice of resignation, the resigning Trustee may petition any
court of competent jurisdiction for the appointment of a successor Trustee.

                  (c) The Trustee may be removed at any time by Act of the
Holders of a majority in principal amount of the Outstanding Securities,
delivered to the Trustee and to the Company.

                  (d)  If at any time:

                  (1) the Trustee shall fail to comply with Section 6.08 after
         written request therefor by the Company or by any Holder who has been a
         bona fide Holder of a Security for at least six months; or

                  (2) the Trustee shall cease to be eligible under Section 6.09
         and shall fail to resign after written request therefor by the Company
         or by any such Holder; or

                  (3) the Trustee shall become incapable of acting or shall be
         adjudged a bankrupt or insolvent or a receiver of the Trustee or of its
         property shall be appointed or any public officer shall take charge or
         control of the Trustee or of its property or affairs for the purpose of
         rehabilitation, conservation or liquidation;

then, in any such case, (i) the Company may remove the Trustee, or (ii) subject
to Section 5.14, any Holder who has been a bona fide Holder of a Security for at
least six months may, on behalf of himself and all others similarly situated,
petition any court of competent jurisdiction for
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                                                                              55


the removal of the Trustee and the appointment of a successor Trustee.

                  (e) If the Trustee shall resign, be removed or become
incapable of acting, or if a vacancy shall occur in the office of Trustee for
any cause, the Company, by a Board Resolution, shall promptly appoint a
successor Trustee. If, within one year after such resignation, removal or
incapability, or the occurrence of such vacancy, a successor Trustee shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities delivered to the Company and the retiring Trustee, the
successor Trustee so appointed shall, forthwith upon its acceptance of such
appointment, become the successor Trustee and supersede the successor Trustee
appointed by the Company. If no successor Trustee shall have been so appointed
by the Company or the Holders and accepted appointment in the manner
hereinafter provided, any Holder who has been a bona fide Holder of a Security
for at least six months may, on behalf of himself and all others similarly
situated, petition any court of competent jurisdiction for the appointment of a
successor Trustee.

                  (f) The Company shall give written notice of each resignation
and each removal of the Trustee and each appointment of a successor Trustee to
all Holders in the manner provided in Section 1.06. Each notice shall include
the name of the successor Trustee and the address of its Corporate Trust Office.

                  SECTION 6.11. Acceptance of Appointment by Successor. Every
successor Trustee appointed hereunder shall execute, acknowledge and deliver to
the Company and to the retiring Trustee an instrument accepting such
appointment, and thereupon the resignation or removal of the retiring Trustee
shall become effective and such successor Trustee, without any further act, deed
or conveyance, shall become vested with all the rights, powers, trusts and
duties of the retiring Trustee; provided, that on request of the Company or the
successor Trustee, such retiring Trustee shall, upon payment of its charges,
execute and deliver an instrument transferring to such successor Trustee all the
rights, powers and trusts of the retiring Trustee and shall duly assign,
transfer and deliver to such successor Trustee all property and money held by
such retiring Trustee hereunder. Upon request of any such successor Trustee, the
Company shall execute any and all instruments required to
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                                                                              56


more fully and certainly vest in and confirm to such successor Trustee all such
rights, powers and trusts.

                  No successor Trustee shall accept its appointment unless at
the time of such acceptance such successor Trustee shall be qualified and
eligible under this Article.

                  SECTION 6.12. Merger, Conversion, Consolidation or Succession
to Business. Any Person into which the Trustee may be merged or converted or
with which it may be consolidated, or any Person resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any Person
succeeding to all or substantially all the corporate trust business of the
Trustee, shall be the successor of the Trustee hereunder; provided such Person
shall be otherwise qualified and eligible under this Article, without the
execution or filing of any paper or any further act on the part of any of the
parties hereto. In case any Securities shall have been authenticated, but not
delivered, by the Trustee then in office, any successor by merger, conversion or
consolidation to such authenticating Trustee may adopt such authentication and
deliver the Securities so authenticated with the same effect as if such
successor Trustee had itself authenticated such Securities.

                  SECTION 6.13. Preferential Collection of Claims Against
Company. If and when the Trustee shall be or become a creditor of the Company
(or any other obligor upon the Securities), the Trustee shall be subject to the
provisions of the Trust Indenture Act regarding the collection of claims against
the Company (or any such other obligor).


                                   ARTICLE VII

                Holders' Lists and Reports by Trustee and Company

                  SECTION 7.01. Company to Furnish Trustee Names and Addresses
of Holders. The Company will furnish or cause to be furnished to the Trustee

                  (a) semiannually, not later than January 15 and July 15 in
         each year, a list, in such form as the Trustee may reasonably require,
         of the names and addresses of the Holders as of a date not more than 15
         days prior to the delivery thereof; and
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                                                                              57


                  (b) at such other times as the Trustee may request in writing,
         within 30 days after the receipt by the Company of any such request, a
         list of similar form and content as of a date not more than 15 days
         prior to the time such list is furnished;

excluding from any such list names and addresses received by the Trustee in its
capacity as Security Registrar.

                  SECTION 7.02. Preservation of Information; Communications to
Holders. (a) The Trustee shall preserve, in as current a form as is reasonably
practicable, the names and addresses of Holders contained in the most recent
list furnished to the Trustee as provided in Section 7.01 and the names and
addresses of Holders received by the Trustee in its capacity as Security
Registrar. The Trustee may destroy any list furnished to it as provided in
Section 7.01 upon receipt of a new list so furnished.

                  (b) The rights of Holders to communicate with other Holders
with respect to their rights under this Indenture or under the Securities, and
the corresponding rights and duties of the Trustee, shall be as provided by the
Trust Indenture Act.

                  (c) Every Holder of Securities, by receiving and holding the
same, agrees with the Company and the Trustee that neither the Company nor the
Trustee nor any agent of either of them shall be held accountable by reason of
any disclosure of information as to names and addresses of Holders made pursuant
to the Trust Indenture Act.

                  SECTION 7.03. Reports by Trustee. (a) Within 60 days after May
15 of each year, commencing May 15, 1998, the Trustee shall transmit by
first-class mail to Holders such reports concerning the Trustee and its actions
under this Indenture as may be required pursuant to the Trust Indenture Act in
the manner provided pursuant thereto.

                  (b) A copy of each such report shall, at the time of such
transmission to Holders, be filed by the Trustee with each stock exchange upon
which the Securities are listed, with the Commission and with the Company. The
Company will notify the Trustee when the Securities are listed on any stock
exchange.

                  SECTION 7.04. Reports by Company. The Company shall file with
the Trustee and the Commission, and transmit
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                                                                              58


to Holders, such information, documents and other reports, and such summaries
thereof, as may be required pursuant to the Trust Indenture Act at the times and
in the manner provided pursuant to such Act; provided, that any such
information, documents or reports required to be filed with the Commission
pursuant to Section 13 or 15(d) of the Exchange Act shall be filed with the
Trustee within 15 days after the same is so required to be filed with the
Commission.

                  Delivery of such reports, information and documents to the
Trustee is for informational purposes only and the Trustee's receipt of such
shall not constitute constructive notice of any information contained therein
or determinable from information contained therein, including the Company's
compliance with any of its covenants hereunder (as to which the Trustee is
entitled to rely exclusively on Officers' Certificates).

                  SECTION 7.05. Tax Reporting. The Company shall provide to the
Trustee on a timely basis such information as the Trustee requires to enable the
Trustee to prepare and file any form required to be submitted by the Company
with the Internal Revenue Service and the Holders relating to original issue
discount, including, without limitation, Form 1099-0ID or any successor form.


                                  ARTICLE VIII

              Consolidation, Merger, Conveyance, Transfer or Lease

                  SECTION 8.01. Company May Consolidate, Etc., Only on Certain
Terms. The Company shall not consolidate with or merge with or into any other
Person or convey, transfer or lease its properties and assets substantially as
an entirety to any Person, and no Person shall consolidate with or merge with or
into the Company or convey, transfer or lease its properties and assets
substantially as an entirety to the Company, unless:

                  (1) in case the Company shall consolidate with or merge with
         or into another Person or convey, transfer or lease all or
         substantially all of its properties and assets on a consolidated basis
         to any Person, the Person formed by such consolidation or into which
         the Company is merged or the Person which acquires by conveyance,
         transfer or lease, all or substantially all
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                                                                              59


         of the properties and assets of the Company on a consolidated basis
         shall be a corporation, limited liability company, partnership or
         trust, shall be organized and validly existing under the laws of the
         United States of America, any State thereof or the District of Columbia
         and shall expressly assume, by an indenture supplemental hereto,
         executed and delivered to the Trustee, in form reasonably satisfactory
         to the Trustee, the due and punctual payment of the principal of and
         interest (including any Additional Payments) on all the Securities and
         the performance or observance of every covenant of this Indenture on
         the part of the Company to be performed or observed and shall have
         provided for conversion rights in accordance with Article XIII;

                  (2) immediately after giving effect to such transaction and
         treating any indebtedness which becomes an obligation of the Company or
         a Subsidiary as a result of such transaction as having been incurred by
         the Company or such Subsidiary at the time of such transaction, no
         Event of Default, and no event which, after notice or lapse of time or
         both, would become an Event of Default, shall have happened and be
         continuing;

                  (3) if at the time any Preferred Securities are outstanding,
         such consolidation or merger or conveyance, transfer or lease of
         assets of the Company is permitted under, and does not give rise to any
         breach or violation of, the Declaration or the Guarantee; and

                  (4) the Company has delivered to the Trustee an Officers'
         Certificate and an Opinion of Counsel, each stating that such
         consolidation, merger, conveyance, transfer or lease and, if a
         supplemental indenture is required in connection with such transaction,
         such supplemental indenture, comply with this Article and that all
         conditions precedent herein provided for relating to such transaction
         have been complied with.

                  SECTION 8.02. Successor Substituted. Upon any consolidation of
the Company with, or merger of the Company into, any other Person or any
conveyance, transfer or lease of all or substantially all the properties and
assets of the Company on a consolidated basis in accordance with Section 8.01,
the successor Person formed by such consolidation or into which the Company is
merged or to which such conveyance, transfer or lease is made shall succeed to,
and
   70
                                                                              60


be substituted for, and may exercise every right and power of, the Company under
this Indenture with the same effect as if such successor Person had been named
as the Company herein, and thereafter, except in the case of a lease, the
predecessor Person shall be relieved of all obligations and covenants under this
Indenture and the Securities.


                                   ARTICLE IX

                             Supplemental Indentures

                  SECTION 9.01. Supplemental Indentures Without Consent of
Holders. Without the consent of any Holders, the Company, when authorized by a
Board Resolution, and the Trustee, at any time and from time to time, may enter
into one or more indentures supplemental hereto, in form satisfactory to the
Trustee, for any of the following purposes:

                  (1) to evidence the succession of another Person to the
         Company and the assumption by any such successor of the covenants of
         the Company herein and in the Securities; or

                  (2) to add to the covenants of the Company for the benefit of
         the Holders, or to surrender any right or power herein conferred upon
         the Company; or

                  (3) to make provision with respect to the conversion rights
         of Holders pursuant to the requirements of Article XIII; or

                  (4) to cure any ambiguity, to correct or supplement any
         provision herein which may be inconsistent with any other provision
         herein, or to make any other provisions with respect to matters or
         questions arising under this Indenture which shall not be inconsistent
         with the provisions of this Indenture; provided, that such action
         pursuant to this clause (4) shall not adversely affect the interests of
         the Holders of the Securities or, so long as any of the Preferred
         Securities shall remain outstanding, the holders of the Preferred
         Securities;

                  (5) to comply with the requirements of the Commission in order
         to effect or maintain the qualification of this Indenture under the
         Trust Indenture Act; or
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                                                                              61


                  (6) to make provision for transfer procedures, certification,
         book-entry provisions, the form of restricted securities legends, if
         any, to be placed on Securities, and all other matters required
         pursuant to Section 3.06(b) or otherwise necessary, desirable or
         appropriate in connection with the issuance of Securities to holders
         of Preferred Securities in the event of a distribution of Securities by
         the Trust if a Tax Event or Investment Company Event occurs and is
         continuing.

                  SECTION 9.02. Supplemental Indentures with Consent of Holders.
With the consent of the Holders of not less than a majority in principal amount
of the Outstanding Securities, by Act of said Holders delivered to the Company
and the Trustee, the Company, when authorized by a Board Resolution, and the
Trustee may enter into an indenture or indentures supplemental hereto for the
purpose of adding any provisions to or changing in any manner or eliminating any
of the provisions of this Indenture or of modifying in any manner the rights of
the Holders under this Indenture; provided, however, that no such supplemental
indenture shall, without the consent of the Holder of each Outstanding Security
affected thereby,

                  (1) extend the Stated Maturity of the principal of, or any
         installment of interest (including any Additional Payments) on, any
         Security, or reduce the principal amount thereof, or reduce the rate or
         extend the time for payment of interest thereon, or reduce any premium
         payable upon the redemption thereof, or change the place of payment
         where, or the coin or currency in which, any Security or interest
         thereon is payable, or impair the right to institute suit for the
         enforcement of any such payment on or after the Stated Maturity thereof
         (or, in the case of redemption, on or after the Redemption Date), or
         adversely affect the right to convert any Security as provided in
         Article XIII (except as permitted by Section 9.01(3)), or modify the
         provisions of this Indenture with respect to the subordination of the
         Securities in a manner adverse to the Holders,

                  (2) reduce the percentage in principal amount of the
         Outstanding Securities, the consent of whose Holders is required for
         any such supplemental indenture, or the consent of whose Holders is
         required for any waiver of compliance with certain provisions of
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                                                                              62


         this Indenture or certain defaults hereunder and their consequences
         provided for in this Indenture, or

                  (3) modify any of the provisions of this Section or Section
         5.13, except to increase any such percentage or to provide that certain
         other provisions of this Indenture cannot be modified or waived without
         the consent of the Holder of each Outstanding Security affected
         thereby.

                  Notwithstanding anything to the contrary in this Indenture or
the Declaration, if the Property Trustee is the sole holder of the Securities,
so long as any of the Preferred Securities remains outstanding, no amendment
shall be made that adversely affects the holders of such Preferred Securities,
and no termination of this Indenture shall occur, and no waiver of any Event of
Default or compliance with any covenant under this Indenture shall be effective,
without the prior consent of the holders of the percentage of the aggregate
liquidation amount of such Preferred Securities then outstanding which is at
least equal to the percentage of aggregate stated liquidation amount of the
Outstanding Securities as shall be required under this Indenture to effect any
such amendment, termination or waiver.

                  It shall not be necessary for any Act of Holders under this
Section to approve the particular form of any proposed supplemental indenture,
but it shall be sufficient if such Act shall approve the substance thereof.

                  The Company may, but shall not be obligated to, fix a record
date for the purpose of determining the Persons entitled to consent to any
indenture supplemental hereto. If a record date is fixed, the Holders on such
record date, or their duly designated proxies, and only such Persons, shall be
entitled to consent to such supplemental indenture, whether or not such Holders
remain Holders after such record date; provided, that unless such consent shall
have become effective by virtue of the requisite percentage having been obtained
prior to the date which is 90 days after such record date, any such consent
previously given shall automatically and without further action by any Holder
be canceled and of no further effect.

                  SECTION 9.03. Execution of Supplemental Indentures. In
executing or accepting the additional trusts created by any supplemental
indenture permitted by this
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                                                                              63


Article or the modifications thereby of the trusts created by this Indenture,
the Trustee shall be entitled to receive, and (subject to Section 6.01) shall be
fully protected in relying upon, an Opinion of Counsel stating that the
execution of such supplemental indenture is authorized or permitted by this
Indenture. The Trustee may, but shall not be obligated to, enter into any such
supplemental indenture which affects the Trustee's own rights, duties or
immunities under this Indenture or otherwise.

                  SECTION 9.04. Effect of Supplemental Indentures. Upon the
execution of any supplemental indenture under this Article, this Indenture shall
be modified in accordance therewith, and such supplemental indenture shall form
a part of this Indenture for all purposes; and every Holder of Securities
theretofore or thereafter authenticated and delivered hereunder shall be bound
thereby. No such supplemental indenture shall directly or indirectly modify the
provisions of Article XII in any manner which might terminate or impair the
rights of the Senior Debt pursuant to such subordination provisions.

                  SECTION 9.05. Conformity with Trust Indenture Act. Every
supplemental indenture executed pursuant to this Article shall conform to the
requirements of the Trust Indenture Act.

                  SECTION 9.06. Reference in Securities to Supplemental
Indentures. Securities authenticated and delivered after the execution of any
supplemental indenture pursuant to this Article may, and shall if required by
the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental indenture. If the Company shall so determine,
new Securities so modified as to conform, in the opinion of the Trustee and the
Company, to any such supplemental indenture, may be prepared and executed by the
Company and authenticated and delivered by the Trustee in exchange for
Outstanding Securities.


                                    ARTICLE X

                    Covenants; Representations and Warranties

                  SECTION 10.01. Payment of Principal and Interest. The Company
will duly and punctually pay the principal of
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and interest on the Securities in accordance with the terms of the Securities
and this Indenture.

                  SECTION 10.02. Maintenance of Office or Agency. The Company
will maintain in the United States an office or agency where Securities may be
presented or surrendered for payment, where Securities may be surrendered for
registration of transfer, exchange or conversion, and where notices and demands
to or upon the Company in respect of the Securities and this Indenture may be
served. The Company will give prompt written notice to the Trustee of the
location, and any change in the location, of such office or agency. If at any
time the Company shall fail to maintain any such required office or agency or
shall fail to furnish the Trustee with the address thereof, such presentations,
surrenders, notices and demands may be made or served at the Corporate Trust
Office of the Trustee, and the Company hereby appoints the Trustee as its agent
to receive all such presentations, surrenders, notices and demands.

                  The Company may also from time to time designate one or more
other offices or agencies (in the United States) where the Securities may be
presented or surrendered for any or all such purposes and may from time to time
rescind such designations; provided, however, that no such designation or
rescission shall in any manner relieve the Company of its obligation to maintain
an office or agency in the United States for such purposes. The Company will
give prompt written notice to the Trustee of any such designation or rescission
and of any change in the location of any such other office or agency.

                  SECTION 10.03. Money for Security Payments to Be Held in
Trust. If the Company shall at any time act as its own Paying Agent, it will, on
or before each due date of the principal of or interest on any of the
Securities, segregate and hold in trust for the benefit of the Persons entitled
thereto a sum sufficient to pay the principal or interest so becoming due until
such sums shall be paid to such Persons or otherwise disposed of as herein
provided and will promptly notify the Trustee of its action or failure so to
act.

                  Whenever the Company shall have one or more Paying Agents, it
will, prior to each due date of the principal of or interest on any Securities,
deposit with a Paying Agent a sum sufficient to pay the principal or interest so
becoming due, such sum to be held as provided by the Trust Indenture
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                                                                              65


Act, and (unless such Paying Agent is the Trustee) the Company will promptly
notify the Trustee of its action or failure so to act.

                  The Company will cause each Paying Agent other than the
Trustee to execute and deliver to the Trustee an instrument in which such Paying
Agent shall agree with the Trustee, subject to the provisions of this Section,
that such Paying Agent will (i) comply with the provisions of the Trust
Indenture Act applicable to it as a Paying Agent and (ii) during the continuance
of any default by the Company (or any other obligor upon the Securities) in the
making of any payment in respect of the Securities, upon the written request of
the Trustee, forthwith pay to the Trustee all sums held in trust by such Paying
Agent as such.

                  The Company may at any time, for the purpose of obtaining the
satisfaction and discharge of this Indenture or for any other purpose, pay, or
by Company Order direct any Paying Agent to pay, to the Trustee all sums held in
trust by the Company or such Paying Agent, such sums to be held by the Trustee
upon the same trusts as those upon which such sums were held by the Company or
such Paying Agent; and, upon such payment by any Paying Agent to the Trustee,
such Paying Agent shall be released from all further liability with respect to
such money.

                  Any money deposited with the Trustee or any Paying Agent, or
then held by the Company, in trust for the payment of the principal of or
interest on any Security and remaining unclaimed for two years after such
principal or interest has become due and payable, shall be paid to the Company
on Company Request, or (if then held by the Company) shall be discharged from
such trust; and the Holder of any such Security shall thereafter, as an
unsecured general creditor, look only to the Company for payment thereof, and
all liability of the Trustee or such Paying Agent with respect to such trust
money, and all liability of the Company as trustee thereof, shall thereupon
cease.

                  SECTION 10.04. Statement by Officers as to Default. The
Company will deliver to the Trustee, within 120 days after the end of each
fiscal year of the Company ending after the date hereof, an Officers'
Certificate, stating whether or not to the best knowledge of the signers thereof
the Company is in default in the performance and observance of any of the
material terms, provisions and conditions of this Indenture (without regard to
any period
   76
                                                                              66


of grace or requirement of notice provided hereunder) and, if the Company shall
be in default, specifying all such defaults and the nature and status thereof of
which they may have knowledge.

                  SECTION 10.05. Limitation on Dividends; Transactions with
Affiliates; Covenants as to the Trust. (a) If at such time (x) there shall have
occurred an Event of Default, (y) the Company shall be in default with respect
to its payment of any obligations under the Guarantee or (z) the Company shall
have given notice of its election to begin a Deferral Period as provided herein
and shall not have rescinded such notice, or such Deferral Period shall be
continuing, the Company covenants that the Company shall not (i) declare or pay
any dividends or distributions on, or redeem, purchase, acquire or make a
liquidation payment with respect to, any of the Company's capital stock (which
includes common and preferred stock) other than stock dividends which consist of
stock of the same class as that on which the dividends are being paid, (ii) make
any payment of principal, interest or premium, if any, on or repay or repurchase
or redeem any debt securities of the Company that rank pari passu with or junior
in interest to the Securities or (iii) make any guarantee payments with respect
to any guarantee by the Company of the debt securities of any subsidiary of the
Company if such guarantee ranks pari passu with or junior in interest to the
Securities (in each case, other than (A) dividends or distributions in Common
Stock, (B) any declaration of a dividend in connection with the implementation
of a stockholders' rights plan, or the issuance of stock under any such plan in
the future, or the redemption or repurchase of any such rights pursuant thereto,
(C) payments under the Guarantee, (D) purchases or acquisitions of shares of the
Common Stock in connection with the satisfaction by the Company of its
obligations under any employee benefit plan or any other contractual obligation
of the Company (other than a contractual obligation ranking pari passu with or
junior in interest to the Securities), (E) as a result of a reclassification of
the Company's capital stock or the exchange or conversion of one class or series
of the Company's capital stock for another class or series of the Company's
capital stock or (F) the purchase of fractional interests in shares of the
Company's capital stock pursuant to the conversion or exchange provisions of
such capital stock or the security being converted or exchanged).
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                                                                              67


                  (b) The Company also covenants and agrees (i) that it shall
directly or indirectly maintain 100% ownership of the Common Securities of the
Trust; provided, however, that any permitted successor of the Company hereunder
may succeed to the Company's ownership of such Common Securities and (ii) that
it shall use its reasonable efforts, consistent with the terms and provisions of
the Declaration, to cause the Trust (x) to remain a statutory business trust,
except in connection with the distribution of the Securities to the holders of
Trust Securities in liquidation of the Trust, the redemption of all of the Trust
Securities of the Trust, or certain mergers, consolidations or amalgamations,
each as permitted by the Declaration, and (y) to otherwise continue to be
classified as a grantor trust for United States Federal income tax purposes.

                  SECTION 10.06. Payment of Expenses of the Trust. In connection
with the offering, sale and issuance of the Securities to the Property Trustee
in connection with the sale of the Trust Securities by the Trust, the Company
shall:

                  (a) pay for all costs, fees and expenses relating to the
         offering, sale and issuance of the Securities, including commissions to
         the Initial Purchasers payable pursuant to the Purchase Agreement and
         compensation of the Trustee under the Indenture in accordance with the
         provisions of Section 6.07 of the Indenture;

                  (b) be responsible for and pay for all debts and obligations
         (other than with respect to the Trust Securities) of the Trust, pay for
         all costs and expenses of the Trust (including, but not limited to,
         costs and expenses relating to the organization of the Trust, the
         offering, sale and issuance of the Trust Securities (including
         commissions to the underwriters in connection therewith), the fees and
         expenses of the Property Trustee and the Delaware Trustee, the costs
         and expenses relating to the operation of the Trust, including without
         limitation, costs and expenses of accountants, attorneys, statistical
         or bookkeeping services, expenses for printing and engraving and
         computing or accounting equipment, paying agent(s), registrar(s),
         transfer agent(s), duplicating, travel and telephone and other
         telecommunications expenses and costs and expenses incurred in
         connection with the acquisition, financing, and disposition of Trust
         assets); and
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                                                                              68


                  (c) pay any and all taxes (other than United States
         withholding taxes attributable to the Trust or its assets) and all
         liabilities, costs and expenses with respect to such taxes of the
         Trust.

                  SECTION 10.07. Registration Rights. The holders of the
Preferred Securities, the Securities, the Guarantee Agreement and the shares of
Common Stock of the Company issuable upon conversion of the Securities
(collectively, the "Registrable Securities") are entitled to the benefits of a
Registration Rights Agreement, dated as of April 1, 1998, among the Company, the
Trust and the Initial Purchasers (the "Registration Rights Agreement").
Pursuant to the Registration Rights Agreement the Company and the Trust have
agreed for the benefit of the holders of the Registrable Securities that (i)
they will, at the Company's sole expense, prior to May 1, 1998, file a shelf
registration statement (the "Shelf Registration Statement") with the Commission
with respect to resales of the Registrable Securities, (ii) they will use their
best efforts to cause such Shelf Registration Statement to be declared effective
under the Securities Act prior to July 30, 1998 and (iii) they will use their
best efforts to maintain such Shelf Registration Statement continuously
effective under the Securities Act (subject to certain exceptions under the
Registration Rights Agreement) until the second anniversary of the effectiveness
of the Shelf Registration Statement or such other period as shall be required
under Rule 144(k) thereunder or any successor rule or regulation thereto or such
earlier date as is provided in the Registration Rights Agreement. If the Company
fails to comply with either of clauses (ii) or (iii) above, subject to certain
exceptions provided in the Registration Rights Agreement, (a "Registration
Default") then, at such time, the Applicable Rate will increase by 50 basis
points (.50%). Such increase will remain in effect from and including the date
on which any such Registration Default shall occur to but excluding the date on
which all Registration Defaults have been cured, on which date the interest rate
on the Securities will revert to the interest rate originally borne by the
Securities.


                                   ARTICLE XI

                            Redemption of Securities

                  SECTION 11.01. Optional Redemption. The Company shall have the
right to redeem the Securities (an "Optional
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                                                                              69


Redemption") in whole or in part, at any time or from time to time on or after
April 10, 2001, at a Redemption Price equal to $51.56 per $50 principal amount
of the Securities to be redeemed plus any accrued and unpaid interest, including
Additional Payments, if any, to the Redemption Date, if redeemed on or before
April 1, 2002, and at the prices per $50 principal amount of Securities set
forth in the following table, plus accrued and unpaid interest, including
Additional Payments, if any, to the Redemption Date, if redeemed during the
12-month period ending on April 1:




                              Price Per $50
                                Principal
       Year                      Amount
       ----                      ------
                           
       2003                      $51.04
       2004                      $50.52


and thereafter at $50 per $50 principal amount of the Securities plus, in each
case, any accrued and unpaid interest, including Additional Payments, if any, to
the Redemption Date.

                  SECTION 11.02. Tax Event Redemption. (a) If a Tax Event has
occurred and is continuing and:

                  (1) the Company has received a Redemption Tax Opinion; or

                  (2) the Issuer Trustees shall have been informed by nationally
         recognized independent tax counsel (reasonably acceptable to the Issuer
         Trustees) experienced in such matters that a No Recognition Opinion
         cannot be delivered,

then the Company shall have the right upon not less than 20 days, nor more than
60 days, notice to the Holders of the Securities to redeem the Securities in
whole, but not in part, for cash at $50 per $50 principal amount of the
Securities plus accrued and unpaid interest, including Additional Payments, if
any, to the Redemption Date, within 90 days following the occurrence of such Tax
Event (the "90 Day Period"); provided, however, that if, at the time there is
available to the Company or the Trust the opportunity to eliminate, within the
90 Day Period, the Tax Event by taking some ministerial action, including, but
not
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limited to, filing a form or making an election, or pursuing some other
similar reasonable measure which, in the sole judgment of the Company, will have
no adverse effect on the Company, the Trust or the Holders of the Preferred
Securities and will involve no material cost, then the Company or the Trust
shall pursue such ministerial action or other measure in lieu of redemption; and
provided further that the Company shall have no right to redeem the Securities
while the Trust is pursuing any ministerial action or other similar measure
pursuant to its obligations under the Declaration.

                  (b) If the Company opts not to redeem the Securities pursuant
to this Section 11.02, the Company shall be required to pay Additional Sums in
respect of the Securities pursuant to Section 3.01 for so long as (i) a Tax
Event has occurred and is continuing and (ii) the Property Trustee is the sole
Holder of the Securities.

                  SECTION 11.03.  [Reserved]

                  SECTION 11.04. Selection by Trustee of Securities to Be
Redeemed. If less than all the Securities are to be redeemed (unless such
redemption affects only a single Security), the particular Securities to be
redeemed shall be selected not more than 60 days prior to the Redemption Date by
the Trustee by such method as the Trustee shall deem fair and appropriate, from
the Outstanding Securities not previously called for redemption. Such selection
method may provide for the selection for redemption of portions (equal to $50 or
any integral multiple thereof) of the principal amount of the Securities.

                  The Trustee shall promptly notify the Company in writing of
the Securities selected for redemption as aforesaid and, in case of any
Securities selected for partial redemption as aforesaid, the principal amount
thereof to be redeemed.

                  The provisions of the two preceding paragraphs shall not apply
with respect to any redemption affecting only a single Security, whether such
Security is to be redeemed in whole or in part. In the case of any such
redemption in part, the unredeemed portion of the principal amount of the
Security shall be in an authorized denomination (which shall not be less than
the minimum authorized denomination) for such Security.
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                  For all purposes of this Indenture, unless the context
otherwise requires, all provisions relating to the redemption of Securities
shall relate, in the case of any Securities redeemed or to be redeemed only in
part, to the portion of the principal amount of such Securities which has been
or is to be redeemed.

                  SECTION 11.05. Notice of Redemption. Notice of redemption
shall be given by first-class mail, postage prepaid, mailed not less than 30
(or, in the case of a redemption pursuant to Section 11.02 hereof, 20) nor more
than 60 days prior to the Redemption Date, to each Holder of Securities to be
redeemed, at such Holder's address appearing in the Security Register.

                  All notices of redemption given pursuant to this Article XI
shall identify the Securities to be redeemed (including, if relevant, CUSIP or
ISIN number) and shall state:

                  (1) the Redemption Date,

                  (2) the Redemption Price,

                  (3) that on the Redemption Date the Redemption Price will
         become due and payable upon each such Security to be redeemed and that
         interest thereon will cease to accrue on and after said date,

                  (4) the place or places where such Securities are to be
         surrendered for payment of the Redemption Price, and

                  (5) the date on which the right to convert the Securities to
         be redeemed will terminate and the places where such Securities may be
         surrendered for conversion.

                  Notice of redemption of Securities to be redeemed at the
election of the Company shall be given by the Company or, at the Company's
request, by the Trustee in the name and at the expense of the Company.

                  SECTION 11.06. Deposit of Redemption Price. Prior to 12:00
noon on any Redemption Date, the Company shall deposit with the Trustee or with
a Paying Agent (or, if the Company is acting as its own Paying Agent, segregate
and hold in trust as provided in Section 10.03) an amount of
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money sufficient to pay the Redemption Price of, and (except if the Redemption
Date shall be an Interest Payment Date) accrued interest on, all the Securities
which are to be redeemed on that date.

                  If any Security called for redemption is converted, any money
deposited with the Trustee or with any Paying Agent or so segregated and held in
trust for the redemption of such Security shall (subject to any right of the
Holder of such Security or any Predecessor Security to receive interest as
provided in the last paragraph of Section 3.08) be paid to the Company upon
Company Request or, if then held by the Company, shall be discharged from such
trust.

                  SECTION 11.07. Securities Payable on Redemption Date. Notice
of redemption having been given as aforesaid, the Securities so to be redeemed
shall, on the Redemption Date, become due and payable at the Redemption Price
therein specified, and from and after such date (unless the Company shall
default in the payment of the Redemption Price and accrued interest) such
Securities shall cease to bear interest. Upon surrender of any such Security for
redemption in accordance with said notice, such Security shall be paid by the
Company at the Redemption Price; provided, however, that installments of
interest whose Stated Maturity is on or prior to the Redemption Date shall be
payable to the Holders of such Securities, or one or more Predecessor
Securities, registered as such at the close of business on the relevant Record
Dates according to the terms and the provisions of Section 3.08.

                  If any Security called for redemption shall not be so paid
upon surrender thereof for redemption, the principal shall, until paid, bear
interest from the Redemption Date at the rate borne by the Security.

                  SECTION 11.08. Securities Redeemed in Part. (a) In the event
of any redemption in part, the Company shall not be required (i) to issue,
register the transfer of or exchange any Security during a period beginning at
the opening of business 15 days before the date of the mailing of a notice of
redemption of Securities selected for redemption and ending at the close of
business on the day of such mailing and (ii) to register the transfer of or
exchange any Securities so selected for redemption, in whole or in part, except
for the unredeemed portion of any Securities being redeemed in part.
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                  (b) If a partial redemption of the Securities would result in
the delisting of the Preferred Securities issued by the Trust from any national
securities exchange or other organization on which the Preferred Securities are
listed, the Company shall not be permitted to effect such partial redemption and
may only redeem the Securities in whole.

                  (c) Any Security which is to be redeemed only in part shall be
surrendered at a place of payment therefor (with, if the Company or the Trustee
so requires, due endorsement by, or a written instrument of transfer in form
satisfactory to the Company and the Trustee duly executed by, the Holder thereof
or his attorney duly authorized in writing), and the Company shall execute, and
the Trustee shall authenticate and make available for delivery to the Holder of
such Security without service charge, a new Security or Securities, of any
authorized denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the unredeemed portion of the principal of
the Security so surrendered. If a Global Security is surrendered, such new
Security will (subject to Section 3.06) also be a new Global Security.


                                   ARTICLE XII

                           Subordination of Securities

                  SECTION 12.01. Agreement to Subordinate. The Company covenants
and agrees, and each Holder of Securities by such Holder's acceptance thereof
likewise covenants and agrees, that all Securities shall be issued subject to
the provisions of this Article XII; and each Holder of a Security, whether upon
original issue or upon transfer or assignment thereof, accepts and agrees to be
bound by such provisions. The payment by the Company of the principal of,
premium, if any, and interest (including Additional Payments) on all Securities
issued hereunder shall, to the extent and in the manner hereinafter set forth,
be subordinated and junior in right of payment to the prior payment in full of
all Senior Debt, whether outstanding at the date of this Indenture or thereafter
incurred; provided, however, that no provision of this Article XII shall prevent
the occurrence of any default or Event of Default hereunder.

                  SECTION 12.02. Default on Senior Debt. In the event and during
the continuation of any default by the
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Company in the payment of principal, premium, interest or any other payment due
on any Senior Debt continuing beyond the period of grace, if any, specified in
the instrument evidencing such Senior Debt, unless and until such default shall
have been cured or waived or shall have ceased to exist, and in the event that
the maturity of any Senior Debt has been accelerated because of a default, then
no payment shall be made by the Company with respect to the principal of
(including redemption payments), premium, if any, or interest on the Securities.

                  In the event that, notwithstanding the foregoing, any payment
shall be received by the Trustee when such payment is prohibited by the
preceding paragraph of this Section 12.02, such payment shall be held in trust
for the benefit of, and shall be paid over or delivered to, the holders of
Senior Debt or their respective representatives, or to the trustee or trustees
under any indenture pursuant to which any of such Senior Debt may have been
issued, as their respective interests may appear, but only to the extent that
the holders of the Senior Debt (or their representative or representatives or a
trustee) notify the Trustee in writing within 90 days of such payment of the
amounts then due and owing on the Senior Debt and only the amounts specified in
such notice to the Trustee shall be paid to the holders of Senior Debt.

                  SECTION 12.03. Liquidation; Dissolution; Bankruptcy. Upon any
payment by the Company or distribution of assets of the Company of any kind or
character, whether in cash, property or securities, to creditors upon any
dissolution or winding up or liquidation or reorganization of the Company,
whether voluntary or involuntary, or in bankruptcy, insolvency, receivership or
other proceedings, all amounts (including principal, premium, if any, and
interest) due or to become due upon all Senior Debt shall first be paid in full,
or payment thereof provided for in money in accordance with its terms, before
any payment is made on account of the principal (and premium, if any) or
interest on the Securities; and upon any such dissolution or winding up or
liquidation or reorganization, any payment by the Company, or distribution of
assets of the Company of any kind or character, whether in cash, property or
securities, to which the Holders of the Securities or the Trustee would be
entitled, except for the provisions of this Article XII, shall be paid by the
Company or by any receiver, trustee in bankruptcy, liquidating trustee, agent or
other Person making such payment or distribution, or by the Holders of the
Securities
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                                                                              75

or by the Trustee under this Indenture if received by them or it, directly to
the holders of Senior Debt (pro rata to such holders on the basis of the
respective amounts of Senior Debt held by such holders, as calculated by the
Company) or their representative or representatives, or to the trustee or
trustees under any indenture pursuant to which any instruments evidencing such
Senior Debt may have been issued, as their respective interests may appear, to
the extent necessary to pay such Senior Debt in full, in money or money's worth,
after giving effect to any concurrent payment or distribution to or for the
holders of such Senior Debt, before any payment or distribution is made to the
Holders of Securities or to the Trustee.

                  In the event that, notwithstanding the foregoing, any payment
or distribution of assets of the Company of any kind or character, whether in
cash, property or securities, prohibited by the foregoing shall be received by
the Trustee or the Holders of the Securities before all Senior Debt is paid in
full, or provision is made for such payment in money in accordance with its
terms, such payment or distribution shall be held in trust for the benefit of
and shall be paid over or delivered to the holders of Senior Debt or their
representative or representatives, or to the trustee or trustees under any
indenture pursuant to which any instruments evidencing such Senior Debt may have
been issued, and their respective interests may appear, as calculated by the
Company, for application to the payment of all Senior Debt remaining unpaid to
the extent necessary to pay such Senior Debt in full in money in accordance with
its terms, after giving effect to any concurrent payment or distribution to or
for the holders of such Senior Debt.

                  For purposes of this Article XII, the words, "cash, property
or securities" shall not be deemed to include shares of stock of the Company as
reorganized or readjusted, or securities of the Company or any other corporation
provided for by a plan of reorganization or readjustment, the payment of
which is subordinated at least to the extent provided in this Article XII with
respect to the Securities to the payment of all Senior Debt which may at the
time be outstanding; provided that (i) such Senior Debt is assumed by the new
corporation, if any, resulting from any such reorganization or readjustment, and
(ii) the rights of the holders of such Senior Debt are not, without the consent
of such holders, altered by such reorganization or readjustment. The
consolidation of the Company with, or the merger of the Company with or into,
another Person or the
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                                                                              76


liquidation or dissolution of the Company following the conveyance, transfer or
lease of all or substantially all its properties and assets on a consolidated
basis to another Person upon the terms and conditions provided for in Article
VIII hereof shall not be deemed a dissolution, winding up, liquidation or
reorganization for the purposes of this Section 12.03 if such other Person
shall, as a part of such consolidation, merger, conveyance, transfer or lease,
comply with the conditions stated in Article VIII hereof. Nothing in Section
12.02 or in this Section 12.03 shall apply to claims of, or payments to, the
Trustee under or pursuant to Section 6.07 hereof.

                  SECTION 12.04. Subrogation. Subject to the payment in full of
all Senior Debt, the rights of the Holders of the Securities shall be subrogated
to the rights of the holders of such Senior Debt to receive payments or
distributions of cash, property or securities of the Company, as the case may
be, applicable to such Senior Debt until the principal of (and premium, if any)
and interest on the Securities shall be paid in full; and, for the purposes of
such subrogation, no payments or distributions to the holders of such Senior
Debt of any cash, property or securities to which the Holders of the Securities
or the Trustee would be entitled except for the provisions of this Article XII,
and no payment pursuant to the provisions of this Article XII, to or for the
benefit of the holders of such Senior Debt by Holders of the Securities or the
Trustee, shall, as between the Company, its creditors other than holders of
Senior Debt, and the Holders of the Securities, be deemed to be a payment by the
Company to or on account of such Senior Debt. It is understood that the
provisions of this Article XII are and are intended solely for the purposes of
defining the relative rights of the Holders of the Securities, on the one hand,
and the holders of such Senior Debt on the other hand.

                  Nothing contained in this Article XII or elsewhere in this
Indenture or in the Securities is intended to or shall impair, as between the
Company, its creditors other than the holders of Senior Debt, and the Holders of
the Securities, the obligation of the Company, which is absolute and
unconditional, to pay to the Holders of the Securities the principal of (and
premium, if any) and interest on the Securities as and when the same shall
become due and payable in accordance with their terms, or is intended to or
shall affect the relative rights of the Holders of the Securities and creditors
of the Company, as the case may be, other than
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the holders of Senior Debt, nor shall anything herein or therein prevent the
Trustee or the Holder of any Security from exercising all remedies otherwise
permitted by applicable law upon default under this Indenture, subject to the
rights, if any, under this Article XII of the holders of such Senior Debt in
respect of cash, property or securities of the Company, as the case may be,
received upon the exercise of any such remedy.

                  Upon any payment or distribution of assets of the Company
referred to in this Article XII, the Trustee, subject to the provisions of
Section 6.03, and the Holders of the Securities shall be entitled to rely upon
any order or decree made by any court of competent jurisdiction in which such
dissolution, winding up, liquidation or reorganization proceedings are pending,
or a certificate of the receiver, trustee in bankruptcy, liquidation trustee,
agent or other Person making such payment or distribution, delivered to the
Trustee or to the Holders of the Securities, for the purposes of ascertaining
the Persons entitled to participate in such distribution, the holders of the
Senior Debt and other indebtedness of the Company, as the case may be, the
amount thereof or payable thereon, the amount or amounts paid or distributed
thereon and all other facts pertinent thereto or to this Article XII.

                  SECTION 12.05. Trustee to Effectuate Subordination. Each
Holder of Securities by such Holder's acceptance thereof authorizes and directs
the Trustee on such Holder's behalf to take such action as may be necessary or
appropriate to effectuate the subordination provided in this Article XII and
appoints the Trustee as such Holder's attorney-in-fact for any and all such
purposes.

                  SECTION 12.06. Notice by the Company. The Company shall give
prompt written notice to a Responsible Officer of the Trustee of any fact known
to the Company which would prohibit the making of any payment of monies to or by
the Trustee in respect of the Securities pursuant to the provisions of this
Article XII. Notwithstanding the provisions of this Article XII or any other
provision of this Indenture, the Trustee shall not be charged with knowledge of
the existence of any facts which would prohibit the making of any payment of
monies to or by the Trustee in respect of the Securities pursuant to the
provisions of this Article XII unless and until a Responsible Officer of the
Trustee shall have received written notice thereof at the Corporate Trust Office
of the Trustee from the Company or a
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holder or holders of Senior Debt or from any trustee therefor; and before the
receipt of any such written notice, the Trustee, subject to the provisions of
Section 6.03 hereof, shall be entitled in all respects to assume that no such
facts exist; provided, however, that if the Trustee shall not have received the
notice provided for in this Section 12.06 at least two Business Days prior to
the date upon which by the terms hereof any money may become payable for any
purpose (including, without limitation, the payment of the principal of (and
premium, if any) or interest on any Security), then, anything herein contained
to the contrary notwithstanding, the Trustee shall have full power and authority
to receive such money and to apply the same to the purposes for which it was
received, and shall not be affected by any notice to the contrary which may be
received by it within two Business Days prior to such date.

                  The Trustee, subject to the provisions of Section 6.03, shall
be entitled to rely on the delivery to it of a written notice by a Person
representing himself to be a holder of Senior Debt (or a trustee on behalf of
such holder) to establish that such notice has been given by a holder of such
Senior Debt or a trustee on behalf of any such holder or holders. In the event
that the Trustee determines in good faith that further evidence is required with
respect to the right of any Person as a holder of Senior Debt to participate in
any payment or distribution pursuant to this Article XII, the Trustee may
request such Person to furnish evidence to the reasonable satisfaction of the
Trustee as to the amount of Senior Debt held by such Person, the extent to which
such Person is entitled to participate in such payment or distribution and any
other facts pertinent to the right of such Person under this Article XII, and,
if such evidence is not furnished, the Trustee may defer any payment to such
Person pending judicial determination as to the right of such Person to receive
such payment.

                  SECTION 12.07. Rights of the Trustee; Holders of Senior Debt.
The Trustee in its individual capacity shall be entitled to all the rights set
forth in this Article XII in respect of any Senior Debt at any time held by it,
to the same extent as any other holder of Senior Debt, and nothing in this
Indenture shall deprive the Trustee of any of its rights as such holder.

                  With respect to the holders of Senior Debt of the Company, the
Trustee undertakes to perform or to observe
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only such of its covenants and obligations as are set forth in this Article XII,
and no implied covenants or obligations with respect to the holders of such
Senior Debt shall be read into this Indenture against the Trustee. The Trustee
shall not be deemed to owe any fiduciary duty to the holders of such Senior Debt
and, subject to the provisions of Section 6.03, the Trustee shall not be liable
to any holder of such Senior Debt if it shall pay over or deliver to Holders of
Securities, the Company or any other Person money or assets to which any holder
of such Senior Debt shall be entitled by virtue of this Article XII or
otherwise.

                  SECTION 12.08. Subordination May Not Be Impaired. No right of
any present or future holder of any Senior Debt to enforce subordination as
herein provided shall at any time in any way be prejudiced or impaired by any
act or failure to act on the part of the Company or by any act or failure to
act, in good faith, by any such holder, or by any noncompliance by the Company
with the terms, provisions and covenants of this Indenture, regardless of any
knowledge thereof which any such holder may have or otherwise be charged with.

                  Without in any way limiting the generality of the foregoing
paragraph, the holders of Senior Debt may, at any time and from time to time,
without the consent of or notice to the Trustee or the Holders of the
Securities, without incurring responsibility to the holders of the Securities
and without impairing or releasing the subordination provided in this Article
XII or the obligations hereunder of the Holders of the Securities to the holders
of Senior Debt, do any one or more of the following: (i) change the manner,
place or terms of payment or extend the time of payment of, or renew or alter,
such Senior Debt, or otherwise amend or supplement in any manner such Senior
Debt or any instrument evidencing the same or any agreement under which such
Senior Debt is outstanding; (ii) sell, exchange, release or otherwise deal with
any property pledged, mortgaged or otherwise securing such Senior Debt; (iii)
release any Person liable in any manner for the collection of such Senior Debt;
and (iv) exercise or refrain from exercising any rights against the Company and
any other Person.
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                                  ARTICLE XIII

                            Conversion of Securities

                  SECTION 13.01. Conversion Rights. Subject to and upon
compliance with the provisions of this Article, the Securities are convertible,
at the option of the Holder, at any time prior to 5:00 p.m. New York City time
on April 1, 2028 into fully paid and nonassessable shares of Common Stock of the
Company at an initial conversion rate of 0.7257 shares of Common Stock for each
$50 in aggregate principal amount of Securities (the "Initial Conversion Ratio")
(equal to a conversion price of $68.90 principal amount of Securities per share
of Common Stock (the "Initial Conversion Price")). The conversion ratio and the
equivalent conversion price in effect at any given time are known as the
"Applicable Conversion Ratio" and the "Applicable Conversion Price",
respectively, and are subject to adjustment as described in this Article XIII. A
Holder of Securities may convert any portion of the principal amount of the
Securities into that number of fully paid and nonassessable shares of Common
Stock (calculated as to each conversion to the nearest 1/100th of a share)
obtained by dividing the principal amount of the Securities to be converted by
the Applicable Conversion Ratio. In case a Security or portion thereof is called
for redemption, such conversion right in respect of the Security or portion so
called shall expire at the close of the Business Day immediately preceding the
corresponding Redemption Date, unless the Company defaults in making the payment
due upon redemption.

                  SECTION 13.02. Conversion Procedures. (a) In order to convert
all or a portion of the Securities, the Holder thereof shall deliver to the
Conversion Agent an irrevocable Notice of Conversion setting forth the principal
amount of Securities to be converted, together with the name or names, if other
than the Holder, in which the shares of Common Stock should be issued upon
conversion and, if such Securities are definitive Securities, surrender to the
Conversion Agent the Securities to be converted, duly endorsed or assigned to
the Company or in blank. In addition, a holder of Preferred Securities may
exercise its right under the Declaration to convert such Preferred Securities
into Common Stock by delivering to the Conversion Agent an irrevocable Notice of
Conversion setting forth the information called for by the preceding sentence
and directing the Conversion Agent (i) to exchange such Preferred 
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Security for a portion of the Securities held by the Trust (at an exchange rate
of $50 principal amount of Securities for each Preferred Security) and (ii) to
immediately convert such Securities, on behalf of such holder, into Common Stock
of the Company pursuant to this Article XIII and, if such Preferred Securities
are in definitive form, surrendering such Preferred Securities, duly endorsed or
assigned to the Company or in blank. So long as any Preferred Securities are
outstanding, the Trust shall not convert any Securities except pursuant to a
Notice of Conversion duly executed and delivered to the Conversion Agent by a
holder of Preferred Securities.

                  If a Notice of Conversion is delivered on or after the Regular
Record Date and prior to the subsequent Interest Payment Date, the Holder will
be entitled to receive the interest payable on the subsequent Interest Payment
Date on the portion of Securities to be converted notwithstanding the conversion
thereof prior to such Interest Payment Date. Except as otherwise provided in the
immediately preceding sentence, in the case of any Security which is converted,
interest whose Stated Maturity is after the date of conversion of such Security
shall not be payable, and the Company shall not make nor be required to make any
other payment, adjustment or allowance with respect to accrued but unpaid
interest on the Securities being converted, which shall be deemed to be paid in
full. Each conversion shall be deemed to have been effected immediately prior to
the close of business on the day on which the Notice of Conversion was received
(the "Conversion Date") by the Conversion Agent from the Holder or from a holder
of the Preferred Securities effecting a conversion thereof pursuant to its
conversion rights under the Declaration, as the case may be. The Person or
Persons entitled to receive the Common Stock issuable upon such conversion shall
be treated for all purposes as the record holder or holders of such Common Stock
as of the Conversion Date. As promptly as practicable on or after the Conversion
Date, the Company shall issue and deliver at the office of the Conversion Agent,
unless otherwise directed by the Holder in the Notice of Conversion, a
certificate or certificates for the number of full shares of Common Stock
issuable upon such conversion, together with the cash payment, if any, in lieu
of any fraction of any share to the Person or Persons entitled to receive the
same. The Conversion Agent shall deliver such certificate or certificates to
such Person or Persons.
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                  (b) Subject to any right of the Holder of such Security or any
Predecessor Security to receive interest as provided in the last paragraph of
Section 3.08 and the second paragraph of clause (a) of Section 13.02, the
Company's delivery upon conversion of the whole number of shares of Common Stock
into which the Securities are convertible (together with the cash payment, if
any, in lieu of fractional shares) shall be deemed to satisfy the Company's
obligation to pay the principal amount at Maturity of the portion of Securities
so converted and any unpaid interest (including Compounded Interest and
Additional Sums) accrued on such Securities at the time of such conversion.

                  (c) No fractional shares of Common Stock will be issued as a
result of conversion, but in lieu thereof, the Company shall pay to the
Conversion Agent a cash adjustment in an amount equal to the same fraction of
the Closing Price of such fractional interest on the date on which the
Securities or Preferred Securities, as the case may be, were duly surrendered to
the Conversion Agent for conversion, or, if such day is not a Trading Day, on
the next Trading Day, and the Conversion Agent in turn will make such payment,
if any, to the Holder of the Securities or the holder of the Preferred
Securities so converted.

                  (d) In the event of the conversion of any Security in part
only, a new Security or Securities for the unconverted portion thereof will be
issued in the name of the Holder thereof upon the cancelation thereof in
accordance with Section 3.06.

                  (e) In effecting the conversion transactions described in this
Section, the Conversion Agent is acting as agent of the holders of Preferred
Securities (in the exchange of Preferred Securities for Securities) and as
agent of the Holders of Securities (in the conversion of Securities into Common
Stock), as the case may be, directing it to effect such conversion transactions.
The Conversion Agent is hereby authorized (x) if the Trust exists, (i) to
exchange Securities held by or on behalf of the Trust from time to time for
Preferred Securities in connection with the conversion of such Preferred
Securities in accordance with this Article XIII and (ii) to convert all or a
portion of the Securities into Common Stock and thereupon to deliver such shares
of Common Stock in accordance with the provisions of this Article XIII and to
deliver to the Trust a new Security or Securities for any resulting unconverted
principal amount and (y) if the Trust no longer exists (i)
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to exchange Securities held by the Holders in connection with the conversion of
such Securities in accordance with this Article XIII and (ii) to convert all or
a portion of the Securities into Common Stock and thereupon to deliver such
shares of Common Stock in accordance with the provisions of this Article XIII
and to deliver to such Holders a new Security or Securities for any resulting
unconverted principal amount.

                  (f) All shares of Common Stock delivered upon any conversion
of Restricted Securities shall bear a restrictive legend substantially in the
form of the legend required to be set forth on such Securities and shall be
subject to the restrictions on transfer provided in such legend and in Section
3.06(b) hereof. Neither the Trustee nor the Conversion Agent shall have any
responsibility for the inclusion or content of any such restrictive legend on
such Common Stock; provided, however, that the Trustee or the Conversion Agent
shall have provided to the Company or to the Company's transfer agent for such
Common Stock, prior to or concurrently with a request to the Company to deliver
to such Conversion Agent certificates for such Common Stock, written notice that
the Securities delivered for conversion are Restricted Securities.

                  SECTION 13.03.  Conversion Price Adjustments.  The Applicable
Conversion Price shall be subject to adjustment (without duplication) from time
to time as follows:

                  (i) In case the Company shall pay a dividend or make a
         distribution on the Common Stock exclusively in Common Stock, the
         Applicable Conversion Price in effect at the opening of business on the
         day following the date fixed for the determination of stockholders
         entitled to receive such dividend or other distribution shall be
         reduced by multiplying such Applicable Conversion Price by a fraction
         of which the numerator shall be the number of shares of Common Stock
         outstanding at the close of business on the date fixed for such
         determination and the denominator shall be the sum of such number of
         shares and the total number of shares constituting such dividend or
         other distribution, such reduction to become effective immediately
         after the opening of business on the day following the date fixed for
         such determination. For the purposes of this subparagraph (i), the
         number of shares of Common Stock at any time outstanding shall not
         include shares held in the treasury of the Company.
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                                                                              84


         In the event that such dividend or distribution is not so paid or made,
         the Applicable Conversion Price shall again be adjusted to be the
         Applicable Conversion Price which would then be in effect if such
         dividend or distribution had not occurred.

                  (ii) In case the Company shall pay or make a dividend or other
         distribution on its Common Stock consisting exclusively of, or shall
         otherwise issue to all holders of its Common Stock, rights or warrants,
         in each case entitling the holders thereof to subscribe for or purchase
         shares of Common Stock at a price per share less than the current
         market price per share (determined as provided in subparagraph (vii))
         of the Common Stock on the date fixed for the determination of
         stockholders entitled to receive such rights or warrants, the
         Applicable Conversion Price in effect at the opening of business on the
         day following the date fixed for such determination shall be reduced by
         multiplying such Applicable Conversion Price by a fraction of which the
         numerator shall be the number of shares of Common Stock outstanding at
         the close of business on the date fixed for such determination plus the
         number of shares of Common Stock which the aggregate of the offering
         price of the total number of shares of Common Stock so offered for
         subscription or purchase would purchase at such current market price
         and the denominator shall be the number of shares of Common Stock
         outstanding at the close of business on the date fixed for such
         determination plus the number of shares of Common Stock so offered for
         subscription or purchase, such reduction to become effective
         immediately after the opening of business on the day following the date
         fixed for such determination. To the extent that rights are not so
         issued or shares of Common Stock are not so delivered after the
         expiration of such rights or warrants, the Applicable Conversion Price
         shall be readjusted to the Applicable Conversion Price which would then
         be in effect if such date fixed for the determination of stockholders
         entitled to receive such rights or warrants had not been fixed. For the
         purposes of this subparagraph (ii), the number of shares of Common
         Stock at any time outstanding shall not include shares held in the
         treasury of the Company.

                  (iii) In case outstanding shares of Common Stock shall be
         subdivided into a greater number of shares of Common Stock, the
         Applicable Conversion Price in effect
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                                                                              85


         at the opening of business on the day following the day upon which such
         subdivision becomes effective shall be proportionately reduced and,
         conversely, in case outstanding shares of Common Stock shall each be
         combined into a smaller number of shares of Common Stock, the
         Applicable Conversion Price in effect at the opening of business on the
         day following the day upon which such combination becomes effective
         shall be proportionately increased, such reduction or increase, as the
         case may be, to become effective immediately after the opening of
         business on the day following the day upon which such subdivision or
         combination becomes effective.

                  (iv) Subject to the last sentence of this subparagraph (iv),
         in case the Company shall, by dividend or otherwise, distribute to all
         holders of its Common Stock evidences of its indebtedness, shares of
         any class or series of capital stock, cash or assets (including
         securities, but excluding any rights or warrants referred to in
         subparagraph (ii) of this Section 13.03, any dividend or distribution
         paid exclusively in cash and any dividend or distribution referred to
         in subparagraph (i) of this Section 13.03), the Applicable Conversion
         Price shall be reduced so that the same shall equal the price
         determined by multiplying the Applicable Conversion Price in effect
         immediately prior to the effectiveness of the Applicable Conversion
         Price reduction contemplated by this subparagraph (iv) by a fraction of
         which the numerator shall be the current market price per share
         (determined as provided in subparagraph (vii) of this Section 13.03) of
         the Common Stock on the date fixed for the determination of
         stockholders entitled to receive such distribution (the "Reference
         Date") less the fair market value (as determined in good faith by the
         Board of Directors, whose determination shall be conclusive and
         described in a resolution of the Board of Directors), on the Reference
         Date, of the portion of the evidences of indebtedness, shares of
         capital stock, cash and assets so distributed applicable to one share
         of Common Stock and the denominator shall be such current market price
         per share of the Common Stock, such reduction to become effective
         immediately prior to the opening of business on the day following the
         Reference Date. In the event that such dividend or distribution is not
         so paid or made, the Applicable Conversion Price shall again be
         adjusted to be the Applicable Conversion Price which would then be in
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                                                                              86


         effect if such dividend or distribution had not occurred. For purposes
         of this subparagraph (iv), any dividend or distribution that includes
         shares of Common Stock or rights or warrants to subscribe for or
         purchase shares of Common Stock shall be deemed instead to be (1) a
         dividend or distribution of the evidences of indebtedness, shares of
         capital stock, cash or assets other than such shares of Common Stock or
         such rights or warrants (making any Applicable Conversion Price
         reduction required by this subparagraph (iv)) immediately followed by
         (2) a dividend or distribution of such shares of Common Stock or such
         rights or warrants (making any further Applicable Conversion Price
         reduction required by subparagraph (i) or (ii) of this Section 13.03),
         except any shares of Common Stock included in such dividend or
         distribution shall not be deemed "outstanding at the close of business
         on the date fixed for such determination" within the meaning of
         subparagraph (i) of this Section 13.03.

                  (v) In case the Company shall pay or make a dividend or other
         distribution on its Common Stock exclusively in cash (excluding (x)
         cash dividends to the extent that they do not exceed the per share
         amount of the smallest of the immediately four preceding quarterly cash
         dividends (as adjusted to appropriately reflect any of the events
         referred to in subparagraphs (i), (ii), (iii), (iv), (v) and (vi)), and
         (y) cash dividends to the extent that the annualized per share amount
         thereof does not exceed 12 1/2% of the current market price per share
         of the Common Stock on the Trading Day next preceding the date of
         declaration of such dividend, the Applicable Conversion Price shall be
         reduced so that the same shall equal the price determined by
         multiplying the Applicable Conversion Price in effect immediately prior
         to the effectiveness of the Applicable Conversion Price reduction
         contemplated by this subparagraph (v) by a fraction of which the
         numerator shall be the current market price per share (determined as
         provided in subparagraph (vii) of this Section 13.03) of the Common
         Stock on the date fixed
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                                                                              87


         for the payment of such distribution less the amount of cash so
         distributed and not excluded as provided applicable to one share of
         Common Stock and the denominator shall be such current market price per
         share of the Common Stock, such reduction to become effective
         immediately prior to the opening of business on the day following the
         date fixed for the payment of such distribution; provided, however,
         that in the event the portion of the cash so distributed applicable to
         one share of Common Stock is equal to or greater than the current
         market price per share (as defined in subparagraph (vii) of this
         Section 13.03) of the Common Stock on the record date mentioned above,
         in lieu of the foregoing adjustment, adequate provision shall be made
         so that each Holder of Securities shall have the right to receive upon
         conversion the amount of cash such Holder would have received had such
         Holder converted each Security immediately prior to the record date for
         the distribution of the cash. In the event that such dividend or
         distribution is not so paid or made, the Applicable Conversion Price
         shall again be adjusted to be the Applicable Conversion Price which
         would then be in effect if such record date had not been fixed.

                  (vi) In case a tender or exchange offer (other than an odd-lot
         offer) made by the Company or any Subsidiary of the Company for all or
         any portion of the Company's Common Stock shall expire and such tender
         or exchange offer shall involve the payment by the Company or such
         Subsidiary of consideration per share of Common Stock having a fair
         market value (as determined in good faith by the Board of Directors,
         whose determination shall be conclusive and described in a resolution
         of the Board of Directors) at the last time (the "Expiration Time")
         tenders or exchanges may be made pursuant to such tender or exchange
         offer (as it shall have been amended) that exceeds 110% of the current
         market price per share (determined as provided in subparagraph (vii) of
         this Section 13.03) of the Common Stock on the Trading Day next
         succeeding the Expiration Time, the Applicable Conversion Price shall
         be reduced so that the same shall equal the price determined by
         multiplying the Applicable Conversion Price in effect immediately prior
         to the effectiveness of the Applicable Conversion Price reduction
         contemplated by this subparagraph (vi) by a fraction of which the
         numerator shall be the number of shares of Common Stock outstanding
         (including any tendered or exchanged shares) at the Expiration Time
         multiplied by the current market price per share (determined as
         provided in subparagraph (vii) of this Section 13.03) of the Common
         Stock on the Trading Day next succeeding the Expiration Time and the
         denominator shall be the sum of (x) the fair market value (determined
         as aforesaid) of the
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                                                                              88


         aggregate consideration payable to stockholders based on the acceptance
         (up to any maximum specified in the terms of the tender or exchange
         offer) of all shares validly tendered or exchanged and not withdrawn as
         of the Expiration Time (the shares deemed so accepted, up to any such
         maximum, being referred to as the "Purchased Shares") and (y) the
         product of the number of shares of Common Stock outstanding (less any
         Purchased Shares) at the Expiration Time and the current market price
         per share (determined as provided in subparagraph (vii) of this Section
         13.03) of the Common Stock on the Trading Day next succeeding the
         Expiration Time, such reduction to become effective immediately prior
         to the opening of business on the day following the Expiration Time.

                  (vii) For the purpose of any computation under subparagraphs
         (ii), (iv), (v) and (vi) of this Section 13.03, the current market
         price per share of Common Stock on any date in question shall be deemed
         to be the average of the daily Closing Prices for the ten consecutive
         Trading Days prior to the earlier of the day in question and, if
         applicable, the day before the "ex" date with respect to the issuance
         or distribution requiring such computation; provided, however, that if
         another event occurs that would require an adjustment pursuant to
         subparagraphs (i) through (vi) of this Section 13.03, inclusive, the
         Board of Directors may make such adjustments to the Closing Prices
         during such five Trading Day period as it deems appropriate to
         effectuate the intent of the adjustments in this Section 13.03, in
         which case any such determination by the Board of Directors shall be
         set forth in a Board Resolution and shall be conclusive. For purposes
         of this paragraph, the term "ex" date, (1) when used with respect to
         any issuance or distribution, means the first date on which the Common
         Stock is quoted regular way on the New York Stock Exchange Composite
         Tape or on such successor securities exchange on which the Common Stock
         may be quoted or listed or in the relevant market from which the
         Closing Prices were obtained without the right to receive such issuance
         or distribution, and (2) when used with respect to any tender or
         exchange offer means the first date on which the Common Stock is quoted
         regular way on such securities exchange or in such market after the
         Expiration Time of such offer.
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                                                                              89


                  (viii) The Company may make such reductions in the Applicable
         Conversion Price, in addition to those required by subparagraphs (i),
         (ii), (iii), (iv), (v) and (vi) of this Section 13.03, as it considers
         to be advisable to avoid or diminish any income tax to holders of
         Common Stock or rights to purchase Common Stock resulting from any
         dividend or distribution of stock (or rights to acquire stock) or from
         any event treated as such for income tax purposes.

                  (ix) There shall also be no adjustment of the Applicable
         Conversion Price in case of the issuance of any Common Stock (or
         securities convertible into or exchangeable for Common Stock), except
         as specifically described above. If any action would require adjustment
         of the Applicable Conversion Price, pursuant to more than one of the
         anti-dilution provisions set forth in this Article XIII, only one
         adjustment shall be made and such adjustment shall be the amount of
         adjustment that has the highest absolute value to Holders. Furthermore,
         no adjustment in the Applicable Conversion Price shall be required
         unless such adjustment would require an increase or decrease of at
         least 1% in the Applicable Conversion Price; provided, however, that
         any adjustments which by reason of this sentence are not required to be
         made shall be carried forward and taken into account in determining
         whether any subsequent adjustment shall be required.

                  SECTION 13.04. Reclassification, Consolidation, Merger or Sale
of Assets. In the event that the Company shall be a party to any transaction
(including without limitation (a) any recapitalization or reclassification of
the Common Stock (other than a change in par value, or from par value to no par
value, or from no par value to par value, or as a result of a subdivision or
combination of the Common Stock), (b) any consolidation of the Company with, or
merger of the Company into, any other Person, any merger of another Person into
the Company (other than a merger which does not result in a reclassification,
conversion, exchange or cancelation of outstanding shares of Common Stock of the
Company), (c) any sale or transfer of all or substantially all of the assets of
the Company or (d) any compulsory share exchange) (each of the events in the
preceding clauses (a) through (d) being referred to as a "Company Transaction"),
in each case, as a result of which shares of Common Stock shall be converted
into the right to receive other securities, cash or other property, then lawful
provision
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                                                                              90


shall be made as part of the terms of such Company Transaction whereby the
Holder of each Security then outstanding shall have the right thereafter to
convert such Security only into (i) in the case of any Company Transaction other
than a Common Stock Fundamental Change, the kind and amount of securities, cash
and other property receivable upon the consummation of the Company Transaction
by a holder of that number of shares of Common Stock into which such Security
was convertible immediately prior to such transaction, after giving effect to
any adjustment in the Applicable Conversion Price required by the provision of
Section 13.07(a)(i), and (ii) in the case of a Company Transaction involving a
Common Stock Fundamental Change, common stock of the kind received by holders of
Common Stock as a result of such Common Stock Fundamental Change in an amount
determined pursuant to the provisions of Section 13.07(a)(ii). Holders of the
Securities shall have no voting rights with respect to any Company Transaction
described in this Section 13.04.

                  The Company or the Person formed by such consolidation or
resulting from such merger or which acquired such assets or which acquires the
Company's shares, as the case may be, shall make provision in its certificate or
articles of incorporation or other constituent document to establish such right.
Such certificate or articles of incorporation or other constituent document
shall provide for adjustments which, for events subsequent to the effective date
of such certificate or articles of incorporation or other constituent document,
shall be as nearly equivalent as may be practicable to the adjustments provided
for in this Article XIII. The above provisions shall similarly apply to
successive transactions of the foregoing type.

                  SECTION 13.05. Notice of Adjustments of Conversion Price.
Whenever the Applicable Conversion Price is adjusted as herein provided:

                           (a) the Company shall compute the adjusted Applicable
         Conversion Price and shall prepare a certificate signed by the Chief
         Financial Officer or the Treasurer of the Company setting forth the
         adjusted Applicable Conversion Price and showing in reasonable detail
         the facts upon which such adjustment is based, and such certificate
         shall forthwith be filed with the Trustee, the Conversion Agent and the
         transfer agent for the Preferred Securities and the Securities; and
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                                                                              91


                           (b) a notice stating the Applicable Conversion Price
         has been adjusted and setting forth the adjusted Applicable Conversion
         Price shall as soon as practicable be mailed by the Company to all
         record holders of Preferred Securities and the Securities at their last
         addresses as they appear upon the stock transfer books of the Company
         and the books and records of the Trust, respectively.

                  SECTION 13.06.  Prior Notice of Certain Events.
In case:

                  (i) the Company shall (1) declare any dividend (or any other
         distribution) on its Common Stock, other than (A) a dividend payable in
         shares of Common Stock or (B) a dividend payable in cash that would not
         require an adjustment pursuant to Section 13.03(iv) or (v) or (2)
         authorize a tender or exchange offer that would require an adjustment
         pursuant to Section 13.03(vi);

                  (ii) the Company shall authorize the granting to all holders
         of Common Stock of rights or warrants to subscribe for or purchase any
         shares of stock of any class or series or of any other rights or
         warrants;

                  (iii) of any reclassification of Common Stock (other than a
         subdivision or combination of the outstanding Common Stock, or a change
         in par value, or from par value to no par value, or from no par value
         to par value), or of any consolidation or merger to which the Company
         is a party and for which approval of any stockholders of the Company
         shall be required, or of the sale or transfer of all or substantially
         all of the assets of the Company or of any compulsory share ex change
         whereby the Common Stock is converted into other securities, cash or
         other property; or

                  (iv) of the voluntary or involuntary dissolution,
         liquidation or winding up of the Company;

then the Company shall (a) if any Preferred Securities are outstanding, cause to
be filed with the transfer agent for the Preferred Securities, and shall cause
to be mailed to the holders of record of the Preferred Securities, at their last
addresses as they shall appear upon the books and records of the Trust, or (b)
shall cause to be mailed to all Holders at their last addresses as they shall
appear in the Security Register, at least fifteen days prior to the appli-
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cable record or effective date hereinafter specified, a notice stating (x) the
date on which a record (if any) is to be taken for the purpose of such dividend,
distribution, rights or warrants or, if a record is not to be taken, the date as
of which the holders of Common Stock of record to be entitled to such dividend,
distribution, rights or warrants are to be determined or (y) the date on which
such reclassification, consolidation, merger, sale, transfer, share exchange,
dissolution, liquidation or winding up is expected to become effective, and the
date as of which it is expected that holders of Common Stock of record shall be
entitled to exchange their shares of Common Stock for securities, cash or other
property deliverable upon such reclassification, consolidation, merger, sale,
transfer, share exchange, dissolution, liquidation or winding up (but no failure
to mail such notice or any defect therein or in the mailing thereof shall affect
the validity of the corporate action required to be specified in such notice).

                  SECTION 13.07. Adjustments in Case of Fundamental Changes. (a)
Notwithstanding any other provision in this Article XIII to the contrary, in the
case of any Company Transaction involving a Fundamental Change, the Applicable
Conversion Price will be adjusted immediately after such Fundamental Change as
follows:

                  (i) in the case of a Non-Stock Fundamental Change, the
         Applicable Conversion Price of the Securities shall thereupon become
         the lower of (A) the Applicable Conversion Price in effect immediately
         prior to such Non-Stock Fundamental Change, but after giving effect to
         any other prior adjustments effected pursuant to this Article XIII, and
         (B) the result obtained by multiplying the greater of the Relevant
         Price or the then applicable Reference Market Price by the Optional
         Redemption Ratio (such product shall hereinafter be referred to as the
         "Adjusted Relevant Price" or the "Adjusted Reference Market Price", as
         the case may be); and


                  (ii) in the case of a Common Stock Fundamental Change, the
         Applicable Conversion Price of the Securities in effect immediately
         prior to such Common Stock Fundamental Change, but after giving effect
         to any other prior adjustments effected pursuant to this Article XIII,
         shall thereupon be adjusted by multiplying such Applicable Conversion
         Price by a
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                                                                              93


         fraction of which the numerator shall be the Purchaser Stock Price and
         the denominator shall be the Relevant Price; provided, however, that in
         the event of a Common Stock Fundamental Change in which (A) 100% of the
         value of the consideration received by a holder of Common Stock is
         common stock of the successor, acquiror or other third party (and cash,
         if any, is paid only with respect to any fractional interests in such
         common stock resulting from such Common Stock Fundamental Change) and
         (B) all of the Common Stock shall have been exchanged for, converted
         into or acquired for common stock (and cash with respect to fractional
         interests) of the successor, acquiror or other third party, the
         Applicable Conversion Price of the Securities in effect immediately
         prior to such Common Stock Fundamental Change shall thereupon be
         adjusted by multiplying such Applicable Conversion Price by a fraction
         of which the numerator shall be one and the denominator shall be the
         number of shares of common stock of the successor, acquiror, or other
         third party received by a stockholder for one share of Common Stock as
         a result of such Common Stock Fundamental Change.

                  (b) Definitions. The following definitions shall apply to
terms used in this Article XIII:

                  (1) "Closing Price" of any security on any day shall mean on
         any day the last reported sale price of such security on such day, or
         in case no sale takes place on such day, the average of the closing bid
         and asked prices in each case on the principal national securities
         exchange on which such securities are listed or admitted to trading or,
         if not listed or admitted to trading on any national securities
         exchange, on the NNM or, if such securities are not listed or admitted
         to trading on any national securities exchange or quoted on the NNM,
         the average of the closing bid and asked prices in the over-the-counter
         market as furnished by any New York Stock Exchange member firm selected
         by the Company for such purpose.

                  (2) "Common Stock Fundamental Change" shall mean any
         Fundamental Change in which more than 50% of the value (as determined
         in good faith by the Board of Directors) of the consideration received
         by holders of Common Stock consists of common stock that for each of
         the ten consecutive Trading Days immediately prior to the Entitlement
         Date has been admitted for listing or
   104
                                                                              94


         admitted for listing subject to notice of issuance on a national
         securities exchange or quoted on the NNM.

                  (3) "Entitlement Date" shall mean the record date for
         determination of the holders of Common Stock entitled to receive
         securities, cash or other property in connection with a Non-Stock
         Fundamental Change or a Common Stock Fundamental Change or, if there is
         no such record date, the date upon which holders of Common Stock shall
         have the right to receive such securities, cash or other property.

                  (4) "Fundamental Change" shall mean the occurrence of any
         transaction or event in connection with a plan pursuant to which all or
         substantially all of the Common Stock shall be exchanged for, converted
         into, acquired for or constitute solely the right to receive
         securities, cash or other property (whether by means of an exchange
         offer, liquidation, tender offer, consolidation, merger, combination,
         reclassification, recapitalization or otherwise); provided, however, in
         the case of a plan involving more than one such transaction or event,
         for purposes of adjustment of the Applicable Conversion Price, such
         Fundamental Change shall be deemed to have occurred when substantially
         all of the Common Stock of the Company shall be exchanged for,
         converted into, or acquired for or constitute solely the right to
         receive securities, cash or other property, but the adjustment shall be
         based upon the highest weighted average per share consideration that a
         holder of Common Stock could have received in such transactions or
         events as a result of which more than 50% of the Common Stock of the
         Company shall have been exchanged for, converted into, or acquired for
         or constitute solely the right to receive securities, cash or other
         property.

                  (5)  "Non-Stock Fundamental Change" shall mean any
         Fundamental Change other than a Common Stock Fundamental Change.

                  (6) "Optional Redemption Ratio" means a fraction of which the
         numerator shall be $50 and the denominator will be the then current
         Optional Redemption Price or, prior to April 10, 2001, an amount per
         Security determined by the Company in its sole discretion, after
         consultation with an investment banking firm, to be the equivalent of
         the hypothetical redemption price that
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                                                                              95


         would have been applicable if the Securities had been redeemable during
         such period.

                  (7) "Purchaser Stock Price" shall mean, with respect to any
         Common Stock Fundamental Change, the average of the daily Closing
         Prices of the common stock received in such Common Stock Fundamental
         Change for the ten (10) consecutive Trading Days prior to and including
         the Entitlement Date, as adjusted in good faith by the Board of
         Directors to appropriately reflect any of the events referred to in
         subparagraphs (i), (ii), (iii), (iv), (v) and (vi) of Section 13.03.

                  (8) "Reference Market Price" shall initially mean on the date
         of original issuance of the Securities, $36.17 (which is an amount
         equal to 66-2/3% of the last reported sale price for the Common Stock
         on the New York Stock Exchange Composite Tape on March 26, 1998 and, in
         the event of any adjustment to the Applicable Conversion Price, other
         than as a result of a Non-Stock Fundamental Change, the Reference
         Market Price shall also be adjusted so that the ratio of the Reference
         Market Price to the Applicable Conversion Price after giving effect to
         any such adjustment shall always be the same as the ratio of $36.17 to
         the Initial Conversion Price.

                  (9) "Relevant Price" shall mean (i) in the event of a
         Non-Stock Fundamental Change in which the holders of the Common Stock
         receive only cash, the amount of cash received by a stockholder for one
         share of Common Stock and (ii) in the event of any other Non-Stock
         Fundamental Change or any Common Stock Fundamental Change, the average
         of the daily Closing Prices of the Common Stock for the ten (10)
         consecutive Trading Days prior to and including the Entitlement Date,
         in each case, as adjusted in good faith by the Company to appropriately
         reflect any of the events referred to in subparagraphs (i), (ii),
         (iii), (iv), (v) and (vi) of Section 13.03.

                  (10) "Trading Day" shall mean a day on which securities are
         traded on the national securities exchange or quotation system used to
         determine the Closing Price.

                  SECTION 13.08. Dividend or Interest Reinvestment Plans. (a)
Notwithstanding the foregoing provisions, the
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                                                                              96


issuance of any shares of Common Stock pursuant to any present or future plan
providing for the reinvestment of dividends or interest payable on securities of
the Company and the investment of additional optional amounts in shares of
Common Stock under any such plan, and the issuance of any shares of Common Stock
or options or rights to purchase such shares pursuant to any employee benefit
plan or program of the Company or pursuant to any option, warrant, right or
exercisable, exchangeable or convertible security outstanding as of the date the
Securities were first issued, shall not be deemed to constitute an issuance of
Common Stock or exercisable, exchangeable or convertible securities by the
Company to which any of the adjustment provisions described above applies.

                  (b) There shall also be no adjustment of the Applicable
Conversion Price in case of the issuance of any stock (or securities convertible
into or exchangeable for stock) of the Company except as specifically described
in this Article XIII.

                  SECTION 13.09. Certain Additional Rights. Notwithstanding any
other provision of this Article XIII to the contrary, rights, warrants,
evidences of indebtedness, other securities, cash or other assets (including,
without limitation, any rights distributed pursuant to any stockholder rights
plan) shall be deemed not to have been distributed for purposes of this Article
XIII if the Company makes proper provision so that each Holder who converts a
Security (or any portion thereof) after the date fixed for determination of
stockholders entitled to receive such distribution shall be entitled to receive
upon such conversion, in addition to the shares of Common Stock issuable upon
such conversion, the amount and kind of such distributions that such Holder
would have been entitled to receive if such Holder had, immediately prior to
such determination date, converted such Security into Common Stock.

                  SECTION 13.10. Restrictions on Common Stock Issuable Upon
Conversion. (a) Shares of Common Stock to be issued upon conversion of a
Security in respect of Restricted Preferred Securities (as defined in the
Declaration) shall bear such restrictive legends as the Company may provide in
accordance with applicable law.

                  (b) If shares of Common Stock to be issued upon conversion of
a Security in respect of Restricted Preferred
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                                                                              97


Securities are to be registered in a name other than that of the Holder of such
Preferred Security, then the Person in whose name such shares of Common Stock
are to be registered must deliver to the Conversion Agent a certificate
satisfactory to the Company and signed by such Person, as to compliance with
the restrictions on transfer applicable to such Preferred Security. Neither the
Trustee nor any Conversion Agent or Registrar shall be required to register in a
name other than that of the Holder shares of Common Stock or such Preferred
Securities issued upon conversion of any such Security in respect of such
Preferred Securities not so accompanied by a properly completed certificate.

                  SECTION 13.11. Trustee Not Responsible for Determining
Conversion Price or Adjustments. Neither the Trustee nor any Conversion Agent
shall at any time be under any duty or responsibility to any Holder of any
Security to determine whether any facts exist which may require any adjustment
of the Applicable Conversion Price, or with respect to the nature or extent of
any such adjustment when made, or with respect to the method employed, or herein
or in any supplemental indenture provided to be employed, in making the same.
Neither the Trustee nor any Conversion Agent shall be accountable with respect
to the validity or value (or the kind or amount) of any shares of Common Stock
or of any securities or property, which may at any time be issued or delivered
upon the conversion of any Security; and neither the Trustee nor any Conversion
Agent makes any representation with respect thereto. Neither the Trustee nor any
Conversion Agent shall be responsible for any failure of the Company to make
any cash payment or to issue, transfer or deliver any shares of Common Stock or
stock certificates or other securities or property upon the surrender of any
Security for the purpose of conversion, or, except as expressly herein provided,
to comply with any of the covenants of the Company contained in Article X or
this Article XIII.


                                   ARTICLE XIV

                           Immunity of Incorporators,
                      Stockholders, Officers and Directors

                  SECTION 14.01. No Recourse. No recourse under or upon any
obligation, covenant or agreement of this Indenture, or of any Security, or for
any claim based thereon or otherwise in respect thereof, shall be had
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                                                                              98


against any incorporator, stockholder, officer or director, past, present or
future as such, of the Company or of any predecessor or successor corporation,
either directly or through the Company or any such predecessor or successor
corporation, whether by virtue of any constitution, statute or rule of law, or
by the enforcement of any assessment or penalty or otherwise; it being expressly
understood that this Indenture and the obligations issued hereunder are solely
corporate obligations, and that no such personal liability whatever shall attach
to, or is or shall be incurred by, the incorporators, stockholders, officers or
directors as such, of the Company or of any predecessor or successor
corporation, or any of them, because of the creation of the indebtedness hereby
authorized, or under or by reason of the obligations, covenants or agreements
contained in this Indenture or in any of the Securities or implied therefrom;
and that any and all such personal liability of every name and nature, either at
common law or in equity or by constitution or statute, of, and any and all such
rights and claims against, every such incorporator, stockholder, officer or
director as such, because of the creation of the indebtedness hereby authorized,
or under or by reason of the obligations, covenants or agreements contained in
this Indenture or in any of the Securities or implied therefrom, are hereby
expressly waived and released as a condition of, and as a consideration for, the
execution of this Indenture and the issuance of such Securities.
   109
                                                                              99


                  This instrument may be executed in any number of counterparts,
each of which so executed shall be deemed to be an original, but all such
counterparts shall together constitute but one and the same instrument.


                  IN WITNESS WHEREOF, the parties hereto have caused this
Indenture to be duly executed as of the day and year first above written.


                                             UNION PACIFIC CORPORATION,

                                               by______________________

                                                  Name:
                                                  Title:


                                             THE BANK OF NEW YORK,

                                               by______________________

                                                  Name:
                                                  Title:
   110
                                    EXHIBIT A

                                FORM OF SECURITY

                           [FORM OF FACE OF SECURITY]

[Include if a Global Security: THIS SECURITY IS A GLOBAL SECURITY WITHIN THE
MEANING OF THE INDENTURE HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME
OF THE DEPOSITORY TRUST COMPANY (THE "DEPOSITARY") OR A NOMINEE OF THE
DEPOSITARY. THIS SECURITY IS EXCHANGEABLE FOR A SECURITY REGISTERED IN THE NAME
OF A PERSON OTHER THAN THE DEPOSITARY OR ITS NOMINEE ONLY IN THE LIMITED
CIRCUMSTANCES DESCRIBED IN THE INDENTURE AND NO TRANSFER OF THIS SECURITY (OTHER
THAN A TRANSFER OF THIS SECURITY AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF
THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER
NOMINEE OF THE DEPOSITARY) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

UNLESS THIS SECURITY IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW YORK) TO UNION PACIFIC
CORPORATION OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND
ANY SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR SUCH OTHER NAME
AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY AND
ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY TRANSFER, PLEDGE OR OTHER USE
HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS WRONGFUL INASMUCH AS THE REGISTERED
OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

[Include Restricted Securities Legend if required under Section 2.02:

         THIS SECURITY (OR ITS PREDECESSOR) WAS ORIGINALLY ISSUED IN A
         TRANSACTION EXEMPT FROM REGISTRATION UNDER THE UNITED STATES SECURITIES
         ACT OF 1933 (THE "SECURITIES ACT"), AND THIS SECURITY AND ANY COMMON
         STOCK ISSUABLE UPON CONVERSION HEREOF MAY NOT BE OFFERED, SOLD OR
         OTHERWISE TRANSFERRED IN THE ABSENCE OF SUCH REGISTRATION OR AN
         APPLICABLE EXEMPTION THEREFROM. EACH PURCHASER OF THIS SECURITY IS
         HEREBY NOTIFIED THAT THE SELLER OF THIS SECURITY MAY BE RELYING ON THE
         EXEMPTION FROM THE PROVISIONS OF SECTION 5 OF THE SECURITIES ACT
         PROVIDED BY RULE 144A THEREUNDER.

         THE HOLDER OF THIS SECURITY AGREES FOR THE BENEFIT OF THE ISSUER AND
         THE COMPANY THAT (A) THIS SECURITY AND ANY COMMON STOCK ISSUABLE UPON
         CONVERSION HEREOF MAY BE OFFERED, RESOLD, PLEDGED OR OTHERWISE
         TRANSFERRED, ONLY (i) TO A PERSON WHOM THE SELLER REASONABLY BELIEVES
         IS A "QUALIFIED INSTITUTIONAL BUYER" (AS DEFINED IN RULE 144A UNDER THE
         SECURITIES ACT) IN A TRANSACTION MEETING THE REQUIREMENTS OF RULE 144A,
         (ii) OUTSIDE THE UNITED STATES IN A TRANSACTION IN ACCORDANCE WITH RULE
         904 UNDER THE SECURITIES ACT, (iii) PURSUANT TO AN EXEMPTION FROM
         REGISTRATION UNDER THE SECURITIES ACT PROVIDED BY RULE 144 THEREUNDER
         (IF AVAILABLE) OR (iv) PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT
         UNDER THE SECURITIES ACT, IN EACH OF CASES (i) THROUGH (iv) IN
         ACCORDANCE WITH ANY APPLICABLE SECURITIES LAWS OF ANY STATE OF THE
         UNITED STATES OR ANY OTHER APPLICABLE JURISDICTION, AND (B) THE HOLDER
         WILL, AND EACH SUBSEQUENT HOLDER IS REQUIRED TO, NOTIFY ANY PURCHASER
         OF THIS SECURITY FROM IT OF THE RESALE RESTRICTIONS REFERRED TO IN (A)
         ABOVE.]
   111
                                                                               2


                            UNION PACIFIC CORPORATION

                         Convertible Junior Subordinated
                               Debenture Due 2028

No.                                                           $
                                                                    [CUSIP No. ]

                  UNION PACIFIC CORPORATION, a corporation duly organized and
existing under the laws of the State of Utah (herein called "the Company", which
term includes any successor corporation under the Indenture hereinafter referred
to), for value received, hereby promises to pay to        , or registered
assigns, the principal sum [indicated on Schedule A hereof](1) [of Dollars](2)
($ ) on April 1, 2028.

Interest Payment Dates:             January 1, April 1, July 1 and October 1,
                                    commencing July 1, 1998

Regular Record Dates:               the close of business on the fifteenth day
                                    immediately preceding each Interest Payment
                                    Date, commencing June 15, 1998

                  Reference is hereby made to the further provisions of this
Security set forth on the reverse hereof, which further provisions shall for all
purposes have the same effect as if set forth at this place.

                  Unless the certificate of authentication hereon has been
executed by the Trustee referred to on the reverse hereof by manual signature,
this Security shall not be entitled to any benefit under the Indenture or be
valid or obligatory for any purpose.



- --------
   (1)              Applicable to Global Securities only.
   (2)              Applicable to certificated Securities only.
   112
                  IN WITNESS WHEREOF, the Company has caused this instrument to
be signed manually or by facsimile by its duly authorized officers and a
facsimile of its corporate seal to be affixed hereto or imprinted hereon.

Dated:         ,

                                                     UNION PACIFIC CORPORATION


                                                     By:________________________
                                                        Name:
                                                        Title:


[Seal]

Attest:

_____________________





                              TRUSTEE'S CERTIFICATE
                                OF AUTHENTICATION

                  This is one of the Securities referred to in the
within-mentioned Indenture.


Dated:           ,                          THE BANK OF NEW YORK
                                                  as Trustee


                                            By: _______________________
                                                  Authorized Signatory
   113
                                                                               2


                          [FORM OF REVERSE OF SECURITY]

                            UNION PACIFIC CORPORATION

                         Convertible Junior Subordinated
                              Debenture Due 2028(3)

                  1. Interest. Union Pacific Corporation, a Utah corporation
(the "Company"), is the issuer of this Convertible Junior Subordinated Debenture
Due 2028 (the "Security") limited in aggregate principal amount to
$1,546,391,750, issued under the Indenture hereinafter referred to. The Company
promises to pay interest on the Securities in cash from April 1, 1998 or from
the most recent interest payment date to which interest has been paid or duly
provided for, quarterly (subject to deferral for up to 20 consecutive quarters
as described in Section 3 hereof) in arrears on January 1, April 1, July 1, and
October 1 of each year (each such date, an "Interest Payment Date"), commencing
July 1, 1998, at the Applicable Rate, plus Additional Sums, if any, until the
principal hereof shall have become due and payable.

                  The amount of interest payable for any period will be computed
on the basis of twelve 30-day months and a 360-day year. To the extent lawful,
the Company shall pay interest on overdue installments of interest (without
regard to any applicable grace period) at the rate borne by the Securities,
compounded quarterly. Any interest paid on this Security shall be increased to
the extent necessary to pay Additional Sums as set forth in this Security.

                  2. Additional Sums. The Company shall pay to Union Pacific
Capital Trust (and its permitted successors or assigns under the Declaration)
(the "Trust") such additional amounts as may be necessary in order that the
amount of dividends or other distributions then due and payable by the Trust on
the Preferred Securities that at any time remain outstanding in accordance with
the terms thereof shall not be reduced as a result of any additional taxes,
duties and other governmental charges of whatever nature (other than withholding
taxes) imposed by the United States or any other taxing authority.

                  3. Extension of Interest Payment Period. So long as no Event
of Default has occurred and is continuing, the Company shall have the right, at
any time during the term of this Security, from time to time to defer payments
of interest by extending the interest payment period of such Security for up to
20 consecutive quarters (a "Deferral Period"); provided that no Deferral Period
may extend beyond April 1, 2028. To the extent permitted by applicable law,
interest, the payment of which has been deferred because of the extension of the
interest payment period pursuant to Section 3.13 of the Indenture, will bear
interest thereon at the Applicable Rate compounded quarterly for each quarter of
the Deferral Period ("Compounded Interest"). On the applicable Payment
Resumption Date, the Company shall pay all interest then accrued and unpaid on
the Securities, including any Compounded Interest that shall be payable to the
Holders of the Securities in whose

- --------

   (3) All terms used in this Security which are defined in the Indenture or in
the Declaration referred to herein shall have the meanings assigned to them in
the Indenture or the Declaration, as the case may be.
   114
                                                                               3


names the Securities are registered in the Security Register on the record date
fixed for such Payment Resumption Date. Before the termination of any Deferral
Period, the Company may further extend such period as provided in the
Indenture, provided that such period together with all such further extensions
thereof shall not exceed 20 consecutive quarters or extend beyond the Stated
Maturity of the Security. Upon the termination of any Deferral Period and upon
the payment of all Compounded Interest and Additional Sums (together,
"Additional Payments"), if any, then due, the Company may commence a new
Deferral Period, subject to the foregoing requirements. No interest shall be due
and payable during a Deferral Period except on the applicable Payment Resumption
Date.

                  The Company shall give the Holder of the Security and the
Trustee written notice (a "Deferral Notice") of its selection of a Deferral
Period at least ten days prior to the record date for any distributions that
would have been payable on the Trust Securities except for the decision to begin
or extend such Deferral Period. The Company may elect to pay all interest then
accrued and unpaid on the Securities, including Compound Interest, on an
Interest Payment Date prior to its most recently established Payment Resumption
Date, provided that the Company gives the Holder of the Security and the Trustee
a new Deferral Notice setting forth the revised Payment Resumption Date at least
three Business Days prior to the Regular Record Date for such revised Payment
Resumption Date.

                  The quarter in which any Deferral Notice is given pursuant to
the second paragraph of this Section 3 shall be counted as one of the 20
quarters permitted in the maximum Deferral Period permitted under the first
paragraph of this Section 3.

                  4. Method of Payment. The interest so payable, and punctually
paid or duly provided for, on any Interest Payment Date will, as provided in the
Indenture, be paid to the Person in whose name this Security (or one or more
Predecessor Securities) is registered at the close of business on the regular
record date for such interest installment, which shall be the close of business
on the fifteenth day immediately preceding each Interest Payment Date (the
"Regular Record Date"), commencing June 15, 1998. Any such interest not so
punctually paid or duly provided for shall forthwith cease to be payable to the
Holder on such Regular Record Date and may either be paid to the Person in whose
name this Security (or one or more Predecessor Securities) is registered at the
close of business on a Special Record Date for the payment of such Defaulted
Interest to be fixed by the Trustee, notice whereof shall be given to Holders of
Securities not less than ten days prior to such Special Record Date, or be paid
at any time in any other lawful manner not inconsistent with the requirements of
any securities exchange on which the Securities may be listed, and upon such
notice as may be required by such exchange, all as more fully provided in said
Indenture, provided that any such payment will be made in such coin or currency
of the United States of America which at the time of payment is a legal tender
for payment of public and private debts.

                  Payment of the principal of and interest on this Security will
be made at the office or agency of the Company maintained for that purpose in
New York, New York, in coin or currency of the United States of America which at
the time of payment is legal tender for payment of public and private debts;
provided, however, that at any time that the Property Trustee is not the sole
holder of the Securities, payment of
   115
                                                                               4


interest may, at the option of the Company, be made by check mailed to the
address of the Person entitled thereto as such address shall appear in the
Security Register or by wire transfer.

                  5.  Paying Agent and Security Registrar.  The Trustee will act
as Paying Agent, Security Registrar and Conversion Agent.  The Company may
change any Paying Agent, Security Registrar, co-registrar or Conversion
Agent without prior notice.  The Company or any of its Affiliates may act
in any such capacity.

                  6. Indenture. The Company issued the Securities under an
indenture, dated as of April 1, 1998 (the "Indenture"), between the Company and
The Bank of New York, as Trustee (herein called the "Trustee", which term
includes any successor trustee under the Indenture), to which Indenture and all
indentures supplemental thereto reference is hereby made for a statement of the
respective rights, limitations of rights, duties and immunities thereunder of
the Trustee, the Company and the Holders of the Securities, and of the terms
upon which the Securities are, and are to be, authenticated and delivered. The
terms of the Securities include those stated in the Indenture and those made
part of the Indenture by the Trust Indenture Act of 1939 (15 U.S. Code
Sections 77aaa-77bbbb) ("Trust Indenture Act") as in effect on the date of
the Indenture. The Securities are subject to, and qualified by, all such terms,
certain of which are summarized herein, and holders are referred to the
Indenture and the Trust Indenture Act for a statement of such terms. The
Securities are unsecured general obligations of the Company limited to up to
$1,546,391,750 and subordinated in right of payment to all existing and future
Senior Debt of the Company. No reference herein to the Indenture and no
provision of this Security or of the Indenture shall alter or impair the
obligation of the Company, which is absolute and unconditional, to pay the
principal of and interest on this Security at the times, place and rate, and in
the coin or currency, herein prescribed or to convert this Security as provided
in the Indenture.

                  7. Optional Redemption. The Securities are redeemable at the
Company's option (an "Optional Redemption") in whole or in part, at any time or
from time to time, on or after April 10, 2001, at a Redemption Price equal to
$51.56 per $50 principal amount of the Securities to be redeemed plus any
accrued and unpaid interest, including Additional Payments, if any, to the
Redemption Date, if redeemed on or before April 1, 2002, and at the prices per
$50 principal amount of Securities set forth in the table below, plus any
accrued and unpaid interest, including Additional Payments, if any, to the
Redemption Date, if redeemed during the 12-month period ending on April 1:





                                                          Price Per $50
                                                            Principal
                         Year                                 Amount
                                                      
                         2003.........................        $51.04
                         2004.........................        $50.52

   116
                                                                               5


and thereafter at $50 per $50 principal amount of the Securities plus, in each
case, any accrued and unpaid interest, including Additional Payments, if any, to
the Redemption Date.

                  8. Optional Redemption Upon Tax Event. Subject to the
conditions set forth in the Indenture, the Securities are subject to redemption
in whole, but not in part, if a Tax Event shall occur and be continuing, at any
time within 90 days following the occurrence of such Tax Event, at a Redemption
Price equal to $50 per $50 principal amount thereof, plus accrued but unpaid
interest, including Additional Payments, if any, to the Redemption Date.

                  In lieu of the foregoing, the Company also shall have the
option of causing the Securities to remain outstanding and pay Additional Sums
on the Securities.

                  9. Notice of Redemption. Notice of redemption will be mailed
by first-class mail, postage prepaid, at least 30 days (or 20 days, in the case
of a redemption upon the occurrence of a Tax Event), but not more than 60 days
before the Redemption Date to each Holder of the Securities to be redeemed at
such Holder's address appearing in the Security Register.

                  10.  No Sinking Fund.  There are no sinking fund payments with
respect to the Securities.

                  11. Payment to Registered Holders; Cessation of Interest
Accrual Upon Redemption. If this Security is redeemed subsequent to a Regular
Record Date with respect to any Interest Payment Date specified above and on or
prior to such Interest Payment Date, then any accrued interest will be paid to
the person in whose name this Security is registered at the close of business
on such record date. On or after the Redemption Date, interest will cease to
accrue on the Securities, or portion thereof, called for redemption.

                  12. Subordination. The payment of the principal of, interest
on or any other amounts due on the Securities is subordinated in right of
payment to all existing and future Senior Debt (as defined below) of the
Company, as described in the Indenture. Each Holder, by accepting a Security,
agrees to such subordination and authorizes and directs the Trustee on its
behalf to take such action as may be necessary or appropriate to effectuate the
subordination so provided and appoints the Trustee as its attorney-in-fact for
such purpose.

                  "Senior Debt" means (i) the principal of, and premium and
interest, if any, on all indebtedness of the Company for money borrowed, whether
outstanding on the date of execution of the Indenture or thereafter created,
assumed or incurred, (ii) all obligations to make payment pursuant to the terms
of financial instruments, such as (a) securities contracts and foreign currency
exchange contracts, (b) derivative instruments, such as swap agreements
(including interest rate and foreign exchange rate swap agreements), cap
agreements, floor agreements, collar agreements, interest rate agreements,
foreign exchange agreements, options, commodity futures contracts and commodity
options contracts, and (c) similar financial instruments; except, in the case of
both (i) and (ii) above, such indebted ness and obligations that are expressly
stated to rank junior in right of payment to, or pari passu in right of payment
with, the Securities, (iii) indebtedness or obligations of others of the kind
described in both (i) and (ii) above
   117
                                                                               6


for the payment of which the Company is responsible or liable as guarantor or
otherwise, and (iv) deferrals, renewals or extensions of any such Senior Debt;
provided, however, that Senior Debt shall not be deemed to include (a) any Debt
of the Company which, when incurred and without respect to any election under
Section 1111(b) of the United States Bankruptcy Code of 1978, was without
recourse to the Company, (b) trade accounts payable and accrued liabilities
arising in the ordinary course of business, (c) any Debt of the Company to any
of its subsidiaries, (d) Debt to any employee of the Company, and (e) Debt which
by its terms is subordinated to trade accounts payable or accrued liabilities
arising in the ordinary course of business to the extent that payments made to
the holders of such Debt by the Holders of the Securities as a result of the
subordination provisions of the Indenture would be greater than such payments
otherwise would have been as a result of any obligation of such holders of such
Debt to pay amounts over to the obligees on such trade accounts payable or
accrued liabilities arising in the ordinary course of business as a result of
subordination provisions to which such Debt is subject.

                  13. Conversion. The Holder of any Security has the right,
exercisable at any time prior to 5:00 p.m., New York City time, on April 1,
2028, to convert the principal amount thereof (or any portion thereof that is an
integral multiple of $50) into shares of Common Stock at the initial
conversation rate of 0.7257 shares of Common Stock for each $50 in aggregate
principal amount of Securities (equivalent to a conversion price of $68.90 per
share of Common Stock of the Company). The conversion ratio and equivalent
conversion price in effect at any time are known as the "Applicable Conversion
Price" and the "Applicable Conversion Ratio," respectively, and are subject to
adjustment under certain circumstances. If a Security is called for redemption,
the conversion right will terminate at the close of business on the Business Day
immediately preceding the corresponding Redemption Date, unless the Company
defaults in making the payment due upon redemption.

                  To convert a Security, a Holder must (1) complete and sign a
conversion notice substantially in the form attached hereto, (2) surrender the
Security to a Conversion Agent, (3) furnish appropriate endorsements or transfer
documents if required by the Security Registrar or Conversion Agent and (4) pay
any transfer or similar tax, if required. Upon conversion, no adjustment or
payment will be made for interest or dividends, but if any Holder surrenders a
Security for conversion after the close of business on the Regular Record Date
for the payment of an installment of interest and prior to the opening of
business on the next Interest Payment Date, then, notwithstanding such
conversion, the interest payable on such Interest Payment Date will be paid to
the registered Holder of such Security on such Regular Record Date. In such
event, such Security, when surrendered for conversion, need not be accompanied
by payment of an amount equal to the interest payable on such Interest Payment
Date on the portion so converted. The number of shares issuable upon conversion
of a Security is determined by dividing the principal amount of the Security
converted by the Applicable Conversion Price in effect on the Conversion Date.
No fractional shares will be issued upon conversion but a cash adjustment will
be made for any fractional interest. The outstanding principal amount of any
Security shall be reduced by the portion of the principal amount thereof
converted into shares of Common Stock.

                  14. Registration Rights. The holders of the Preferred
Securities, the Securities, the Guarantee Agreement and the shares of
   118
                                                                               7


Common Stock of the Company issuable upon conversion of the Securities
(collectively, the "Registrable Securities") are entitled to the benefits of a
Registration Rights Agreement, dated as of April 1, 1998, among the Company, the
Trust and the Initial Purchasers (the "Registration Rights Agreement"). Pursuant
to the Registration Rights Agreement the Company and the Trust have agreed for
the benefit of the holders of the Registrable Securities that (i) they will, at
the Company's sole expense, prior to May 1, 1998, file a shelf registration
statement (the "Shelf Registration Statement") with the Commission with respect
to resales of the Registrable Securities, (ii) they will use their best efforts
to cause such Shelf Registration Statement to be declared effective under the
Securities Act prior to July 30, 1998, and (iii) they will use their best
efforts to maintain such Shelf Registration Statement continuously effective
under the Securities Act (subject to certain exceptions under the Registration
Rights Agreement) until the second anniversary of the effectiveness of the Shelf
Registration Statement or such other period as shall be required under Rule
144(k) thereunder or any successor rule or regulation thereto or such earlier
date as is provided in the Registration Rights Agreement. If the Company fails
to comply with either of clauses (ii) or (iii) above, subject to certain
exceptions provided in the Registration Rights Agreement, (a "Registration
Default") then, at such time, the Applicable Rate will increase by 50 basis
points (.50%). Such increase will remain in effect from and including the date
on which any such Registration Default shall occur to but excluding the date on
which all Registration Defaults have been cured, on which date the interest rate
on the Securities will revert to the interest rate originally borne by the
Securities.

                  15. Registration, Transfer, Exchange and Denominations. As
provided in the Indenture and subject to certain limitations therein set forth,
the transfer of this Security is registrable in the Security Register, upon
surrender of this Security for registration of transfer at the office or agency
of the Company in New York, New York, duly endorsed by, or accompanied by a
written instrument of transfer in form satisfactory to the Company and the
Security Registrar duly executed by, the Holder hereof or his attorney duly
authorized in writing, and thereupon one or more new Securities, of authorized
denominations and for the same aggregate principal amount, will be issued to the
designated transferee or transferees.

                  The Securities are issuable only in registered form without
coupons in denominations of $50 and integral multiples thereof. No service
charge shall be made for any such registration of transfer or exchange, but the
Company may require payment of a sum sufficient to cover any tax or other
governmental charge payable in connection therewith. Prior to due presentment of
this Security for registration of transfer, the Company, the Trustee and any
agent of the Company or the Trustee may treat the Person in whose name this
Security is registered as the owner hereof for all purposes, whether or not this
Security be overdue, and neither the Company, the Trustee nor any such agent
shall be affected by notice to the contrary. In the event of redemption or
conversion of this Security in part only, a new Security or Securities for the
unredeemed or unconverted portion hereof will be issued in the name of the
Holder hereof upon the cancelation hereof.

                  16.  Persons Deemed Owners.  Except as provided in Section 3
hereof, the registered Holder of a Security may be treated as its owner for
all purposes.
   119
                                                                               8


                  17. Unclaimed Money. If money for the payment of principal or
interest remains unclaimed for two years, the Trustee and the Paying Agent shall
pay the money back to the Company at its written request. After that, holders of
Securities entitled to the money must look to the Company for payment unless an
abandoned property law designates another Person and all liability of the
Trustee and such Paying Agent with respect to such money shall cease.

                  18. Events of Default and Remedies. The Securities shall have
the Events of Default as set forth in Section 5.01 of the Indenture. Subject to
certain limitations in the Indenture, if an Event of Default occurs and is
continuing, the Trustee by notice to the Company or the holders of at least 25%
in aggregate principal amount of the Outstanding Securities by notice to the
Company and the Trustee may declare all amounts payable on the Securities
(including any Additional Payments) to be due and payable immediately; provided
that, if the Property Trustee is the sole Holder of the Security and if upon an
Event of Default, the Trustee or the holder of not less than 25% in aggregate
principal amount of the then outstanding Securities fail to declare the
principal of all the Securities to be immediately due and payable, the holders
of at least 25% in aggregate liquidation amount of Preferred Securities then
outstanding shall have such right by a notice in writing to the Company and the
Trustee; and upon any such declaration such principal and all accrued interest
shall become immediately due and payable; and provided further that the payment
of principal and interest on such Securities shall remain subordinated to the
extent provided in the Indenture.

                  In the case of an Event of Default, the holders of a majority
in principal amount of the Outstanding Securities by written notice to the
Trustee may rescind an acceleration and its consequences if the rescission would
not conflict with any judgment or decree and if all existing Events of Default
have been cured or waived except nonpayment of principal or interest that has
become due solely because of the acceleration.

                  Holders may not enforce the Indenture or the Securities except
as provided in the Indenture. Subject to certain limitations, holders of a
majority in principal amount of the then outstanding Securities issued under the
Indenture may direct the Trustee in its exercise of any trust or power. The
Company must furnish annually compliance certificates to the Trustee. The above
description of Events of Default and remedies is qualified by reference to, and
subject in its entirety by, the more complete description thereof contained in
the Indenture.

                  19. Amendments, Supplements and Waivers. The Indenture
permits, subject to the rights of the holders of Preferred Securities set forth
therein and in the Declaration and with certain other exceptions as therein
provided, the amendment thereof and the modification of the rights and
obligations of the Company, and the rights of the Holders of the Securities
under the Indenture, at any time, by the Company and the Trustee with the
consent of the Holders of a majority in aggregate principal amount of the
Securities at the time Outstanding. The Indenture also contains provisions
permitting the Holders of specified percentages in aggregate principal amount of
the Securities at the time Outstanding, on behalf of the Holders of all the
Securities, subject to the rights of the holders of the Preferred Securities set
forth therein and in the Declaration, to waive compliance by the Company
   120
                                                                               9


with certain provisions of the Indenture and certain past defaults under the
Indenture and their consequences. Any such consent or waiver by the Holder of
this Security shall be conclusive and binding upon such Holder and upon all
future Holders of this Security and of any Security issued upon the registration
of transfer hereof or in exchange therefor or in lieu hereof, whether or not
notation of such consent or waiver is made upon this Security. The above
description of amendments, supplements and waivers is qualified by reference to,
and subject in its entirety, by the more complete description thereof contained
in the Indenture.

                  20. Trustee Dealings with the Company. The Trustee, in its
individual or any other capacity may become the owner or pledgee of the
Securities and may otherwise deal with the Company or an Affiliate with the same
rights it would have, as if it were not a Trustee, subject to certain
limitations provided for in the Indenture and in the Trust Indenture Act.
Any Agent may do the same with like rights.

                  21. No Recourse Against Others. A director, officer, employee
or stockholder, as such, of the Company shall not have any liability for any
obligations of the Company under the Securities or the Indenture or for any
claim based on, in respect of, or by reason of such obligations or their
creation. Each Holder of the Securities by accepting a Security waives and
releases all such liability. The waiver and release are part of the
consideration for the issue of the Securities.

                  22.  Governing Law.  THE INTERNAL LAWS OF THE STATE OF NEW
YORK SHALL GOVERN THE INDENTURE AND THE SECURITIES WITHOUT REGARD TO
CONFLICT OF LAW PROVISIONS THEREOF.

                  23.  Authentication.  The Securities shall not be valid until
authenticated by the manual signature of an authorized officer of the
Trustee or an authenticating agent.

                  24. Abbreviations. Customary abbreviations may be used in the
name of a Holder or an assignee, such as: TEN COM (= tenants in common), TEN ENT
(= tenants by the entireties), JT TEN (= joint tenants with right of
survivorship and not as tenants in common), CUST (= Custodian), and U/G/M/A (=
Uniform Gifts to Minors Act).

                  The Company will furnish to any Holder of the Securities upon
written request and without charge a copy of the Indenture. Request may be made
to:

                           Union Pacific Corporation
                           1717 Main Street
                           Suite 5900
                           Dallas, Texas 75201-4605

                           Attention of:  Chief Financial Officer
   121
                                 ASSIGNMENT FORM

                To assign this Security, fill in the form below:

                (I) or (we) assign and transfer this Security to


             (Insert assignee's social security or tax I.D. number)






              (Print or type assignee's name, address and zip code)

and irrevocably appoint
agent to transfer this Security on the books of the Company.  The agent may
substitute another to act for him.


         Your Signature:
                                       (Sign exactly as your name appears on the
                                       other side of this Security)

         Date:


         Signature Guarantee:(4)

[Include the following if the Security bears a Restricted Securities Legend
- --

In connection with any transfer of any of the Securities evidenced by this
certificate, the undersigned confirms that such Securities are being:

CHECK ONE BOX BELOW

         (1)      / /      exchanged for the undersigned's own account without
                           transfer; or

         (2)      / /      transferred pursuant to and in compliance with Rule
                           144A under the Securities Act of 1933; or

         (3)      / /      transferred pursuant to and in compliance with
                           Regulation S under the Securities Act of 1933; or



- --------

   (4)(Signature must be guaranteed by an "eligible guarantor institution" that
is, a bank, stockbroker, savings and loan association or credit union meeting
the requirements of the Registrar, which requirements include membership or
participation in the Securities Transfer Agents Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.)
   122
                                                                               2



         (4)      / /      transferred pursuant to another available exemption
                           from the registration requirements of the Securities
                           Act of 1933.

         (5)      / /      transferred pursuant to an effective registration
                           statement under the Securities Act.


Unless one of the boxes is checked, the Trustee will refuse to register any of
the Securities evidenced by this certificate in the name of any person other
than the registered Holder thereof; provided, however, that if box (3) or (4) is
checked, the Trustee may require, prior to registering any such transfer of the
Securities, such legal opinions, certifications and other information as the
Company has reasonably requested to confirm that such transfer is being made
pursuant to an exemption from, or in a transaction not subject to, the
registration requirements of the Securities Act of 1933, such as the exemption
provided by Rule 144 under such Act.



                                                       _________________________
                                                                Signature

Signature Guarantee:(5)


                                                       _________________________
Signature must be guaranteed                                    Signature




- --------

   (5) (Signature must be guaranteed by an "eligible guarantor institution" that
is, a bank, stockbroker, savings and loan association or credit union meeting
the requirements of the Registrar, which requirements include membership or
participation in the Securities Transfer Agents Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.)
   123
                                                                               3


             [TO BE COMPLETED BY PURCHASER IF (2) ABOVE IS CHECKED.]


                  The undersigned represents and warrants that it is purchasing
this Security for its own account or an account with respect to which it
exercises sole investment discretion and that it and any such account is a
"qualified institutional buyer" within the meaning of Rule 144A under the
Securities Act of 1933, and is aware that the sale to it is being made in
reliance on Rule 144A and acknowledges that it has received such information
regarding the Company as the undersigned has requested pursuant to Rule 144A or
has determined not to request such information and that it is aware that the
transferor is relying upon the undersigned's foregoing representations in order
to claim the exemption from registration provided by Rule 144A.


Dated:_________________________            _____________________________________
                                           NOTICE:      [To be executed by
                                                        an executive officer]
   124
                      (TO BE ATTACHED TO GLOBAL SECURITIES)

                                   SCHEDULE A

                  The initial principal amount of this Global Security shall be
$_______. The following increases or decreases in the principal amount of this
Global Security have been made:





                       Amount of in
                       crease in Princi-
                       pal Amount of
                       this Global Secu-      Amount of de-          Principal Amount       Signature of
                       rity including         crease in Princi-      of this Global         authorized offi-
                       increase  upon         pal Amount of          Security follow-       cer of Trustee
                       exercise of over-      this Global Secu-      ing such decrease      or Securities
Date Made              allotment option       rity                   or increase            Custodian
                                                                               


   125
                               ELECTION TO CONVERT


To:  Union Pacific Corporation

                  The undersigned owner of this Security hereby irrevocably
exercises the option to convert this Security, or the portion below designated,
into Common Stock of UNION PACIFIC CORPORATION in accordance with the terms of
the Indenture referred to in this Security, and directs that the shares issuable
and deliverable upon conversion, together with any check in payment for
fractional shares, be issued in the name of and delivered to the undersigned,
unless a different name has been indicated in the assignment below. If shares
are to be issued in the name of a person other than the undersigned, the
undersigned will pay all transfer taxes payable with respect thereto.

                  Any holder, upon the exercise of its conversion rights in
accordance with the terms of the Indenture and the Security, agrees to be bound
by the terms of the Registration Rights Agreement relating to the Common Stock
issuable upon conversion of the Securities.

Date:      ,

         in whole __
                                          Portions of Security to be
                                          converted ($50 or integral
                                          multiples thereof):
                                          $______________________

                                 ____________________________________
                                 Signature (for conversion only)

                                          Please Print or Typewrite Name and
                                          Address, Including Zip Code, and
                                          Social Security or Other Identifying
                                          Number
                                 ____________________________________
                                 ____________________________________
                                 ____________________________________


                                 Signature Guarantee:(6)

                                 ____________________________________




   (6) (Signature must be guaranteed by an "eligible guarantor institution" that
is, a bank, stockbroker, savings and loan association or credit union meeting
the requirements of the Registrar, which requirements include membership or
participation in the Securities Transfer Agents Medallion Program ("STAMP") or
such other "signature guarantee program" as may be determined by the Registrar
in addition to, or in substitution for, STAMP, all in accordance with the
Securities Exchange Act of 1934, as amended.)