EXHIBIT 4.4
                                                                                
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                              ENSERCH CORPORATION



                                       TO



                       THE FIRST NATIONAL BANK OF CHICAGO

                                    TRUSTEE



                                   __________



                                   INDENTURE

                         DATED AS OF FEBRUARY 15, 1992



                             SENIOR DEBT SECURITIES



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         Reconciliation and tie between Trust Indenture Act of 1939 and
                    Indenture, dated as of February 15, 1992




TRUST INDENTURE
 ACT SECTION                                                   INDENTURE SECTION
                                                            
(S) 310 (a)(1)...............................................  609
        (a)(2)...............................................  609
        (a)(3)...............................................  Not Applicable
        (a)(4)...............................................  Not Applicable
        (b)..................................................  608, 610
(S) 311 (a)..................................................  613
        (b)..................................................  613
(S) 312 (a)..................................................  701, 702(a)
        (b)..................................................  702(b)
        (c)..................................................  702(c)
(S) 313 (a)..................................................  703(a)
        (b)..................................................  703(a)
        (c)..................................................  703(a)
        (d)..................................................  703(b)
(S) 314 (a)..................................................  704
        (a)(4)...............................................  101, 1004
        (b)..................................................  Not Applicable
        (c)(1)...............................................  102
        (c)(2)...............................................  102
        (c)(3)...............................................  Not Applicable
        (d)..................................................  Not Applicable
        (e)..................................................  102
(S) 315 (a)..................................................  601
        (b)..................................................  602
        (c)..................................................  601
        (d)..................................................  601
        (e)..................................................  514
(S) 316 (a)..................................................  101
        (a)(1)(A)............................................  502, 512
        (a)(1)(B)............................................  513
        (a)(2)...............................................  Not Applicable
        (b)..................................................  508
        (c)..................................................  104(c)
(S) 317 (a)(1)...............................................  503
        (a)(2)...............................................  504
        (b)..................................................  1003
(S) 318 (a)..................................................  107

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

 
                               TABLE OF CONTENTS

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                                                                            Page
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PARTIES...................................................................    1
RECITALS OF THE COMPANY...................................................    1

                                   ARTICLE I

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

  Section 101.    Definitions.............................................    1
     Act..................................................................    2
     Affiliate; control...................................................    2
     Authenticating Agent.................................................    2
     Board of Directors...................................................    2
     Board Resolution.....................................................    2
     Book-Entry Security..................................................    2
     Business Day.........................................................    2
     Commission...........................................................    2
     Company..............................................................    2
     Company Request; Company Order.......................................    2
     Corporate Trust Office...............................................    2
     corporation..........................................................    2
     Defaulted Interest...................................................    3
     Depository...........................................................    3
     Discharged...........................................................    3
     Event of Default.....................................................    3
     Foreign Government Securities........................................    3
     Holder...............................................................    3
     Indenture............................................................    3
     interest.............................................................    3
     Interest Payment Date................................................    3
     Judgment Currency....................................................    3
     Maturity.............................................................    4
     Officers' Certificate................................................    4
     Opinion of Counsel...................................................    4
     Original Issue Discount Security.....................................    4
     Outstanding..........................................................    4
     Paying Agent.........................................................    5
     Person...............................................................    5
     Place of Payment.....................................................    5
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NOTE:   This table of contents shall not, for any purpose, be deemed to be 
        part of the Indenture.


                                       i

 
 
 
                                                                            Page
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     Predecessor Security.................................................    5
     Redemption Date......................................................    5
     Redemption Price.....................................................    5
     Regular Record Date..................................................    5
     Required Currency....................................................    5
     Securities...........................................................    5
     Security Register....................................................    5
     Special Record Date..................................................    5
     Stated Maturity......................................................    6
     Subsidiary...........................................................    6
     Trustee..............................................................    6
     Trust Indenture Act..................................................    6
     U.S. Government Securities...........................................    6
     Vice President.......................................................    6
     Voting Stock.........................................................    6
  Section 102.    Compliance Certificates and Opinions....................    6
  Section 103.    Form of Documents Delivered to Trustee..................    7
  Section 104.    Acts of Holders; Record Dates...........................    7
  Section 105.    Notices, Etc., to Trustee and Company...................    9
  Section 106.    Notice to Holders; Waiver...............................   10
  Section 107.    Conflict with Trust Indenture Act.......................   10
  Section 108.    Effect of Headings and Table of Contents................   10
  Section 109.    Successors and Assigns..................................   10
  Section 110.    Separability Clause.....................................   10
  Section 111.    Benefits of Indenture...................................   11
  Section 112.    Governing Law...........................................   11
  Section 113.    Legal Holidays..........................................   11
  Section 114.    Currency Conversion.....................................   11

                                   ARTICLE II

                                 SECURITY FORMS

  Section 201.    Forms Generally.........................................   12
  Section 202.    Form of Trustee's Certificate of Authentication.........   12
  Section 203.    Form of Legend for Book-Entry Securities................   13

                                  ARTICLE III

                                 THE SECURITIES

  Section 301.    Amount Unlimited; Issuable in Series....................   13
  Section 302.    Denominations...........................................   15
  Section 303.    Execution, Authentication, Delivery and Dating..........   15
  Section 304.    Temporary Securities....................................   17
 

- ------------
NOTE:   This table of contents shall not, for any purpose, be deemed to be 
        part of the Indenture.

                                      ii

 
 
 
                                                                            Page
                                                                            ----
                                                                         
  Section 305.    Registration, Registration of Transfer and Exchange.....   17
  Section 306.    Mutilated, Destroyed, Lost and Stolen Securities........   18
  Section 307.    Payment of Interest; Interest Rights Preserved..........   19
  Section 308.    Persons Deemed Owners...................................   20
  Section 309.    Cancellation............................................   20
  Section 310.    Computation of Interest.................................   21

                                   ARTICLE IV

                           SATISFACTION AND DISCHARGE
 
  Section 401.    Satisfaction and Discharge of Indenture.................   21
  Section 402.    Application of Trust Money..............................   22
  Section 403.    Satisfaction, Discharge and Defeasance of Securities 
                  of any Series...........................................   22
  Section 404.    Covenant Defeasance of Securities of any Series.........   23
  Section 405.    Reinstatement...........................................   24

                                   ARTICLE V

                                    REMEDIES

  Section 501.    Events of Default.......................................   25
  Section 502.    Acceleration of Maturity; Rescission and Annulment......   26
  Section 503.    Collection of Indebtedness and Suits for Enforcement 
                  by Trustee..............................................   27
  Section 504.    Trustee May File Proofs of Claim........................   28
  Section 505.    Trustee May Enforce Claims Without Possession of 
                  Securities..............................................   28
  Section 506.    Application of Money Collected..........................   28
  Section 507.    Limitation on Suits.....................................   29
  Section 508.    Unconditional Right of Holders to Receive Principal, 
                  Premium and Interest....................................   29
  Section 509.    Restoration of Rights and Remedies......................   29
  Section 510.    Rights and Remedies Cumulative..........................   30
  Section 511.    Delay or Omission Not Waiver............................   30
  Section 512.    Control by Holders......................................   30
  Section 513.    Waiver of Past Defaults.................................   30
  Section 514.    Undertaking for Costs...................................   31
  Section 515.    Waiver of Stay or Extension Laws........................   31

                                   ARTICLE VI

                                  THE TRUSTEE
 
  Section 601.    Certain Duties and Responsibilities.....................   31
  Section 602.    Notice of Defaults......................................   31
  Section 603.    Certain Rights of Trustee...............................   32
  Section 604.    Not Responsible for Recitals or Issuance of Securities..   33
 

- ------------
NOTE:   This table of contents shall not, for any purpose, be deemed to be 
        part of the Indenture.

                                      iii

 
 
 
                                                                            Page
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  Section 605.    May Hold Securities.....................................   33
  Section 606.    Money Held in Trust.....................................   33
  Section 607.    Compensation and Reimbursement..........................   33
  Section 608.    Disqualification; Conflicting Interests.................   34
  Section 609.    Corporate Trustee Required; Eligibility.................   34
  Section 610.    Resignation and Removal; Appointment of Successor.......   34
  Section 611.    Acceptance of Appointment by Successor..................   36
  Section 612.    Merger, Conversion, Consolidation or Succession to 
                  Business................................................   37
  Section 613.    Preferential Collection of Claims Against Company.......   37
  Section 614.    Appointment of Authenticating Agent.....................   37

                                  ARTICLE VII

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY
 
  Section 701.    Company to Furnish Trustee Names and Addresses of 
                  Holders.................................................   39
  Section 702.    Preservation of Information; Communications to Holders..   39
  Section 703.    Reports by Trustee......................................   39
  Section 704.    Reports by Company......................................   40

                                  ARTICLE VIII

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

  Section 801.    Company May Consolidate, Etc., Only on Certain Terms....   40
  Section 802.    Successor Substituted...................................   40

                                   ARTICLE IX

                            SUPPLEMENTAL INDENTURES
 
  Section 901.    Supplemental Indentures Without Consent of Holders......   41
  Section 902.    Supplemental Indentures with Consent of Holders.........   42
  Section 903.    Execution of Supplemental Indentures....................   43
  Section 904.    Effect of Supplemental Indentures.......................   43
  Section 905.    Conformity with Trust Indenture Act.....................   43
  Section 906.    Reference in Securities to Supplemental Indentures......   43

                                   ARTICLE X

                                   COVENANTS
 
  Section 1001.   Payment of Principal, Premium and Interest..............   43
  Section 1002.   Maintenance of Office or Agency.........................   44
  Section 1003.   Money for Securities Payments to Be Held in Trust.......   44
 


                                      iv

 
 
 
                                                                            Page
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  Section 1004.   Statement by Officers as to Default.....................   45
  Section 1005.   Existence...............................................   45
  Section 1006.   Limitation on Liens.....................................   45
  Section 1007.   Waiver of Certain Covenants.............................   47

                                   ARTICLE XI

                            REDEMPTION OF SECURITIES
 
  Section 1101.   Applicability of Article................................   47
  Section 1102.   Election to Redeem; Notice to Trustee...................   48
  Section 1103.   Selection by Trustee of Securities to Be Redeemed.......   48
  Section 1104.   Notice of Redemption....................................   48
  Section 1105.   Deposit of Redemption Price.............................   49
  Section 1106.   Securities Payable on Redemption Date...................   49
  Section 1107.   Securities Redeemed in Part.............................   50

                                  ARTICLE XII

                                 SINKING FUNDS
 
  Section 1201.   Applicability of Article................................   50
  Section 1202.   Satisfaction of Sinking Fund Payments with Securities...   50
  Section 1203.   Redemption of Securities for Sinking Fund...............   51
 
TESTIMONIUM............................................................... 
SIGNATURES AND SEALS......................................................
ACKNOWLEDGMENTS...........................................................

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NOTE:   This table of contents shall not, for any purpose, be deemed to be 
        part of the Indenture.

                                       v

 
         INDENTURE, dated as of February 15, 1992, between ENSERCH Corporation,
a corporation duly organized and existing under the laws of the State of Texas
(herein called the "Company"), having its principal office at 300 South St.
Paul, Dallas, Texas  75201, and The First National Bank of Chicago, a national
banking association duly organized and existing under the laws of the United
States, as Trustee (herein called the "Trustee").

                            RECITALS OF THE COMPANY

         The Company has duly authorized the execution and delivery of this
Indenture to provide for the issuance from time to time of its unsecured
debentures, notes or other evidences of indebtedness (herein called the
"Securities"), to be issued in one or more series as in this Indenture provided.

         All things necessary to make this Indenture a valid agreement of the
Company, in accordance with 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 thereof, it is mutually agreed, for the equal and
proportionate benefit of all Holders of the Securities or of series thereof, as
follows:

                                   ARTICLE I

                        DEFINITIONS AND OTHER PROVISIONS
                             OF GENERAL APPLICATION

         Section 101. 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 104.

         "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;
and the terms "controlling" and "controlled" have meanings correlative to the
foregoing.

         "Authenticating Agent" means any Person authorized by the Trustee
pursuant to Section 614 to act on behalf of the Trustee to authenticate
Securities of one or more series.

         "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.

         "Book-Entry Security" means a Security bearing the legend specified in
Section 203, evidencing all or part of the Securities of a series and registered
in the name of the Depository or its nominee.

         "Business Day", when used with respect to any Place of Payment, means
each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which
banking institutions in that Place of Payment are authorized or obligated by law
to close.

         "Commission" means the Securities and Exchange Commission, as from time
to time constituted, created under the Securities Exchange Act of 1934, 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.

         "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.

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

         "Corporate Trust Office" means the principal office of the Trustee in
The City of Chicago (or any other city designated by the Trustee) at which at
any particular time its corporate trust business shall be principally
administered.

         "corporation" means corporations, associations, joint stock companies
and business trusts.

                                       2

 
         "Defaulted Interest" has the meaning specified in Section 307.

         "Depository" means, with respect to the Securities of any series
issuable or issued in whole or in part in the form of one or more Book-Entry
Securities, the clearing agency registered under the Securities Exchange Act of
1934, as amended, specified for that purpose as contemplated by Section 301.

         "Discharged" has the meaning specified in Section 403.

         "Event of Default" has the meaning specified in Section 501.

         "Foreign Government Securities" as used in Section 403 means, with
respect to Securities of any series that are denominated in a currency other
than United States dollars, securities that are (i) direct obligations of the
government that issued such currency for the payment of which obligations its
full faith and credit is pledged or (ii) obligations of a Person controlled or
supervised by and acting as an agency or instrumentality of such government, the
timely payment of which is unconditionally guaranteed as a full faith and credit
obligation by such government, which, in either case under clauses (i) or (ii),
are not callable or redeemable at the option of the issuer thereof.

         "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.
The term "Indenture" shall also include the terms of particular series of
Securities established as contemplated by Section 301 provided, however, that,
if at any time more than one Person is acting as Trustee under this instrument
due to the appointment of one or more separate Trustees for any one or more
separate series of Securities pursuant to Section 610(e), "Indenture" shall
mean, with respect to such series of Securities for which any such Person is
Trustee, 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 and shall include the terms of
particular series of Securities for which such Person is Trustee established as
contemplated by Section 301, exclusive, however, of any provisions or terms
which relate solely to other series of Securities for which such Person is not
Trustee, regardless of when such terms or provisions were adopted, and exclusive
of any provisions or terms adopted by means of one or more indentures
supplemental hereto executed and delivered after such Person had become such
Trustee but to which such Person, as such Trustee, was not a party.

         "interest", when used with respect to an Original Issue Discount
Security which by its terms bears interest only after Maturity, means interest
payable after Maturity.

         "Interest Payment Date", when used with respect to any Security, means
the Stated Maturity of an installment of interest on such Security.

         "Judgment Currency" has the meaning specified in Section 114.

                                       3

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

         "Officers' Certificate" means a certificate signed by the Chairman, 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.

         "Opinion of Counsel" means a written opinion of counsel, who may be
counsel to or an employee of the Company.

         "Original Issue Discount Security" means any Security which provides
for an amount less than the principal amount thereof to be due and payable upon
a declaration of acceleration of the Maturity thereof pursuant to Section 502.

         "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 306 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;

provided, however, that in determining whether the Holders of the requisite
principal amount of the Outstanding Securities have given any request, demand,
authorization, direction, notice, consent or waiver hereunder, (i) the principal
amount of an Original Issue Discount Security that shall be deemed to be
Outstanding shall be the amount of the principal thereof that would be due and
payable as of the date of such determination upon acceleration of the Maturity
thereof pursuant to Section 502, (ii) the principal amount of a Security
denominated in one or more foreign currencies or currency units shall be the
U.S. dollar equivalent, determined in the manner provided as contemplated by
Section 114 and Section 301 on the date of original issuance of such Security,
of the principal amount (or, in the case of an Original Issue Discount Security,
the U.S. dollar equivalent on the date of original issuance of such Security of
the amount determined as provided in (i) above) of such Security, and (iii)
Securities owned by the Company or any other obligor upon the Securities or any
Affiliate of the Company or of such other obligor shall be disregarded and
deemed not to be Outstanding, except that, in determining whether the Trustee
shall be protected in relying upon any such request, demand, authorization,
direction, notice,

                                       4

 
consent or waiver, only Securities which the Trustee knows to be so owned shall
be so disregarded.  Securities so owned which have been pledged in good faith
may be regarded as Outstanding if the pledgee establishes to the satisfaction of
the Trustee the pledgee's right so to act with respect to such Securities and
that the pledgee is not the Company or any other obligor upon the Securities or
any Affiliate of the Company or of such other obligor.

         "Paying Agent" means any Person authorized by the Company to pay the
principal of (and premium, if any) or interest on any Securities on behalf of
the Company.

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

         "Place of Payment", when used with respect to the Securities of any
series, means the place or places where the principal of and any premium and
interest on the Securities of that series are payable as specified as
contemplated by Section 301.

         "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 306 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.

         "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.

         "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.

         "Regular Record Date" for the interest payable on any Interest Payment
Date on the Securities of any series means the date specified for that purpose
as contemplated by Section 301.

         "Required Currency" has the meaning specified in Section 114.

         "Securities" has the meaning stated in the first recital of this
Indenture and more particularly means any Securities authenticated and delivered
under this Indenture provided, however, that if at any time there is more than
one Person acting as Trustee under this Indenture, "Securities" with respect to
the Indenture as to which such Person is Trustee shall have the meaning stated
in the first recital of this Indenture and shall more particularly mean
Securities authenticated and delivered under this Indenture, exclusive, however,
of Securities of any series as to which such Person is not Trustee .

         "Security Register" and "Security Registrar" have the respective
meanings specified in Section 305.

         "Special Record Date" for the payment of any Defaulted Interest means a
date fixed by the Trustee pursuant to Section 307.

                                       5

 
         "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 of such Security or
such installment of principal or interest is due and payable.

         "Subsidiary" means a corporation more than 50% of the outstanding
Voting Stock of which is owned, directly or indirectly, by the Company or by one
or more other Subsidiaries, or by the Company and one or more other
Subsidiaries.

         "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 or include each Person who is then a Trustee hereunder, and
if at any time there is more than one such Person, "Trustee" as used with
respect to the Securities of any series shall mean the Trustee with respect to
Securities of that series.

         "Trust Indenture Act" means the Trust Indenture Act of 1939 as in force
at the date as of which this instrument was executed except as provided in
Section 905; provided, however, that in the event the 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.

         "U.S. Government Securities" as used in Section 403 means securities
that are (i) direct obligations of the United States of America for the payment
of which its full faith and credit is pledged or (ii) obligations of a Person
controlled or supervised by and acting as an agency or instrumentality of the
United States of America, the timely payment of which is unconditionally
guaranteed as a full faith and credit obligation by the United States of
America, which, in either case under clauses (i) or (ii) are not callable or
redeemable at the option of the issuer thereof, and shall also include a
depository receipt issued by a bank or trust company as custodian with respect
to any such U.S. Government Security or a specific payment of interest on or
principal of any such U.S. Government Security held by such custodian for the
amount of the holder of a depository receipt, provided that (except as required
by law) such custodian is not authorized to make any deduction from the amount
payable to the holder of such depository receipt from any amount received by the
custodian in respect of the U.S. Government Security evidenced by such
depository receipt.

         "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" means stock which ordinarily has voting power for the
election of directors, whether at all times or only so long as no senior class
of stock has such voting power by reason of any contingency.

         Section 102. 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.  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
requirements of the Trust Indenture Act and any other requirements set forth in
this Indenture.

                                       6

 
         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;

         (3)  a statement that, in the opinion of each such individual, he has
     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 103. 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 104. Acts of Holders; Record Dates.

         (a)  Any request, demand, authorization, direction, notice, consent,
waiver or other action provided by this Indenture to be given or taken by
Holders may be embodied in and evidenced by one or more instruments of
substantially similar tenor signed by such Holders in person or by agent duly
appointed in writing; and, except as herein otherwise expressly provided, such
action shall become effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required, to the Company.  Such
instrument or instruments (and the action embodied therein

                                       7

 
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 601) conclusive in favor of
the Trustee and the Company, if made in the manner provided in this Section.

         Without limiting the generality of the foregoing, a Holder, including a
Depository that is a Holder of a Book-Entry Security, may make, give or take, by
a proxy, or proxies, duly appointed in writing, any request, demand,
authorization, direction, notice, consent, waiver or other action provided in
this Indenture to be made, given or taken by Holders, and a Depository that is a
Holder of a Book-Entry Security may provide its proxy or proxies to the
beneficial owners of interest in any such Book-Entry Security.

         (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 deems sufficient.

         (c)   The Company may, in the circumstances permitted by the Trust
Indenture Act, set any day as the record date for the purpose of determining the
Holders of Outstanding Securities of any series entitled to give or take any
request, demand, authorization, direction, notice, consent, waiver or other
action, provided or permitted by this Indenture to be given or taken by Holders
of Securities of such series.

         With regard to any record date set pursuant to this paragraph, the
Holders of Outstanding Securities of the relevant series on such record date (or
their duly appointed agents), and only such Persons, shall be entitled to give
or take relevant action, whether or not such Holders remain Holders after such
record date.  With regard to any action that may be given or taken hereunder
only by Holders of a requisite principal amount of Outstanding Securities of any
series (or their duly appointed agents) and for which a record date is set
pursuant to this paragraph, the Company may, at its option, set an expiration
date after which no such action purported to be given or taken by any Holder
shall be effective hereunder unless given or taken on or prior to such
expiration date by Holders of the requisite principal amount of Outstanding
Securities of such series on such record date (or their duly appointed agents).
On or prior to any expiration date set pursuant to this paragraph, the Company
may, on one or more occasions at its option, extend such date to any later date.
Nothing in this paragraph shall prevent any Holder (or any duly appointed agent
thereof) from giving or taking, at any time, contrary to or different from, any
action given or taken, or purported to have been given or taken, hereunder by a
Holder on or prior to such date, in which event the Company may set a record
date in respect thereof pursuant to this paragraph.  Notwithstanding the
foregoing or the Trust Indenture Act, the Company shall not set a record date
for, and the provisions of this paragraph shall not apply with respect to, any
action to be given or taken by Holders pursuant to Section 501, 502 or 512.

         Upon receipt by the Trustee of any notice of default pursuant to
Section 501, any declaration of acceleration, or any rescission and annulment of
any such declaration, pursuant to Section 502 or of any direction with respect
in accordance with Section 512, any notice of default pursuant to

                                       8

 
Section 501, with respect to Securities of any series, a record date shall
automatically and without any other action by any Person be set for the purpose
of determining the Holders of Outstanding Securities of such series entitled to
join in such notice of default, declaration, or rescission and annulment or
direction of default, as the case may be, which record date shall be the close
of business on the day the Trustee receives such notice of default, declaration
or rescission and annulment or direction as the case may be.  The Holders of
Outstanding Securities of such series on such record date (or their duly
appointed agent), and only such Persons, shall be entitled to join in such
notice of default, declaration, or rescission and annulment or direction as the
case may be, whether or not such Holders remain Holders after such record date;
provided that, unless such notice of default, declaration, or rescission and
annulment, as the case may be, shall have become effective by virtue of Holders
of the requisite principal amount of Outstanding Securities of such series on
such record date (or their duly appointed agents) having joined therein on or
prior to the 90th day after such record date, such notice of default,
declaration, or rescission and annulment or direction, as the case may be, shall
automatically and without any action by any Person be canceled and of no further
effect.  Nothing in this paragraph shall prevent a Holder (or a duly appointed
agent thereof) from giving, before or after the expiration of such 90-day
period, notice of default, a declaration of acceleration, or a rescission and
annulment or direction of any such notice of default, declaration, contrary to
or different from, or, after the expiration of such period, identical to, a
notice of default, declaration or rescission and annulment or direction, as the
case may be, that has been canceled pursuant to the proviso to the preceding
sentence, in which event a new record date in respect thereof shall be set
pursuant to this paragraph.

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

         (e)   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.

         Section 105. Notices, Etc., to Trustee and 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 or with the Trustee at its Corporate Trust Office: One First National
     Plaza, Suite 0126, Chicago, Illinois 60670 for U.S. mail, or One North
     State Street, Ninth Floor, Chicago, Illinois 60602 for deliveries,
     Attention: Corporate Trust Administration, or

         (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 it at the address of its principal office specified in the
     first paragraph of this instrument to the attention of the Treasurer or at
     any other address previously furnished in writing to the Trustee by the
     Company.

                                       9

 
         Section 106. 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 his 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
notice with respect to other Holders.  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 107. 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 108. 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 109. 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 110. 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.

                                      10

 
         Section 111. 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 their successors
hereunder and the Holders, any benefit or any legal or equitable right, remedy
or claim under this Indenture.

         Section 112. Governing Law.

         THIS INDENTURE AND THE SECURITIES SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF TEXAS.

         Section 113. Legal Holidays.

         In any case where any Interest Payment Date, Redemption Date or Stated
Maturity of any Security shall not be a Business Day at any Place of Payment,
then (notwithstanding any other provision of this Indenture or of the Securities
(other than a provision of the Securities of any series which specifically
states that such provision shall apply in lieu of this Section)) payment of
interest or principal (and premium, if any) need not be made at such Place of
Payment on such date, but may be made on the next succeeding Business Day at
such Place of Payment with the same force and effect as if made on the Interest
Payment Date or Redemption Date, or at the Stated Maturity, 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.

         Section 114. Currency Conversion.

         Except as contemplated by Section 301 or as specifically provided in
Securities of a series, the Company agrees, to the fullest extent that it may
effectively do so under applicable law, that (a) if for the purpose of obtaining
judgment in any court, it is necessary to convert the sum due in respect of the
principal of, or premium or interest, if any, on the Securities of any series
(the "Required Currency") into a currency in which a judgment will be rendered
(the "Judgment Currency"), the rate of exchange used shall be the rate at which
in accordance with normal banking procedures the Trustee could purchase in the
City of New York the Required Currency with the Judgment Currency on the New
York Banking Day preceding that on which final unappealable judgment is given
and (b) its obligations under this Indenture to make payments in the Required
Currency (i) shall not be discharged or satisfied by any tender, or any recovery
pursuant to any judgment (whether or not entered in accordance with subsection
(a)), in any currency other than the Required Currency, except to the extent
that such tender or recovery shall result in the actual receipt, by the payee,
of the full amount of the Required Currency expressed to be payable in respect
of such payments (ii) shall be enforceable as an alternative or additional cause
of action for the purpose of recovering in the Required Currency the amount, if
any, by which such actual receipt shall fall short of the full amount of the
Required Currency so expressed to be payable and (iii) shall not be affected by
judgment being obtained for any other sum due under this Indenture.  For
purposes of the foregoing, "New York Banking Day" means any day except a
Saturday, Sunday or a legal holiday in the City of New York or a day on which
banking institutions in the City of New York are authorized or required by law
or executive order to close.

                                      11

 
                                   ARTICLE II

                                 SECURITY FORMS

         Section 201. Forms Generally.

         The Securities of each series shall be in substantially the form as
shall be established by or pursuant to a Board Resolution or in one or more
indentures supplemental hereto, in each case with such appropriate insertions,
omissions, substitutions and other variations as are required or permitted by
this Indenture, and may have such letters, numbers or other marks of
identification and such legends or endorsements placed thereon as may be
required to comply with the rules of any securities exchange or as may,
consistently herewith, be determined by the officers executing such Securities,
as evidenced by their execution of the Securities. If the form of Securities of
any series is established by action taken pursuant to a Board Resolution, a copy
of an appropriate record of such action shall be certified by the Secretary or
an Assistant Secretary of the Company and delivered to the Trustee at or prior
to the delivery of the Company Order contemplated by Section 303 for the
authentication and delivery of such Securities.

         The definitive Securities shall be printed, lithographed or engraved on
steel engraved borders or may be produced in any other manner, all as determined
by the officers executing such Securities, as evidenced by their execution of
such Securities.

         Section 202. Form of Trustee's Certificate of Authentication.

         The Trustee's certificates of authentication shall be in substantially
the following form:

         This is one of the Securities of the series designated therein referred
to in the within mentioned Indenture.

                                      THE FIRST NATIONAL BANK
                                      OF CHICAGO,
                                      as Trustee


                                      By
                                         ____________________________
                                               Authorized Officer

                                      12

 
          Section 203. Form of Legend for Book-Entry Securities.

          Any Book-Entry Security authenticated and delivered hereunder shall
bear a legend in substantially the following form:

          "This Security is a Book-Entry Security within the meaning of the
          Indenture hereinafter referred to and is registered in the name of a
          Depository or a nominee of a Depository.  This Security is
          exchangeable for Securities registered in the name of a Person other
          than the Depository 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 Depository to a
          nominee of the Depository or by a nominee of the Depository to the
          Depository or another nominee of the Depository) may be registered
          except in such limited circumstances."

                                  ARTICLE III

                                 THE SECURITIES

          Section 301. Amount Unlimited; Issuable in Series.

          The aggregate principal amount of Securities which may be
authenticated and delivered under this Indenture is unlimited.

          The Securities may be issued in one or more series.  There shall be
established in or pursuant to a Board Resolution and, subject to Section 303,
set forth, or determined in the manner provided, in an Officers' Certificate, or
established in one or more indentures supplemental hereto, prior to the issuance
of Securities of any series,

          (1)  the title of the Securities of the series (which shall
     distinguish the Securities of the series from all other Securities and from
     Securities of any other series);

          (2)  any limit upon the aggregate principal amount of the Securities
     of the series which may be authenticated and delivered under this Indenture
     (except for Securities authenticated and delivered upon registration of
     transfer of, or in exchange for, or in lieu of, other Securities of the
     series pursuant to Section 304, 305, 306, 906 or 1107 and except for any
     Securities which, pursuant to Section 303, are deemed never to have been
     authenticated and delivered hereunder);

          (3)  the Person to whom any interest on a Security of the series shall
     be payable, if other than 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 for such interest;

          (4)  the date or dates on which the principal of the Securities of the
     series is payable;

          (5)  the rate or rates at which the Securities of the series shall
     bear interest, if any, the date or dates from which such interest shall
     accrue, the Interest Payment Dates

                                      13

 
     on which any such interest shall be payable and the Regular Record Date for
     any interest payable on any Interest Payment Date;

          (6)  the place or places where the principal of (and premium, if any)
     and interest on Securities of the series shall be payable;

          (7)  the period or periods within which, the price or prices at which
     and the terms and conditions upon which Securities of the series may be
     redeemed, in whole or in part, at the option of the Company;

          (8)  the obligation, if any, of the Company to redeem or purchase
     Securities of the series pursuant to any sinking fund or analogous
     provisions or at the option of a Holder thereof and the period or periods
     within which, the price or prices at which and the terms and conditions
     upon which Securities of the series shall be redeemed or purchased, in
     whole or in part, pursuant to such obligation;

          (9)  if other than denominations of $1,000 and any integral multiple
     thereof, the denominations in which Securities of the series shall be
     issuable;

          (10)  the currency, currencies or currency units in which payment of
     the principal of and any premium and interest on any Securities of the
     series shall be payable if other than the currency of the United States of
     America and, if other than as set forth in Section 114, the manner of
     determining the equivalent thereof in the currency of the United States of
     America for purposes of the definition of "Outstanding" in Section 101;

          (11)  if the amount of payments of principal of or any premium or
     interest on any Securities of the series may be determined with reference
     to an index, the manner in which such amounts shall be determined;

          (12)  if the principal of or any premium or interest on any Securities
     of the series is to be payable, at the election of the Company or a Holder
     thereof, in one or more currencies or currency units other than that or
     those in which the Securities are stated to be payable, the  currency,
     currencies or currency units in which payment of the principal of and any
     premium and interest on Securities of such series as to which such election
     is made shall be payable, and the periods within which and the terms and
     conditions upon which such election is to be made;

          (13)  whether the Securities of the series shall be issued in whole or
     in part in the form of one or more Book-Entry Securities and, in such case,
     the Depository or Depositories with respect to such Book-Entry Security or
     Securities and the circumstances under which any such Book-Entry Security
     may be registered for transfer or exchange, or authenticated and delivered,
     in the name of a Person other than such Depository or its nominee, if other
     than as set forth in Section 305;

          (14)  if other than the principal amount thereof, the portion of the
     principal amount of Securities of the series which shall be payable upon
     declaration of acceleration of the Maturity thereof pursuant to Section
     502;

                                      14

 
          (15)  the exchange of Securities of the series, at the option of the
     Holders thereof, for other Securities of the same series of the same
     aggregate principal amount or of a different authorized kind or different
     authorized denomination or denominations;

          (16)  any modification, amendment or addition to the covenants of the
     Company set forth in Article VII or Article X of this Indenture with
     respect to the Securities of the series;

          (17)  any Events of Default with respect to Securities of the series,
     if not otherwise set forth herein; and

          (18)  any other terms of the series (which terms shall not be
     inconsistent with the provisions of this Indenture, except as permitted by
     Section 901(5)).

          All Securities of any one series shall be substantially identical
except as to denomination and except as may otherwise be provided in or pursuant
to the Board Resolution referred to above and (subject to Section 303) set
forth, or determined in the manner provided, in the Officers' Certificate
referred to above or in any such indenture supplemental hereto.

          If any of the terms of the series are established by action taken
pursuant to a Board Resolution, a copy of an appropriate record of such action
shall be certified by the Secretary or Assistant Secretary of the Company and
delivered to the Trustee at or prior to the delivery of the Officers'
Certificate setting forth the terms of the series.

          Section 302. Denominations.

          The Securities of each series shall be issuable in registered form
without coupons in such denominations as shall be specified as contemplated by
Section 301. In the absence of any such provisions with respect to the
Securities of any series, the Securities of such series shall be issuable in
denominations of $1,000 and any integral multiple thereof.

          Section 303. Execution, Authentication, Delivery and Dating.

          The Securities shall be executed on behalf of the Company by its
Chairman, its President or one of its Vice Presidents and the Treasurer or an
Assistant Treasurer, under its corporate seal reproduced thereon.  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 of any series 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 the Company Order shall authenticate and deliver such Securities.  If the
form or terms of the Securities of the series have been established in or
pursuant to one or more Board

                                      15

 
Resolutions as permitted by Sections 201 and 301, in authenticating such
Securities, and accepting the additional responsibilities under this Indenture
in relation to such Securities, the Trustee shall be entitled to receive, and
(subject to Section 601) shall be fully protected in relying upon, an Opinion of
Counsel stating,

               (a)  if the form of such Securities has been established by or
          pursuant to Board Resolution as permitted by Section 201, that such
          form has been established in conformity with the provisions of this
          Indenture;

               (b)  if the terms of such Securities have been established by or
          pursuant to Board Resolution as permitted by Section 301, that such
          terms have been established in conformity with the provisions of this
          Indenture; and

               (c)  that such Securities, when authenticated and delivered by
          the Trustee and issued by the Company in the manner and subject to any
          conditions specified in such Opinion of Counsel, will constitute valid
          and legally binding obligations of the Company enforceable in
          accordance with their terms, subject to bankruptcy, insolvency,
          fraudulent transfer, reorganization, moratorium and other similar laws
          of general applicabili-ty relating to or affecting creditors' rights
          and to general equity principles.

If such form or terms have been so established, the Trustee shall not be
required to authenticate such Securities if the issue of such Securities
pursuant to this Indenture will affect the Trustee's own rights, duties or
immunities under the Securities and this Indenture or otherwise in a manner
which is not reasonably acceptable to the Trustee.

          Notwithstanding the provisions of Section 301 or this Section 303, if
all Securities of a series are not to be originally issued at one time, it shall
not be necessary to deliver the Officers' Certificate otherwise required
pursuant to Section 301 or the Company Order and Opinion of Counsel otherwise
required pursuant to such preceding paragraph at or prior to the time of
authentication of each Security of such series if such documents are delivered
at or prior to the authentication upon original issuance of the first Security
of such series to be issued.

          Each Security shall be dated the date of its authentication.

          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.  Notwithstanding the
foregoing, if any Security shall have been authenticated and delivered hereunder
but never issued and sold by the Company, and the Company shall deliver such
Security to the Trustee for cancellation as provided in Section 309, for all
purposes of this Indenture such Security shall be deemed never to have been
authenticated and delivered hereunder and shall never be entitled to the
benefits of this Indenture.

                                      16

 
          Section 304. Temporary Securities.

          Pending the preparation of definitive Securities of any series, the
Company may execute, and upon Company Order the Trustee shall authenticate and
deliver, temporary Securities which are printed, lithographed, typewritten,
mimeographed 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 of any series are issued, the Company will
cause definitive Securities of that series to be prepared without unreasonable
delay.  After the preparation of definitive Securities of such series, the
temporary Securities of such series shall be exchangeable for definitive
Securities of such series upon surrender of the temporary Securities of such
series at the office or agency of the Company in a Place of Payment for that
series, without charge to the Holder.  Upon surrender for cancellation of any
one or more temporary Securities of any series the Company shall execute and the
Trustee shall authenticate and deliver in exchange therefor one or more
definitive Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor.  Until so exchanged the temporary
Securities of any series shall in all respects be entitled to the same benefits
under this Indenture as definitive Securities of such series and tenor.

          Section 305. Registration, Registration of Transfer and Exchange.

          The Company shall cause to be kept at the Corporate Trust Office of
the Trustee an office or agency to be maintained by the Company in accordance
with Section 1002 a register (the register maintained in such office and in any
other office or agency of the Company in a Place of Payment 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 of any
series at the office or agency in a Place of Payment for that series, 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
the same series, of any authorized denominations and of a like aggregate
principal amount and tenor.

          At the option of the Holder, Securities of any series may be exchanged
for other Securities of the same series, of any authorized denominations and of
a like aggregate principal amount and tenor, 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 deliver, 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

                                      17

 
instrument of transfer in form satisfactory 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 304, 906 or 1107 not involving any transfer.

          The Company shall not be required (i) to issue, register the transfer
of or exchange Securities of any series during a period beginning at the opening
of business 15 days before the day of the mailing of a notice of redemption of
Securities of that series selected for redemption under Section 1103 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.

          Notwithstanding the foregoing and except as otherwise specified or
contemplated by Section 301, any Book-Entry Security shall be exchangeable
pursuant to this Section 305 or Sections 304, 906 and 1107 for Securities
registered in the name of, and a transfer of a Book-Entry Security of any series
may be registered to, any Person other than the Depository for such Security or
its nominee only if (i) such Depository notifies the Company that it is
unwilling or unable to continue as Depository for such Book-Entry Security or if
at any time such Depository ceases to be a clearing agency registered under the
Securities Exchange Act of 1934, as amended, (ii) the Company executes and
delivers to the Trustee a Company Order that such Book-Entry Security shall be
so exchangeable and the transfer thereof so registerable or (iii) there shall
have occurred and be continuing an Event of Default with respect to the
Securities of such series.  Upon the occurrence in respect of any Book-Entry
Security of any series of any one or more of the conditions specified in clauses
(i), (ii) or (iii) of the preceding sentence or such other conditions as may be
specified as contemplated by Section 301 for such series, such Book-Entry
Security may be exchanged for Securities registered in the names of, and the
transfer of such Book-Entry Security may be registered to, such Persons
(including Persons other than the Depository with respect to such series and its
nominees) as such Depository shall direct.  Notwithstanding any other provision
of this Indenture, any Security authenticated and delivered upon registration of
transfer of, or in exchange for, or in lieu of, any Book-Entry Security shall
also be a Book-Entry Security and shall bear the legend specified in Section 203
except for any Security which is not a Book-Entry Security authenticated and
delivered in exchange for, or upon registration of transfer of, a Book-Entry
Security pursuant to the preceding sentence.

          Section 306. 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 deliver in exchange
therefor a new Security of the same series and 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 upon its request the Trustee shall
authenticate and deliver, in lieu of any such

                                      18

 
destroyed, lost or stolen Security, a new Security of the same series and 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 of any series 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 of that series 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 307. Payment of Interest; Interest Rights Preserved.

          Except as otherwise provided as contemplated by Section 301 with
respect to any series of Securities, interest on any Security which is payable,
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
for such interest.

          Any interest on any Security of any series 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 of such series (or their
     respective Predecessor Securities) are registered at the close of business
     on a Special Record Date 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 of such series 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 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

                                      19

 
     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 of Securities of such series at its 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 been so mailed, such
     Defaulted Interest shall be paid to the Persons in whose names the
     Securities of such series (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 on the
     Securities of any series in any other lawful manner not inconsistent with
     the requirements of any securities exchange on which such Securities may be
     listed, and upon such notice as may be required by such exchange, 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.

          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, which were carried by such other Security.

          Section 308. Persons Deemed Owners.

          Prior to due presentment of a 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 such Security is registered as the owner of such
Security for the purpose of receiving payment of principal of (and premium, if
any) and (subject to Section 307) any 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.

          Section 309. Cancellation.

          All Securities surrendered for payment, redemption, registration of
transfer or exchange or for credit against any sinking fund payment shall, if
surrendered to any Person other than the Trustee, be delivered to the Trustee
and, if not already canceled, shall be promptly canceled by it.  The Company may
at any time deliver to the Trustee for cancellation any Securities previously
authenticated and delivered hereunder which the Company may have acquired in any
manner whatsoever, and may deliver to the Trustee (or to any other Person for
delivery to the Trustee) for cancellation any Securities previously
authenticated hereunder which the Company has not issued and sold, 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 destroyed
unless otherwise directed by a Company Order.

                                      20

 
          If the Company shall acquire any of the Securities, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Securities unless and until the same are delivered to the
Trustee canceled or for cancellation.

          Section 310. Computation of Interest.

          Except as otherwise specified as contemplated by Section 301 for
Securities of any series, interest on the Securities of each series shall be
computed on the basis of a 360-day year of twelve 30-day months.

                                   ARTICLE IV

                           SATISFACTION AND DISCHARGE

          Section 401. Satisfaction and Discharge of Indenture.

          This Indenture shall upon Company Request cease to be of further
effect (except as to any surviving rights of registration of transfer or
exchange of Securities and substitution of mutilated, defaced, destroyed, lost
or stolen Securities herein expressly provided for), and the Trustee, 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 306 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 1003) have been delivered to the Trustee canceled or for
          cancellation; or

               (B)  the Company has deposited or caused to be deposited with the
          Trustee as trust funds in trust for the purpose an amount of money in
          the currency in which such Securities are payable sufficient to pay
          and discharge the entire indebtedness on such Securities not therefore
          delivered to the Trustee canceled or for cancellation, for principal
          (and premium, if any) and interest to the date of such deposit (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 607, the obligations of
the Trustee to any Authenticating Agent

                                      21

 
under Section 614 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 402 and the last paragraph of Section 1003 shall survive.

          Section 402. Application of Trust Money.

          Subject to provisions of the last paragraph of Section 1003, all money
deposited with the Trustee pursuant to Section 401 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 any premium and
interest for whose payment such money has been deposited with the Trustee.

          Section 403. Satisfaction, Discharge and Defeasance of Securities of
                       any Series.

          The Company shall be deemed to have been Discharged from its
obligations with respect to Securities of any series on the ninety-first day
after the applicable conditions set forth below have been satisfied:

          (1)(A)    the Company shall have deposited or caused to be deposited
     irrevocably with the Trustee as trust funds in trust, specifically pledged
     as security for, and dedicated solely to, the benefit of the Holders of the
     Securities of such series (i) money in the currency in which such
     Securities are payable in an amount, or (ii) U.S. Government Securities,
     or, in the case of Securities denominated in a foreign currency, Foreign
     Government Securities, which through the payment of interest and principal
     in respect thereof in accordance with their terms will provide, not later
     than one day before the due date of any payment, money in the currency in
     which such Securities are payable in an amount, or (iii) a combination of
     (i) and (ii), sufficient, in the opinion of a nationally recognized firm of
     independent public accountants expressed in a written certification thereof
     delivered to the Trustee, to pay and discharge each installment of
     principal (including mandatory sinking fund payments) of, and premium (not
     relating to optional redemption), if any, and interest on, the Outstanding
     Securities of such series on the dates such installments of principal of,
     and premium (not relating to optional redemption), if any, or interest are
     due; or

               (B)  the Company has properly fulfilled such other means of
          satisfaction and discharge as is specified to be applicable to the
          Securities of such series;

          (2)  the Company shall have delivered to the Trustee an Opinion of
     Counsel of a nationally recognized firm to the effect that holders of the
     Securities of such series will not recognize income, gain or loss for
     Federal income tax purposes as a result of the Company's exercise of its
     option under this Section 403 and will be subject to Federal income tax on
     the same amount and in the same manner and at the same times as would have
     been the case if such option had not been exercised, or a copy of a ruling
     or other formal statement or action to that effect received from or
     published by the Internal Revenue Service;

                                      22

 
          (3) the Company has paid or caused to be paid all other sums payable
     with respect to the Securities of such series at the time outstanding;

          (4)  the Company has delivered to the Trustee an Opinion of Counsel to
     the effect that the trust resulting from the deposit, defeasance and
     discharge under this Section 403 will not constitute, or is qualified as a
     regulated investment company under the Investment Company Act of 1940;

          (5)  such deposit will not result in a breach or violation of, or
     constitute a default under, this Indenture or any other agreement or
     instrument to which the Company is a party or by which it is bound;

          (6)  no Event of Default or event which, after notice or lapse of time
     or both, would become an Event of Default shall have occurred and be
     continuing on the date of such deposit; and

          (7)  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, discharge and defeasance of the
     entire indebtedness on all Securities of any such series at the time
     outstanding have been complied with.

          "Discharged" means, for purposes of this Section 403, that the Company
shall be deemed to have paid and discharged the entire indebtedness represented
by, and obligations under, the Securities of such series and to have satisfied
all the obligations under this Indenture relating to the Securities, of such
series (and the Trustee, at the expense of the Company, shall execute proper
instruments acknowledging the same), except (i) rights of registration of
transfer and exchange, and the Company's right of optional redemption, if any,
(ii) substitution of mutilated, defaced, destroyed, lost or stolen Securities,
(iii) rights of holders of Securities to receive from the trust fund described
in Clause (1) above, payments of principal of, and premium (not relating to
optional redemption), if any, and interest on the Securities, and remaining
rights of the holders of Securities to receive mandatory sinking fund payments,
if any, (iv) the rights, obligations and immunities of the Trustee hereunder and
(v) the rights of the Holders of such series as beneficiaries hereof with
respect to the property so deposited with the Trustee payable to all or any of
them.

          Section 404. Covenant Defeasance of Securities of any Series.

          The Company shall cease to be under any obligation to comply with any
term, provision or condition set forth in Section 1006 with respect to
Securities of any series or any other term, provision or condition of any
covenant specified as contemplated by Section 301 with respect to Securities of
any series at any time after the applicable conditions set forth below have been
satisfied:

          (1)(A)    the Company shall have deposited or caused to be deposited
     irrevocably with the Trustee as trust funds in trust, specifically pledged
     as security for, an dedicated solely to, the benefit of the Holders of the
     Securities of such series (i) money in the currency in which such
     Securities are payable in an amount, or (ii) U.S. Government Securities or,
     in the case of Securities denominated in a foreign currency, Foreign
     Government Securities, which through the payment of interest and principal
     in respect thereof in accordance with their terms will provide, not later
     than one day before the due

                                      23

 
     date of any payment, money in the currency in which such Securities are
     payable in an amount, or (iii) a combination of (i) and (ii), sufficient,
     in the opinion of a nationally recognized firm of independent public
     accountants expressed in a written certification thereof delivered to the
     Trustee, to pay and discharge each installment of principal (including
     mandatory sinking fund payments) of, and premium (not relating to optional
     redemption), if any, and interest on, the Outstanding Securities of such
     series on the dates such installments of principal of, and premium (not
     relating to optional redemption), if any, or interest are due; or

               (B)  the Company has properly fulfilled such other means of
          defeasance as is specified to be applicable to the Securities of such
          series;

          (2)  the Company has paid or caused to be paid all other sums payable
     with respect to the Securities of such series at the time outstanding;

          (3)  such deposit will not result in a breach or violation of, or
     constitute a default under, this Indenture or any other agreement or
     instrument to which the Company is a party or by which it is bound;

          (4)  no Event of Default or event which, after notice or lapse of time
     or both, would become an Event of Default shall have occurred and be
     continuing on the date of such deposit;

          (5)  the Company has delivered to the Trustee an Opinion of Counsel to
     the effect that the trust resulting from the deposit, defeasance and
     discharge under this Section 404 will not constitute, or is qualified as, a
     regulated investment company under the Investment Company Act of 1940; and

          (6)  the Company has delivered to the Trustee an Officer's Certificate
     and an Opinion of Counsel each stating that all conditions precedent herein
     provided for relating to the defeasance of the covenants referred to in
     this Section 404 with respect to Securities of any such series at the time
     outstanding have been complied with.

Notwithstanding the discharge and defeasance of any term, provision or condition
of the covenant set forth in Section 1006 of this Indenture with respect to a
series of Securities or any other term, provision or condition of any covenant
specified as contemplated by Section 301 with respect to Securities of any
series at the time outstanding all other obligations of the Company in this
Indenture including, without limitation, the Company's primary liability for the
payment of the principal (including mandatory sinking fund payments) of, and
premium, if any, and interest on all Securities of such series shall survive
until the payment of all such principal has been made.

          Section 405. Reinstatement.

          If the Trustee is unable to apply any money, U.S. Government
Securities or Foreign Government Securities in accordance with Section 403 or
404 by reason of any legal proceeding or by reason of any order or judgment of
any court or governmental authority enjoining, restraining or otherwise
prohibiting such application, the Company's obligations under this Indenture and
the Securities shall be revived and reinstated as though no deposit had occurred
pursuant to Section 403 or 404, as the

                                      24

 
case may be, until such time as the Trustee is permitted to apply all such
money, U.S. Government Securities or Foreign Government Securities in accordance
with Section 403 or 404, as the case may be.

                                   ARTICLE V

                                    REMEDIES

          Section 501. Events of Default.

          "Event of Default", wherever used herein, means with respect to any
particular series of Securities any one of the following events (whatever the
reason for such Event of Default and whether it shall be voluntary or
involuntary or be effected by operation of law or pursuant to any judgment,
decree or order of any court or any order, rule regulation of any administrative
or governmental body), unless such event is either inapplicable to a particular
series or it is specifically deleted or modified in or pursuant to the Board
Resolution or supplemental indenture authorizing that series:

          (a)  default in the payment of any installment of interest upon any of
the Securities of that series when the same becomes due and payable, and
continuance of such default for a period of 30 days; or

          (b)  default in the payment of the principal of (or premium, if any,
on) any of the Securities of that series at its Maturity by declaration or
otherwise; or

          (c)  default in the payment of any sinking or purchase fund payment or
analogous obligation when the same becomes due and payable by the terms of the
Securities of such series; or

          (d)  failure on the part of the Company duly to observe or perform any
other of the covenants or agreements on the part of the Company in the
Securities of that series or in this Indenture for a period of 60 days after the
date on which written notice of such failure, requiring the Company to remedy
the same, shall have been given to the Company by the Trustee by registered or
certified mail or to the Company and the Trustee by the Holders of at least 25%
in aggregate principal amount of the Outstanding Securities of such series.

          (e)  a default under any bond, debenture, note or other evidence of
indebtedness for money borrowed by the Company (including a default with respect
to Securities of any series other than that series) or under any mortgage,
indenture or instrument under which there may be issued or by which there may be
secured or evidenced any indebtedness for money borrowed by the Company
(including this Indenture) whether such indebtedness now exists or shall
hereafter be created, which default shall constitute a failure to pay in excess
of $25 million principal amount of such indebtedness when due and payable after
the expiration of any applicable grace period with respect thereto or shall have
resulted in an excess of $25 million of principal amount of such indebtedness
becoming or being declared due and payable prior to the date on which it would
otherwise have become due and payable, without such indebtedness having been
discharged, or such acceleration having been rescinded or annulled, within a
period of 10 days after there shall have 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 principal amount of the Outstanding Securities of
that series a written notice specifying such default and requiring the Company
to cause such indebtedness to be discharged or cause such acceleration to be
rescinded or annulled and stating that such notice is a "Notice of Default"
hereunder; or

                                      25

 
          (f)  the entry of an order for relief against the Company under the
Federal Bankruptcy Act by a court having jurisdiction in the premises or a
decree or order by a court having jurisdiction in the premises adjudging the
Company a bankrupt or insolvent under any other applicable Federal or State law,
or the entry of a decree or order approving as properly filed a petition seeking
reorganization, arrangement, adjustment or composition of or in respect of the
Company under the Federal Bankruptcy Code or any other applicable Federal or
State 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
90 consecutive days; or

          (g)  the consent by the Company to the institution of bankruptcy or
insolvency proceedings against it, or the filing by it of a petition or answer
of consent seeking reorganization or relief under the Federal Bankruptcy Code or
any other applicable Federal or State 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, or the taking of corporate action by the
Company in furtherance of any such action; or

          (h)  any other Event of Default provided in the supplemental indenture
under which such series of Securities is issued or in the form of Security for
such series.

          Section 502. Acceleration of Maturity; Rescission and Annulment.

          If an Event of Default with respect to Securities of any series at the
time Outstanding occurs and is continuing, then in every such case the Trustee
or the Holders of not less than 25% in principal amount of the Outstanding
Securities of that series may declare the principal amount (or, if any of the
Securities of that series are Original Issue Discount Securities, such portion
of the principal amount of such Securities as may be specified in the terms of
that series) of all of the Securities of that series to be due and payable
immediately, by a notice in writing to the Company (and to the Trustee if given
by Holders), and upon any such declaration such principal amount (or specified
amount) shall become immediately due and payable.

          At any time after such a declaration of acceleration with respect to
Securities of any series has been made and before a judgment or decree for
payment of the money due has been obtained by the Trustee as hereinafter in this
Article provided, the Holders of a majority in principal amount of the
Outstanding Securities of that series, 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 on all Securities of that series,

               (B)  the principal of (and premium, if any, on) any Securities of
          that series which have become due otherwise than by such declaration
          of acceleration and any interest thereon at the rate or rates
          prescribed therefor in such Securities,

                                      26

 
               (C) to the extent that payment of such interest is lawful,
          interest upon overdue interest at the rate or rates prescribed
          therefor in such Securities, and

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

     and

          (2)  all Events of Default with respect to Securities of that series,
     other than the non-payment of the principal of Securities of that series
     which have become due solely by such declaration of acceleration, have been
     cured or waived as provided in Section 513.

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

          Section 503. Collection of Indebtedness and Suits for Enforcement by
                       Trustee.

          The Company covenants that if

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

          (2)  default is made in the payment (other than any sinking fund
     payment) of the principal of (or premium, if any, on) any Security at the
     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 premium, if any) and interest and, to the extent
that payment of such interest shall be legally enforceable, interest on any
overdue principal (and premium, if any) and on any overdue interest, at the rate
or rates prescribed therefor in such Securities, and, in addition thereto, such
further amount as shall be sufficient to cover the costs and expenses of
collection, including the reasonable compensation, expenses, disbursements and
advances of the Trustee, its agents and counsel.

          If an Event of Default with respect to Securities of any series occurs
and is continuing, the Trustee may in its discretion proceed to protect and
enforce its rights and the rights of the Holders of Securities of such series 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.

                                      27

 
          Section 504. 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 amount due it for
the reasonable compensation, expenses, disbursements and advances of the
Trustee, its agents and counsel, and any other amounts due the Trustee under
Section 607.

          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 505. 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 the reasonable compensation, expenses,
disbursements and advances of the Trustee, its agents and counsel, be for the
ratable benefit of the Holders of the Securities in respect of which such
judgment has been recovered.

          Section 506. Application of Money Collected.

          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 premium,
if any) or interest, 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 under Section
     607; and

          SECOND:  To the payment of the amounts then due and unpaid for
     principal of (and premium, if any) and interest 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 premium, if
     any) and interest, respectively.

                                      28

 
          Section 507. Limitation on Suits.

          No Holder of any Security of any series 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 with respect to the Securities of that
     series;

          (2)  the Holders of not less than 25% in principal amount of the
     Outstanding Securities of that series 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 of that series;

it being understood and intended that no one or more of such 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 of
such Holders, or to obtain or to seek to obtain priority or preference over any
other of such Holders or to enforce any right under this Indenture, except in
the manner herein provided and for the equal and ratable benefit of all of such
Holders.

          Section 508. Unconditional Right of Holders to Receive Principal,
                    Premium and Interest.

          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 premium, if any) and (subject to
Section 307) any interest on such Security on the Stated Maturity or Maturities
expressed in such Security (or, in the case of redemption, on the Redemption
Date) and to institute suit for the enforcement of any such payment, and such
rights shall not be impaired without the consent of such Holder.

          Section 509. 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.

                                      29

 
          Section 510. 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 306, 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 511. Delay or Omission Not Waiver.

          No delay or omission of the Trustee or of any Holder of any Securities
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 512. Control by Holders.

          The Holders of a majority in principal amount of the Outstanding
Securities of any series 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, with respect to the
Securities of such series, 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 513. Waiver of Past Defaults.

          The Holders of not less than a majority in principal amount of the
Outstanding Securities of any series may on behalf of the Holders of all the
Securities of such series waive any past default hereunder with respect to such
series and its consequences, except a default

          (1)  in the payment of the principal of (or premium, if any) or
     interest on any Security of such series, 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 of such series 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.

                                      30

 
          Section 514. 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 Company.

          Section 515. 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.

                                   ARTICLE VI

                                  THE TRUSTEE

          Section 601. Certain Duties and Responsibilities.

          The duties and responsibilities of the Trustee shall be as provided by
the Trust Indenture Act.  Notwithstanding the foregoing, 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 602. Notice of Defaults.

          If a default occurs hereunder with respect to Securities of any
series, the Trustee shall give the Holders of Securities of such series notice
of such default 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 501(d) with respect to Securities of such series, 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 with
respect to Securities of such series.

                                      31

 
          Section 603. Certain Rights of Trustee.

          Subject to the provisions of Section 601:

               (a)  the Trustee may rely and shall be protected in acting or
          refraining from acting upon any 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 and the written 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 examine the
          books, records and premises of the Company, personally or by agent or
          attorney; and

               (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

                                      32

 
          any misconduct or negligence on the part of any agent or attorney
          appointed with due care by it hereunder.

          Section 604. 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 or any Authenticating Agent 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 or any Authenticating Agent shall not be accountable for the use or
application by the Company of Securities or the proceeds thereof.

          Section 605. May Hold Securities.

          The Trustee, any Authenticating Agent, 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
608 and 613, may otherwise deal with the Company with the same rights it would
have if it were not Trustee, Authenticating Agent, Paying Agent, Security
Registrar or such other agent.

          Section 606. 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 607. Compensation and Reimbursement.

          The Company agrees

          (1)  to pay to the Trustee from time to time reasonable compensation
     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, 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 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 the trust or trusts hereunder, 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.

                                      33

 
          Section 608. 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.  To the extent
permitted by such Act, the Trustee shall not be deemed to have a conflicting
interest by virtue of being the successor trustee under the following
Indentures:  the Indenture between the Company and Mellon National Bank and
Trust Company dated as of June 15, 1967, the Indenture between the Company and
Mellon National Bank and Trust Company dated as of December 15, 1968, the
Indenture between the Company and Mellon National Bank and Trust Company dated
as of December 1, 1971, the Indenture between the Company and Mellon Bank, N.A.
dated as of March 15, 1973, the Indenture between the Company and Mellon Bank,
N.A. dated as of March 15, 1974, the Indenture between the Company and Mellon
Bank, N.A. dated as of October 1, 1976, the Indenture between the Company and
Mellon Bank, N.A. dated as of November 15, 1977, the Indenture between the
Company and Mellon Bank, N.A. dated as of June 15, 1980, and the Indenture
between the Company and Mellon Bank, N.A. dated as of September 15, 1985,
respectively.

          Section 609. 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.  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, it shall resign immediately
in the manner and with the effect hereinafter specified in this Article.

          Section 610. 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 in accordance with the
applicable requirements of Section 611.

          (b)  The Trustee may resign at any time with respect to the Securities
of one or more series by giving written notice thereof to the Company.  If the
instrument of acceptance by a successor Trustee required by Section 611 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 with respect to the
Securities of such series.

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

          (d)  If at any time:

                                      34

 
          (1)  the Trustee shall fail to comply with Section 608 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 609 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 by a Board Resolution may remove the
Trustee with respect to all Securities, or (ii) subject to Section 514, 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 removal of the Trustee with respect to all
Securities and the appointment of a successor Trustee or Trustees.

          (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, with
respect to the Securities of one or more series, the Company, by a Board
Resolution, shall promptly appoint a successor Trustee or Trustees with respect
to the Securities of that or those series (it being understood that any such
successor Trustee may be appointed with respect to the Securities of one or more
or all of such series and that at any time there shall be only one Trustee with
respect to the Securities of any particular series) and shall comply with the
applicable requirements of Section 611.  If, within one year after such
resignation, removal or incapability, or the occurrence of such vacancy, a
successor Trustee with respect to the Securities of any series shall be
appointed by Act of the Holders of a majority in principal amount of the
Outstanding Securities of such series which has been delivered to the Company
and the retiring Trustee, the successor Trustee so appointed shall, forthwith
upon its acceptance of such appointment in accordance with the applicable
requirements of Section 611, become the successor Trustee with respect to the
Securities of such series and to that extent supersede the successor Trustee
appointed by the Company.  If no successor Trustee with respect to the
Securities of any series shall have been so appointed by the Company or the
Holders and accepted appointment in the manner required by Section 611, any
Holder who has been a bona fide Holder of a Security of such series 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
with respect to the Securities of such series.

          (f)  The Company shall give notice of each resignation and each
removal of the Trustee with respect to the Securities of any series and each
appointment of a successor Trustee with respect to the Securities of any series
to all Holders of Securities of such series in the manner provided in Section
106.  Each notice shall include the name of the successor Trustee with respect
to the Securities of such series and the address of its Corporate Trust Office.

                                      35

 
          Section 611. Acceptance of Appointment by Successor.

          (a)  In case of the appointment hereunder of a successor Trustee with
respect to all Securities, every such successor Trustee so appointed 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; but, on the 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.

          (b)  In case of the appointment hereunder of a successor Trustee with
respect to the Securities of one or more (but not all) series, the Company, the
retiring Trustee and each successor Trustee with respect to the Securities of
one or more series shall execute and deliver an indenture supplemental hereto
wherein each successor Trustee shall accept such appointment and which (1) shall
contain such provisions as shall be necessary or desirable to transfer and
confirm to, and to vest in, each successor Trustee all the rights, powers,
trusts and duties of the retiring Trustee with respect to the Securities of that
or those series to which the appointment of such successor Trustee relates, (2)
if the retiring Trustee is not retiring with respect to all Securities, shall
contain such provisions as shall be deemed necessary or desirable to confirm
that all the rights, powers, trusts and duties of the retiring Trustee with
respect to the Securities of that or those series as to which the retiring
Trustee is not retiring shall continue to be vested in the retiring Trustee, and
(3) shall add to or change any of the provisions of this Indenture as shall be
necessary to provide for or facilitate the administration of the trusts
hereunder by more than one Trustee, it being understood that nothing herein or
in such supplemental indenture shall constitute such Trustees co-trustees of the
same trust and that each such Trustee shall be trustee of a trust or trusts
hereunder separate and apart from any trust or trusts hereunder administered by
any other such Trustee; and upon the execution and delivery of such supplemental
indenture the resignation or removal of the retiring Trustee shall become
effective to the extent provided therein and each 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 with respect to the
Securities of that or those series to which the appointment of such successor
Trustee relates; but, on request of the Company or any successor Trustee, such
retiring Trustee shall duly assign, transfer and deliver to such successor
Trustee all property and money held by such retiring Trustee hereunder with
respect to the Securities of that or those series to which the appointment of
such successor Trustee relates.

          (c)  Upon request of any such successor Trustee, the Company shall
execute any and all instruments for more fully and certainly vesting in and
confirming to such successor Trustee all such rights, powers and trusts referred
to in paragraph (a) or (b) of this Section, as the case may be.

          (d)  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.

                                      36

 
          Section 612. Merger, Conversion, Consolidation or Succession to
                       Business.

          Any corporation into which the Trustee may be merged or converted or
with which it may be consolidated, or any corporation resulting from any merger,
conversion or consolidation to which the Trustee shall be a party, or any
corporation succeeding to all or substantially all the corporate trust business
of the Trustee, shall be the successor of the Trustee hereunder, provided such
corporation 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 613. 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) to the extent applicable.

          Section 614. Appointment of Authenticating Agent.

          The Trustee may appoint an Authenticating Agent or Agents with respect
to one or more series of Securities which shall be authorized to act on behalf
of the Trustee to authenticate Securities of such series issued upon original
issue and upon exchange, registration of transfer or partial redemption thereof
or pursuant to Section 306, and Securities so authenticated shall be entitled to
the benefits of this Indenture and shall be valid and obligatory for all
purposes as if authenticated by the Trustee hereunder.  Wherever reference is
made in this Indenture to the authentication and delivery of Securities by the
Trustee or the Trustee's certificate of authentication, such reference shall be
deemed to include authentication and delivery on behalf of the Trustee by an
Authenticating Agent and a certificate of authentication executed on behalf of
the Trustee by an Authenticating Agent.  Each Authenticating Agent shall be
acceptable to the Company and shall at all times be a corporation organized and
doing business under the laws of the United States of America, any State thereof
or the District of Columbia, authorized under such laws to act as Authenticating
Agent, having a combined capital and surplus of not less than $50,000,000 and
subject to supervision or examination by Federal or State authority.  If such
Authenticating Agent 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
Authenticating Agent 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
an Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, such Authenticating Agent shall resign immediately
in the manner and with the effect specified in this Section.

          Any corporation into which an Authenticating Agent may be merged or
converted or with which it may be consolidated, or any corporation resulting
from any merger, conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation succeeding to the corporate agency or
corporate trust business of an Authenticating Agent, shall continue to be an
Authenticating Agent, provided such corporation shall be otherwise eligible
under this Section, without the execution or filing of any paper or any further
act on the part of the Trustee or the Authenticating Agent.

                                      37

 
          An Authenticating Agent may resign at any time by giving written
notice thereof to the Trustee and to the Company.  The Trustee may at any time
terminate the agency of an Authenticating Agent by giving written notice thereof
to such Authenticating Agent and to the Company.  Upon receiving such a notice
of resignation or upon such a termination, or in case at any time such
Authenticating Agent shall cease to be eligible in accordance with the
provisions of this Section, the Trustee may appoint a successor Authenticating
Agent which shall be acceptable to the Company and shall mail written notice of
such appointment by first-class mail, postage prepaid, to all Holders of
Securities of the series with respect to which such Authenticating Agent will
serve, as their names and addresses appear in the Security Register.  Any
successor Authenticating Agent upon acceptance of its appointment hereunder
shall become vested with all the rights, powers and duties of its predecessor
hereunder, with like effect as if originally named as an Authenticating Agent.
No successor Authenticating Agent shall be appointed unless eligible under the
provisions of this Section.

          The Trustee agrees to pay to each Authenticating Agent from time to
time reasonable compensation for its services under this Section and the Trustee
shall be entitled to be reimbursed for such payments, subject to the provisions
of Section 607.

          If an appointment with respect to one or more series is made pursuant
to this Section, the Securities of such series may have endorsed thereon, in
addition to the Trustee's certificate of authentication, an alternate
certificate of authentication in the following form:

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

                                    THE FIRST NATIONAL BANK OF CHICAGO,
                                    as Trustee


                                    By
                                       _________________________________
                                            As Authenticating Agent


                                    By
                                       __________________________________
                                                Authorized Officer

                                      38

 
                                 ARTICLE VII

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

          Section 701. Company to Furnish Trustee Names and Addresses of
                       Holders.

          The Company will furnish or cause to be furnished to the Trustee:

               (a)  semi-annually, not more than 15 days after January 1 and
          July 1 in each year in such form as the Trustee may reasonably
          require, a list for each series of Securities of the names and
          addresses of the Holders of Securities of such series as of such date;
          and

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 702. 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 701 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 701 upon receipt of a new list so furnished.

          (b)  The rights of the Holders to communicate with other Holders with
respect to their rights under this Indenture or under the Securities, and the
corresponding rights and privileges 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 703. Reports by Trustee.

          (a)  Within 60 days after the 15th day of February of each year
commencing with the later of February 15, 1993, or the first February 15th after
the first issuance of Securities, the Trustee shall transmit to Holders such
reports concerning the Trustee and its actions under this Indenture as may be
required pursuant to the Trust Indenture Act at the times and 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 any Securities are listed, with the Commission and with the Company.  The
Company will notify the Trustee when any Securities are listed on any stock
exchange.

                                      39

 
          Section 704. Reports by Company.

          The Company shall file with the Trustee and the Commission, and
transmit 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 Securities Exchange Act of 1934 shall be
filed with the Trustee within 15 days after the same is so required to be filed
with the Commission.

                                  ARTICLE VIII

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

          Section 801. Company May Consolidate, Etc., Only on Certain Terms.

          The Company shall not consolidate with or merge into any other
corporation or convey, transfer or lease its properties and assets substantially
as an entirety to any Person unless:

          (1)  the corporation formed by such consolidation or into which the
     Company is merged or the Person which acquires by conveyance or transfer,
     or which leases, the properties and assets of the Company substantially as
     an entirety shall be a corporation organized and 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 satisfactory to the Trustee, the due
     and punctual payment of the principal of (and premium, if any) and interest
     on all the Securities and the performance of any covenant of the Indenture
     on the part of the Company to be performed or observed;

          (2)  immediately after giving effect to 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; and

          (3)  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 such supplemental indenture complys with
     this Article and that all conditions precedent herein provided for relating
     to such transaction have been complied with.

          Section 802. Successor Substituted.

          Upon any consolidation by the Company with or merger of the Company
into, any other Person or any conveyance, transfer or lease of the properties
and assets of the Company substantially as an entirety in accordance with
Section 801, 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 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.

                                      40

 
                                 ARTICLE IX

                            SUPPLEMENTAL INDENTURES

          Section 901. 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 of all or any series of Securities (and if such covenants are to be
     for the benefit of less than all series of Securities, stating that such
     covenants are expressly being included solely for the benefit of such
     series) or to surrender any right or power herein conferred upon the
     Company; or

          (3)  to add any additional Events of Default in respect of the
     Securities of any specific series or all series; or

          (4)  to add to or change any of the provisions of this Indenture to
     such extent as shall be necessary to permit or facilitate the issuance of
     Securities in bearer form, registrable or not registrable as to principal,
     and with or without interest coupons, or if permitted by law, to provide
     for the exchangeability of such Securities of the same series in fully
     registered form, or to permit or facilitate the issuance of Securities in
     uncertificated form; or

          (5)  to change or eliminate any of the provisions of this Indenture in
     respect of one or more series of Securities, provided that any such
     addition, change or elimination (i) shall neither (A) apply to any Security
     of any series created prior to the execution of such supplemental indenture
     and entitled to the benefit of such provision nor (B) modify the rights of
     the Holder of any such Security with respect to such provision or (ii)
     shall become effective only when there is no such Security Outstanding; or

          (6)  to secure the Securities; or

          (7)  to establish the form or terms of Securities of any series as
     permitted by Sections 201 and 301; or

          (8)  to evidence and provide for the acceptance of appointment
     hereunder by a successor Trustee with respect to the Securities of one or
     more series and to add to or change any of the provisions of this Indenture
     as shall be necessary to provide for or facilitate the administration of
     the trusts hereunder by more than one Trustee, pursuant to the requirements
     of Section 611(b); or

                                      41

 
          (9)  to cure any ambiguity, to correct or supplement any provision
     herein which may be defective or inconsistent with any other provision
     herein, or to make any other provisions with respect to matters or
     questions arising under this Indenture, provided that such action pursuant
     to this clause (9) shall not adversely affect the interests of the Holders
     of Securities of any series in any material respect.

          Section 902. 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 of each series affected by such
supplemental indenture, 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 of Securities of such series under this Indenture; provided, however,
that no such supplemental indenture shall, without the consent of the Holder of
each Outstanding Security affected thereby,

          (1)  change the Stated Maturity of the principal of, or any
     installment of principal of or interest on, any Security, or reduce the
     principal amount thereof or the rate of interest thereon or any premium
     payable upon the redemption thereof, or reduce the amount of the principal
     of an Original Issue Discount Security that would be due and payable upon a
     declaration of acceleration of the Maturity thereof pursuant to Section
     502, or change any Place of Payment where, or the coin or currency in
     which, any Security or any premium or the 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

          (2)  reduce the percentage in principal amount of the Outstanding
     Securities of any series, 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 this Indenture or
     certain defaults hereunder and their consequences) provided for in this
     Indenture, or

          (3)  modify any of the provisions of this Section, Section 513,
     Section 1006 or Section 1007 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, provided, however, that this clause shall not be deemed
     to require the consent of any Holder with respect to changes in the
     references to "the Trustee" and concomitant changes in this Section and
     Section 1007, or the deletion of this proviso, in accordance with the
     requirements of Sections 611(b) and 901(8).

A supplemental indenture which changes or eliminates any covenant or other
provision of this Indenture which has expressly been included solely for the
benefit of one or more particular series of Securities, or which modifies the
rights of the Holders of Securities of such series with respect to such covenant
or other provision, shall be deemed not to affect the rights under this
Indenture of the Holders of Securities of any other series.

                                      42

 
          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.

          Section 903. Execution of Supplemental Indentures.

          In executing, or accepting the additional trusts created by, any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture, the Trustee shall be entitled to receive,
and (subject to Section 601) 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 904. 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 to the extent provided therein.

          Section 905. Conformity with Trust Indenture Act.

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

          Section 906. Reference in Securities to Supplemental Indentures.

          Securities of any series 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 of any series 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 of such series.


                                   ARTICLE X

                                   COVENANTS

          Section 1001. Payment of Principal, Premium and Interest.

          The Company covenants and agrees for the benefit of each series of
Securities that it will duly and punctually pay the principal (and premium, if
any) and interest on the Securities of that series in accordance with the terms
of the Securities and this Indenture.

                                      43

 
          Section 1002. Maintenance of Office or Agency.

          The Company will maintain in each Place of Payment for any series of
Securities an office or agency where Securities of that series may be presented
or surrendered for payment, where Securities of that series may be surrendered
for registration of transfer or exchange and where notices and demands to or
upon the Company in respect of the Securities of that series 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 where the Securities of one or more series 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 each Place of Payment for Securities of any series 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 1003. Money for Securities Payments to Be Held in Trust.

          If the Company shall at any time act as its own Paying Agent with
respect to any series of Securities, it will, on or before each due date of the
principal of (and premium, if any) or interest on any of the Securities of that
series, segregate and hold in trust for the benefit of the Persons entitled
thereto a sum sufficient to pay the principal (and premium, if any) and 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 for any
series of Securities, it will, not later than the opening of business at each
Place of Payment for such series of Securities on each due date of the principal
of or any premium or interest on any Securities of that series, deposit with a
Paying Agent a sum sufficient to pay such amount, such sum to be held as
provided by the Trust Indenture 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 for any series of Securities
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 of that series) in the making of any payment in respect of the
Securities of that series, and upon the written request of the Trustee,
forthwith pay to the Trustee all sums held in trust by such Paying Agent for
payment in respect of the Securities of that series.

          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,

                                      44

 
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 (and premium, if
any) or interest on any Security of any series and remaining unclaimed for two
years after such principal (and premium, if any), 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 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 1004. 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, a brief
certificate from the principal executive officer, principal financial officer or
principal accounting officer 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 terms, provisions and conditions of this Indenture (without regard to
any period 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 1005. Existence.

          Subject to Article VIII, the Company will do or cause to be done all
things necessary to preserve and keep in full force and effect its corporate
existence, rights (charter and statutory) and franchises; provided, however,
that the Company shall not be required to preserve any such right or franchise
if the Company shall determine that the preservation thereof is no longer
desirable in the conduct of the business of the Company and that the loss
thereof is not disadvantageous in any material respect to the Holders.

          Section 1006. Limitation on Liens.

          Except as in this Section expressly permitted, so long as any of the
Securities of any series shall be outstanding, the Company will not at any time
directly or indirectly create, assume or suffer to exist, and will not cause,
suffer or permit any Subsidiary, as long as it remains a Subsidiary, directly or
indirectly to create, assume or suffer to exist, except in favor of the Company,
any mortgage, pledge or other lien or encumbrance of or upon any of its
properties or assets, real, personal or mixed (including stock and other
securities of Subsidiaries), whether owned at the date of this Indenture or
thereafter acquired, or of or upon any income or profits therefrom, without
making effective provision (and the Company covenants that in such case it will
make or cause to be made effective provision) whereby the Securities then
outstanding and any other indebtedness of the Company then entitled thereto
shall be secured by such mortgage, pledge, lien or encumbrance equally and
ratably with any and all other obligations and indebtedness thereby secured, so
long as any such other obligations or indebtedness shall be so secured.

 
          Nothing in this Indenture shall be construed to prevent the Company or
any Subsidiary, without so securing the Securities, from creating, assuming or
suffering to exist the following mortgages, pledges, liens or encumbrances, to
which the provisions of the preceding paragraph shall not be applicable:

          (a)  mortgages, pledges, liens or encumbrances upon any property
     presently owned or hereafter acquired, created at the time of acquisition
     to secure a portion of the purchase price thereof, or existing thereon at
     the date of acquisition, whether or not assumed by the Company or a
     Subsidiary, provided that every such mortgage, pledge, lien or encumbrance
     shall apply only to the property so acquired and fixed improvements
     thereon;

          (b)  any extension, renewal, or refunding of any mortgage, pledge,
     lien or encumbrance permitted by subsection (a) above, if limited to the
     same property subject to, and securing not more than the amount secured by,
     the mortgage, pledge, lien or encumbrance extended, renewed or refunded;

          (c)  the pledge of current assets, in the ordinary course of business,
     to secure current liabilities;

          (d)  mortgages or other liens upon (i) property, to secure obligations
     to pay all or a part of the purchase price of such property only out of or
     measured by the production, or the proceeds of such production, from such
     property of oil or gas or products or by-products thereof, or (ii) the
     production from property of oil or gas or products or by-products thereof,
     or the proceeds of such production, to secure obligations to pay all or a
     part of the expenses of exploration, drilling or development of such
     property only out of such production or the proceeds of such production;

          (e)  mechanics' or materialmen's liens, good faith deposits in
     connection with tenders, leases of real estate, bids or contracts (other
     than contracts for the payment of money), deposits to secure public or
     statutory obligations, deposits to secure, or in lieu of, surety, stay or
     appeal bonds, and deposits as security for the payment of taxes or
     assessments or similar charges, liens or security interests given in
     connection with bid or completion bonds;

          (f)  any lien arising by reason of deposits with, or the giving of any
     form of security to, any governmental agency or any body created or
     approved by law or governmental regulation for any purposes at any time as
     required by law or governmental regulation as a condition to the
     transaction of any business or the exercise of any privilege or license, or
     to enable the Company or a Subsidiary to maintain self-insurance or to
     participate in any funds established to cover any insurance risks in
     connection with workmen's compensation, unemployment insurance, old age
     pensions or other social security, or to share in the privileges or
     benefits required for companies participating in such arrangements;

          (g)  the pledge or assignment of accounts receivable, including
     customers' installment paper, to banks or others made in the ordinary
     course of business (including to or by any Subsidiary which is principally
     engaged in the business of financing the business of the Company and its
     Subsidiaries);

                                      46

 
          (h) the liens of taxes or assessments for the then current year or not
     at the time due, or the liens of taxes or assessments already due but the
     validity of which is being contested in good faith and against which an
     adequate reserve has been established;

          (i)  any judgment or lien against the Company or a Subsidiary, so long
     as the finality of such judgment is being contested and the execution
     thereon is stayed;

          (j)  assessments or similar encumbrances, the existence of which does
     not impair the use of the property subject thereto for the purposes for
     which it was acquired;

          (k)  landlords' liens on fixtures and movable property located on
     premises leased by the Company or a Subsidiary in the ordinary course of
     business so long as the rent secured thereby is not in default; and

          (l)  liens on the assets of any limited liability company organized
     under a limited liability company act of any state in which a limited
     liability company is treated as a partnership for federal income tax
     purposes.

          Section 1007. Waiver of Certain Covenants.

          The Company may omit in any particular instance to comply with any
term, provision or condition set forth in Section 1006 with respect to the
Securities of any series or any other covenant provided with respect to
Securities of any series as specified as contemplated by Section 301 (unless
otherwise provided by the terms of such series), if before the time for such
compliance the Holders of at least a majority in principal amount of the
Outstanding Securities of such series shall, by Act of such Holders, either
waive such compliance in such instance or generally waive compliance with such
term, provision or condition, but no such waiver shall extend to or affect such
term, provision or condition except to the extent so expressly waived, and,
until such waiver shall become effective, the obligations of the Company and the
duties of the Trustee in respect of any such term, provision or condition shall
remain in full force and effect.

                                   ARTICLE XI

                            REDEMPTION OF SECURITIES

          Section 1101. Applicability of Article.

          Securities of any series which are redeemable before their Stated
Maturity shall be redeemable in accordance with their terms and (except as
otherwise specified as contemplated by Section 301 for Securities of any series)
in accordance with this Article.

                                      47

 
          Section 1102. Election to Redeem; Notice to Trustee.

          The election of the Company to redeem any Securities shall be
evidenced by a Board Resolution.  In case of any redemption at the election of
the Company of less than all the Securities of any series, the Company shall, at
least 60 days prior to the Redemption Date fixed by the Company (unless a
shorter notice shall be satisfactory to the Trustee), notify the Trustee of such
Redemption Date, of the principal amount of Securities of such series to be
redeemed and, if applicable, of the tenor of the Securities to be redeemed.  In
the case of any redemption of Securities prior to the expiration of any
restriction on such redemption provided in the terms of such Securities or
elsewhere in this Indenture, the Company shall furnish the Trustee with an
Officers' Certificate evidencing compliance with such restriction.

          Section 1103. Selection by Trustee of Securities to Be Redeemed.

          If less than all the Securities of any series are to be redeemed
(unless all of the Securities of such series and of a specified tenor are to be
redeemed), the particular Securities to be redeemed shall be selected not more
than 60 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series not previously called for redemption, by such method
as the Trustee shall deem fair and appropriate and which may provide for the
selection for redemption of portions (equal to the minimum authorized
denomination for Securities of that series or any integral multiple thereof) of
the principal amount of Securities of such series of a denomination larger than
the minimum authorized denomination for Securities of that series.  If less than
all of the Securities of such series and of a specified tenor are to be
redeemed, the particular Securities to be redeemed shall be selected not more
than 60 days prior to the Redemption Date by the Trustee, from the Outstanding
Securities of such series and specified tenor not previously called for
redemption in accordance with the preceding sentence.

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

          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 1104. Notice of Redemption.

          Notice of redemption shall be given by first-class mail, postage
prepaid, mailed not less than 30 nor more than 60 days prior to the Redemption
Date, to each Holder of Securities to be redeemed, at his address appearing in
the Security Register.

          All notices of redemption shall state:

          (1)  the Redemption Date,

          (2)  the Redemption Price,

                                      48

 
          (3)  if less than all the Outstanding Securities of any series are to
     be redeemed, the identification (and, in the case of partial redemption of
     any Securities, the principal amounts) of the particular Securities to be
     redeemed,

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

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

          (6)  that the redemption is for a sinking fund, if such is the case.

          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 1105. Deposit of Redemption Price.

          Not later than the opening of business at each Place of Payment on any
Redemption Date for such series of Securities, 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 1003) an amount
of 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.

          Section 1106. 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, together with accrued interest
to the Redemption Date; provided, however, that, unless otherwise specified as
contemplated by Section 301, 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 their terms and the
provisions of Section 307.

          If any Security called for redemption shall not be so paid upon
surrender thereof for redemption, the principal (and premium, if any) shall,
until paid, bear interest from the Redemption Date at the rate prescribed
therefor in the Security.

                                      49

 
          Section 1107. Securities Redeemed in Part.

          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 deliver to the Holder of such Security without service
charge, a new Security or Securities of the same series and of like tenor, 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.

                                  ARTICLE XII

                                 SINKING FUNDS

          Section 1201. Applicability of Article.

          The provisions of this Article shall be applicable to any sinking fund
for the retirement of Securities of a series except as otherwise specified as
contemplated by Section 301 for Securities of such series.

          The minimum amount of any sinking fund payment provided for by the
terms of Securities of any series is herein referred to as a "mandatory sinking
fund payment", and any payment in excess of such minimum amount provided for by
the terms of Securities of any series is herein referred to  as an "optional
sinking fund payment".  If provided for by the terms of Securities of any
series, the cash amount of any sinking fund payment may be subject to reduction
as provided in Section 1202.  Each sinking fund payment shall be applied to the
redemption of Securities of any series as provided for by the terms of
Securities of such series.

          Section 1202. Satisfaction of Sinking Fund Payments with Securities.

          The Company (1) may deliver Outstanding Securities of a series (other
than any previously called for redemption) and (2) may apply as a credit
Securities of a series which have been redeemed either at the election of the
Company pursuant to the terms of such Securities or through the application of
permitted optional sinking fund payments pursuant to the terms of such
Securities, in each case in satisfaction of all or any part of any sinking fund
payment with respect to the Securities of such series required to be made
pursuant to the terms of such Securities as provided for by the terms of such
series; provided that such Securities have not been previously so credited.
Such Securities shall  be received and credited for such purpose by the Trustee
at the Redemption Price specified in such Securities for redemption through
operation of the sinking fund and the amount of such sinking fund payment shall
be reduced accordingly.

                                      50

 
          Section 1203. Redemption of Securities for Sinking Fund.

          Not less than 60 days prior to each sinking fund payment date for any
series of Securities, the Company will deliver to the Trustee an Officers'
Certificate specifying the amount of the next ensuing sinking fund payment for
that series pursuant to the terms of that series, the portion thereof, if any,
which is to be satisfied by payment of cash and the portion thereof, if any,
which is to be satisfied by delivering and crediting Securities of that series
pursuant to Section 1202 and will also deliver to the Trustee any Securities to
be so delivered.  Not less than 45 days before each such sinking fund payment
date the Trustee shall select the Securities to be redeemed upon such sinking
fund payment date in the manner specified in Section 1103 and cause notice of
the redemption thereof to be given in the name of and at the expense of the
Company in the manner provided in Section 1104.  Such notice having been duly
given, the redemption of such Securities shall be made upon the terms and in the
manner stated in Sections 1106 and 1107.

          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.

                                      51

 
          IN WITNESS WHEREOF, the parties hereto have caused this Indenture to
be duly executed, and their respective corporate seals to be hereunto affixed
and attested, all as of the day and year first above written.


                                    ENSERCH CORPORATION



                                    By__________________________________________
                                       Name:  W. C. McCord
                                       Title:   Chairman

Attest:


- -------------------------------------------
Name:  M. G. Fortado
Title:   Corporate Secretary


                                    THE FIRST NATIONAL BANK OF
                                    CHICAGO



                                    By__________________________________________
                                       Name:
                                       Title:

Attest:


- -------------------------------------------
Name:
Title:

 
STATE OF TEXAS       )
                     ) ss.:
COUNTY OF DALLAS     )

          Before me, the undersigned authority, a Notary Public in and for said
County and State, on this day personally appeared W. C. McCord, Chairman of
ENSERCH Corporation, a corporation, known to me to be the person whose name is
subscribed to the foregoing instrument, and acknowledged to me that he executed
the same for the purposes and consideration therein expressed, in the capacity
therein stated, and as the act and deed of said corporation.

          Given under my hand and seal of office, this 10th day of March, 1992.



[SEAL]


                                       ---------------------------------------
                                               Notary Public in and for
                                                 Dallas County, Texas

 
STATE OF ILLINOIS    )
                     )  ss.:
COUNTY OF COOK       )

          On the ____ day of __________________, 199 , before me personally came
______________________, to me known, who, being by me duly sworn, did depose and
say that he is _______________________ of The First National Bank of Chicago,
one of the corporations described in and which executed the foregoing
instrument; that he knows the seal of said corporation; that the seal affixed to
said instrument is such corporate seal; that it was so affixed by authority of
the Board of Directors of said corporation, and that he signed his name thereto
by like authority.



[SEAL]


                                         -------------------------------------
                                                      Notary Public