EXHIBIT 4.5
 
                    IMPERIAL CREDIT MORTGAGE HOLDINGS, INC.

                                      AND

                                    Trustee

                                   Indenture

                         Dated as of __________, 199_

                         Subordinated Debt Securities

 
                               TABLE OF CONTENTS
 

                                  ARTICLE ONE


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DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION..................................   1
     SECTION 101.  Definitions...........................................................   1
          Act............................................................................   2
          Additional Amounts.............................................................   2
          Affiliate......................................................................   2
          Authenticating Agent...........................................................   2
          Authorized Newspaper...........................................................   2
          Bankruptcy Law.................................................................   2
          Bearer Security................................................................   2
          Board of Directors.............................................................   2
          Board Resolution...............................................................   2
          Business Day...................................................................   2
          CEDEL..........................................................................   3
          Commission.....................................................................   3
          Common Shares..................................................................   3
          Company........................................................................   3
          Company Request................................................................   3
          Conversion Event...............................................................   3
          Corporate Trust Office.........................................................   3
          corporation....................................................................   3
          coupon.........................................................................   3
          Custodian......................................................................   3
          Defaulted Interest.............................................................   3
          Dollar or $....................................................................   3
          ECU............................................................................   4
          Euroclear......................................................................   4
          European Communities...........................................................   4
          European Monetary System.......................................................   4
          Event of Default...............................................................   4
          Foreign Currency...............................................................   4
          GAAP...........................................................................   4
          Government Obligations.........................................................   4
          Holder.........................................................................   4
          Indenture......................................................................   4
          Indexed Security...............................................................   5
          interest.......................................................................   5
          Interest Payment Date..........................................................   5



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          Maturity.......................................................................   5
          Officers' Certificate..........................................................   5
          Opinion of Counsel.............................................................   5
          Original Issue Discount Security...............................................   5
          Outstanding....................................................................   6
          Paying Agent...................................................................   7
          Person.........................................................................   7
          Place of Payment...............................................................   7
          Predecessor Security...........................................................   7
          Preferred Shares...............................................................   7
          Redemption Date................................................................   7
          Redemption Price...............................................................   7
          Registered Security............................................................   7
          Regular Record Date............................................................   8
          Repayment Date.................................................................   8
          Repayment Price................................................................   8
          Responsible Officer............................................................   8
          Security.......................................................................   8
          Security Register and Security Registrar.......................................   8
          Significant Subsidiary.........................................................   8
          Special Record Date............................................................   8
          Stated Maturity................................................................   8
          Subsidiary.....................................................................   9
          Trust Indenture Act or TIA.....................................................   9
          Trustee........................................................................   9
          United States..................................................................   9
          United States person...........................................................   9
          Yield to Maturity..............................................................   9
     SECTION 102.  Compliance Certificates and Opinions..................................   9
     SECTION 103.  Form of Documents Delivered to Trustee................................  10
     SECTION 104.  Acts of Holders.......................................................  10
     SECTION 105.  Notices, etc., to Trustee and Company.................................  12
     SECTION 106.  Notice to Holders; Waiver.............................................  12
     SECTION 107.  Effect of Headings and Table of Contents..............................  14
     SECTION 108.  Successors and Assigns................................................  14
     SECTION 109.  Separability Clause...................................................  14
     SECTION 110.  Benefits of Indenture.................................................  14
     SECTION 111.  Governing Law.........................................................  14
     SECTION 112.  Legal Holidays........................................................  14
     SECTION 113.  Personal Immunity from Liability for Incorporators,
                   Stockholders, Etc.....................................................  14


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                                  ARTICLE TWO

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SECURITIES FORMS.........................................................................  15
     SECTION 201.  Forms of Securities...................................................  15
     SECTION 202.  Form of Trustee's Certificate of Authentication.......................  15
      .....................................................................................15
     SECTION 203.  Securities Issuable in Global Form....................................  15

                                 ARTICLE THREE

THE SECURITIES...........................................................................  16
     SECTION 301.  Amount Unlimited; Issuable in Series..................................  16
     SECTION 302.  Denominations.........................................................  20
     SECTION 303.  Execution, Authentication, Delivery and Dating........................  20
     SECTION 304.  Temporary Securities..................................................  22
     SECTION 305.  Registration, Registration of Transfer and Exchange...................  25
     SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities......................  28
     SECTION 307.  Payment of Interest; Interest Rights Preserved........................  29
     SECTION 308.  Persons Deemed Owners.................................................  31
     SECTION 309.  Cancellation..........................................................  32
     SECTION 310.........................................................................  32

                                 ARTICLE FOUR

SATISFACTION AND DISCHARGE...............................................................  32
     SECTION 401.  Satisfaction and Discharge of Indenture...............................  32
     SECTION 402.  Application of Trust Funds............................................  34

                                 ARTICLE FIVE

REMEDIES.................................................................................  34
     SECTION 501.  Events of Default.....................................................  34
     SECTION 502.  Acceleration of Maturity; Rescission and Annulment....................  35
     SECTION 503.  Collection of Indebtedness and Suits for Enforcement by Trustee.......  36
     SECTION 504.  Trustee May File Proofs of Claim......................................  37
     SECTION 505.  Trustee May Enforce Claims Without Possession of Securities or Coupons  38
     SECTION 506.  Application of Money Collected........................................  38
     SECTION 507.  Limitation on Suits...................................................  39
     SECTION 508.  Unconditional Right of Holders to Receive Principal, Premium, if any,


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                   Interest and Additional Amounts.......................................  39
     SECTION 509.  Restoration of Rights and Remedies....................................  39
     SECTION 510.  Rights and Remedies Cumulative........................................  40
     SECTION 511.  Delay or Omission Not Waiver..........................................  40
     SECTION 512.  Control by Holders of Securities......................................  40
     SECTION 513.  Waiver of Past Defaults...............................................  40
     SECTION 514.  Waiver of Usury, Stay or Extension Laws...............................  41
     SECTION 515.  Undertaking for Costs.................................................  41

                                  ARTICLE SIX

THE TRUSTEE..............................................................................  41
     SECTION 601.  Notice of Defaults....................................................  41
     SECTION 602.  Certain Rights of Trustee.............................................  42
     SECTION 603.  Not Responsible for Recitals or Issuance of Securities................  43
     SECTION 604.  May Hold Securities...................................................  43
     SECTION 605.  Money Held in Trust...................................................  43
     SECTION 606.  Compensation and Reimbursement........................................  44
     SECTION 607.  Corporate Trustee Required; Eligibility; Conflicting Interests........  44
     SECTION 608.  Resignation and Removal; Appointment of Successor.....................  45
     SECTION 609.  Acceptance of Appointment by Successor................................  46
     SECTION 610.  Merger, Conversion, Consolidation or Succession to Business...........  47
     SECTION 611.  Appointment of Authenticating Agent...................................  48

                                 ARTICLE SEVEN

HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY........................................  49
     SECTION 701.  Disclosure of Names and Addresses of Holders..........................  49
     SECTION 702.  Reports by Trustee....................................................  50
     SECTION 703.  Reports by Company....................................................  50
     SECTION 704.  Company to Furnish Trustee Names and Addresses of Holders.............  50

                                 ARTICLE EIGHT

CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE.........................................  51
     SECTION 801.  Consolidations and Mergers of Company and Sales, Leases and
                   Conveyances Permitted Subject to Certain Conditions...................  51
     SECTION 802.  Rights and Duties of Successor Corporation............................  51
     SECTION 803.  Officers' Certificate and Opinion of Counsel..........................  52


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                                 ARTICLE NINE

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SUPPLEMENTAL INDENTURES..................................................................  52
     SECTION 901.  Supplemental Indentures without Consent of Holders....................  52
     SECTION 902.  Supplemental Indentures with Consent of Holders.......................  54
     SECTION 903.  Execution of Supplemental Indentures..................................  55
     SECTION 904.  Effect of Supplemental Indentures.....................................  55
     SECTION 905.  Conformity with Trust Indenture Act...................................  55
     SECTION 906.  Reference in Securities to Supplemental Indentures....................  55

                                  ARTICLE TEN

COVENANTS................................................................................  55
     SECTION 1001.  Payment of Principal, Premium, if any, Interest and Additional
                    Amounts..............................................................  55
     SECTION 1002.  Maintenance of Office or Agency......................................  56
     SECTION 1003.  Money for Securities Payments to Be Held in Trust....................  57
     SECTION 1004.  Existence............................................................  59
     SECTION 1005.  Maintenance of Properties............................................  59
     SECTION 1006.  Payment of Taxes and Other Claims....................................  59
     SECTION 1007.  Statement as to Compliance...........................................  59
     SECTION 1008.  Additional Amounts...................................................  60
     SECTION 1009.  Waiver of Certain Covenants..........................................  60

                                ARTICLE ELEVEN

REDEMPTION OF SECURITIES.................................................................  61
     SECTION 1101.  Applicability of Article.............................................  61
     SECTION 1102.  Election to Redeem; Notice to Trustee................................  61
     SECTION 1103.  Selection by Trustee of Securities to Be Redeemed....................  61
     SECTION 1104.  Notice of Redemption.................................................  62
     SECTION 1105.  Deposit of Redemption Price..........................................  63
     SECTION 1106.  Securities Payable on Redemption Date................................  63
     SECTION 1107.  Securities Redeemed in Part..........................................  64

                                ARTICLE TWELVE

SINKING FUNDS............................................................................  65
     SECTION 1201.  Applicability of Article.............................................  65
     SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities................  65
     SECTION 1203.  Redemption of Securities for Sinking Fund............................  65


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                               ARTICLE THIRTEEN

REPAYMENT AT THE OPTION OF HOLDERS.......................................................  66
     SECTION 1301.  Applicability of Article.............................................  66
     SECTION 1302.  Repayment of Securities..............................................  66
     SECTION 1303.  Exercise of Option...................................................  66
     SECTION 1304.  When Securities Presented for Repayment Become Due and Payable.......  67
     SECTION 1305.  Securities Repaid in Part............................................  68

                               ARTICLE FOURTEEN

DEFEASANCE AND COVENANT DEFEASANCE.......................................................  68
     SECTION 1401.  Applicability of Article; Company's Option to Effect Defeasance or
                    Covenant Defeasance..................................................  68
     SECTION 1402.  Defeasance and Discharge.............................................  68
     SECTION 1403.  Covenant Defeasance..................................................  69
     SECTION 1404.  Conditions to Defeasance or Covenant Defeasance......................  69
     SECTION 1405.  Deposited Money and Government Obligations to Be Held in Trust; Other
                    Miscellaneous Provisions.............................................  71

                                      vi

 
                    IMPERIAL CREDIT MORTGAGE HOLDINGS, INC.

Reconciliation and tie between Trust Indenture Act of 1939 (the "1939 Act") and
Indenture, dated as of __________, 199__.
                               



Trust Indenture Act Section                Indenture Section
- ---------------------------                ----------------- 
                                        
310(a)(1).............................               607
   (a)(2).............................               607
   (b)................................          607, 608
312(a)................................               704
312(c)................................               701
313(a)................................               702
   (c)................................               702
314(a)................................               703
   (a)(4).............................              1009
   (c)(1).............................               102
   (c)(2).............................               102
   (e)................................               102
315(b)................................               601
316(a) (last sentence)................               101 ("Outstanding")
   (a)(1)(A)..........................               512
   (a)(1)(B)..........................               513
   (b)................................               508
317(a)(1).............................               503
   (a)(2).............................               504
318(a)................................               111
   (c)................................               111


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

     Attention should also be directed to Section 318(c) of the 1939 Act, which
provides that the provisions of Sections 310 to and including 317 of the 1939
Act are a part of and govern every qualified indenture, whether or not
physically contained therein.

 
     INDENTURE, dated as of ___________, between IMPERIAL CREDIT MORTGAGE
HOLDINGS, INC., a corporation organized under the laws of Maryland (hereinafter
called the "Company"), having its principal office at 20371 Irvine Avenue, Santa
Ana Heights, California 92707, ____________________, a corporation organized
under the laws of ______________, as Trustee hereunder (hereinafter called the
"Trustee"), having its Corporate Trust Office at
________________________________.

                            RECITALS OF THE COMPANY

     The Company deems it necessary to issue from time to time for its lawful
purposes senior debt securities (hereinafter called the "Securities") evidencing
its unsecured and unsubordinated indebtedness, and has duly authorized the
execution and delivery of this Indenture to provide for the issuance from time
to time of the Securities, unlimited as to principal amount, to bear interest at
the rates or formulas, to mature at such times and to have such other provisions
as shall be fixed as hereinafter provided.

     This Indenture is subject to the provisions of the Trust Indenture Act of
1939, as amended ("TIA"), that are deemed to be incorporated into this Indenture
and shall, to the extent applicable, be governed by such provisions.

     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 ("Holders"), it is mutually covenanted and agreed, for
the equal and proportionate benefit of all Holders of the Securities, as
follows:

                                  ARTICLE ONE

            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 TIA, either
     directly or by reference therein, have the meanings assigned to them
     therein, and the terms "cash transaction" and "self-liquidating paper", as
     used in TIA Section 311, shall have the meanings assigned to them in the
     rules of the Commission adopted under the TIA;

                                       1

 
     (3) all accounting terms not otherwise defined herein have the meanings
     assigned to them in accordance with GAAP; 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.

"Additional Amounts" means any additional amounts which are required by a
Security or by or pursuant to a Board Resolution, under circumstances specified
therein, to be paid by the Company in respect of certain taxes imposed on
certain Holders and which are owing to such Holders.

"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 authenticating agent appointed by the Trustee
pursuant to Section 611.

"Authorized Newspaper" means a newspaper, printed in the English language or in
an official language of the country of publication, customarily published on
each Business Day, whether or not published on Saturdays, Sundays or holidays,
and of general circulation in each place in connection with which the term is
used or in the financial community of each such place.  Whenever successive
publications are required to be made in Authorized Newspapers, the successive
publications may be made in the same or in different Authorized Newspapers in
the same city meeting the foregoing requirements and in each case on any
Business Day.

"Bankruptcy Law" has the meaning specified in Section 501.

"Bearer Security" means any Security established pursuant to Section 201 which
is payable to bearer.

"Board of Directors" means the board of directors of the Company, the executive
committee or any committee of that board duly authorized to act hereunder.

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

"Business Day", when used with respect to any Place of Payment or any other
particular location referred to in this Indenture or in the Securities, means,
unless otherwise specified with respect to 

                                       2

 
any Securities pursuant to Section 301, any day, other than a Saturday or
Sunday, that is neither a legal holiday nor a day on which banking institutions
in that Place of Payment or particular location are authorized or required by
law, regulation or executive order to close.

"CEDEL" means Centrale de Livraison de Valeurs Mobilieres, S.A., or its
successor.

"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 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 on such date.

"Common Shares" means, with respect to any Person, capital stock issued by such
Person other than Preferred Stock.

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

"Company Request" and "Company Order" mean, respectively, a written request or
order signed in the name of the Company by one trustee and one executive officer
of the Company, and delivered to the Trustee.

"Conversion Event" means the cessation of use of (i) a Foreign Currency both by
the government of the country which issued such currency and for the settlement
of transactions by a central bank or other public institutions of or within the
international banking community, (ii) the ECU both within the European Monetary
System and for the settlement of transactions by public institutions of or
within the European Communities or (iii) any currency unit (or composite
currency) other than the ECU for the purposes for which it was established.

"Corporate Trust Office" means the office of the Trustee at which, at any
particular time, its corporate trust business shall be principally administered,
which office at the date hereof is located at _________________________________.

"corporation" includes corporations, associations, partnerships, companies and
business trusts.

"coupon" means any interest coupon appertaining to a Bearer Security.

"Custodian" has the meaning specified in Section 501.

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

"Dollar" or "$" means a dollar or other equivalent unit in such coin or
currency of the United States of America as at the time shall be legal tender
for the payment of public and private debts.

                                       3

 
"ECU" means the European Currency Unit as defined and revised from time to time
by the Council of the European Communities.

"Euroclear" means Morgan Guaranty Trust Company of New York, Brussels Office,
or its successor as operator of the Euroclear System.

"European Communities" means the European Economic Community, the European Coal
and Steel Community and the European Atomic Energy Community.

"European Monetary System" means the European Monetary System established by
the Resolution of December 5, 1978 of the Council of the European Communities.

"Event of Default" has the meaning specified in Article Five.

"Foreign Currency" means any currency, currency unit or composite currency,
including, without limitation, the ECU issued by the government of one or more
countries other than the United States of America or by any recognized
confederation or association of such governments.

"GAAP" means generally accepted accounting principles, as in effect from time
to time, as used in the United States applied on a consistent basis.

"Government Obligations" means securities which are (i) direct obligations of
the United States of America or the government which issued the Foreign Currency
in which the Securities of a particular series are payable, 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 or such government which issued the foreign currency in
which the Securities of such series are payable, the payment of which is
unconditionally guaranteed as a full faith and credit obligation by the United
States of America or such other government, which, in either case, 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 Government Obligation or a specific payment of interest on
or principal of any such Government Obligation held by such custodian for the
account 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 Government Obligation or the specific payment of
interest on or principal of the Government Obligation evidenced by such
depository receipt.

"Holder" means, in the case of a Registered Security, the Person in whose name
a Security is registered in the Security Register and, in the case of a Bearer
Security, the bearer thereof and, when used with respect to any coupon, shall
mean the bearer thereof.

"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 

                                       4

 
the applicable provisions hereof, and shall 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, "Indenture" shall mean, with respect to any one or more series
of Securities for which 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 the 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.

"Indexed Security" means a Security the terms of which provide that the
principal amount thereof payable at Stated Maturity may be more or less than the
principal face amount thereof at original issuance.

"interest", when used with respect to an Original Issue Discount Security which
by its terms bears interest only after Maturity, shall mean interest payable
after Maturity, and, when used with respect to a Security which provides for the
payment of Additional Amounts pursuant to Section 1008, includes such Additional
Amounts.

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

"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, notice of redemption, notice of option to elect
repayment or otherwise.

"Officers' Certificate" means a certificate signed by the Chairman of the Board
of Directors, 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 for
the Company or who may be an employee of or other counsel for the Company and
who shall be satisfactory to the Trustee.

"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.

                                       5

 
"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, or portions thereof, for whose payment or redemption or
     repayment at the option of the Holder 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 and any coupons appertaining thereto, 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;

     (iii) Securities, except to the extent provided in Sections 1402 and 1403,
     with respect to which the Company has effected defeasance and/or covenant
     defeasance as provided in Article Fourteen;

     (iv)  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; and

     (v)   Securities converted into Common Shares or Preferred Shares pursuant
     to or in accordance with this Indenture if the terms of such Securities
     provide for convertibility pursuant to Section 301;

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 or are present at
a meeting of Holders for quorum purposes, and for the purpose of making the
calculations required by TIA Section 313, (i) the principal amount of an
Original Issue Discount Security that may be counted in making such
determination or calculation and that shall be deemed to be Outstanding for such
purpose shall be equal to the amount of principal thereof that would be (or
shall have been declared to be) due and payable, at the time of such
determination, upon a declaration of acceleration of the maturity thereof
pursuant to Section 502, (ii) the principal amount of any Security denominated
in a Foreign Currency that may be counted in making such determination or
calculation and that shall be deemed Outstanding for such purpose shall be equal
to the Dollar equivalent, determined pursuant to Section 301 as of the date such
Security is originally issued by the Company, of the principal amount (or, in
the case of an Original Issue Discount Security, the Dollar equivalent as of
such date of original issuance of the amount determined as provided in clause
(i) above) of such Security, (iii) the principal amount of any Indexed Security
that may be counted in making such determination or calculation and that shall
be deemed outstanding 

                                       6

 
for such purpose shall be equal to the principal face amount of such Indexed
Security at original issuance, unless otherwise provided with respect to such
Security pursuant to Section 301, and (iv) 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 making such
calculation or in relying upon any such request, demand, authorization,
direction, notice, 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 or coupons 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 or within any
series, means the place or places where the principal of (and premium, if any)
and interest on such Securities are payable as specified as contemplated by
Sections 301 and 1002.

"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 or a Security to which a
mutilated, destroyed, lost or stolen coupon appertains shall be deemed to
evidence the same debt as the mutilated, destroyed, lost or stolen Security or
the Security to which the mutilated, destroyed, lost or stolen coupon
appertains.

"Preferred Shares" means, with respect to any Person, capital shares issued by
such Person that are entitled to a preference or priority over any other capital
shares issued by such Person upon any distribution of such Person's assets,
whether by dividend or upon liquidation.

"Redemption Date", when used with respect to any Security to be redeemed, in
whole or in part, 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.

"Registered Security" shall mean any Security which is registered in the
Security Register.

                                       7

 
"Regular Record Date" for the interest payable on any Interest Payment Date on
the Registered Securities of or within any series means the date specified for
that purpose as contemplated by Section 301, whether or not a Business Day.

"Repayment Date" means, when used with respect to any Security to be repaid at
the option of the Holder, the date fixed for such repayment by or pursuant to
this Indenture.

"Repayment Price" means, when used with respect to any Security to be repaid at
the option of the Holder, the price at which it is to be repaid by or pursuant
to this Indenture.

"Responsible Officer", when used with respect to the Trustee, means the
chairman or vice-chairman of the board of directors, the chairman or vice-
chairman of the executive committee of the board of directors, the president,
any vice president (whether or not designated by a number or a word or words
added before or after the title "vice president") the secretary, any assistant
secretary, the treasurer, any assistant treasurer, any corporate trust officer,
the controller or any other officer of the Trustee customarily performing
functions similar to those performed by any of the above designated officers and
also means, with respect to a particular corporate trust matter, any other
officer to whom such matter is referred because of such officer's knowledge and
familiarity with the particular subject.

"Security" has the meaning stated in the first recital of this Indenture and,
more particularly, means any Security or 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.

"Significant Subsidiary" means any Subsidiary which is a "significant
subsidiary" (as defined in Article I, Rule 1-02 of Regulation S-X, promulgated
under the Securities Act of 1933) of the Company.

"Special Record Date" for the payment of any Defaulted Interest on the
Registered Securities of or within any series means a date fixed by the Trustee
pursuant to Section 307.

"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
or a coupon representing such installment of interest as the fixed date on which
the principal of such Security or such installment of principal or interest is
due and payable.

                                       8

 
"Subsidiary" means a corporation a majority of the outstanding voting stock of
which is owned, directly or indirectly, by the Company or by one or more other
Subsidiaries of the Company.  For the purposes of this definition, "voting
stock" means stock having 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.

"Trust Indenture Act" or "TIA" means the Trust Indenture Act of 1939, as
amended and as in force at the date as of which this Indenture was executed,
except as provided in Section 905.

"Trustee" means the Person named as the "Trustee" in the first paragraph of
this Indenture 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; provided, however, that if
at any time there is more than one such Person, "Trustee" as used with respect
to the Securities of any series shall mean only the Trustee with respect to
Securities of that series.

"United States" means, unless otherwise specified with respect to any
Securities pursuant to Section 301, the United States of America (including the
states and the District of Columbia), its territories, its possessions and other
areas subject to its jurisdiction.

"United States person" means, unless otherwise specified with respect to any
Securities pursuant to Section 301, an individual who is a citizen or resident
of the United States, a corporation, partnership or other entity created or
organized in or under the laws of the United States or an estate or trust the
income of which is subject to United States federal income taxation regardless
of its source.

"Yield to Maturity" means the yield to maturity, computed at the time of
issuance of a Security (or, if applicable, at the most recent redetermination of
interest on such Security) and as set forth in such Security in accordance with
generally accepted United States bond yield computation principles.

      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 an Officers'
Certificate stating that all conditions precedent, if any, provided for in this
Indenture relating to the proposed action have been complied with and an Opinion
of Counsel stating that in the opinion of such counsel all such conditions
precedent, if any, have been complied with, except that in the case of any such
application or request as to which the furnishing of such documents is
specifically required by any provision of this Indenture relating to such
particular application or request, no additional certificate or opinion need be
furnished.

     Every certificate or opinion with respect to compliance with a condition or
covenant provided for in this Indenture (including certificates delivered
pursuant to Section 1008) shall include:

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

                                       9

 
     (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 condition or covenant 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 as 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 an Opinion of Counsel, or a
certificate or representations by counsel, unless such officer knows, or in the
exercise of reasonable care should know, that the opinion, certificate or
representations with respect to the matters upon which his certificate or
opinion is based are erroneous.  Any such Opinion of Counsel or certificate or
representations 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 as to such factual matters is in the
possession of the Company, unless such counsel knows that the certificate or
opinion or representations as 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.  (a) Any request, demand, authorization,
                    ---------------                                          
direction, notice, consent, waiver or other action provided by this Indenture to
be given or taken by Holders of the Outstanding Securities of all series or one
or more series, as the case may be, may be embodied in and evidenced by one or
more instruments of substantially similar tenor signed by such Holders in person
or by agents duly appointed in writing.  If Securities of a series are issuable
as Bearer Securities, any request, demand, authorization, direction, notice,
consent, waiver or other action provided by this Indenture to be given or taken
by Holders of Securities of such series may, alternatively, be embodied in and
evidenced by the record of Holders of Securities of such series voting in favor
thereof, either in person or by proxies duly appointed in writing, at any
meeting of Holders of Securities of such series duly called and held in
accordance with the provisions of the supplemental indenture with respect to
such series, or a combination of such instruments and any such record. Except as
herein otherwise expressly provided, such action shall become effective when

                                       10

 
such instrument or instruments or record or both are delivered to the Trustee
and, where it is hereby expressly required, to the Company. Such instrument or
instruments and any such record (and the action embodied therein and evidenced
thereby) are herein sometimes referred to as the "Act" of the Holders signing
such instrument or instruments or so voting at any such meeting. Proof of
execution of any such instrument or of a writing appointing any such agent, or
of the holding by any Person of a Security, shall be sufficient for any purpose
of this Indenture and conclusive in favor of the Trustee and the Company and any
agent of the Trustee or the Company, if made in the manner provided in this
Section.

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

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

     (d) The ownership of Bearer Securities may be proved by the production of
     such Bearer Securities or by a certificate executed, as depositary, by any
     trust company, bank, banker or other depositary, wherever situated, if such
     certificate shall be deemed by the Trustee to be satisfactory, showing that
     at the date therein mentioned such Person had on deposit with such
     depositary, or exhibited to it, the Bearer Securities therein described; or
     such facts may be proved by the certificate or affidavit of the Person
     holding such Bearer Securities, if such certificate or affidavit is deemed
     by the Trustee to be satisfactory. The Trustee and the Company may assume
     that such ownership of any Bearer Security continues until (1) another
     certificate or affidavit bearing a later date issued in respect of the same
     Bearer Security is produced, or (2) such Bearer Security is produced to the
     Trustee by some other Person, or (3) such Bearer Security is surrendered in
     exchange for a Registered Security, or (4) such Bearer Security is no
     longer Outstanding. The ownership of Bearer Securities may also be proved
     in any other manner which the Trustee deems sufficient.

     (e) If the Company shall solicit from the Holders of Registered Securities
     any request, demand, authorization, direction, notice, consent, waiver or
     other Act, the Company may, at its option, in or pursuant to a Board
     Resolution, fix in advance a record date for the determination of Holders
     entitled to give such request, demand, authorization, direction, notice,
     consent, waiver or other Act, but the Company shall have no obligation to
     do so. Notwithstanding TIA Section 316(c), such record date shall be the
     record date specified in or pursuant to such Board Resolution, which shall
     be a date not earlier than the date 30 days prior to the first solicitation
     of Holders generally in connection therewith and not later than 

                                       11

 
     the date such solicitation is completed. If such a record date is fixed,
     such request, demand, authorization, direction, notice, consent, waiver or
     other Act may be given before or after such record date, but only the
     Holders of record at the close of business on such record date shall be
     deemed to be Holders for the purposes of determining whether Holders of the
     requisite proportion of Outstanding Securities have authorized or agreed or
     consented to such request, demand, authorization, direction, notice,
     consent, waiver or other Act, and for that purpose the Outstanding
     Securities shall be computed as of such record date; provided that no such
     authorization, agreement or consent by the Holders on such record date
     shall be deemed effective unless it shall become effective pursuant to the
     provisions of this Indenture not later than eleven months after the record
     date.

     In the absence of any such record date fixed by the Company, regardless as
to whether a solicitation of the Holders is occurring on behalf of the Company
or any Holder, the Trustee may, at its option, fix in advance a record date for
the determination of such Holders entitled to give such request, demand,
authorization, direction, notice, consent, waiver or other Act, but the Trustee
shall have no obligation to do so. Any such record date shall be a date not more
than 30 days prior to the first solicitation of Holders generally in connection
therewith no later than the date of such solicitation.

     (f) Any request, demand, authorization, direction, notice, consent, waiver
     or other Act of the Holder of any Security shall bind every future Holder
     of the same Security and the Holder of every Security issued upon the
     registration of transfer thereof or in exchange therefor or in lieu thereof
     in respect of anything done, omitted or suffered to be done by the Trustee,
     any Security Registrar, any Paying Agent, any Authenticating Agent 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 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 Indenture or at any other address previously furnished in
     writing to the Trustee by the Company.

      SECTION 106.  Notice to Holders; Waiver.  Where this Indenture provides
                    -------------------------                                
for notice of any event to Holders of Registered Securities by the Company or
the Trustee, such notice shall be sufficiently given (unless otherwise herein
expressly provided) if in writing and mailed, first-class 

                                       12

 
postage prepaid, to each such Holder affected by such event, at his address as
it appears in the Security Register, not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. In any
case where notice to Holders of Registered Securities 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 of Registered Securities or the sufficiency of any notice to
Holders of Bearer Securities given as provided herein. Any notice mailed to a
Holder in the manner herein prescribed shall be conclusively deemed to have been
received by such Holder, whether or not such Holder actually receives such
notice.

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

     Except as otherwise expressly provided herein or otherwise specified with
respect to any Securities pursuant to Section 301, where this Indenture provides
for notice to Holders of Bearer Securities of any event, such notice shall be
sufficiently given if published in an Authorized Newspaper in The City of New
York and in such other city or cities as may be specified in such Securities on
a Business Day, such publication to be not later than the latest date, and not
earlier than the earliest date, prescribed for the giving of such notice. Any
such notice shall be deemed to have been given on the date of such publication
or, if published more than once, on the date of the first such publication.

     If by reason of the suspension of publication of any Authorized Newspaper
or Authorized Newspapers or by reason of any other cause it shall be
impracticable to publish any notice to Holders of Bearer Securities as provided
above, then such notification to Holders of Bearer Securities as shall be given
with the approval of the Trustee shall constitute sufficient notice to such
Holders for every purpose hereunder.  Neither the failure to give notice by
publication to any particular Holder of Bearer Securities as provided above, nor
any defect in any notice so published, shall affect the sufficiency of such
notice with respect to other Holders of Bearer Securities or the sufficiency of
any notice to Holders of Registered Securities given as provided herein.

     Any request, demand, authorization, direction, notice, consent or waiver
required or permitted under this Indenture shall be in the English language,
except that any published notice may be in an official language of the country
of publication.

     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.

                                       13

 
      SECTION 107.  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 108.  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 109.  Separability Clause.  In case any provision in this
                    -------------------                                
Indenture or in any Security or coupon shall be invalid, illegal or
unenforceable, the validity, legality and enforceability of the remaining
provisions shall not in any way be affected or impaired thereby.

      SECTION 110.  Benefits of Indenture.  Nothing in this Indenture or in the
                    ---------------------                                      
Securities or coupons, express or implied, shall give to any Person, other than
the parties hereto, any Security Registrar, any Paying Agent, any Authenticating
Agent and their successors hereunder and the Holders any benefit or any legal or
equitable right, remedy or claim under this Indenture.

      SECTION 111.  Governing Law.  This Indenture and the Securities and
                    -------------                                        
coupons shall be governed by and construed in accordance wit the law of the
State of New York.  This Indenture is subject to the provisions of the TIA that
are required to be part of this Indenture and shall, to the extent applicable,
be governed by such provisions.

      SECTION 112.  Legal Holidays.  In any case where any Interest Payment
                    --------------                                         
Date, Redemption Date, Repayment Date, sinking fund payment date, Stated
Maturity or Maturity of any Security shall not be a Business Day at any Place of
Payment, then (notwithstanding any other provision of this Indenture or any
Security or coupon other than a provision in the Securities of any series which
specifically states that such provision shall apply in lieu hereof), payment of
interest or any Additional Amounts 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, Redemption Date, Repayment Date or
sinking fund payment date, or at the Stated Maturity or Maturity, provided that
no interest shall accrue on the amount so payable for the period from and after
such Interest Payment Date, Redemption Date, Repayment Date, sinking fund
payment date, Stated Maturity or Maturity, as the case may be.

      SECTION 113.  Personal Immunity from Liability for Incorporators,
                    ---------------------------------------------------
Stockholders, Etc.  No recourse shall be had for the payment of the principal of
- ------------------                                                              
or premium, if any, or interest, if any, on any Security, or for any claim based
thereon, or otherwise in respect of any Security, or based on or in respect of
this Indenture or any indenture supplemental hereto, against any incorporator,
or against any past, present or future stockholder, director of officers, as
such, of the Company or of any successor corporation, whether by virtue of any
constitution, statute or rule of law, or by the enforcement of any assessment or
penalty or otherwise, all such liability being expressly waived and released as
a condition of, and as consideration for, the execution of this Indenture and
the issue of Securities.

                                       14

 
                                  ARTICLE TWO

                               SECURITIES FORMS

      SECTION 201.  Forms of Securities.  The Registered Securities, if any, of
                    -------------------                                        
each series and the Bearer Securities, if any, of each series and related
coupons shall be in substantially the forms as shall be established in one or
more indentures supplemental hereto or approved from time to time by or pursuant
to a Board Resolution in accordance with Section 301, shall have such
appropriate insertions, omissions, substitutions and other variations as are
required or permitted by this Indenture or any indenture supplemental hereto,
and may have such letters, numbers or other marks of identification or
designation and such legends or endorsements placed thereon as the Company may
deem appropriate and as are not inconsistent with the provisions of this
Indenture, or as may be required to comply with any law or with any rule or
regulation made pursuant thereto or with any rule or regulation of any stock
exchange on which the Securities may be listed, or to conform to usage.

     Unless otherwise specified as contemplated by Section 301, Bearer
Securities shall have interest coupons attached.

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

      SECTION 202.  Form of Trustee's Certificate of Authentication.  Subject to
                    -----------------------------------------------             
Section 611, the Trustee's certificate 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.

                                    __________________, as Trustee

                                    By:________________________________
                                         Authorized Signatory


      SECTION 203.  Securities Issuable in Global Form.  If Securities of or
                    ----------------------------------                      
within a series are issuable in global form, as specified as contemplated by
Section 301, then, notwithstanding clause (8) of Section 301 and the provisions
of Section 302, any such Security shall represent such of the Outstanding
Securities of such series as shall be specified therein and may provide that it
shall represent the aggregate amount of Outstanding Securities of such series
from time to time endorsed thereon and that the aggregate amount of Outstanding
Securities of such series represented thereby may from time to time be increased
or decreased to reflect exchanges. Any endorsement of a 

                                       15

 
Security in global form to reflect the amount, or any increase or decrease in
the amount, of Outstanding Securities represented thereby shall be made by the
Trustee in such manner and upon instructions given by such Person or Persons as
shall be specified therein or in the Company Order to be delivered to the
Trustee pursuant to Section 303 or 304. Subject to the provisions of Section 303
and, if applicable, Section 304, the Trustee shall deliver and redeliver any
Security in permanent global form in the manner and upon instructions given by
the Person or Persons specified therein or in the applicable Company Order. If a
Company Order pursuant to Section 303 or 304 has been, or simultaneously is,
delivered, any instructions by the Company with respect to endorsement or
delivery or redelivery of a Security in global form shall be in writing but need
not comply with Section 102 and need not be accompanied by an Opinion of
Counsel.

     The provisions of the last sentence of Section 303 shall apply to any
Security represented by a Security in global form if such Security was never
issued and sold by the Company and the Company delivers to the Trustee the
Security in global form together with written instructions (which need not
comply with Section 102 and need not be accompanied by an Opinion of Counsel)
with regard to the reduction in the principal amount of Securities represented
thereby, together with the written statement contemplated by the last sentence
of Section 303.

     Notwithstanding the provisions of Section 307, unless otherwise specified
as contemplated by Section 301, payment of principal of and any premium and
interest on any Security in permanent global form shall be made to the Person or
Persons specified therein.

     Notwithstanding the provisions of Section 308 and except as provided in the
preceding paragraph, the Company, the Trustee and any agent of the Company and
the Trustee shall treat as the Holder of such principal amount of Outstanding
Securities represented by a permanent global Security (i) in the case of a
permanent global Security in registered form, the Holder of such permanent
global Security in registered form, or (ii) in the case of a permanent global
Security in bearer form, Euroclear or CEDEL.

                                 ARTICLE THREE

                                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 one or more Board Resolutions or pursuant to authority granted by
one or more Board Resolutions 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, any or all of the following, as applicable (each of
which (except for the matters set forth in clauses (1), (2) and (15) below), if
so provided, may be determined from time to time by the Company with respect to
unissued Securities of the series when issued from time to time):

                                       16

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

     (2) any limit upon the aggregate principal amount of the Securities of the
     series that 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, 1107 or 1305);

     (3) the date or dates, or the method by which such date or dates will be
     determined, on which the principal of the Securities of the series shall be
     payable;

     (4) the rate or rates at which the Securities of the series shall bear
     interest, if any, or the method by which such rate or rates shall be
     determined, the date or dates from which such interest shall accrue or the
     method by which such date or dates shall be determined, the Interest
     Payment Dates on which such interest will be payable and the Regular Record
     Date, if any, for the interest payable on any Registered Security on any
     Interest Payment Date, or the method by which such date shall be
     determined, and the basis upon which interest shall be calculated if other
     than that of a 360-day year of twelve 30-day months;

     (5) the place or places, if any, other than or in addition to the Borough
     of Manhattan, The City of New York, where the principal of (and premium, if
     any), interest, if any, on, and Additional Amounts, if any, payable in
     respect of, Securities of the series shall be payable, any Registered
     Securities of the series may be surrendered for registration of transfer,
     exchange or conversion and notices or demands to or upon the Company in
     respect of the Securities of the series and this Indenture may be served;

     (6) the period or periods within which, the price or prices at which, the
     currency or currencies, currency unit or units or composite currency or
     currencies in which, and other terms and conditions upon which Securities
     of the series may be redeemed, in whole or in part, at the option of the
     Company, if the Company is to have the option;

     (7) the obligation, if any, of the Company to redeem, repay or purchase
     Securities of the series pursuant to any sinking fund or analogous
     provision or at the option of a Holder thereof, and the period or periods
     within which or the date or dates on which, the price or prices at which,
     the currency or currencies, currency unit or units or composite currency or
     currencies in which, and other terms and conditions upon which Securities
     of the series shall be redeemed, repaid or purchased, in whole or in part,
     pursuant to such obligation;

     (8) if other than denominations of $1,000 and any integral multiple
     thereof, the denominations in which any Registered Securities of the series
     shall be issuable and, if other than the denomination of $5,000, the
     denomination or denominations in which any Bearer Securities of the series
     shall be issuable;

                                       17

 
     (9)  if other than the Trustee, the identity of each Security Registrar
     and/or Paying Agent;

     (10) if other than the principal amount thereof, the portion of the
     principal amount of Securities of the series that shall be payable upon
     declaration of acceleration of the Maturity thereof pursuant to Section 502
     or, if applicable, the portion of the principal amount of Securities of the
     series that is convertible in accordance with the provisions of this
     Indenture, or the method by which such portion shall be determined;

     (11) if other than Dollars, the Foreign Currency or Currencies in which
     payment of the principal of (and premium, if any) or interest or Additional
     Amounts, if any, on the Securities of the series shall be payable or in
     which the Securities of the series shall be denominated;

     (12) whether the amount of payments of principal of (and premium, if any)
     or interest, if any, on the Securities of the series may be determined with
     reference to an index, formula or other method (which index, formula or
     method may be based, without limitation, on one or more currencies,
     currency units, composite currencies, commodities, equity indices or other
     indices), and the manner in which such amounts shall be determined;

     (13) whether the principal of (and premium, if any) or interest or
     Additional Amounts, if any, on the Securities of the series are to be
     payable, at the election of the Company or a Holder thereof, in a currency
     or currencies, currency unit or units or composite currency or currencies
     other than that in which such Securities are denominated or stated to be
     payable, the period or periods within which, and the terms and conditions
     upon which, such election may be made, and the time and manner of, and
     identity of the exchange rate agent with responsibility for, determining
     the exchange rate between the currency or currencies, currency unit or
     units or composite currency or currencies in which such Securities are
     denominated or stated to be payable and the currency or currencies,
     currency unit or units or composite currency or currencies in which such
     Securities are to be so payable;

     (14) provisions, if any, granting special rights to the Holders of
     Securities of the series upon the occurrence of such events as may be
     specified;

     (15) any deletions from, modifications of or additions to the Events of
     Default or covenants of the Company with respect to Securities of the
     series, whether or not such Events of Default or covenants are consistent
     with the Events of Default or covenants set forth herein;

     (16) whether Securities of the series are to be issuable as Registered
     Securities, Bearer Securities (with or without coupons) or both, any
     restrictions applicable to the offer, sale or delivery of Bearer Securities
     and the terms upon which Bearer Securities of the series may be exchanged
     for Registered Securities of the series and vice versa (if permitted by
     applicable laws and regulations), whether any Securities of the series are
     to be issuable initially in temporary global form and whether any
     Securities of the series are to be issuable 

                                       18

 
     in permanent global form with or without coupons and, if so, whether
     beneficial owners of interests in any such permanent global Security may
     exchange such interests for Securities of such series and of like tenor of
     any authorized form and denomination and the circumstances under which any
     such exchanges may occur, if other than in the manner provided in Section
     305, and, if Registered Securities of the series are to be issuable as a
     global Security, the identity of the depositary for such series;

     (17) the date as of which any Bearer Securities of the series and any
     temporary global Security representing Outstanding Securities of the series
     shall be dated if other than the date of original issuance of the first
     Security of the series to be issued;

     (18) the Person to whom any Interest on any Registered 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, the manner in
     which, or the Person to whom, any interest on any Bearer Security of the
     series shall be payable, if otherwise than upon presentation and surrender
     of the coupons appertaining thereto as they severally mature, and the
     extent to which, or the manner in which, any interest payable on a
     temporary global Security on an Interest Payment Date will be paid if other
     than in the manner provided in Section 304;

     (19) the applicability, if any, of Sections 1402 and/or 1403 to the
     Securities of the series and any provisions in modification of, in addition
     to or in lieu of any of the provisions of Article Fourteen;

     (20) if the Securities of such series are to be issuable in definitive form
     (whether upon original issue or upon exchange of a temporary Security of
     such series) only upon receipt of certain certificates or other documents
     or satisfaction of other conditions, then the form and/or terms of such
     certificates, documents or conditions;

     (21) if the Securities of the series are to be issued upon the exercise of
     warrants, the time, manner and place for such Securities to be
     authenticated and delivered;

     (22) whether and under what circumstances the Company will pay Additional
     Amounts on the Securities of the series to any Holder who is not a United
     States person (including any modification to the definition of such term)
     in respect of any tax, assessment or governmental charge and, if so,
     whether the Company will have the option to redeem such Securities rather
     than pay such Additional Amounts (and the terms of any such option);

     (23) the obligation, if any, of the Company to permit the conversion of the
     Securities of such series into the Company's Common Shares or Preferred
     Shares, as the case may be, and 

                                       19

 
     the terms and conditions upon which such conversion shall be effected
     (including, without limitation, the initial conversion price or rate, the
     conversion period, any adjustment of the applicable conversion price and
     any requirements relative to the reservation of such shares for purposes of
     conversion; and

     (24) any other terms of the series (which terms shall not be inconsistent
     with the provisions of this Indenture).

     All Securities of any one series and the coupons appertaining to any Bearer
Securities of such series shall be substantially identical except, in the case
of Registered Securities, as to denomination and except as may otherwise be
provided in or pursuant to such Board Resolution (subject to Section 303) and
set forth in such Officers' Certificate or in any such indenture supplemental
hereto. All Securities of any one series need not be issued at the same time
and, unless otherwise provided, a series may be reopened, without the consent of
the Holders, for issuances of additional Securities of such series.

     If any of the terms of the Securities of any series are established by
action taken pursuant to one or more Board Resolutions, a copy of an appropriate
record of such action(s) 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 Officers' Certificate setting forth the terms of the Securities
of such series.

      SECTION 302.  Denominations.  The Securities of each series shall be
                    -------------                                         
issuable in such denominations as shall be specified as contemplated by Section
301. With respect to Securities of any series denominated in Dollars, in the
absence of any such provisions with respect to the Securities of any series, the
Registered Securities of such series, other than Registered Securities issued in
global form (which may be of any denomination), shall be issuable in
denominations of $1,000 and any integral multiple thereof and the Bearer
Securities of such series, other than Bearer Securities issued in global form
(which may be of any denomination), shall be issuable in a denomination of
$5,000.

      SECTION 303.  Execution, Authentication, Delivery and Dating.  The
                    ----------------------------------------------      
Securities and any coupons appertaining thereto shall be executed on behalf of
the Company by its Chairman of the Board, its President or one of its Vice
Presidents, under its corporate seal reproduced thereon, and attested by its
Secretary or one of its Assistant Secretaries. The signature of any of these
officers on the Securities and coupons may be manual or facsimile signatures of
the present or any future such authorized officer and may be imprinted or
otherwise reproduced on the Securities.

     Securities or coupons 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 or coupons.

     At any time and from time to time after the execution and delivery of this
Indenture, the 

                                       20

 
Company may deliver Securities of any series, together with any coupon
appertaining thereto, 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; provided, however, that, in connection
with its original issuance, no Bearer Security shall be mailed or otherwise
delivered to any location in the United States; and provided further that,
unless otherwise specified with respect to any series of Securities pursuant to
Section 301, a Bearer Security may be delivered in connection with its original
issuance only if the Person entitled to receive such Bearer Security shall have
furnished a certificate to Euroclear or CEDEL, as the case may be, in the form
set forth in Exhibit A-I to this Indenture or such other certificate as may be
specified with respect to any series of Securities pursuant to Section 301,
dated no earlier than 15 days prior to the earlier of the date on which such
Bearer Security is delivered and the date on which any temporary Security first
becomes exchangeable for such Bearer Security in accordance with the terms of
such temporary Security and this Indenture. If any Security shall be represented
by a permanent global Bearer Security, then, for purposes of this Section and
Section 304, the notation of a beneficial owner's interest therein upon original
issuance of such Security or upon exchange of a portion of a temporary global
Security shall be deemed to be delivery in connection with its original issuance
of such beneficial owner's interest in such permanent global Security. Except as
permitted by Section 306, the Trustee shall not authenticate and deliver any
Bearer Security unless all appurtenant coupons for interest then matured have
been detached and canceled.

     If all the Securities of any series are not to be issued at one time and if
the Board Resolution or supplemental indenture establishing such series shall so
permit, such Company Order may set forth procedures acceptable to the Trustee
for the issuance of such Securities and determining the terms of particular
Securities of such series, such as interest rate or formula, maturity date, date
of issuance and date from which interest shall accrue. 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 TIA Section 315(a) through 315(d)) shall be fully protected in
relying upon,

     (i) an Opinion of Counsel stating that

     (a) the form or forms of such Securities and any coupons have been
     established in conformity with the provisions of this Indenture;

     (b) the terms of such Securities and any coupons have been established in
     conformity with the provisions of this Indenture; and

     (c) such Securities, together with any coupons appertaining thereto, when
     completed by appropriate insertions and executed and delivered by the
     Company to the Trustee for authentication in accordance with this
     Indenture, authenticated and delivered by the Trustee in accordance with
     this Indenture and issued by the Company in the manner and subject to any
     conditions specified in such Opinion of Counsel, will constitute legal,
     valid and binding 

                                       21

 
     obligations of the Company, enforceable in accordance with their terms,
     subject to applicable bankruptcy, insolvency, reorganization and other
     similar laws of general applicability relating to or affecting the
     enforcement of creditors' rights generally and to general equitable
     principles; and

     (ii) an Officers' Certificate stating that all conditions precedent
     provided for in this Indenture relating to the issuance of the Securities
     have been complied with and that, to the best of the knowledge of the
     signers of such certificate, no Event of Default with respect to any of the
     Securities shall have occurred and be continuing.

     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,
obligations 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 and of the preceding
paragraph, if all the Securities of any series are not to be issued at one time,
it shall not be necessary to deliver an Officers' Certificate otherwise required
pursuant to Section 301 or a Company Order, or an Opinion of Counsel or an
Officers' Certificate otherwise required pursuant to the preceding paragraph at
the time of issuance of each Security of such series, but such order, opinion
and certificates, with appropriate modifications to cover such future issuances,
shall be delivered at or before the time of issuance of the first Security of
such series.

     Each Registered Security shall be dated the date of its authentication and
each Bearer Security shall be dated as of the date specified as contemplated by
Section 301.

     No Security or coupon shall be entitled to any benefit under this Indenture
or be valid or obligatory for any purpose unless there appears on such Security
or Security to which such coupon appertains a certificate of authentication
substantially in the form provided for herein duly executed by the Trustee by
manual signature of an authorized signatory, and such certificate upon any
Security shall be conclusive evidence, and the only evidence, that such Security
has been duly authenticated and delivered hereunder and is entitled to the
benefits of this Indenture. 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 together with a written statement (which
need not comply with Section 102 and need not be accompanied by an Opinion of
Counsel) stating that such Security has never been issued and sold by the
Company, 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.

      SECTION 304.  Temporary Securities.  (a) 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 

                                       22

 
otherwise produced, in any authorized denomination, substantially of the tenor
of the definitive Securities in lieu of which they are issued, in registered
form, or, if authorized, in bearer form with one or more coupons or without
coupons, and with such appropriate insertions, omissions, substitutions and
other variations as the officers executing such Securities may determine, as
conclusively evidenced by their execution of such Securities. In the case of
Securities of any series, such temporary Securities may be in global form.

     Except in the case of temporary Securities in global form (which shall be
exchanged in accordance with Section 304(b) or as otherwise provided in or
pursuant to a Board Resolution), 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
(accompanied by any non-matured coupons appertaining thereto), the Company shall
execute and the Trustee shall authenticate and deliver in exchange therefor a
like principal amount of definitive Securities of the same series of authorized
denominations; provided, however, that no definitive Bearer Security shall be
delivered in exchange for a temporary Registered Security; and provided further
that a definitive Bearer Security shall be delivered in exchange for a temporary
Bearer Security only in compliance with the conditions set forth in Section 303.
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.

     (b) Unless otherwise provided in or pursuant to a Board Resolution, this
     Section 304(b) shall govern the exchange of temporary Securities issued in
     global form other than through the facilities of The Depository Trust
     Company.  If any such temporary Security is issued in global form, then
     such temporary global Security shall, unless otherwise provided therein, be
     delivered to the London office of a depositary or common depositary (the
     "Common Depositary"), for the benefit of Euroclear and CEDEL, for credit to
     the respective accounts of the beneficial owners of such Securities (or to
     such other accounts as they may direct).

     Without unnecessary delay but in any event not later than the date
specified in, or determined pursuant to the terms of, any such temporary global
Security (the "Exchange Date"), the Company shall deliver to the Trustee
definitive Securities, in aggregate principal amount equal to the principal
amount of such temporary global Security, executed by the Company.  On or after
the Exchange Date, such temporary global Security shall be surrendered by the
Common Depositary to the Trustee, as the Company's agent for such purpose, to be
exchanged, in whole or from time to time in part, for definitive Securities
without charge, and the Trustee shall authenticate and deliver, in exchange for
each portion of such temporary global Security, an equal aggregate principal
amount of definitive Securities of the same series of authorized denominations
and of like tenor as the portion of such temporary global Security to be
exchanged. The definitive Securities to be delivered in exchange for any such
temporary global Security shall be in bearer form, registered form, permanent
global bearer 

                                       23

 
form or permanent global registered form, or any combination thereof, as
specified as contemplated by Section 301, and, if any combination thereof is so
specified, as requested by the beneficial owner thereof; provided, however,
that, unless otherwise specified in such temporary global Security, upon such
presentation by the Common Depositary, such temporary global Security is
accompanied by a certificate dated the Exchange Date or a subsequent date and
signed by Euroclear as to the portion of such temporary global Security held for
its account then to be exchanged and a certificate dated the Exchange Date or a
subsequent date and signed by CEDEL as to the portion of such temporary global
Security held for its account then to be exchanged, each in the form set forth
in Exhibit A-2 to this Indenture or in such other form as may be established
pursuant to Section 301; and provided further that definitive Bearer Securities
shall be delivered in exchange for a portion of a temporary global Security only
in compliance with the requirements of Section 303.

     Unless otherwise specified in such temporary global Security, the interest
of a beneficial owner of Securities of a series in a temporary global Security
shall be exchanged for definitive Securities of the same series and of like
tenor following the Exchange Date when the account holder instructs Euroclear or
CEDEL, as the case may be, to request such exchange on his behalf and delivers
to Euroclear or CEDEL, as the case may be, a certificate in the form set forth
in Exhibit A-I to this Indenture (or in such other form as may be established
pursuant to Section 301), dated no earlier than 15 days prior to the Exchange
Date, copies of which certificate shall be available from the offices of
Euroclear and CEDEL, the Trustee, any Authenticating Agent appointed for such
series of Securities and each Paying Agent. Unless otherwise specified in such
temporary global Security, any such exchange shall be made free of charge to the
beneficial owners of such temporary global Security, except that a Person
receiving definitive Securities must bear the cost of insurance, postage,
transportation and the like unless such Person takes delivery of such definitive
Securities in person at the offices of Euroclear or CEDEL. Definitive Securities
in bearer form to be delivered in exchange for any portion of a temporary global
Security shall be delivered only outside the United States.

     Until exchanged in full as hereinabove provided, the temporary Securities
of any series shall in all respects be entitled to the same benefits under this
Indenture as definitive Securities of the same series and of like tenor
authenticated and delivered hereunder, except that, unless otherwise specified
as contemplated by Section 301, interest payable on a temporary global Security
on an Interest Payment Date for Securities of such series occurring prior to the
applicable Exchange Date shall be payable to Euroclear and CEDEL on such
Interest Payment Date upon delivery by Euroclear and CEDEL to the Trustee of a
certificate or certificates in the form set forth in Exhibit A-2 to this
Indenture (or in such other forms as may be established pursuant to Section
301), for credit without further interest on or after such Interest Payment Date
to the respective accounts of Persons who are the beneficial owners of such
temporary global Security on such Interest Payment Date and who have each
delivered to Euroclear or CEDEL, as the case may be, a certificate dated no
earlier than 15 days prior to the Interest Payment Date occurring prior to such
Exchange Date in the form set forth as Exhibit A-1 to this Indenture (or in such
other forms as may be established pursuant to Section 301). Notwithstanding
anything to the contrary herein contained, the certifications made pursuant to
this paragraph shall satisfy the certification requirements of the preceding two
paragraphs 

                                       24

 
of this Section 304(b) and of the third paragraph of Section 303 of this
Indenture and the interests of the Persons who are the beneficial owners of the
temporary global Security with respect to which such certification was made will
be exchanged for definitive Securities of the same series and of like tenor on
the Exchange Date or the date of certification if such date occurs after the
Exchange Date, without further act or deed by such beneficial owners. Except as
otherwise provided in this paragraph, no payments of principal or interest owing
with respect to a beneficial interest in a temporary global Security will be
made unless and until such interest in such temporary global Security shall have
been exchanged for an interest in a definitive Security. Any interest so
received by Euroclear and CEDEL and not paid as herein provided shall be
returned to the Trustee prior to the expiration of two years after such Interest
Payment Date in order to be repaid to the Company.

      SECTION 305.  Registration, Registration of Transfer and Exchange.  The
                    ---------------------------------------------------      
Company shall cause to be kept at the Corporate Trust Office of the Trustee or
in any office or agency of the Company in a Place of Payment a register for each
series of Securities (the registers maintained in such office or in any such
office or agency of the Company in a Place of Payment being herein sometimes
referred to collectively as the "Security Register") in which, subject to such
reasonable regulations as it may prescribe, the Company shall provide for the
registration of Registered Securities and of transfers of Registered Securities.
The Security Register shall be in written form or any other form capable of
being converted into written form within a reasonable time. The Trustee, at its
Corporate Trust Office, is hereby initially appointed "Security Registrar" for
the purpose of registering Registered Securities and transfers of Registered
Securities on such Security Register as herein provided. In the event that the
Trustee shall cease to be Security Registrar, it shall have the right to examine
the Security Register at all reasonable times.

     Subject to the provisions of this Section 305, upon surrender for
registration of transfer of any Registered Security of any series at any office
or agency of the Company 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 Registered Securities
of the same series, of any authorized denominations and of a like aggregate
principal amount, bearing a number not contemporaneously outstanding, and
containing identical terms and provisions.

     Subject to the provisions of this Section 305, at the option of the Holder,
Registered Securities of any series may be exchanged for other Registered
Securities of the same series, of any authorized denomination or denominations
and of a like aggregate principal amount, containing identical terms and
provisions, upon surrender of the Registered Securities to be exchanged at any
such office or agency. Whenever any such Registered Securities are so
surrendered for exchange, the Company shall execute, and the Trustee shall
authenticate and deliver, the Registered Securities which the Holder making the
exchange is entitled to receive. Unless otherwise specified with respect to any
series of Securities as contemplated by Section 301, Bearer Securities may not
be issued in exchange for Registered Securities.

     If (but only if) permitted by the applicable Board Resolution and (subject
to Section 303) set forth in the applicable Officers' Certificate, or in any
indenture supplemental hereto, delivered as 

                                       25

 
contemplated by Section 301, at the option of the Holder, Bearer Securities of
any series may be exchanged for Registered Securities of the same series of any
authorized denominations and of a like aggregate principal amount and tenor,
upon surrender of the Bearer Securities to be exchanged at any such office or
agency, with all unmatured coupons and all matured coupons in default thereto
appertaining. If the Holder of a Bearer Security is unable to produce any such
unmatured coupon or coupons or matured coupon or coupons in default, any such
permitted exchange may be effected if the Bearer Securities are accompanied by
payment in funds acceptable to the Company in an amount equal to the face amount
of such missing coupon or coupons, or the surrender of such missing coupon or
coupons may be waived by the Company and the Trustee if there is furnished to
them such security or indemnity as they may require to save each of them and any
Paying Agent harmless. If thereafter the Holder of such Security shall surrender
to any Paying Agent any such missing coupon in respect of which such a payment
shall have been made, such Holder shall be entitled to receive the amount of
such payment; provided, however, that, except as otherwise provided in Section
1002, interest represented by coupons shall be payable only upon presentation
and surrender of those coupons at an office or agency located outside the United
States. Notwithstanding the foregoing, in case a Bearer Security of any series
is surrendered at any such office or agency in a permitted exchange for a
Registered Security of the same series and like tenor after the close of
business at such office or agency on (i) any Regular Record Date and before the
opening of business at such office or agency on the relevant Interest Payment
Date, or (ii) any Special Record Date and before the opening of business at such
office or agency on the related proposed date for payment of Defaulted Interest,
such Bearer Security shall be surrendered without the coupon relating to such
Interest Payment Date or proposed date for payment, as the case may be, and
interest or Defaulted Interest, as the case may be, will not be payable on such
Interest Payment Date or proposed date for payment, as the case may be, in
respect of the Registered Security issued in exchange for such Bearer Security,
but will be payable only to the Holder of such coupon then due in accordance
with the provisions of this Indenture. 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.

     Notwithstanding the foregoing, except as otherwise specified as
contemplated by Section 301, any permanent global Security shall be exchangeable
only as provided in this paragraph. If the depositary for any permanent global
Security is The Depository Trust Company ("DTC"), then, unless the terms of such
global Security expressly permit such global Security to be exchanged in whole
or in part for definitive Securities, a global Security may be transferred, in
whole but not in part, only to a nominee of DTC, or by a nominee of DTC to DTC,
or to a successor to DTC for such global Security selected or approved by the
Company or to a nominee of such successor to DTC. If at any time DTC notifies
the Company that it is unwilling or unable to continue as depositary for the
applicable global Security or Securities or if at any time DTC ceases to be a
clearing agency registered under the Securities Exchange Act of 1934 if so
required by applicable law or regulation, the Company shall appoint a successor
depositary with respect to such global Security or Securities. If (x) a
successor depositary for such global Security or Securities is not appointed by
the Company within 90 days after the Company receives such notice or becomes
aware of such unwillingness, inability or ineligibility, (y) an Event of Default
has occurred and is continuing and the beneficial 

                                       26

owners representing a majority in principal amount of the applicable series of
Securities represented by such global Security or Securities advise DTC to cease
acting as depositary for such global Security or Securities or (z) the Company,
in its sole discretion, determines at any time that all Outstanding Securities
(but not less than all) of any series issued or issuable in the form of one or
more global Securities shall no longer be represented by such global Security or
Securities, then the Company shall execute, and the Trustee shall authenticate
and deliver definitive Securities of like series, rank, tenor and terms in
definitive form in an aggregate principal amount equal to the principal amount
of such global Security or Securities. If any beneficial owner of an interest in
a permanent global Security is otherwise entitled to exchange such interest for
Securities of such series and of like tenor and principal amount of another
authorized form and denomination, as specified as contemplated by Section 301
and provided that any applicable notice provided in the permanent global
Security shall have been given, then without unnecessary delay but in any event
not later than the earliest date on which such interest may be so exchanged, the
Company shall execute, and the Trustee shall authenticate and deliver definitive
Securities in aggregate principal amount equal to the principal amount of such
beneficial owner's interest in such permanent global Security. On or after the
earliest date on which such interests may be so exchanged, such permanent global
Security shall be surrendered for exchange by DTC or such other depositary as
shall be specified in the Company Order with respect thereto to the Trustee, as
the Company's agent for such purpose; provided, however, that no such exchanges
may occur during a period beginning at the opening of business 15 days before
any selection of Securities to be redeemed and ending on the relevant Redemption
Date if the Security for which exchange is requested may be among those selected
for redemption; and provided further that no Bearer Security delivered in
exchange for a portion of a permanent global Security shall be mailed or
otherwise delivered to any location in the United States. If a Registered
Security is issued in exchange for any portion of a permanent global Security
after the close of business at the office or agency where such exchange occurs
on (i) any Regular Record Date and before the opening of business at such office
or agency on the relevant Interest Payment Date, or (ii) any Special Record Date
and the opening of business at such office or agency on the related proposed
date for payment of Defaulted Interest, interest or Defaulted Interest, as the
case may be, will not be payable on such Interest Payment Date or proposed date
for payment, as the case may be, in respect of such Registered Security, but
will be payable on such Interest Payment Date or proposed date for payment, as
the case may be, only to the Person to whom interest in respect of such portion
of such permanent global Security is payable in accordance with the provisions
of this Indenture.

     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 Registered Security presented or surrendered for registration of
transfer or for exchange or redemption shall (if so required by the Company or
the Security Registrar) be duly endorsed, or be accompanied by a written
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.

                                       27

 
     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, 1107 or 1305 not involving any transfer.

     The Company or the Trustee, as applicable, shall not be required (i) to
issue, register the transfer of or exchange any Security if such Security may be
among those selected for redemption during a period beginning at the opening of
business 15 days before selection of the Securities to be redeemed under Section
1103 and ending at the close of business on (A) if such Securities are issuable
only as Registered Securities, the day of the mailing of the relevant notice of
redemption and (B) if such Securities are issuable as Bearer Securities, the day
of the first publication of the relevant notice of redemption or, if such
Securities are also issuable as Registered Securities and there is no
publication, the mailing of the relevant notice of redemption, or (ii) to
register the transfer of or exchange any Registered Security so selected for
redemption in whole or in part, except, in the case of any Registered Security
to be redeemed in part, the portion thereof not to be redeemed, or (iii) to
exchange any Bearer Security so selected for redemption except that such a
Bearer Security may be exchanged for a Registered Security of that series and
like tenor, provided that such Registered Security shall be simultaneously
surrendered for redemption, or (iv) to issue, register the transfer of or
exchange any Security which has been surrendered for repayment at the option of
the Holder, except the portion, if any, of such Security not to be so repaid.

      SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.  If any
                    ------------------------------------------------         
mutilated Security or a Security with a mutilated coupon appertaining to it is
surrendered to the Trustee or the Company, together with, in proper cases, such
security or indemnity as may be required by the Company or the Trustee to save
each of them or any agent of either of them harmless, the Company shall execute
and the Trustee shall authenticate and deliver in exchange therefor a new
Security of the same series and principal amount, containing identical terms and
provisions and bearing a number not contemporaneously outstanding, with coupons
corresponding to the coupons, if any, appertaining to the surrendered Security.

     If there shall be delivered to the Company and to the Trustee (i) evidence
to their satisfaction of the destruction, loss or theft of any Security or
coupon, 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 or coupon 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
destroyed, lost or stolen Security or in exchange for the Security to which a
destroyed, lost or stolen coupon appertains (with all appurtenant coupons not
destroyed, lost or stolen, a new Security of the same series and principal
amount, containing identical terms and provisions and bearing a number not
contemporaneously outstanding, with coupons corresponding to the coupons, if
any, appertaining to such destroyed, lost or stolen Security or to the Security
to which such destroyed, lost or stolen coupon appertains.

     Notwithstanding the provisions of the previous two paragraphs in case any
such mutilated, 

                                       28

 
destroyed, lost or stolen Security or coupon has become or is about to become
due and payable, the Company in its discretion may, instead of issuing a new
Security, with coupons corresponding to the coupons, if any, appertaining to
such destroyed, lost or stolen Security or to the Security to which such
destroyed, lost or stolen coupon appertains, pay such Security or coupon;
provided, however, that payment of principal of (and premium, if any), any
interest on and any Additional Amounts with respect to, Bearer Securities shall,
except as otherwise provided in Section 1002, be payable only at an office or
agency located outside the United States and, unless otherwise specified as
contemplated by Section 301, any interest on Bearer Securities shall be payable
only upon presentation and surrender of the coupons appertaining thereto.

     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 with its coupons, if any, issued pursuant
to this Section in lieu of any destroyed, lost or stolen Security, or in
exchange for a Security to which a destroyed, lost or stolen coupon appertains,
shall constitute an original additional contractual obligation of the Company,
whether or not the destroyed, lost or stolen Security and its coupons, if any,
or the destroyed, lost or stolen coupon 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 and their
coupons, if any, 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 or coupons.

      SECTION 307.  Payment of Interest; Interest Rights Preserved.  Except as
                    ----------------------------------------------            
otherwise specified with respect to a series of Securities in accordance with
the provisions of Section 301, interest on any Registered Security that 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 at the office or agency of the Company maintained
for such purpose pursuant to Section 1002; provided, however, that each
installment of interest on any Registered Security may at the Company's option
be paid by (i) mailing a check for such interest, payable to or upon the written
order of the Person entitled thereto pursuant to Section 308, to the address of
such Person as it appears on the Security Register or (ii) transfer to an
account maintained by the payee located inside the United States.

     Unless otherwise provided as contemplated by Section 301 with respect to
the Securities of any series, payment of interest may be made, in the case of a
Bearer Security, by transfer to an account maintained by the payee with a bank
located outside the United States.

                                       29

 
     Unless otherwise provided as contemplated by Section 301, every permanent
global Security will provide that interest, if any, payable on any Interest
Payment Date will be paid to DTC, Euroclear and/or CEDEL, as the case may be,
with respect to that portion of such permanent global Security held for its
account by Cede & Co. or the Common Depositary, as the case may be, for the
purpose of permitting such party to credit the interest received by it in
respect of such permanent global Security to the accounts of the beneficial
owners thereof.

     In case a Bearer Security of any series is surrendered in exchange for a
Registered Security of such series after the close of business (at an office or
agency in a Place of Payment for such series) on any Regular Record Date and
before the opening of business (at such office or agency) on the next succeeding
Interest Payment Date, such Bearer Security shall be surrendered without the
coupon relating to such Interest Payment Date and interest will not be payable
on such Interest Payment Date in respect of the Registered Security issued in
exchange for such Bearer Security, but will be payable only to the Holder of
such coupon when due in accordance with the provisions of this Indenture.

     Except as otherwise specified with respect to a series of Securities in
accordance with the provisions of Section 301, any interest on any Registered
Security of any series that 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 registered Holder thereof 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 Registered 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 Registered Security of such series and the date of the
     proposed payment (which shall not be less than 20 days after such notice is
     received by the Trustee) and at the same time the Company shall deposit
     with the Trustee an amount of money in the currency or currencies, currency
     unit or units or composite currency or currencies in which the Securities
     of such series are payable (except as otherwise specified pursuant to
     Section 301 for the Securities of such series) 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 on or 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 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 

                                       30

 
     therefor to be mailed, first-class postage prepaid, to each Holder of
     Registered Securities of such series at his address as it appears in the
     Security Register not less than 10 days prior to such Special Record Date.
     The Trustee may, in its discretion, in the name and at the expense of the
     Company, cause a similar notice to be published at least once in an
     Authorized Newspaper in each place of payment, but such publications shall
     not be a condition precedent to the establishment of such Special Record
     Date. Notice of the proposed payment of such Defaulted Interest and the
     Special Record Date therefor having been mailed as aforesaid, such
     Defaulted Interest shall be paid to the Persons in whose names the
     Registered 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).
     In case a Bearer Security of any series is surrendered at the office or
     agency in a Place of Payment for such series in exchange for a Registered
     Security of such series after the close of business at such office or
     agency on any Special Record Date and before the opening of business at
     such office or agency on the related proposed date for payment of Defaulted
     Interest, such Bearer Security shall be surrendered without the coupon
     relating to such proposed date of payment and Defaulted Interest will not
     be payable on such proposed date of payment in respect of the Registered
     Security issued in exchange for such Bearer Security, but will be payable
     only to the Holder of such coupon when due in accordance with the
     provisions of this Indenture.

          (2) The Company may make payment of any Defaulted Interest on the
     Registered 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 and Section 305, 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
                    ---------------------                                
Registered 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
Registered 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
Sections 305 and 307) interest on, such Registered Security and for all other
purposes whatsoever, whether or not such Registered 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.

     Title to any Bearer Security and any coupons appertaining thereto shall
pass by delivery.  The Company, the Trustee and any agent of the Company or the
Trustee may treat the Holder of any Bearer Security and the Holder of any coupon
as the absolute owner of such Security or coupon for 

                                       31

 
the purpose of receiving payment thereof or on account thereof and for all other
purposes whatsoever, whether or not such Security or coupon 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.

     None of the Company, the Trustee, any Paying Agent or the Security
Registrar will have any responsibility or liability for any aspect of the
records relating to or payments made on account of beneficial ownership
interests of a Security in global form or for maintaining, supervising or
reviewing any records relating to such beneficial ownership interests.

     Notwithstanding the foregoing, with respect to any global Security, nothing
herein shall prevent the Company, the Trustee, or any agent of the Company or
the Trustee, from giving effect to any written certification, proxy or other
authorization furnished by any depositary, as a Holder, with respect to such
global Security or impair, as between such depositary and owners of beneficial
interests in such global Security, the operation of customary practices
governing the exercise of the rights of such depositary (or its nominee) as
Holder of such global Security.

      SECTION 309.  Cancellation.  All Securities and coupons surrendered for
                    ------------                                             
payment, redemption, repayment at the option of the Holder, 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 any such Securities and coupons and Securities and coupons surrendered
directly to the Trustee for any such purpose 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.  If
the Company shall so acquire any of the Securities however, such acquisition
shall not operate as a redemption or satisfaction of the indebtedness
represented by such Securities unless and until the same are surrendered to the
Trustee for cancellation.  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.  Canceled Securities and coupons held by
the Trustee shall be destroyed by the Trustee and the Trustee shall deliver a
certificate of such destruction to the Company, unless by a Company Order the
Company directs their return to it.

      SECTION 310.  Computation of Interest.  Except as otherwise specified as
                    -----------------------                                   
contemplated by Section 301 with respect to Securities of any series, interest
on the Securities of each series shall be computed on the basis of a 360-day
year consisting of twelve 30-day months.

                                 ARTICLE FOUR

                          SATISFACTION AND DISCHARGE

      SECTION 401.  Satisfaction and Discharge of Indenture. This Indenture
                    ---------------------------------------                
shall upon Company 

                                       32

 
Request cease to be of further effect with respect to any series of Securities
specified in such Company Request (except as to any surviving rights of
registration of transfer or exchange of Securities of such series herein
expressly provided for and any right to receive Additional Amounts, and the
Trustee, upon receipt of a Company Order, and at the expense of the Company,
shall execute proper instruments acknowledging satisfaction and discharge of
this Indenture as to such series when

     (1)  either

     (A) all Securities of such series theretofore authenticated and delivered
     and all coupons, if any, appertaining thereto (other than (i) coupons
     appertaining to Bearer Securities surrendered for exchange for Registered
     Securities and maturing after such exchange, whose surrender is not
     required or has been waived as provided in Section 305, (ii) Securities and
     coupons of such series which have been destroyed, lost or stolen and which
     have been replaced or paid as provided in Section 306, (iii) coupons
     appertaining to Securities called for redemption and maturing after the
     relevant Redemption Date, whose surrender has been waived as provided in
     Section 1106, and (iv) Securities and coupons of such series 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 for cancellation; or

     (B) all Securities of such series and, in the case of (i) or (ii) below,
     any coupons appertaining thereto not theretofore delivered to the Trustee
     for cancellation

          (i)    have become due and payable, or

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

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

and the Company, in the case of (i), (ii) or (iii) above, has irrevocably
deposited or caused to be deposited with the Trustee as trust funds in trust for
the purpose (A) an amount of money in the currency or currencies, currency unit
or units or composite currency or currencies in which the Securities of such
series are payable, (B) Government Obligations that through the scheduled
payment of principal and interest in respect thereof in accordance with their
terms will provide, not later than on day before the due date of any payment,
money in an amount, or (C) a combination thereof, sufficient to pay and
discharge the entire indebtedness on such Securities and such coupons not
theretofore delivered to the Trustee for cancellation, for principal (and
premium, if any) and interest, and any Additional Amounts with respect thereto,
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;

                                       33

 
     (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
     as to such series have been complied with.

     Notwithstanding the satisfaction and discharge of this Indenture, the
obligations of the Company to the Trustee and any predecessor Trustee under
Section 606, the obligations of the Company to any Authenticating Agent under
Section 611 and, if money shall have been deposited with and held by 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 Funds.  Subject to the 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, the coupons 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 premium, if any), and any interest and
Additional Amounts for whose payment such money has been deposited with or
received by the Trustee, but such money need not be segregated from other funds
except to the extent required by law.

                                 ARTICLE FIVE

                                   REMEDIES

      SECTION 501.  Events of Default.  "Event of Default", wherever used herein
                    -----------------                                           
with respect to any particular series of Securities, means any one of the
following events (whatever the reason for such Event of Default and whether or
not 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 or
regulation of any administrative or governmental body):

     (1) default in the payment of any interest upon or any Additional Amounts
     payable in respect of any Security of that series or of any coupon
     appertaining thereto, when such interest, Additional Amounts or coupon
     becomes due and payable, and continuance of such default for a period of 30
     days; or

     (2) default in the payment of the principal of (or premium, if any, on) any
     Security of that series when it becomes due and payable at its Maturity; or

     (3) default in the deposit of any sinking fund payment, when and as due by
     the terms of any Security of that series; or

                                       34

 
     (4) default in the performance, or breach, of any covenant or warranty of
     the Company in this Indenture with respect to any Security of that series
     (other than a covenant or warranty a default in whose performance or whose
     breach is elsewhere in this Section specifically dealt with), and
     continuance of such default or breach for a period of 90 days after there
     has been given, by registered or certified mail, to the Company by the
     trustee or to the Company and the Trustee by the Holders of at least 25% in
     principal amount of the Outstanding Securities of that series a written
     notice specifying such default or breach and requiring it to be remedied
     and stating that such notice is a "Notice of Default" hereunder; or

     (5) the Company or any Significant Subsidiary pursuant to or within the
     meaning of any Bankruptcy Law:

     (A)  commences a voluntary case,

     (B) consents to the entry of an order for relief against it in an
     involuntary case,

     (C) consents to the appointment of a Custodian of it or for all or
     substantially all of its property, or

     (D) makes a general assignment for the benefit of its creditors; or

     (6) a court of competent jurisdiction enters an order or decree under any
     Bankruptcy Law that:

     (A) is for relief against the Company or any Significant Subsidiary in an
     involuntary case,

     (B) appoints a Custodian of the Company or any Significant Subsidiary or
     for all or substantially all of either of its property, or

     (C) orders the liquidation of the Company or any Significant Subsidiary,
     and the order or decree remains unstayed and in effect for 90 days; or

     (7) any other Event of Default provided with respect to Securities of that
     series.

     As used in this Section 501, the term "Bankruptcy Law" means title 11, U.S.
Code or any similar Federal or State law for the relief of debtors and the term
Custodian means any receiver, trustee, assignee, liquidator or other similar
official under any Bankruptcy Law.

      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 and 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 (or, if any Securities are
Original Issue Discount Securities or Indexed Securities, such portion of the
principal as may be specified in 

                                       35

 
the terms thereof) of all 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 the Holders), and upon any such declaration such principal or specified
portion thereof 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 in the currency or currency unit or composite currency in which the
     Securities of such series are payable (except as otherwise specified
     pursuant to Section 301 for the Securities of such series):

     (A) all overdue installments of interest on and any Additional Amounts
     payable in respect of all Outstanding Securities of that series and any
     related coupons,

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

     (C)  to the extent that payment of such interest is lawful, interest upon
     overdue installments of interest and any Additional Amounts at the rate or
     rates borne by or provided for 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; and

     (2) all Events of Default with respect to Securities of that series, other
     than the nonpayment of the principal of (or premium, if any) or interest on
     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 installment of interest or
     Additional Amounts, if any, on any Security of any series and any related
     coupon when such interest or Additional Amount becomes due and payable and
     such default continues for a period of 30 days, or

                                       36

 
     (2) default is made in the payment of the principal of (or premium, if any,
     on) any Security of any series at its Maturity,

then the Company will, upon demand of the Trustee, pay to the Trustee, for the
benefit of the Holders of such Securities of such series and coupons, the whole
amount then due and payable on such Securities and coupons for principal (and
premium, if any) and interest and Additional Amounts, with interest upon any
overdue principal (and premium, if any) and, to the extent that payment of such
interest shall be legally enforceable, upon any overdue installments of interest
or Additional Amounts, if any, at the rate or rates borne by or provided for 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 the Company fails to pay such amounts forthwith upon such demand, the
Trustee, in its own name and as trustee of an express trust, may institute a
judicial proceeding for the collection of the sums so due and unpaid, and may
prosecute such proceeding to judgment or final decree, and may enforce the same
against the Company or any other obligor upon such Securities of such series and
collect the moneys adjudged or decreed to be payable in the manner provided by
law out of the property of the Company or any other obligor upon such Securities
of such series, wherever situated.

     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 and any
related coupons by such appropriate judicial proceedings as the Trustee shall
deem most effectual to protect and enforce any such rights, whether for the
specific enforcement of any covenant or agreement in this Indenture or in aid of
the exercise of any power granted herein, or to enforce any other proper remedy.

      SECTION 504.  Trustee May File Proofs of Claim.  In case of the pendency
                    --------------------------------                          
of any receivership, insolvency, liquidation, bankruptcy, reorganization,
arrangement, adjustment, composition or other judicial proceeding relative to
the Company or any other obligor upon the Securities or the property of the
Company or of such other obligor or their creditors, the Trustee (irrespective
of whether the principal of the Securities of any series shall then be due and
payable as therein expressed or by declaration or otherwise and irrespective of
whether the Trustee shall have made any demand on the Company for the payment of
overdue principal, premium, if any, or interest) shall be entitled and
empowered, by intervention in such proceeding or otherwise:

     (i)  to file and prove a claim for the whole amount, or such lesser amount
     as may be provided for in the Securities of such series, of principal (and
     premium, if any) and interest and Additional Amounts, if any, owing and
     unpaid in respect of the Securities and to file such other papers or
     documents as may be necessary or advisable in order to have the claims of
     the Trustee (including any claim for the reasonable compensation, expenses,
     disbursements and advances of the Trustee, its agents and counsel) and of
     the Holders allowed in such judicial proceeding, and

                                       37

 
     (ii) 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 of Securities of such series and coupons 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 to
it for the reasonable compensation, expenses, disbursements and advances of the
Trustee and any predecessor Trustee, their agents and counsel, and any other
amounts due the Trustee or any predecessor Trustee under Section 606.

     Nothing herein contained shall be deemed to authorize the Trustee to
authorize or consent to or accept or adopt on behalf of any Holder of a Security
or coupon any plan of reorganization, arrangement, adjustment or composition
affecting the Securities or coupons or the rights of any Holder thereof, or to
authorize the Trustee to vote in respect of the claim of any Holder of a
Security or coupon in any such proceeding.

      SECTION 505.  Trustee May Enforce Claims Without Possession of Securities
                    -----------------------------------------------------------
or Coupons. All rights of action and claims under this Indenture or any of the
- ----------                                                                    
Securities or coupons may be prosecuted and enforced by the Trustee without the
possession of any of the Securities or coupons 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 and
coupons 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 and any
Additional Amounts, upon presentation of the Securities or coupons, or both, as
the case may be, and the notation thereon of the payment if only partially paid
and upon surrender thereof if fully paid:

     FIRST:    To the payment of all amounts due the Trustee and any predecessor
Trustee under Section 606;

     SECOND:   To the payment of the amounts then due and unpaid upon the
Securities and coupons for principal (and premium, if any) and interest and any
Additional Amounts payable, 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 aggregate amounts due and payable on such Securities and
coupons for principal (and premium, if any), interest and Additional Amounts,
respectively; and

                                       38

 
     THIRD:    To the payment of the remainder, if any, to the Company.

     SECTION 507.  Limitation on Suits.  No Holder of any Security of any
                    -------------------                                   
series or any related coupon 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 indemnity
     reasonably satisfactory to the Trustee 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 such
Holders.

      SECTION 508.  Unconditional Right of Holders to Receive Principal,
                    ----------------------------------------------------
Premium, if any, Interest and Additional Amounts. Notwithstanding any other
- ------------------------------------------------                           
provision in this Indenture, the Holder of any Security or coupon shall have the
right which is absolute and unconditional to receive payment of the principal of
(and premium, if any) and (subject to Sections 305 and 307) interest on, and any
Additional Amounts in respect of, such Security or payment of such coupon on the
respective due dates expressed in such Security or coupon (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 of a Security or coupon 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, the Company, the Trustee 

                                       39

 
and the Holders of Securities and coupons shall, subject to any determination in
such proceeding, be restored severally and respectively to their former
positions hereunder and thereafter all rights and remedies of the Trustee and
the Holders shall continue as though no such proceeding had been instituted.

      SECTION 510.  Rights and Remedies Cumulative.  Except as otherwise
                    ------------------------------                      
provided with respect to the replacement or payment of mutilated, destroyed,
lost or stolen Securities or coupons in the last paragraph of Section 306, no
right or remedy herein conferred upon or reserved to the Trustee or to the
Holders of Securities or coupons 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 Security or coupon 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 of Securities or coupons, as the
case may be.

      SECTION 512.  Control by Holders of Securities.  The Holders of not less
                    --------------------------------                          
than 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,

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

     (3) the Trustee need not take any action which might involve it in personal
     liability or be unduly prejudicial to the Holders of Securities of such
     series not joining therein.

      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 and any related
coupons 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
     or Additional Amounts payable in respect of any Security of such series or
     any related coupons, or

                                       40

 
     (2) in respect of a covenant or provision hereof which under Article Nine
     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 Event of Default or impair any right consequent thereon.

      SECTION 514.  Waiver of Usury, 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 usury, stay or extension law wherever enacted, now
or at any time hereafter in force, which may affect the covenants or the
performance of this Indenture; and the Company (to the extent that it may
lawfully do so) hereby expressly waives all benefit or advantage of any such
law, and covenants that it will not hinder, delay or impede the execution of any
power herein granted to the Trustee, but will suffer and permit the execution of
every such power as though no such law had been enacted.

      SECTION 515.  Undertaking for Costs.  All parties to this Indenture agree,
                    ---------------------                                       
and each Holder of any Security by his acceptance thereof shall be deemed to
have agreed, that any court may in its discretion require, 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 or omitted by it as Trustee, the filing by any
party litigant in such suit of any undertaking to pay the costs of such suit,
and that such court may in its discretion assess reasonable costs, including
reasonable attorneys' fees, against any party litigant in such suit having due
regard to the merits and good faith of the claims or defenses made by such party
litigant; but the provisions of this Section shall not apply to any suit
instituted by the Trustee, to any suit instituted by any Holder, or group of
Holders, holding in the aggregate more than 10% in principal amount of the
Outstanding Securities, or to any suit instituted by any Holder for the
enforcement of the payment of the principal of (or premium, if any) or interest
on any Security on or after the respective Stated Maturities expressed in such
Security (or, in the case of redemption, on or after the Redemption Date).

                                  ARTICLE SIX

                                  THE TRUSTEE

      SECTION 601.  Notice of Defaults.  Within 90 days after the occurrence of
                    ------------------                                         
any default hereunder with respect to the Securities of any series, the Trustee
shall transmit in the manner and to the extent provided in TIA Section 313(c),
notice of such default hereunder known to the Trustee, unless such default shall
have been cured or waived; provided, however, that, except in the case of a
default in the payment of the principal of (or premium, if any) or interest on
or any Additional Amounts with respect to any Security of such series, or in the
payment of any sinking fund installment with respect to the Securities of such
series, the Trustee shall be protected in withholding such notice if and so long
as Responsible Officers of the Trustee in good faith determine that the

                                       41

 
withholding of such notice is in the interests of the Holders of the Securities
and coupons of such series; and provided further that in the case of any default
or breach of the character specified in Section 501(4) with respect to the
Securities and coupons of such series, no such notice to Holders shall be given
until at least 90 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 the Securities
of such series.

      SECTION 602.  Certain Rights of Trustee.  Subject to the provisions of TIA
                    -------------------------                                   
Section 315(a) through 315(d):

     (1) 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, coupon or other paper or document believed by it to be
     genuine and to have been signed or presented by the proper party or
     parties;

     (2) any request or direction of the Company mentioned herein shall be
     sufficiently evidenced by a Company Request or Company Order (other than
     delivery of any Security, together with any coupons appertaining thereto,
     to the Trustee for authentication and delivery pursuant to Section 303
     which shall be sufficiently evidenced as provided therein) and any
     resolution of the Board of Directors may be sufficiently evidenced by a
     Board Resolution;

     (3) 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;

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

     (5) 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 of Securities of any series or any related coupons pursuant
     to this Indenture, unless such Holders shall have offered to the Trustee
     security or indemnity reasonably satisfactory to the Trustee against the
     costs, expenses and liabilities which might be incurred by it in compliance
     with such request or direction;

     (6) 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, coupon 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 make
     reasonable examination of the books, records and 

                                       42

 
     premises of the Company, personally or by agent or attorney following
     reasonable notice to the Company;

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

     (8) the Trustee shall not be liable for any action taken, suffered or
     omitted by it in good faith and reasonably believed by it to be authorized
     or within the discretion or rights or powers conferred upon it by this
     Indenture.

The Trustee shall not be required 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.

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

      SECTION 603.  Not Responsible for Recitals or Issuance of Securities.  The
                    ------------------------------------------------------      
recitals contained herein and in the Securities, except the Trustee's
certificate of authentication, and in any coupons shall be taken as the
statements of the Company, and neither the Trustee nor any Authenticating Agent
assumes any responsibility for their correctness.  The Trustee makes no
representations as to the validity or sufficiency of this Indenture or of the
Securities or coupons, except that the Trustee represents that it is duly
authorized to execute and deliver this Indenture, authenticate the Securities
and perform its obligations hereunder.  Neither the Trustee nor any
Authenticating Agent shall be accountable for the use or application by the
Company of Securities or the proceeds thereof.

      SECTION 604.  May Hold Securities.  The Trustee, any Paying Agent,
                    -------------------                                 
Security Registrar, Authenticating Agent or any other agent of the Company, in
its individual or any other capacity, may become the owner or pledgee of
Securities and coupons and, subject to TIA Sections 310(b) and 311, may
otherwise deal with the Company with the same rights it would have if it were
not Trustee, Paying Agent, Security Registrar, Authenticating Agent or such
other agent.

      SECTION 605.  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.

                                       43

 
      SECTION 606.  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 each of the
     Trustee and any predecessor 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 each of the Trustee and any predecessor Trustee for, and
     to hold it harmless against, any loss, liability or expense incurred
     without negligence or bad faith on its own 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.

     When the Trustee incurs expenses or renders services in connection with an
Event of Default specified in Section 501(6) or Section 501(7), the expenses
(including the reasonable charges and expenses of its counsel) and the
compensation for the services are intended to constitute expenses of
administration under any applicable Federal or state bankruptcy, insolvency or
other similar law.

     As security for the performance of the obligations of the Company under
this Section, the Trustee shall have a lien prior to the Securities upon all
property and funds held or collected by the Trustee as such, except funds held
in trust for the payment of principal of (or premium, if any) or interest on
particular Securities or any coupons.

     The provisions of this Section shall survive the termination of this
Indenture.

      SECTION 607.  Corporate Trustee Required; Eligibility; Conflicting
                    ----------------------------------------------------
Interests. There shall at all times be a Trustee hereunder which shall be
- ---------                                                                
eligible to act as Trustee under TIA Section 310(a)(1) and shall have a combined
capital and surplus of at least $50,000,000. If such corporation publishes
reports of condition at least annually, pursuant to law or the requirements of
Federal, State, Territorial or District of Columbia supervising or examining
authority, then for the purposes of this Section, the combined capital and
surplus of such corporation 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 

                                       44

 
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. If the Trustee has or shall acquire a
conflicting interest within the meaning of the TIA, 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 TIA and this Indenture.

      SECTION 608.  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 609.

     (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 an
     instrument of acceptance by a successor Trustee shall not have been
     delivered to the Trustee within 30 days after the giving of such notice of
     resignation, the resigning Trustee may petition any court of competent
     Jurisdiction for the appointment of a successor Trustee.

     (c) The Trustee may be removed at any time 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:

     (1) the Trustee shall fail to comply with the provisions of TIA Section
     310(b) after written request therefor by the Company or by any Holder of a
     Security 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 607 and shall fail
     to resign after written request therefor by the Company or by any Holder of
     a Security who has been a bona fide Holder of a Security for at least six
     months, 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 or pursuant to a Board Resolution may
remove the Trustee and appoint a successor Trustee with respect to all
Securities, or (ii) subject to TIA Section 315(e), any Holder of a Security 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.

                                       45

 
     (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 or
     pursuant to 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). 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 delivered to the Company and the retiring Trustee, the
     successor Trustee so appointed shall, forthwith upon its acceptance of such
     appointment, become the successor Trustee 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 of
     Securities and accepted appointment in the manner hereinafter provided, any
     Holder of a Security 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 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 in the manner provided for notices to the Holders of Securities 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.

      SECTION 609.  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 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 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, pursuant to Article Nine hereof, 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 

                                       46

 
     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 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.

      SECTION 610.  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 of 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 or coupons 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 or coupons so authenticated with
the same effect as if such 

                                       47

 
successor Trustee had itself authenticated such Securities or coupons. In case
any Securities or coupons shall not have been authenticated by such predecessor
Trustee, any such successor Trustee may authenticate and deliver such Securities
or coupons, in either its own name or that of its predecessor Trustee, with the
full force and effect which this Indenture provides for the certificate of
authentication of the Trustee.

      SECTION 611.  Appointment of Authenticating Agent.  At any time when any
                    -----------------------------------                       
of the Securities remain Outstanding, 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 exchange, registration of transfer or partial redemption or
repayment thereof, 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. Any such appointment shall be
evidenced by an instrument in writing signed by a Responsible Officer of the
Trustee, a copy of which instrument shall be promptly furnished to the Company.
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 bank or trust company or corporation organized and doing business and in
good standing under the laws of the United States of America or of any State 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 authorities. If such
Authenticating Agent publishes reports of condition at least annually, pursuant
to law or the requirements of the aforesaid 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. In case 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 further act
on the part of the Trustee or the Authenticating Agent.

     An Authenticating Agent for any series of Securities may at any time resign
by giving written notice of resignation to the Trustee for such series and to
the Company.  The Trustee for any series of Securities may at any time terminate
the agency of an Authenticating Agent by giving written notice of termination 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 

                                       48

 
shall cease to be eligible in accordance with the provisions of this Section,
the Trustee for such series may appoint a successor Authenticating Agent which
shall be acceptable to the Company and shall give notice of such appointment to
all Holders of Securities of the series with respect to which such
Authenticating Agent will serve in the manner set forth in Section 106. 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
herein. No successor Authenticating Agent shall be appointed unless eligible
under the provisions of this Section.

     The Company agrees to pay to each Authenticating Agent from time to time
reasonable compensation including reimbursement of its reasonable expenses for
its services under this Section.

     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 or in lieu of the Trustee's certificate of authentication, an
alternate certificate of authentication substantially in the following form:

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

                                    ______________, as Trustee

                                    By:__________________________________
                                         as Authenticating Agent

 
                                    By:__________________________________
                                         Authorized Signatory


                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

      SECTION 701.  Disclosure of Names and Addresses of Holders. Every Holder
                    --------------------------------------------              
of Securities or coupons, by receiving and holding the same, agrees with the
Company and the Trustee that neither the Company nor the Trustee nor any
Authenticating Agent nor any Paying Agent nor any Security Registrar shall be
held accountable by reason of the disclosure of any information as to the names
and addresses of the Holders of Securities in accordance with TIA Section 312,
regardless of the source from which such information was derived, and that the
Trustee shall not be held accountable by reason of mailing any material pursuant
to a request made under TIA Section 312(b).

                                       49

 
      SECTION 702.  Reports by Trustee.  Within 60 days after May 15 of each
                    ------------------                                      
year commencing with the first May 15 after the first issuance of Securities
pursuant to this Indenture, the Trustee shall transmit by mail to all Holders of
Securities as provided in TIA Section 313(c) a brief report dated as of such May
15 if required by TIA Section 313(a). 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 the
Company. The Company will notify the Trustee when any securities are listed on
any stock exchange.

      SECTION 703.  Reports by Company.  The Company will:
                    ------------------                    

     (1) file with the Trustee, within 15 days after the Company is required to
     file the same with the Commission, copies of the annual reports and of the
     information, documents and other reports (or copies of such portions of any
     of the foregoing as the Commission may from time to time by rules and
     regulations prescribe) which the Company may be required to file with the
     Commission pursuant to Section 13 or Section 15(d) of the Securities
     Exchange Act of 1934; or, if the Company is not required to file
     information, documents or reports pursuant to either of such Sections, then
     it will file with the Trustee, in accordance with rules and regulations
     prescribed from time to time by the Commission, such of the supplementary
     and periodic information, documents and reports which may be required
     pursuant to Section 13 of the Securities Exchange Act of 1934 in respect of
     a security listed and registered on a national securities exchange as may
     be prescribed from time to time in such rules and regulations;

     (2) file with the Trustee and the Commission, in accordance with rules and
     regulations prescribed from time to time by the Commission, such additional
     information, documents and reports with respect to compliance by the
     Company with the conditions and covenants of this Indenture as may be
     required from time to time by such rules and regulations; and

     (3) transmit by mail to the Holders of Securities, within 30 days after the
     filing thereof with the Trustee, in the manner and to the extent provided
     in TIA Section 313(c), such summaries of any information, documents and
     reports required to be filed by the Company pursuant to paragraphs (1) and
     (2) of this Section as may be required by rules and regulations prescribed
     from time to time by the Commission.

      SECTION 704.  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 later than 15 days after the Regular Record
          Date for interest for each series of Securities, a list, in such form
          as the Trustee may 

                                       50

 
          reasonably require, of the names and addresses of the Holders of
          Registered Securities of such series as of such Regular Record Date,
          or if there is no Regular Record Date for interest for such series of
          Securities, semi-annually, upon such dates as are set forth in the
          Board Resolution or indenture supplemental hereto authorizing such
          series, and

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

provided, however, that, so long as the Trustee is the Security Registrar, no
such list shall be required to be furnished.

                                 ARTICLE EIGHT

                CONSOLIDATION, MERGER, SALE, LEASE OR CONVEYANCE

      SECTION 801.  Consolidations and Mergers of Company and Sales, Leases and
                    -----------------------------------------------------------
Conveyances Permitted Subject to Certain Conditions.  The Company may
- ---------------------------------------------------                  
consolidate with, or sell, lease or convey all or substantially all of its
assets to, or merge with or into any other corporation, provided that in any
such case, (1) either the Company shall be the continuing corporation, or the
successor corporation shall be a corporation organized and existing under the
laws of the United States or a State thereof and such successor corporation
shall expressly assume the due and punctual payment of the principal of (and
premium, if any) and any interest (including all Additional Amounts, if any,
payable pursuant to this Indenture on all of the Securities, according to their
tenor, and the due and punctual performance and observance of all of the
covenants and conditions of this Indenture to be performed by the Company by
supplemental indenture, complying with Article Nine hereof, satisfactory to the
Trustee, executed and delivered to the Trustee by such corporation and (2)
immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of the Company or any Subsidiary as a
result thereof as having been incurred by the Company or such Subsidiary at the
time of such transaction, no Event of Default, and no event which, after notice
or the lapse of time, or both, would become an Event of Default, shall have
occurred and be continuing.

      SECTION 802.  Rights and Duties of Successor Corporation.  In case of any
                    ------------------------------------------                 
such consolidation, merger, sale, lease or conveyance and upon any such
assumption by the successor corporation, such successor corporation shall
succeed to and be substituted for the Company, with the same effect as if it had
been named herein as the party of the first part, and the predecessor
corporation, except in the event of a lease, shall be relieved of any further
obligation under this Indenture and the Securities.  Such successor corporation
thereupon may cause to be signed, and may issue either in its own name or in the
name of the Company, any or all of the Securities issuable hereunder which
theretofore shall not have been signed by the Company and delivered to the
Trustee; and, upon the order of such successor corporation, instead of the
Company, and subject to 

                                       51

 
all the terms, conditions and limitations in this Indenture prescribed, the
Trustee shall authenticate and shall deliver any Securities which previously
shall have been signed and delivered by the officers of the Company to the
Trustee for authentication, and any Securities which such successor corporation
thereafter shall cause to be signed and delivered to the Trustee for that
purpose. All the Securities so issued shall in all respects have the same legal
rank and benefit under this Indenture as the Securities theretofore or
thereafter issued in accordance with the terms of this Indenture as though all
of such Securities had been issued at the date of the execution hereof.

     In case of any such consolidation, merger, sale, lease or conveyance, such
changes in phraseology and form (but not in substance) may be made in the
Securities thereafter to be issued as may be appropriate.

      SECTION 803.  Officers' Certificate and Opinion of Counsel.  Any
                    --------------------------------------------      
consolidation, merger, sale, lease or conveyance permitted under Section 801 is
also subject to the condition that the Trustee receive an Officers' Certificate
and an Opinion of Counsel to the effect that any such consolidation, merger,
sale, lease or conveyance, and the assumption by any successor corporation,
complies with the provisions of this Article and that all conditions precedent
herein provided for relating to such transaction have been complied with.

                                  ARTICLE NINE

                            SUPPLEMENTAL INDENTURES

      SECTION 901.  Supplemental Indentures without Consent of Holders.  Without
                    --------------------------------------------------          
the consent of any Holders of Securities or coupons, the Company, when
authorized by or pursuant to 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 contained; 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 for the benefit of the Holders
     of all or any series of Securities (and if such Events of Default are to be
     for the benefit of less than all series of Securities, stating that such
     Events of Default are expressly being included solely for the benefit of
     such series); provided, however, that in respect of any such additional
     Events of Default such supplemental indenture may provide for a particular
     period of grace 

                                       52

 
     after default (which period may be shorter or longer than that allowed in
     the case of other defaults) or may provide for an immediate enforcement
     upon such default or may limit the remedies available to the Trustee upon
     such default or may limit the right of the Holders of a majority in
     aggregate principal amount of that or those series of Securities to which
     such additional Events of Default apply to waive such default; or

     (4) to add to or change any of the provisions of this Indenture to provide
     that Bearer Securities may be registrable as to principal, to change or
     eliminate any restrictions on the payment of principal of or any premium or
     interest on Bearer Securities, to permit Bearer Securities to be issued in
     exchange for Registered Securities, to permit Bearer Securities to be
     issued in exchange for Bearer Securities of other authorized denominations
     or to permit or facilitate the issuance of Securities in uncertificated
     form, provided that any such action shall not adversely affect the
     interests of the Holders of Securities of any series or any related coupons
     in any material respect; or

     (5) to change or eliminate any of the provisions of this Indenture,
     provided that any such change or elimination shall become effective only
     when there is no Security Outstanding of any series created prior to the
     execution of such supplemental indenture which is entitled to the benefit
     of such provision; or

     (6)  to secure the Securities; or

     (7) to establish the form or terms of Securities of any series and any
     related coupons as permitted by Sections 201 and 301, including the
     provisions and procedures relating to Securities convertible into Common
     Shares or Preferred Shares, as the case may be; 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; or

     (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 which shall not be inconsistent with the provisions of
     this Indenture, provided such provisions shall not adversely affect the
     interests of the Holders of Securities of any series or any related coupons
     in any material respect; or

     (10) to supplement any of the provisions of this Indenture to such extent
     as shall be necessary to permit or facilitate the defeasance and discharge
     of any series of Securities pursuant to Sections 1401, 1402 and 1403;
     provided that any such action shall not adversely affect the interests of
     the Holders of Securities of such series and any related coupons or any
     other series of Securities in any material respect.

                                       53

 
      SECTION 902.  Supplemental Indentures with Consent of Holders.  With the
                    -----------------------------------------------           
consent of the Holders of not less than a majority in principal amount of all
Outstanding Securities affected by such supplemental indenture, by Act of said
Holders delivered to the Company and the Trustee, the Company, when authorized
by or pursuant to 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 and any related coupons 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 premium, if any, on)
     or any installment of principal of or interest on, any Security; or reduce
     the principal amount thereof or the rate or amount of interest thereon or
     any Additional Amounts payable in respect thereof, or any premium payable
     upon the redemption thereof, or change any obligation of the Company to pay
     Additional Amounts pursuant to Section 1008 (except as contemplated by
     Section 801(1) and permitted by Section 901(1)), 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 the amount thereof provable in bankruptcy pursuant to
     Section 504, or adversely affect any right of repayment at the option of
     the Holder of any Security, or change any Place of Payment where, or the
     currency or currencies, currency unit or units or composite currency or
     currencies 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 or repayment at the option of the Holder, on or after the
     Redemption Date or the Repayment Date, as the case may be), 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 with respect to such series (or compliance with certain provisions
     of this Indenture or certain defaults hereunder and their consequences)
     provided for in this Indenture, or reduce the requirements of Section 1504
     for quorum or voting, or

     (3) modify any of the provisions of this Section, Section 513 or Section
     1008, except to increase the required percentage to effect such action 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.

     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.

                                       54

 
     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.

      SECTION 903.  Execution of Supplemental Indentures.  In executing, or
                    ------------------------------------                   
accepting the additional trusts created by, any supplemental indenture permitted
by this Article or the modification thereby of the trusts created by this
Indenture, the Trustee shall be entitled to receive, and 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 and of any coupon appertaining
thereto shall be bound thereby.

      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 as then in effect.

      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 TEN

                                   COVENANTS

      SECTION 1001.  Payment of Principal, Premium, if any, Interest and
                     ---------------------------------------------------
Additional Amounts. The Company covenants and agrees for the benefit of the
- ------------------                                                         
Holders of each series of Securities that it will duly and punctually pay the
principal of (and premium, if any) and interest on and any Additional Amounts
payable in respect of the Securities of that series in accordance with the terms
of such series of Securities, any coupons appertaining thereto and this
Indenture. Unless otherwise specified as contemplated by Section 301 with
respect to any series of Securities, any interest due on and any Additional
Amounts payable in respect of Bearer Securities on or before Maturity, other

                                       55

 
than Additional Amounts, if any, payable as provided in Section 1008 in respect
of principal of (or premium, if any, on) such a Security, shall be payable only
upon presentation and surrender of the several coupons for such interest
installments as are evidenced thereby as they severally mature. Unless otherwise
specified with respect to Securities of any series pursuant to Section 301, at
the option of the Company, all payments of principal may be paid by check to the
registered Holder of the Registered Security or other person entitled thereto
against surrender of such Security.

      SECTION 1002.  Maintenance of Office or Agency.  If Securities of a series
                     -------------------------------                            
are issuable only as Registered Securities, the Company shall 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 or
conversion, 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 each such office or agency. If Securities of a series
are issuable as Bearer Securities, the Company will maintain: (A) in the Borough
of Manhattan, The City of New York, an office or agency where any Registered
Securities of that series may be presented or surrendered for payment or
conversion, where any Registered Securities of that series may be surrendered
for registration of transfer, where Securities of that series may be surrendered
for exchange, where notices and demands to or upon the Company in respect of the
Securities of that series and this Indenture may be served and where Bearer
Securities of that series and related coupons may be presented or surrendered
for payment or conversion in the circumstances described in the following
paragraph (and not otherwise); (B) subject to any laws or regulations applicable
thereto, in a Place of Payment for that series which is located outside the
United States, an office or agency where Securities of that series and related
coupons may be presented and surrendered for payment (including payment of any
Additional Amounts payable on Securities of that series pursuant to Section
1008) or conversion; provided, however, that if the Securities of that series
are listed on the Luxembourg Stock Exchange or any other stock exchange located
outside the United States and such stock exchange shall so require, the Company
will maintain a Paying Agent for the Securities of that series in Luxembourg or
any other required city located outside the United States, as the case may be,
so long as the Securities of that series are listed on such exchange; and (C)
subject to any laws or regulations applicable thereto, in a Place of Payment for
that series located outside the United States an office or agency where any
Registered Securities of that series may be surrendered for registration of
transfer, where Securities of that series may be surrendered for exchange and
where notices and demand 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 each 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 (except that Bearer
Securities of that series and the related coupons may be presented and
surrendered for payment (including payment of any Additional Amounts payable on
Bearer Securities of that series pursuant to Section 1008) or conversion at the
offices specified in the Security, in London, England, and the Company hereby
appoints the same as its agent to receive such presentations, surrenders,
notices and demands), and 

                                       56

 
the Company hereby appoints the Trustee its agent to receive all such
presentations, surrenders, notices and demands.

     Unless otherwise specified with respect to any Securities pursuant to
Section 301, no payment of principal, premium or interest on or Additional
Amounts in respect of Bearer Securities shall be made at any office or agency of
the Company in the United States or by check mailed to any address in the United
States or by transfer to an account maintained with a bank located in the United
States; provided, however, that, if the Securities of a series are payable in
Dollars, payment of principal of and any premium and interest on any Bearer
Security (including any Additional Amounts payable on Securities of such series
pursuant to Section 1008) shall be made at the office of the Company's Paying
Agent in the Borough of Manhattan, The City of New York, if (but only if)
payment in Dollars of the full amount of such principal, premium, interest or
Additional Amounts, as the case may be, at all offices or agencies outside the
United States maintained for the purpose by the Company in accordance with this
Indenture, is illegal or effectively precluded by exchange controls or other
similar restrictions.

     The Company may 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 of 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 accordance with the requirements set forth above 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. Unless otherwise specified with respect to
any Securities pursuant to Section 301 with respect to a series of Securities,
the Company hereby designates as a Place of Payment for each series of
Securities the office or agency of the Company in the Borough of Manhattan, The
City of New York, and initially appoints the Trustee at its Corporate Trust
Office as Paying Agent in such city and as its agent to receive all such
presentations, surrenders, notice and demands.

     Unless otherwise specified with respect to any Securities pursuant to
Section 301, if and so long as the Securities of any series (i) are denominated
in a Foreign Currency or (ii) may be payable in a Foreign Currency, or so long
as it is required under any other provision of the Indenture, then the Company
will maintain with respect to each such series of Securities, or as so required,
at least one exchange rate agent.

      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 any Securities and any related coupons, it will, on or before each due date
of the principal of (and premium, if any), or interest on or Additional Amounts
in respect of, any of the Securities of that series, segregate and hold in trust
for the benefit of the Persons entitled thereto a sum in the currency or
currencies, currency unit or 

                                       57

 
units or composite currency or currencies in which the Securities of such series
are payable (except as otherwise specified pursuant to Section 301 for the
Securities of such series) sufficient to pay the principal (and premium, if any)
or interest or Additional Amounts 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 and any related coupons, it will, before each due date of the
principal of (and premium, if any), or interest on or Additional Amounts in
respect of, any Securities of that series, deposit with a Paying Agent a sum (in
the currency or currencies, currency unit or units or composite currency or
currencies described in the preceding paragraph) sufficient to pay the principal
(and premium, if any) or interest or Additional Amounts, so becoming due, such
sum to be held in trust for the benefit of the Persons entitled to such
principal, premium or interest or Additional Amounts and (unless such Paying
Agent is the Trustee) the Company will promptly notify the Trustee of its action
or failure so to act.

     The Company will cause each Paying Agent other than the Trustee to execute
and deliver to the Trustee an instrument in which such Paying Agent shall agree
with the Trustee, subject to the provisions of this Section, that such Paying
Agent will

     (1) hold all sums held by it for the payment of principal of (and premium,
     if any) or interest on Securities or Additional Amounts in trust for the
     benefit of the Persons entitled thereto until such sums shall be paid to
     such Persons or otherwise disposed of as herein provided;

     (2) give the Trustee notice of any default by the Company (or any other
     obligor upon the Securities) in the making of any such payment of principal
     (and premium, if any) or interest or Additional Amounts; and

     (3) at any time during the continuance of any Event of Default upon the
     written request of the Trustee, forthwith pay to the Trustee all sums so
     held in trust by such Paying Agent.

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

     Except as otherwise provided in the Securities of any series, 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,
or any Additional Amounts in respect of, any Security of any series and
remaining unclaimed for two years after such principal (and premium, if any),
interest or 

                                       58

 
Additional Amounts has become due and payable shall be paid to the Company upon
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 of such principal of (and
premium, if any) or interest on, or any Additional Amounts in respect of, any
Security, without interest thereon, 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; provided, however, that the Trustee
or such Paying Agent, before being required to make any such repayment, may at
the expense of the Company cause to be published once, in an Authorized
Newspaper, notice that such money remains unclaimed and that, after a date
specified therein, which shall not be less than 30 days from the date of such
publication, any unclaimed balance of such money then remaining will be repaid
to the Company.

      SECTION 1004.  Existence.  Subject to Article Eight, 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 right
or franchise if the Board of Directors shall determine that the preservation
thereof is no longer desirable in the conduct of the business of the Company.

      SECTION 1005.  Maintenance of Properties.  The Company will cause all of
                     -------------------------                                
it properties used or useful in the conduct of its business or the business of
any Subsidiary to be maintained and kept in good condition, repair and working
order and supplied with all necessary equipment and will cause to be made all
necessary repairs, renewals, replacements, betterments and improvements thereof,
all as in the judgment of the Company may be necessary so that the business
carried on in connection therewith may be properly and advantageously conducted
at all times.

      SECTION 1006.  Payment of Taxes and Other Claims.  The Company will pay or
                     ---------------------------------                          
discharge or cause to be paid or discharged, before the same shall become
delinquent, (1) all taxes, assessments and governmental charges levied or
imposed upon it or any Subsidiary or upon the income, profits or property of the
Company or any Subsidiary, and (2) all lawful claims for labor, materials and
supplies which, if unpaid, might by law become a lien upon the property of the
Company or any Subsidiary; provided, however, that the Company shall not be
required to pay or discharge or cause to be paid or discharged any such tax,
assessment, charge or claim whose amount, applicability or validity is being
contested in good faith by appropriate proceedings.

      SECTION 1007.  Statement as to Compliance.  The Company will deliver to
                     --------------------------                              
the Trustee, within 120 days after the end of each fiscal year, a certificate
from the principal executive officer, principal financial officer or principal
accounting officer as to his or her knowledge of the Company's compliance with
all conditions and covenants under this Indenture and, in the event of any
noncompliance, specifying such noncompliance and the nature and status thereof.
For purposes of this Section 1004, such compliance shall be determined without
regard to any period of grace or requirement of notice under this Indenture.

                                       59

 
      SECTION 1008.  Additional Amounts.  If any Securities of a series provide
                     ------------------                                        
for the payment of Additional Amounts, the Company will pay to the Holder of any
Security of such series or any coupon appertaining thereto Additional Amounts as
may be specified as contemplated by Section 301.  Whenever in this Indenture
there is mentioned, in any context except in the case of Section 502(1), the
payment of the principal of or any premium or interest on, or in respect of, any
Security of any series or payment of any related coupon or the net proceeds
received on the sale or exchange of any Security of any series, such mention
shall be deemed to include mention of the payment of Additional Amounts provided
by the terms of such series established pursuant to Section 301 to the extent
that, in such context, Additional Amounts are, were or would be payable in
respect thereof pursuant to such terms and express mention of the payment of
Additional Amounts (if applicable) in any provisions hereof shall not be
construed as excluding Additional Amounts in those provisions hereof where such
express mention is not made.

     Except as otherwise specified as contemplated by Section 301, if the
Securities of a series provide for the payment of Additional Amounts, at least
10 days prior to the first Interest Payment Date with respect to that series of
Securities or if the Securities of that series will not bear interest prior to
Maturity, the first day on which a payment of principal and any premium is made,
and at least 10 days prior to each date of payment of principal and any premium
or interest if there has been any change with respect to the matters set forth
in the below-mentioned Officers' Certificate, the Company will furnish the
Trustee and the Company's principal Paying Agent or Paying Agents, if other than
the Trustee, with an Officers' Certificate instructing the Trustee and such
Paying Agent or Paying Agents whether such payment of principal of and any
premium or interest on the Securities of that series shall be made to Holders of
Securities of that series or any related coupons who are not United States
persons without withholding for or on account of any tax, assessment or other
governmental charge described in the Securities of the series. If any such
withholding shall be required, then such Officers' Certificate shall specify by
country the amount, if any, required to be withheld on such payments to such
Holders of Securities of that series or related coupons and the Company will pay
to the Trustee or such Paying Agent the Additional Amounts required by the terms
of such Securities. In the event that the Trustee or any Paying Agent, as the
case may be, shall not so receive the above-mentioned certificate, then the
Trustee or such Paying Agent shall be entitled (i) to assume that no such
withholding or deduction is required with respect to any payment of principal or
interest with respect to any Securities of a series or related coupons until it
shall have received a certificate advising otherwise and (ii) to make all
payments of principal and interest with respect to the Securities of a series or
related coupons without withholding or deductions until otherwise advised. The
Company covenants to indemnify the Trustee and any Paying Agent for, and to hold
them harmless against, any loss, liability or expense reasonably incurred
without negligence or bad faith on their part arising out of or in connection
with actions taken or omitted by any of them or in reliance on any Officers'
Certificate furnished pursuant to this Section or in reliance on the Company's
not furnishing such an Officers' Certificate.

      SECTION 1009.  Waiver of Certain Covenants.  The Company may omit in any
                     ---------------------------                              
particular instance to comply with any term, provision or condition set forth in
Sections 1004 to 1006, inclusive, if before or after the time for such
compliance the Holders of at least a majority in 

                                       60

 
principal amount of all outstanding Securities of such series, by Act of such
Holders, either waive such compliance in such instance or generally waive
compliance with such covenant or condition, but no such waiver shall extend to
or affect such covenant 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 ELEVEN

                            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.

      SECTION 1102.  Election to Redeem; Notice to Trustee. The election of the
                     -------------------------------------                     
Company to redeem any Securities shall be evidenced by or pursuant to a Board
Resolution.  In case of any redemption at the election of the Company of less
than all of the Securities of any series, the Company shall, at least 45 days
prior to the giving of the notice of redemption in Section 1104 (unless a
shorter notice shall be satisfactory to the Trustee), notify the Trustee of such
Redemption Date and of the principal amount of Securities of such series 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 issued on the same day with the same terms
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 issued on such date with the same terms
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.

     The Trustee shall promptly notify the Company and the Security Registrar
(if other than itself) 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.

                                       61

 
     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 Security redeemed or to be redeemed only in part, to the portion of
the principal amount of such Security which has been or is to be redeemed.

      SECTION 1104.  Notice of Redemption.  Notice of redemption shall be given
                     --------------------                                      
in the manner provided in Section 106, not less than 30 days nor more than 60
days prior to the Redemption Date, unless a shorter period is specified by the
terms of such series established pursuant to Section 301, to each Holder of
Securities to be redeemed, but failure to give such notice in the manner herein
provided to the Holder of any Security designated for redemption as a whole or
in part, or any defect in the notice to any such Holder, shall not affect the
validity of the proceedings for the redemption of any other such Security or
portion thereof.

     Any notice that is mailed to the Holders of Registered Securities in the
manner herein provided shall be conclusively presumed to have been duly given,
whether or not the Holder receives the notice.

     All notices of redemption shall state:

     (1)  the Redemption Date,

     (2) the Redemption Price, accrued interest to the Redemption Date payable
     as provided in Section 1106, if any, and Additional Amounts, if any,

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

     (4) in case any Security is to be redeemed in part only, the notice which
     relates to such Security shall state that on and after the Redemption Date,
     upon surrender of such Security, the holder will receive, without a charge,
     a new Security or Securities of authorized denominations for the principal
     amount thereof remaining unredeemed,

     (5) that on the Redemption Date the Redemption Price and accrued interest
     to the Redemption Date payable as provided in Section 1106, if any, will
     become due and payable upon each such Security, or the portion thereof, to
     be redeemed and, if applicable, that interest thereon shall cease to accrue
     on and after said date,

     (6) the Place or Places of Payment where such Securities, together in the
     case of Bearer Securities with all coupons appertaining thereto, if any,
     maturing after the Redemption Date, are to be surrendered for payment of
     the Redemption Price and accrued interest, if any, or for conversion,

                                       62

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

     (8) that, unless otherwise specified in such notice, Bearer Securities of
     any series, if any, surrendered for redemption must be accompanied by all
     coupons maturing subsequent to the date fixed for redemption or the amount
     of any such missing coupon or coupons will be deducted from the Redemption
     Price, unless security or indemnity satisfactory to the Company, the
     Trustee for such series and any Paying Agent is furnished,

     (9) if Bearer Securities of any series are to be redeemed and any
     Registered Securities of such series are not to be redeemed, and if such
     Bearer Securities may be exchanged for Registered Securities not subject to
     redemption on this Redemption Date pursuant to Section 305 or otherwise,
     the last date, as determined by the Company, on which such exchanges may be
     made,

     (10) the CUSIP number of such Security, if any, and

     (11) if applicable, that a Holder of Securities who desires to convert
     Securities for redemption must satisfy the requirements for conversion
     contained in such Securities, the then existing conversion price or rate,
     and the date and time when the option to convert shall expire.

     Notice of redemption of Securities to be redeemed 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.  At least one Business Day
                     ---------------------------                            
prior to any Redemption Date, the Company shall deposit with the Trustee or with
a Paying Agent (or, if the Company is acting as its own Paying Agent, which it
may not do in the case of a sinking fund payment under Article Twelve, segregate
and hold in trust as provided in Section 1003) an amount of money in the
currency or currencies, currency unit or units or composite currency or
currencies in which the Securities of such series are payable (except as
otherwise specified pursuant to Section 301 for the Securities of such series)
sufficient to pay on the Redemption Date the Redemption Price of, and (except if
the Redemption Date shall be an Interest Payment Date) accrued interest on, all
the Securities or portions thereof 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 in the currency or currencies, currency unit or units or
composite currency or currencies in which the Securities of such series are
payable (except as otherwise specified pursuant to Section 301 for the
Securities of such series) (together with accrued interest, if any, to the
Redemption Date), and from and after such date (unless the Company shall default
in the payment of the Redemption Price and accrued interest) such Securities
shall, if the same were interest-bearing, cease to bear interest and the coupons
for such interest appertaining to any Bearer Securities so to be redeemed,
except to the extent provided below, shall be void. Upon 

                                       63

 
surrender of any such Security for redemption in accordance with said notice,
together with all coupons, if any, appertaining thereto maturing after the
Redemption Date, such Security shall be paid by the Company at the Redemption
Price, together with accrued interest, if any, to the Redemption Date; provided,
however, that installments of interest on Bearer Securities whose Stated
Maturity is on or prior to the Redemption Date shall be payable only at an
office or agency located outside the United States (except as otherwise provided
in Section 1002) and, unless otherwise specified as contemplated by Section 301,
only upon presentation and surrender of coupons for such interest; and provided
further that, except as otherwise provided with respect to Securities
convertible into Common Stock or Preferred Stock, installments of interest on
Registered Securities 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 Bearer Security surrendered for redemption shall not be accompanied
by all appurtenant coupons maturing after the Redemption Date, such Security may
be paid after deducting from the Redemption Price an amount equal to the face
amount of all such missing coupons, or the surrender of such missing coupon or
coupons may be waived by the Company and the Trustee if there be furnished to
them such security or indemnity as they may require to save each of them and any
Paying Agent harmless. If thereafter the Holder of such Security shall surrender
to the Trustee or any Paying Agent any such missing coupon in respect of which a
deduction shall have been made from the Redemption Price, such Holder shall be
entitled to receive the amount so deducted; provided, however, that interest
represented by coupons shall be payable only at an office or agency located
outside the United States (except as otherwise provided in Section 1002) and,
unless otherwise specified as contemplated by Section 301, only upon
presentation and surrender of those coupons.

     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 borne by the Security.

      SECTION 1107.  Securities Redeemed in Part.  Any Registered Security which
                     ---------------------------                                
is to be redeemed only in part (pursuant to the provisions of this Article or of
Article Twelve) 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, 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.

                                       64

 
                                ARTICLE TWELVE

                                 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 such Securities of any series is herein referred to as an "optional
sinking fund payment."  If provided for by the terms of any Securities of any
series, the cash amount of any mandatory 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 may, in satisfaction of all or any part of any mandatory sinking fund
payment with respect to the Securities of a series, (1) deliver Outstanding
Securities of such series (other than any previously called for redemption)
together in the case of any Bearer Securities of such series with all unmatured
coupons appertaining thereto and (2) apply as a credit Securities of such 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, as provided for
by the terms of such Securities, or which have otherwise been acquired by the
Company; provided that such Securities so delivered or applied as a credit have
not been previously so credited. Such Securities shall be received and credited
for such purpose by the Trustee at the applicable Redemption Price specified in
such Securities for redemption through operation of the sinking fund and the
amount of such mandatory sinking fund payment shall be reduced accordingly.

      SECTION 1203.  Redemption of Securities for Sinking Fund.  Not less than
                     -----------------------------------------                
60 days prior to each sinking fund payment date for Securities of any series,
the Company will deliver to the Trustee an Officers' Certificate specifying the
amount of the next ensuing mandatory 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 in the currency or currencies, currency unit or
units or composite currency or currencies in which the Securities of such series
are payable (except as otherwise specified pursuant to Section 301 for the
Securities of such series) and the portion thereof, if any, which is to be
satisfied by delivering and crediting Securities of that series pursuant to
Section 1202, and the optional amount, if any, to be added in cash to the next
ensuing mandatory sinking fund payment, and will also deliver to the Trustee any
Securities to be so delivered and credited.  If such Officers' Certificate shall
specify an optional amount to be added in cash to the next ensuing mandatory
sinking fund payment, the Company shall thereupon be obligated to pay the amount
therein specified. Not less than 30 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 

                                       65

 
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.

                                ARTICLE THIRTEEN

                       REPAYMENT AT THE OPTION OF HOLDERS

      SECTION 1301.  Applicability of Article.  Repayment of Securities of any
                     ------------------------                                 
series before their Stated Maturity at the option of Holders thereof shall be
made in accordance with the terms of such Securities, if any, and (except as
otherwise specified by the terms of such series established pursuant to Section
301) in accordance with this Article.

      SECTION 1302.  Repayment of Securities.  Securities of any series subject
                     -----------------------                                   
to repayment in whole or in part at the option of the Holders thereof will,
unless otherwise provided in the terms of such Securities, be repaid at a price
equal to the principal amount thereof, together with interest, if any, thereon
accrued to the Repayment Date specified in or pursuant to the terms of such
Securities. The Company covenants that at least one Business Day prior to the
Repayment Date it will 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 in the currency or currencies,
currency unit or units or composite currency or currencies in which the
Securities of such series are payable (except as otherwise specified pursuant to
Section 301 for the Securities of such series) sufficient to pay the principal
(or, if so provided by the terms of the Securities of any series, a percentage
of the principal) of, and (except if the Repayment Date shall be an Interest
Payment Date) accrued interest on, all the Securities or portions thereof, as
the case may be, to be repaid on such date.

      SECTION 1303.  Exercise of Option.  Securities of any series subject to
                     ------------------                                      
repayment at the option of the Holders thereof will contain an "Option to Elect
Repayment" form on the reverse of such Securities.  In order for any Security to
be repaid at the option of the Holder, the Trustee must receive at the Place of
Payment therefor specified in the terms of such Security (or at such other place
or places of which the Company shall from time to time notify the Holders of
such Securities) not earlier than 60 days nor later than 30 days prior to the
Repayment Date (1) the Security so providing for such repayment together with
the "Option to Elect Repayment" form on the reverse thereof duly completed by
the Holder (or by the Holder's attorney duly authorized in writing) or (2) a
telegram, telex, facsimile transmission or a letter from a member of a national
securities exchange, or the National Association of Securities Dealers, Inc.
("NASD"), or a commercial bank or trust company in the United States setting
forth the name of the Holder of the Security, the principal amount of the
Security, the principal amount of the Security to be repaid, the CUSIP number,
if any, or a description of the tenor and terms of the Security, a statement
that the option to elect repayment is being exercised thereby and a guarantee
that the Security to be repaid, together with the duly completed form entitled
"Option to Elect Repayment" on the reverse of the Security, will be received 

                                       66

 
by the Trustee not later than the fifth Business Day after the date of such
telegram, telex, facsimile transmission or letter; provided, however, that such
telegram, telex, facsimile transmission or letter shall only be effective if
such Security and form duly completed are received by the Trustee by such fifth
Business Day. If less than the entire principal amount of such Security is to be
repaid in accordance with the terms of such Security, the principal amount of
such Security to be repaid, in increments of the minimum denomination for
Securities of such series, and the denomination or denominations of the Security
or Securities to be issued to the Holder for the portion of the principal amount
of such Security surrendered that is not to be repaid, must be specified. The
principal amount of any Security providing for repayment at the option of the
Holder thereof may not be repaid in part if, following such repayment, the
unpaid principal amount of such Security would be less than the minimum
authorized denomination of Securities of the series of which such Security to be
repaid is a part. Except as otherwise may be provided by the terms of any
Security providing for repayment at the option of the Holder thereof, exercise
of the repayment option by the Holder shall be irrevocable unless waived by the
Company.

      SECTION 1304.  When Securities Presented for Repayment become due and
                     ------------------------------------------------------
payable.  If Securities of any series providing for repayment at the option of
- -------                                                                       
the Holders thereof shall have been surrendered as provided in this Article and
as provided by or pursuant to the terms of such Securities, such Securities or
the portions thereof, as the case may be, to be repaid shall become due and
payable and shall be paid by the Company on the Repayment Date therein
specified, and on and after such Repayment Date (unless the Company shall
default in the payment of such Securities on such Repayment Date) such
Securities shall, if the same were interest-bearing, cease to bear interest and
the coupons for such interest appertaining to any Bearer Securities so to be
repaid, except to the extent provided below, shall be void. Upon surrender of
any such Security for repayment in accordance with such provisions, together
with all coupons, if any, appertaining thereto maturing after the Repayment
Date, the principal amount of such Security so to be repaid shall be paid by the
Company, together with accrued interest, if any, to the Repayment Date;
provided, however, that coupons whose Stated Maturity is on or prior to the
Repayment Date shall be payable only at an office or agency located outside the
United States (except as otherwise provided in Section 1002) and, unless
otherwise specified pursuant to Section 301, only upon presentation and
surrender of such coupons; and provided further that, in the case of Registered
Securities, installments of interest, if any, whose Stated Maturity is on or
prior to the Repayment Date shall be payable (but without interest thereon,
unless the Company shall default in the payment thereof) 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 Bearer Security surrendered for repayment shall not be accompanied
by all appurtenant coupons maturing after the Repayment Date, such Security may
be paid after deducting from the amount payable therefor as provided in Section
1302 an amount equal to the face amount of all such missing coupons, or the
surrender of such missing coupon or coupons may be waived by the Company and the
Trustee if there be furnished to them such security or indemnity as they may
require to save each of them and any Paying Agent harmless. If thereafter the
Holder of such Security shall surrender to the Trustee or any Paying Agent any
such missing coupon in respect of 

                                       67

 
which a deduction shall have been made as provided in the preceding sentence,
such Holder shall be entitled to receive the amount so deducted; provided,
however, that interest represented by coupons shall be payable only at an office
or agency located outside the United States (except as otherwise provided in
Section 1002) and, unless otherwise specified as contemplated by Section 301,
only upon presentation and surrender of those coupons.

     If the principal amount of any Security surrendered for repayment shall not
be so repaid upon surrender thereof, such principal amount (together with
interest, if any, thereon accrued to such Repayment Date) shall, until paid,
bear interest from the Repayment Date at the rate of interest or Yield to
Maturity (in the case of Original Issue Discount Securities) set forth in such
Security.

      SECTION 1305.  Securities Repaid in Part.  Upon surrender of any
                     -------------------------                        
Registered Security which is to be repaid in part only, the Company shall
execute and the Trustee shall authenticate and deliver to the Holder of such
Security, without service charge and at the expense of the Company, a new
Registered Security or Securities of the same series, of any authorized
denomination specified by the Holder, in an aggregate principal amount equal to
and in exchange for the portion of the principal of such Security so surrendered
which is not to be repaid.

                                ARTICLE FOURTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE

      SECTION 1401.  Applicability of Article; Company's Option to Effect
                     ----------------------------------------------------
Defeasance or Covenant Defeasance.  If, pursuant to Section 301, provision is
- ---------------------------------                                            
made for either or both of (a) defeasance of the Securities of or within a
series under Section 1402 or (b) covenant defeasance of the Securities of or
within a series under Section 1403, then the provisions of such Section or
Sections, as the case may be, together with the other provisions of this Article
(with such modifications thereto as may be specified pursuant to Section 301
with respect to any Securities), shall be applicable to such Securities and any
coupons appertaining thereto, and the Company may at its option by Board
Resolution, at any time, with respect to such Securities and any coupons
appertaining thereto, elect to have Section 1402 (if applicable) or Section 1403
(if applicable) be applied to such Outstanding Securities and any coupons
appertaining thereto upon compliance with the conditions set forth below in this
Article.

      SECTION 1402.  Defeasance and Discharge.  Upon the Company's exercise of
                     ------------------------                                 
the above option applicable to this Section with respect to any Securities of or
within a series, the Company shall be deemed to have been discharged from its
obligations with respect to such Outstanding Securities and any coupons
appertaining thereto on the date the conditions set forth in Section 1404 are
satisfied (hereinafter, "defeasance").  For this purpose, such defeasance means
that the Company shall be deemed to have paid and discharged the entire
indebtedness represented by such Outstanding Securities and any coupons
appertaining thereto, which shall thereafter be deemed to be "Outstanding" only
for the purposes of Section 1405 and the other Sections of this Indenture
referred to in clauses (A) and (B) below, and to have satisfied all of its other
obligations under such 

                                       68

 
Securities and any coupons appertaining thereto and this Indenture insofar as
such Securities and any coupons appertaining thereto are concerned (and the
Trustee, at the expense of the Company, shall execute proper instruments
acknowledging the same), except for the following which shall survive until
otherwise terminated or discharged hereunder: (A) the rights of Holders of such
Outstanding Securities and any coupons appertaining thereto to receive, solely
from the trust fund described in Section 1404 and as more fully set forth in
such Section, payments in respect of the principal of (and premium, if any) and
interest, if any, on such Securities and any coupons appertaining thereto when
such payments are due, (B) the Company's obligations with respect to such
Securities under Sections 305, 306, 1002 and 1003 and with respect to the
payment of Additional Amounts, if any, on such Securities as contemplated by
Section 1008, (C) the rights, powers, trusts, duties and immunities of the
Trustee hereunder and (D) this Article. Subject to compliance with this Article
Fourteen, the Company may exercise its option under this Section notwithstanding
the prior exercise of its option under Section 1403 with respect to such
Securities and any coupons appertaining thereto.

      SECTION 1403.  Covenant Defeasance.  Upon the Company's exercise of the
                     -------------------                                     
above option applicable to this Section with respect to any Securities of or
within a series, the Company shall be released from its obligations under
Section 1004 to 1006, inclusive, and, if specified pursuant to Section 301, its
obligations under any other covenant, with respect to such Outstanding
Securities and any coupons appertaining thereto on and after the date the
conditions set forth in Section 1404 are satisfied (hereinafter, "covenant
defeasance"), and such Securities and any coupons appertaining thereto shall
thereafter be deemed to be not "Outstanding" for the purposes of any direction,
waiver, consent or declaration or Act of Holders (and the consequences of any
thereof) in connection with Sections 1004 to 1006, inclusive, or such other
covenant, but shall continue to be deemed "Outstanding" for all other purposes
hereunder. For this purpose, such covenant defeasance means that, with respect
to such Outstanding Securities and any coupons appertaining thereto, the Company
may omit to comply with and shall have no liability in respect of any term,
condition or limitation set forth in any such Section or such other covenant,
whether directly or indirectly, by reason of any reference elsewhere herein to
any such Section or such other covenant or by reason of reference in any such
Section or such other covenant to any other provision herein or in any other
document and such omission to comply shall not constitute a default or an Event
of Default under Section 501(4) or 501(8) or otherwise, as the case may be, but,
except as specified above, the remainder of this Indenture and such Securities
and any coupons appertaining thereto shall be unaffected thereby.

      SECTION 1404.  Conditions to Defeasance or Covenant Defeasance.  The
                     -----------------------------------------------      
following shall be the conditions to application of Section 1402 or Section 1403
to any Outstanding Securities of or within a series and any coupons appertaining
thereto:

     (a) The Company shall irrevocably have deposited or caused to be deposited
     with the Trustee (or another trustee satisfying the requirements of Section
     607 who shall agree to comply with the provisions of this Article Fourteen
     applicable to it) as trust funds in trust for the purpose of making the
     following payments, specifically pledged as security for, and dedicated
     solely to, the benefit of the Holders of such Securities and any coupons
     appertaining thereto, (1) an amount in such currency, currencies or
     currency unit in which 

                                       69

 
     such Securities and any coupons appertaining thereto are then specified as
     payable at Stated Maturity, or (2) Government Obligations applicable to
     such Securities and coupons appertaining thereto (determined on the basis
     of the currency, currencies or currency unit in which such Securities and
     coupons appertaining thereto are then specified as payable at Stated
     Maturity) which through the scheduled payment of principal and interest in
     respect thereof in accordance with their terms will provide, not later than
     one day before the due date of any payment of principal of (and premium, if
     any) and interest, if any, on such Securities and any coupons appertaining
     thereto, money in an amount, or (3) a combination thereof, in any case, in
     an amount, sufficient, without consideration of any reinvestment of such
     principal and interest, 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, and which shall be applied
     by the Trustee (or other qualifying trustee) to pay and discharge, (i) the
     principal of (and premium, if any) and interest, if any, on such
     Outstanding Securities and any coupons appertaining thereto on the Stated
     Maturity of such principal or installment of principal or interest and (ii)
     any mandatory sinking fund payments or analogous payments applicable to
     such Outstanding Securities and any coupons appertaining thereto on the day
     on which such payments are due and payable in accordance with the terms of
     this Indenture and of such Securities and any coupons appertaining thereto.

     (b) Such defeasance or covenant defeasance shall not result in a breach or
     violation of, or constitute a default under, this Indenture or any other
     material agreement or instrument to which the Company is a party or by
     which it is bound.

     (c) No Event of Default or event which with notice or lapse of time or both
     would become an Event of Default with respect to such Securities and any
     coupons appertaining thereto shall have occurred and be continuing on the
     date of such deposit or, insofar as Sections 501(6) and 501(7) are
     concerned, at any time during the period ending on the 91st day after the
     date of such deposit (it being understood that this condition shall not be
     deemed satisfied until the expiration of such period).

     (d) In the case of an election under Section 1402, the Company shall have
     delivered to the Trustee an Opinion of Counsel stating that (i) the Company
     has received from, or there has been published by, the Internal Revenue
     Service a ruling, or (ii) since the date of execution of this Indenture,
     there has been a change in the applicable Federal income tax law, in either
     case to the effect that, and based thereon such opinion shall confirm that,
     the Holders of such Outstanding Securities and any coupons appertaining
     thereto will not recognize income, gain or loss for Federal income tax
     purposes as a result of such defeasance and will be subject to Federal
     income tax on the same amounts, in the same manner and at the same times as
     would have been the case if such defeasance had not occurred.

     (e) In the case of an election under Section 1403, the Company shall have
     delivered to the Trustee an Opinion of Counsel to the effect that the
     Holders of such Outstanding Securities and any coupons appertaining thereto
     will not recognize income, gain or loss for 

                                       70

 
     Federal income tax purposes as a result of such covenant defeasance and
     will be subject to Federal income tax on the same amounts, in the same
     manner and at the same times as would have been the case if such covenant
     defeasance had not occurred.

     (f) The Company shall have delivered to the Trustee an Officers'
     Certificate and an Opinion of Counsel, each stating that all conditions
     precedent to the defeasance under Section 1402 or the covenant defeasance
     under Section 1403 (as the case may be) have been complied with and an
     Opinion of Counsel to the effect that either (i) as a result of a deposit
     pursuant to subsection (a) above and the related exercise of the Company's
     option under Section 1402 or Section 1403 (as the case may be),
     registration is not required under the Investment Company Act of 1940, as
     amended, by the Company, with respect to the trust funds representing such
     deposit or by the Trustee for such trust funds or (ii) all necessary
     registrations under said Act have been effected.

     (g) Notwithstanding any other provisions of this Section, such defeasance
     or covenant defeasance shall be effected in compliance with any additional
     or substitute terms, conditions or limitations which may be imposed on the
     Company in connection therewith pursuant to Section 301.

      SECTION 1405.  Deposited Money and Government Obligations to Be Held in
                     --------------------------------------------------------
Trust; Other Miscellaneous Provisions. Subject to the provisions of the last
- -------------------------------------                                       
paragraph of Section 1003, all money and Government Obligations (or other
property as may be provided pursuant to Section 301) (including the proceeds
thereof) deposited with the Trustee (or other qualifying trustee, collectively
for purposes of this Section 1405, the "Trustee") pursuant to Section 1404 in
respect of any Outstanding Securities of any series and any coupons appertaining
thereto shall be held in trust and applied by the Trustee, in accordance with
the provisions of such Securities and any coupons appertaining thereto 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 Holders of such Securities and any coupons appertaining
thereto of all sums due and to become due thereon in respect of principal (and
premium, if any) and interest and Additional Amounts, if any, but such money
need not be segregated from other funds except to the extent required by law.

     Unless otherwise specified with respect to any Security pursuant to Section
301, if, after a deposit referred to in Section 1404(a) has been made, (a) the
Holder of a Security in respect of which such deposit was made is entitled to,
and does, elect pursuant to Section 301 or the terms of such Security to receive
payment in a currency or currency unit other than that in which the deposit
pursuant to Section 1404(a) has been made in respect of such Security, or (b) a
Conversion Event occurs in respect of the currency or currency unit in which the
deposit pursuant to Section 1404(a) has been made, the indebtedness represented
by such Security and any coupons appertaining thereto shall be deemed to have
been, and will be, fully discharged and satisfied through the payment of the
principal of (and premium, if any), and interest, if any, on such Security as
the same becomes due out of the proceeds yielded by converting (from time to
time as specified below in the case of any such election) the amount or other
property deposited in respect of such Security into the currency 

                                       71

 
or currency unit in which such Security becomes payable as a result of such
election or Conversion Event based on the applicable market exchange rate for
such currency or currency unit in effect on the second Business Day prior to
each payment date, except, with respect to a Conversion Event, for such currency
or currency unit in effect (as nearly as feasible) at the time of the Conversion
Event.

     The Company shall pay and indemnify the Trustee against any tax, fee or
other charge imposed on or assessed against the Government Obligations deposited
pursuant to Section 1404 or the principal and interest received in respect
thereof other than any such tax, fee or other charge which by law is for the
account of the Holders of such Outstanding Securities and any coupons
appertaining thereto.

     Anything in this Article to the contrary notwithstanding, subject to
Section 606, the Trustee shall deliver or pay to the Company from time to time
upon Company Request any money or Government Obligations (or other property and
any proceeds therefrom) held by it as provided in Section 1404 which, in the
opinion of a nationally recognized firm of independent public accountants
expressed in a written certification thereof delivered to the Trustee, are in
excess of the amount thereof which would then be required to be deposited to
effect a defeasance or covenant defeasance, as applicable, in accordance with
this Article.

     This Indenture 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 Indenture.

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

                              IMPERIAL CREDIT MORTGAGE HOLDINGS, INC.

                              By:_________________________________________
                              Name:
                              Title:

Attest:

Title:

                              ______________________, as Trustee

                              By:___________________________________________
                              Name:
                              Title:

Attest:

Title:

                                       72

 
STATE OF CALIFORNIA    )
                       )   SS:
COUNTY OF              )

     On the    _____ day of __________, before me personally came
____________________, to me known, who, being by me duly sworn, did depose and
say that he/she resides at __________________________________________________.

     _____________,_____ , that he/she is __________of IMPERIAL CREDIT MORTGAGE
HOLDINGS, INC., one of the parties described in and which executed the foregoing
instrument, and that he/she signed his/her name thereto by authority of the
Board of Trustees.

[Notarial Seal]

                                 Notary Public
                               COMMISSION EXPIRES

STATE OF MARYLAND   )
                    )   SS:
COUNTY OF ________  )

     On the    ______ day of __________, before me personally came
__________________, to me known, who, being by me duly sworn, did depose and say
that he/she resides at __________________________________________________.

     _____________,______,  that he/she is __________ of
_________________________, one of the parties described in and which executed
the foregoing instrument, and that he/she signed his/her name thereto by
authority of the Board of Directors.

[Notarial Seal]

                                 Notary Public
                               COMMISSION EXPIRES

                                       73

 
                                   EXHIBIT A

                             FORMS OF CERTIFICATION

                                  EXHIBIT A-1

         FORM OF CERTIFICATE TO BE GIVEN BY PERSON ENTITLED TO RECEIVE
                     BEARER SECURITY OR TO OBTAIN INTEREST
                      PAYABLE PRIOR TO THE EXCHANGE DATE

                                  CERTIFICATE

     [Insert title or sufficient description of Securities to be delivered]

     This is to certify that, as of the date hereof, and except as set forth
below, the above-captioned Securities held by you for our account (i) are owned
by person(s) that are not citizens or residents of the United States, domestic
partnerships, domestic corporations or any estate or trust the income of which
is subject to United States federal income taxation regardless of its source
("United States person(s)"), (ii) are owned by United States person(s) that are
(a) foreign branches of United States financial institutions (financial
institutions, as defined in United States Treasury Regulations Section 2.165-
12(c)(1)(v) are herein referred to as "financial institutions") purchasing for
their own account or for resale, or (b) United States person(s) who acquired the
Securities through foreign branches of United States financial institutions and
who hold the Securities through such United States financial institutions on the
date hereof (and in either case (a) or (b), each such United States financial
institution hereby agrees, on its own behalf or through its agent, that you may
advise Imperial Credit Mortgage Holdings, Inc. or its agent that such financial
institution will comply with the requirements of Section 165(j)(3)(A), (B) or
(C) of the United States Internal Revenue Code of 1986, as amended, and the
regulations thereunder), or (iii) are owned by United States or foreign
financial institution(s) for purposes of resale during the restricted period (as
defined in United States Treasury Regulations Section 1.163-5(c)(2)(i)(D)(7)),
and, in addition, if the owner is a United States or foreign financial
institution described in clause (iii) above (whether or not also described in
clause (i) or (ii)), this is to further certify that such financial institution
has not acquired the Securities for purposes of resale directly or indirectly to
a United States person or to a person within the United States or its
possessions.

     As used herein, "United States" means the United States of America
(including the States and the District of Columbia); and its "possessions"
include Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, Wake Island
and the Northern Mariana Islands.

                                       74

 
     We undertake to advise you promptly by tested telex on or prior to the date
on which you intend to submit your certification relating to the above-captioned
Securities held by you for our account in accordance with your Operating
Procedures if any applicable statement herein is not correct on such date, and
in the absence of any such notification it may be assumed that this
certification applies as of such date.

     This certificate excepts and does not relate to [U.S.$] __________ of such
interest in the above-captioned Securities in respect of which we are not able
to certify and as to which we understand an exchange for an interest in a
Permanent Global Security or an exchange for and delivery of definitive
Securities (or, if relevant, collection of any interest) cannot be made until we
do so certify.

     We understand that this certificate may be required in connection with
certain tax legislation in the United States. If administrative or legal
proceedings are commenced or threatened in connection with which this
certificate is or would be relevant, we irrevocably authorize you to produce
this certificate or a copy thereof to any interested party in such proceedings.

Dated:    ____________, 19__
[To be dated no earlier than the 15th day prior
to (i) the Exchange Date or (ii) the relevant
Interest Payment Date occurring prior to the
Exchange Date, as applicable]

     [Name of Person Making
     Certification]


     (Authorized Signator) Name: ________________ Title:__________________

                                       75

 
                                  EXHIBIT A-2

        FORM OF CERTIFICATE TO BE GIVEN BY EUROCLEAR AND CEDEL S.A. IN 
                CONNECTION WITH THE EXCHANGE OF A PORTION OF A
                     TEMPORARY GLOBAL SECURITY OR TO OBTAIN
                         INTEREST PAYABLE PRIOR TO THE
                                 EXCHANGE DATE

                                  CERTIFICATE

     [Insert title or sufficient description of Securities to be delivered]

     This is to certify that, based solely on written certifications that we
have received in writing, by tested telex or by electronic transmission from
each of the persons appearing in our records as persons entitled to a portion of
the principal amount set forth below (our "Member Organizations") substantially
in the form attached hereto, as of the date hereof, [U.S.$] _____________
principal amount of the above-captioned Securities (i) is owned by person(s)
that are not citizens or residents of the United States, domestic partnerships,
domestic corporations or any estate or trust the income of which is subject to
United States Federal income taxation regardless of its source ("United States
person(s)"), (ii) is owned by United States person(s) that are (a) foreign
branches of United States financial institutions (financial institutions, as
defined in U.S. Treasury Regulations Section 1.165-12(c)(1)(v) are herein
referred to as "financial institutions") purchasing for their own account or for
resale, or (b) United States person(s) who acquired the Securities through
foreign branches of United States financial institutions and who hold the
Securities through such United States financial institutions on the date hereof
(and in either case (a) or (b), each such financial institution has agreed, on
its own behalf or through its agent, that we may advise Imperial Credit Mortgage
Holdings, Inc. or its agent that such financial institution will comply with the
requirements of Section 165(j)(3)(A), (B) or (C) of the Internal Revenue Code of
1986, as amended, and the regulations thereunder), or (iii) is owned by United
States or foreign financial institution(s) for purposes of resale during the
restricted period (as defined in United States Treasury Regulations Section
1.163-5(c)(2)(i)(D)(7)), and, to the further effect, that financial institutions
described in clause (iii) above (whether or not also described in clause (i) or
(ii)) have certified that they have not acquired the Securities for purposes of
resale directly or indirectly to a United States person or to a person within
the United States or its possessions.

     As used herein, "United States" means the United States of America
(including the States and the District of Columbia); and its "possessions"
include Puerto Rico, the U.S. Virgin Islands, Guam, American Samoa, Wake Island
and the Northern Mariana Islands.

     We further certify that (i) we are not making available herewith for
exchange (or, if relevant, collection of any interest) any portion of the
temporary global Security representing the above-captioned Securities excepted
in the above-referenced certificates of Member Organizations and (ii) as of the
date hereof we have not received any notification from any of our Member
Organizations 

                                       76

 
to the effect that the statements made by such Member Organizations with respect
to any portion of the part submitted herewith for exchange (or, if relevant,
collection of any interest) are no longer true and cannot be relied upon as of
the date hereof.

     We understand that this certification is required in connection with
certain tax legislation in the United States. If administrative or legal
proceedings are commenced or threatened in connection with which this
certificate is or would be relevant, we irrevocably authorize you to produce
this certificate or a copy thereof to any interested party in such proceedings.

Dated:    ____________, 19__
[To be dated no earlier than the Exchange Date
or the relevant Interest Payment Date occurring
prior to the Exchange Date, as applicable]


                                         By:_____________________________

                                       77