Exhibit 4.10


                         ARIZONA PUBLIC SERVICE COMPANY

                                       TO

                            THE CHASE MANHATTAN BANK

                                     Trustee



                                 --------------


                                    Indenture

                          Dated as of January 15, 1998


                                 --------------


                            (For Senior Securities)

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

Trust Indenture
  Act Section                                                  Indenture Section

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


     (b)        .............................................. 1003
ss.318(a)        ............................................. 107

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

                               TABLE OF CONTENTS
                                   ----------

                                                                           PAGE
                                                                           ----

PARTIES                                                                        1
RECITALS OF THE COMPANY                                                        1


                                  ARTICLE ONE

            DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION            1

SECTION 101.  Definitions                                                      1
SECTION 102.  Compliance Certificates and Opinions                             7
SECTION 103.  Form of Documents Delivered to Trustee                           8
SECTION 104.  Acts of Holders; Record Dates                                    9
SECTION 105.  Notices, Etc., to Trustee and Company                           11
SECTION 106.  Notice to Holders; Waiver                                       11
SECTION 107.  Conflict with Trust Indenture Act                               12
SECTION 108.  Effect of Headings and Table of Contents                        12
SECTION 109.  Successors and Assigns                                          12
SECTION 110.  Separability Clause                                             12
SECTION 111.  Benefits of Indenture                                           13
SECTION 112.  Governing Law                                                   13
SECTION 113.  Legal Holidays                                                  13


                                  ARTICLE TWO

                                 SECURITY FORMS                               13

SECTION 201.  Forms Generally                                                 13
SECTION 202.  Form of Face of Security                                        14
SECTION 203.  Form of Reverse of Security                                     16
SECTION 204.  Form of Legend for Global Securities                            20
SECTION 205.  Form of Trustee's Certificate of Authentication                 20

                                 ARTICLE THREE

                                 THE SECURITIES                               21

SECTION 301.  Amount Unlimited; Issuable in Series                            21
SECTION 302.  Denominations                                                   24
SECTION 303.  Execution, Authentication, Delivery and Dating                  24
SECTION 304.  Temporary Securities                                            26
SECTION 305.  Registration, Registration of Transfer and Exchange             27
                                       i

SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities                29
SECTION 307.  Payment of Interest; Interest Rights Preserved                  30
SECTION 308.  Persons Deemed Owners                                           31
SECTION 309.  Cancellation                                                    31
SECTION 310.  Computation of Interest                                         32
SECTION 311.  CUSIP Numbers                                                   32

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE                         33

SECTION 401.  Satisfaction and Discharge of Indenture                         33
SECTION 402.  Application of Trust Money                                      34

                                  ARTICLE FIVE

                                    REMEDIES                                  34

SECTION 501.  Events of Default                                               34
SECTION 502.  Acceleration of Maturity; Rescission and Annulment              36
SECTION 503.  Collection of Indebtedness and Suits for
                  Enforcement by Trustee                                      37
SECTION 504.  Trustee May File Proofs of Claim                                38
SECTION 505.  Trustee May Enforce Claims Without Possession
                  of Securities                                               39
SECTION 506.  Application of Money Collected                                  39
SECTION 507.  Limitation on Suits                                             40
SECTION 508.  Unconditional Right of Holders to Receive Principal,
                  Premium and Interest                                        40
SECTION 509.  Restoration of Rights and Remedies                              41
SECTION 510.  Rights and Remedies Cumulative                                  41
SECTION 511.  Delay or Omission Not Waiver                                    41
SECTION 512.  Control by Holders                                              42
SECTION 513.  Waiver of Past Defaults                                         42
SECTION 514.  Undertaking for Costs                                           43
SECTION 515.  Waiver of Usury, Stay or Extension Laws                         43

                                  ARTICLE SIX

                                  THE TRUSTEE                                 43

SECTION 601.  Certain Duties and Responsibilities                             43
SECTION 602.  Notice of Defaults                                              44
SECTION 603.  Certain Rights of Trustee                                       44
                                       ii

SECTION 604.  Not Responsible for Recitals or Issuance of Securities          45
SECTION 605.  May Hold Securities                                             45
SECTION 606.  Money Held in Trust                                             46
SECTION 607.  Compensation and Reimbursement                                  46
SECTION 608.  Conflicting Interests                                           47
SECTION 609.  Corporate Trustee Required; Eligibility                         47
SECTION 610.  Resignation and Removal; Appointment of Successor               48
SECTION 611.  Acceptance of Appointment by Successor                          49
SECTION 612.  Merger, Conversion, Consolidation or Succession
                  to Business                                                 50
SECTION 613.  Preferential Collection of Claims Against Company               51
SECTION 614.  Appointment of Authenticating Agent                             51

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY              54

SECTION 701.  Company to Furnish Trustee Names and Addresses
                  of Holders                                                  54
SECTION 702.  Preservation of Information; Communications
                  to Holders                                                  54
SECTION 703.  Reports by Trustee                                              55
SECTION 704.  Reports by Company                                              55


                                 ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE            55

SECTION 801.  Company May Consolidate, Etc., Only on
                  Certain Terms                                               55
SECTION 802.  Successor Substituted                                           56


                                  ARTICLE NINE

                            SUPPLEMENTAL INDENTURES                           57

SECTION 901.  Supplemental Indentures Without Consent of Holders              57
SECTION 902.  Supplemental Indentures With Consent of Holders                 58
SECTION 903.  Execution of Supplemental Indentures                            59
SECTION 904.  Effect of Supplemental Indentures                               60
SECTION 905.  Conformity with Trust Indenture Act                             60
SECTION 906.  Reference in Securities to Supplemental Indentures              60
                                      iii

                                  ARTICLE TEN

                                   COVENANTS                                  61

SECTION 1001.  Payment of Principal, Premium and Interest                     61
SECTION 1002.  Maintenance of Office or Agency                                61
SECTION 1003.  Money for Securities Payments to Be Held in Trust              61
SECTION 1004.  Statement by Officers as to Default                            62
SECTION 1005.  Existence                                                      63
SECTION 1006.  Maintenance of Properties                                      63
SECTION 1007.  Payment of Taxes and Other Claims                              63
SECTION 1008.  Waiver of Certain Covenants                                    64
SECTION 1009.  Calculation of Original Issue Discount                         64


                                 ARTICLE ELEVEN

                            REDEMPTION OF SECURITIES                          64

SECTION 1101.  Applicability of Article                                       64
SECTION 1102.  Election to Redeem; Notice to Trustee                          64
SECTION 1103.  Selection by Trustee of Securities to Be Redeemed              65
SECTION 1104.  Notice of Redemption                                           66
SECTION 1105.  Deposit of Redemption Price                                    67
SECTION 1106.  Securities Payable on Redemption Date                          67
SECTION 1107.  Securities Redeemed in Part                                    67


                                 ARTICLE TWELVE

                                 SINKING FUNDS                                68

SECTION 1201.  Applicability of Article                                       68
SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities          68
SECTION 1203.  Redemption of Securities for Sinking Fund                      69

                                ARTICLE THIRTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE                     69

SECTION 1301.  Company's Option to Effect Defeasance or
                  Covenant Defeasance                                         69
SECTION 1302.  Defeasance and Discharge                                       69
SECTION 1303.  Covenant Defeasance                                            70
SECTION 1304.  Conditions to Defeasance or Covenant Defeasance                70
                                       iv

SECTION 1305.  Deposited Money and U.S. Government Obligations
                  to Be Held in Trust; Miscellaneous Provisions               73
SECTION 1306.  Reinstatement                                                  73
                                       v

    INDENTURE,  dated as of January 15, 1998,  between  Arizona  Public  Service
Company,  a corporation  duly organized and existing under the laws of the State
of Arizona  (herein called the  "Company"),  having its principal  office at 400
North Fifth Street, Phoenix,  Arizona 85004, and The Chase Manhattan Bank, a New
York banking corporation, as Trustee (herein called the "Trustee").


                            RECITALS OF THE COMPANY

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

    All  things  necessary  to make  this  Indenture  a valid  agreement  of the
Company, in accordance with its terms, have been done.

    NOW, THEREFORE, THIS INDENTURE WITNESSETH:

    For and in  consideration of the premises and the purchase of the Securities
by the Holders thereof,  it is mutually agreed,  for the equal and proportionate
benefit of all Holders of the Securities or of series thereof, as follows:


                                  ARTICLE 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 Trust Indenture
   Act, either directly or by reference  therein,  have the meanings assigned to
   them therein;

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

   principles,  and, except as otherwise  herein  expressly  provided,  the term
   "generally  accepted  accounting  principles" with respect to any computation
   required or permitted hereunder shall mean such accounting  principles as are
   generally accepted in the United States of America;

        (4) unless the context otherwise requires, any reference to an "Article"
   or a "Section" refers to an Article or a Section, as the case may be, of this
   Indenture; and

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

    "Act",  when used with respect to any Holder,  has the meaning  specified in
Section 104.

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

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

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

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

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

    "Commission" means the Securities and Exchange Commission, from time to time
constituted,  created  under the  Exchange  Act,  or,  if at any time  after the
execution of this  instrument such Commission is not existing and performing the
duties  now  assigned  to it  under  the  Trust  Indenture  Act,  then  the body
performing such duties at such time.
                                       2

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

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

    "Corporate  Trust Office" means the office of the Trustee in the City of New
York,  New York at which at any  particular  time its corporate  trust  business
shall be principally administered, which office at the date hereof is located at
450 West 33rd Street, New York, New York 10001.

    "corporation" means a corporation, association, company, joint-stock company
or business trust.

    "Covenant Defeasance" has the meaning specified in Section 1303.

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

    "Defeasance" has the meaning specified in Section 1302.

    "Depositary"  means,  with respect to Securities  of any series  issuable in
whole or in part in the form of one or more Global Securities, a clearing agency
registered  under the Exchange Act that is designated  to act as Depositary  for
such Securities as contemplated by Section 301.

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

    "Exchange  Act" means the  Securities  Exchange  Act of 1934 and any statute
successor thereto, in each case as amended from time to time.

    "Expiration Date" has the meaning specified in Section 104.

    "Global  Security"  means  a  Security  that  evidences  all or  part of the
Securities  of any series and bears the legend set forth in Section 204 (or such
legend as may be specified as contemplated by Section 301 for such Securities).

    "Holder"  means a Person  in whose  name a  Security  is  registered  in the
Security Register.
                                       3

    "Indenture" means this instrument as originally  executed and 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, including, for
all  purposes  of this  instrument  and any  such  supplemental  indenture,  the
provisions of the Trust Indenture Act that are deemed to be a part of and govern
this  instrument and any such  supplemental  indenture,  respectively.  The term
"Indenture"  shall also  include the terms of  particular  series of  Securities
established as contemplated by Section 301.

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

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

    "Investment  Company Act" means the  Investment  Company Act of 1940 and any
statute successor thereto, in each case as amended from time to time.

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

    "Notice of Default"  means a written notice of the kind specified in Section
501(4).

    "Officers'  Certificate"  means a certificate  signed by the Chairman of the
Board, a Vice Chairman of the Board,  the President or a Vice President,  and by
the Treasurer, an Assistant Treasurer,  the Secretary or an Assistant Secretary,
of the Company,  and  delivered to the Trustee.  One of the officers  signing an
Officers'  Certificate  given  pursuant to Section  1004 shall be the  principal
executive, financial or accounting officer of the Company.

    "Opinion of Counsel" means a written opinion of counsel,  who may be counsel
for the Company, or other counsel who shall be acceptable 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.

    "Outstanding",  when used with respect to Securities,  means, as of the date
of determination,  all Securities theretofore  authenticated and delivered under
this Indenture, except:

        (1) Securities  theretofore cancelled by the Trustee or delivered to the
   Trustee for cancellation;
                                       4

        (2)  Securities  for whose payment or redemption  money in the necessary
   amount has been  theretofore  deposited  with the Trustee or any Paying Agent
   (other than the Company) in trust or set aside and segregated in trust by the
   Company (if the Company shall act as its own Paying Agent) for the Holders of
   such Securities; provided that, if such Securities are to be redeemed, notice
   of such  redemption  has  been  duly  given  pursuant  to this  Indenture  or
   provision therefor satisfactory to the Trustee has been made;

        (3)  Securities as to which  Defeasance  has been  effected  pursuant to
   Section 1302; and

        (4)  Securities  which  have been paid  pursuant  to  Section  306 or in
   exchange for or in lieu of which other Securities have been authenticated and
   delivered  pursuant  to this  Indenture,  other than any such  Securities  in
   respect  of which  there  shall  have been  presented  to the  Trustee  proof
   satisfactory  to it that such Securities are held by a bona fide purchaser in
   whose hands such Securities are valid obligations of the Company;

provided,  however,  that in  determining  whether the Holders of the  requisite
principal  amount of the Outstanding  Securities  have given,  made or taken any
request,  demand,  authorization,  direction,  notice,  consent, waiver or other
action  hereunder as of any date, (A) the principal  amount of an Original Issue
Discount Security which shall be deemed to be Outstanding shall be the amount of
the  principal  thereof  which  would be due and  payable  as of such  date upon
acceleration  of the Maturity  thereof to such date pursuant to Section 502, (B)
if, as of such date, the principal  amount  payable at the Stated  Maturity of a
Security is not determinable,  the principal amount of such Security which shall
be deemed to be  Outstanding  shall be the amount as specified or  determined as
contemplated by Section 301, (C) the principal amount of a Security  denominated
in one or more foreign  currencies or currency units which shall be deemed to be
Outstanding shall be the U.S. dollar  equivalent,  determined as of such date in
the manner provided as  contemplated by Section 301, of the principal  amount of
such  Security  (or,  in the case of a Security  described  in Clause (A) or (B)
above, of the amount determined as provided in such Clause),  and (D) Securities
owned by the Company or any other  obligor upon the  Securities or any Affiliate
of the Company or of such other obligor shall be  disregarded  and deemed not to
be  Outstanding,  except  that,  in  determining  whether the  Trustee  shall be
protected in relying upon any such request,  demand,  authorization,  direction,
notice,  consent,  waiver or other  action,  only  Securities  which the Trustee
actually 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.
                                       5

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

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

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

    "Predecessor  Security"  of any  particular  Security  means every  previous
Security  evidencing all or a portion of the same debt as that evidenced by such
particular  Security;  and,  for the purposes of this  definition,  any Security
authenticated  and  delivered  under Section 306 in exchange for or in lieu of a
mutilated,  destroyed,  lost or stolen  Security shall be deemed to evidence the
same debt as the mutilated, destroyed, lost or stolen Security.

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

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

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

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

    "Securities"  has the meaning  stated in the first recital of this Indenture
and more  particularly  means any Securities  authenticated  and delivered under
this Indenture.

    "Securities Act" means the Securities Act of 1933 and any statute  successor
thereto, in each case as amended from time to time.
                                       6

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

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

    "Stated Maturity",  when used with respect to any Security or any instalment
of  principal  thereof or interest  thereon,  means the date  specified  in such
Security  as the fixed  date on which the  principal  of such  Security  or such
instalment of principal or interest is due and payable.

    "Subsidiary"  means a corporation  more than 50% of the  outstanding  voting
stock of which is owned,  directly  or  indirectly,  by the Company or by one or
more other  Subsidiaries,  or by the Company and one or more other Subsidiaries.
For the purposes of this definition, "voting stock" means stock which ordinarily
has voting power for the election of directors,  whether at all times or only so
long as no  senior  class  of stock  has such  voting  power  by  reason  of any
contingency.

    "Trust  Indenture Act" means the Trust  Indenture Act of 1939 as in force at
the date as of which this instrument was executed;  provided,  however,  that in
the event the Trust  Indenture  Act of 1939 is amended  after such date,  "Trust
Indenture Act" means, to the extent  required by any such  amendment,  the Trust
Indenture Act of 1939 as so amended.

    "Trustee"  means the Person named as the "Trustee" in the first paragraph of
this instrument until a successor Trustee shall have become such pursuant to the
applicable provisions of this Indenture,  and thereafter "Trustee" shall mean or
include each Person who is then a Trustee hereunder, and if at any time there is
more than one such Person,  "Trustee" as used with respect to the  Securities of
any series shall mean the Trustee with respect to Securities of that series.

    "U.S. Government Obligation" has the meaning specified in Section 1304.

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


SECTION 102.  Compliance Certificates and Opinions.

    Upon any  application  or request by the  Company to the Trustee to take any
action under any provision of this  Indenture,  the Company shall furnish to the
Trustee  such  certificates  and  opinions  as may be  required  under the Trust
Indenture Act. Each such certificate or opinion shall be given in the form of an
Officers'  Certificate,  if to be  given by 
                                       7

an officer of the Company,  or an Opinion of Counsel, if to be given by counsel,
and shall comply with the  requirements of the Trust Indenture Act and any other
requirements set forth in this Indenture.

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

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

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

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

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


SECTION 103.  Form of Documents Delivered to Trustee.

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

    Any  certificate  or  opinion of an  officer  of the  Company  may be based,
insofar as it relates to legal  matters,  upon a  certificate  or opinion of, or
representations  by,  counsel,  unless such officer knows, or in the exercise of
reasonable care should know, that the certificate or opinion or  representations
with respect to the matters upon which his  certificate  or opinion is based are
erroneous.  Any such certificate or opinion of counsel may be based,  insofar as
it  relates  to  factual   matters,   upon  a  certificate  or  opinion  of,  or
representations  by, an officer or  officers  of the  Company  stating  that the
information  with respect to such factual  matters is in the  possession  of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know,  that the certificate or opinion or  representations  with respect to such
matters are erroneous.
                                       8

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


SECTION 104.  Acts of Holders; Record Dates.

    Any request, demand,  authorization,  direction,  notice, consent, waiver or
other action provided or permitted by this Indenture to be given,  made or taken
by Holders  may be  embodied  in and  evidenced  by one or more  instruments  of
substantially  similar  tenor  signed by such Holders in person or by agent duly
appointed in writing;  and, except as herein otherwise expressly provided,  such
action shall become  effective when such instrument or instruments are delivered
to the Trustee and, where it is hereby expressly required,  to the Company. Such
instrument  or  instruments  (and the  action  embodied  therein  and  evidenced
thereby) are herein  sometimes  referred to as the "Act" of the Holders  signing
such instrument or instruments.  Proof of execution of any such instrument or of
a writing  appointing any such agent shall be sufficient for any purpose of this
Indenture  and (subject to Section 601)  conclusive  in favor of the Trustee and
the Company, if made in the manner provided in this Section.

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

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

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

    The Company may set any day as a record date for the purpose of  determining
the Holders of Outstanding  Securities of any series  entitled to give,  make or
take any request, demand,  authorization,  direction, notice, consent, waiver or
other action provided or permitted by this Indenture to be given,  made or taken
by Holders of Securities of such 
                                       9

series,  provided  that the  Company  may not set a  record  date  for,  and the
provisions  of this  paragraph  shall not apply with  respect  to, the giving or
making of any notice, declaration,  request or direction referred to in the next
paragraph. If any record date is set pursuant to this paragraph,  the Holders of
Outstanding  Securities of the relevant series on such record date, and no other
Holders, shall be entitled to take or revoke the relevant action, whether or not
such Holders remain Holders after such record date; provided that no such action
shall  be  effective  hereunder  unless  taken  on or  prior  to the  applicable
Expiration  Date by Holders of the  requisite  principal  amount of  Outstanding
Securities of such series on such record date.  Nothing in this paragraph  shall
be  construed  to prevent  the  Company  from  setting a new record date for any
action  for  which a  record  date has  previously  been  set  pursuant  to this
paragraph (whereupon the record date previously set shall automatically and with
no action by any Person be  cancelled  and of no  effect),  and  nothing in this
paragraph  shall be construed to render  ineffective any action taken by Holders
of the  requisite  principal  amount of  Outstanding  Securities of the relevant
series on the date such action is taken.  Promptly  after any record date is set
pursuant to this paragraph,  the Company, at its own expense, shall cause notice
of such  record  date,  the  proposed  action  by  Holders  and  the  applicable
Expiration  Date to be given to the  Trustee  in writing  and to each  Holder of
Securities of the relevant series in the manner set forth in Section 106.

    The Trustee may set any day as a record date for the purpose of  determining
the  Holders of  Outstanding  Securities  of any series  entitled to join in the
giving  or  making  of (i) any  Notice  of  Default,  (ii)  any  declaration  of
acceleration  referred  to in  Section  502,  (iii)  any  request  to  institute
proceedings  referred to in Section 507(2) or (iv) any direction  referred to in
Section 512, in each case with  respect to  Securities  of such  series.  If any
record  date is set  pursuant  to this  paragraph,  the  Holders of  Outstanding
Securities of such series on such record date,  and no other  Holders,  shall be
entitled to join in such notice, declaration,  request or direction or to revoke
the same,  whether or not such Holders  remain  Holders  after such record date;
provided  that no such action  shall be effective  hereunder  unless taken on or
prior to the applicable  Expiration  Date by Holders of the requisite  principal
amount of Outstanding  Securities of such series on such record date. Nothing in
this  paragraph  shall be  construed  to prevent the Trustee  from setting a new
record  date for any  action  for which a record  date has  previously  been set
pursuant  to this  paragraph  (whereupon  the record date  previously  set shall
automatically  and with no action by any Person be cancelled  and of no effect),
and nothing in this  paragraph  shall be  construed  to render  ineffective  any
action  taken by  Holders  of the  requisite  principal  amount  of  Outstanding
Securities  of the  relevant  series on the date such action is taken.  Promptly
after any record date is set pursuant to this  paragraph,  the  Trustee,  at the
Company's  expense,  shall cause notice of such record date, the proposed action
by Holders  and the  applicable  Expiration  Date to be given to the  Company in
writing and to each Holder of  Securities  of the relevant  series in the manner
set forth in Section 106.

    With  respect to any record  date set  pursuant to this  Section,  the party
hereto which sets such record  dates may  designate  any day as the  "Expiration
Date" and from time to time 
                                       10

may change the  Expiration  Date to any earlier or later day;  provided  that no
such change shall be effective unless notice of the proposed new Expiration Date
is given to the other party hereto in writing,  and to each Holder of Securities
of the  relevant  series in the manner set forth in Section  106, on or prior to
the existing  Expiration  Date. If an  Expiration  Date is not  designated  with
respect to any record date set pursuant to this Section,  the party hereto which
set such record date shall be deemed to have initially  designated the 180th day
after such record date as the Expiration Date with respect  thereto,  subject to
its  right  to  change  the  Expiration  Date as  provided  in  this  paragraph.
Notwithstanding the foregoing,  no Expiration Date shall be later than the 180th
day after the applicable record date.

    Without  limiting the  foregoing,  a Holder  entitled  hereunder to take any
action hereunder with regard to any particular Security may do so with regard to
all or any part of the principal  amount of such Security or by one or more duly
appointed  agents  each of which may do so  pursuant  to such  appointment  with
regard to all or any part of such principal amount.


SECTION 105.  Notices, Etc., to Trustee and Company.

    Any request, demand,  authorization,  direction,  notice, consent, waiver or
Act of Holders or other  document  provided or permitted by this Indenture to be
made upon, given or furnished to, or filed with,

        (1) the Trustee by any Holder or by the Company shall be sufficient  for
   every purpose hereunder if made,  given,  furnished or filed in writing to or
   with the Trustee at its Corporate Trust Office, Attention:  Corporate Trustee
   Administration, or

        (2) the Company by the Trustee or by any Holder shall be sufficient  for
   every purpose hereunder  (unless  otherwise herein expressly  provided) if in
   writing and mailed,  first-class postage prepaid, to the Company addressed to
   it at the address of its principal office specified in the first paragraph of
   this  instrument 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 to  Holders of any event,  such
notice shall be sufficiently given (unless otherwise herein expressly  provided)
if in writing and mailed,  first-class  postage prepaid, to each Holder affected
by such event, at his address as it appears in the Security Register,  not later
than the latest date (if any),  and not earlier than the earliest date (if any),
prescribed for the giving of such notice. In any case where notice to Holders 
                                       11

is given by mail, neither the failure to mail such notice, nor any defect in any
notice so mailed,  to any particular Holder shall affect the sufficiency of such
notice with respect to other Holders.  Where this Indenture  provides for notice
in any manner,  such  notice may be waived in writing by the Person  entitled to
receive such notice,  either before or after the event, and such waiver shall be
the equivalent of such notice.  Waivers of notice by Holders shall be filed with
the Trustee,  but such filing shall not be a condition precedent to the validity
of any action taken in reliance upon such waiver.

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


SECTION 107.  Conflict with Trust Indenture Act.

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


SECTION 108.  Effect of Headings and Table of Contents.

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


SECTION 109.  Successors and Assigns.

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


SECTION 110.  Separability Clause.

    In case  any  provision  in this  Indenture  or in the  Securities  shall be
invalid, illegal or unenforceable,  the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.
                                       12

SECTION 111.  Benefits of Indenture.

    Nothing in this Indenture or in the  Securities,  express or implied,  shall
give to any Person, other than the parties hereto and their successors hereunder
and the Holders,  any benefit or any legal or equitable  right,  remedy or claim
under this Indenture.


SECTION 112.  Governing Law.

    This  Indenture  and the  Securities  shall be governed by and  construed in
accordance with the law of the State of New York, without regard to conflicts of
laws principles thereof.


SECTION 113.  Legal Holidays.

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


                                  ARTICLE TWO

                                 SECURITY FORMS


SECTION 201.  Forms Generally.

    The Securities of each series shall be in  substantially  the form set forth
in this Article, or in such other form as shall be established by or pursuant to
a Board  Resolution or in one or more indentures  supplemental  hereto,  in each
case  with  such  appropriate  insertions,  omissions,  substitutions  and other
variations  as are required or permitted  by this  Indenture,  and may have such
letters,   numbers  or  other  marks  of  identification  and  such  legends  or
endorsements  placed  thereon as may be required to comply with the rules of any
securities exchange or Depositary therefor or as may, consistently  herewith, be
determined  by the officers  executing  such  Securities,  as evidenced by their
execution  thereof.  If the form of Securities of any series is  established  by
action taken pursuant to a Board Resolution,  a copy of an appropriate record of
such action shall be certified by the Secretary or an Assistant Secretary of the
Company and  delivered to the Trustee at or prior to the delivery of the 
                                       13

Company Order contemplated by Section 303 for the authentication and delivery of
such Securities.

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


SECTION 202.  Form of Face of Security.

    [Insert any legend required by the Internal Revenue Code and the regulations
thereunder.]

                         ARIZONA PUBLIC SERVICE COMPANY

                    .......................................

No. .........                                                         $ ........
                                                             CUSIP No.
                                                                        --------

    Arizona Public Service  Company,  a corporation  duly organized and existing
under the laws of Arizona (herein called the "Company",  which term includes any
successor  Person  under  the  Indenture  hereinafter  referred  to),  for value
received,          hereby          promises          to          pay          to
 ...............................................,   or  registered  assigns,  the
principal    sum   of    ......................................    Dollars    on
 ........................................................  [if the Security is to
bear  interest  prior to  Maturity,  insert , and to pay  interest  thereon from
 .............  or from the most recent  Interest  Payment Date to which interest
has  been  paid  or  duly  provided  for,  semi-annually  on  ............   and
 ............ in each year, commencing ........., at the rate of ....% per annum,
until the principal hereof is paid or made available for payment [if applicable,
insert , provided  that any principal  and premium,  and any such  instalment of
interest, which is overdue shall bear interest at the rate of ...% per annum (to
the extent that the payment of such interest shall be legally enforceable), from
the  dates  such  amounts  are due  until  they are paid or made  available  for
payment, and such interest shall be payable on demand]. The interest so payable,
and punctually paid or duly provided for, on any Interest  Payment Date will, as
provided in such  Indenture,  be paid to the Person in whose name this  Security
(or one or more  Predecessor  Securities) is registered at the close of business
on the Regular  Record  Date for such  interest,  which shall be the .......  or
 ....... (whether or not a Business Day), as the case may be, next preceding such
Interest Payment Date. Any such interest not so punctually paid or duly provided
for will forthwith cease to be payable to the Holder on such Regular Record Date
and may either be paid to the Person in whose name this Security (or one or more
Predecessor  Securities)  is  registered  at the close of  business on a Special
Record  Date  for the  payment  of such  Defaulted  Interest  to be fixed by the
Trustee,  notice  whereof shall be given to Holders of Securities of this series
not less than 10 days prior to such Special  Record Date, or be paid at any time
in any other lawful manner not
                                       14

inconsistent  with the  requirements  of any  securities  exchange  on which the
Securities of this series may be listed, and upon such notice as may be required
by such exchange, all as more fully provided in said Indenture].

[If the Security is not to bear interest prior to Maturity, insert The principal
of this  Security  shall not bear  interest  except in the case of a default  in
payment of principal upon  acceleration,  upon  redemption or at Stated Maturity
and in such case the  overdue  principal  and any  overdue  premium  shall  bear
interest  at the rate of ....% per annum (to the extent that the payment of such
interest  shall be legally  enforceable),  from the dates such  amounts  are due
until they are paid or made  available  for  payment.  Interest  on any  overdue
principal or premium  shall be payable on demand.  Any such  interest on overdue
principal or premium which is not paid on demand shall bear interest at the rate
of  ......%  per annum (to the  extent  that the  payment  of such  interest  on
interest shall be legally  enforceable),  from the date of such demand until the
amount so  demanded  is paid or made  available  for  payment.  Interest  on any
overdue interest shall be payable on demand.]

    Payment of the principal of (and premium, if any) and [if applicable, insert
any such]  interest on this Security will be made at the office or agency of the
Company maintained for that purpose in ............, in such coin or currency of
the United  States of  America  as at the time of  payment  is legal  tender for
payment of public and private debts [if applicable,  insert ; provided, however,
that at the  option of the  Company  payment  of  interest  may be made by check
mailed to the  address of the Person  entitled  thereto  as such  address  shall
appear in the Security Register].

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

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

    IN WITNESS  WHEREOF,  the  Company  has caused  this  instrument  to be duly
executed under its corporate seal.



                                                  ARIZONA PUBLIC SERVICE COMPANY

                                                  By............................

Attest:

 .........................................
                                       15

SECTION 203.  Form of Reverse of Security.

    This Security is one of a duly authorized issue of securities of the Company
(herein called the "Securities"),  issued and to be issued in one or more series
under an Indenture, dated as of Janaury 15, 1998 (herein called the "Indenture",
which term shall have the meaning  assigned to it in such  instrument),  between
the  Company  and The Chase  Manhattan  Bank,  as  Trustee  (herein  called  the
"Trustee",  which term includes any successor trustee under the Indenture),  and
reference  is hereby made to the  Indenture  for a statement  of the  respective
rights,  limitations of rights, duties and immunities thereunder of the Company,
the Trustee and the  Holders of the  Securities  and of the terms upon which the
Securities are, and are to be, authenticated and delivered. This Security is one
of the series designated on the face hereof [if  applicable,insert  , limited in
- --- aggregate principal amount to $...........].


    [If  applicable,insert___  The  Securities  of this  series  are  subject to
redemption upon not less than 30 days' notice by mail, [if applicable,  insert__
(1) on ...........  in any year commencing with the year ......  and ending with
the year  ......  through  operation  of the  sinking  fund for this series at a
Redemption Price equal to 100% of the principal amount, and (2)] at any time [if
applicable,  insert on or after .........., 19..], as a whole or in part, at the
election of  the Company,  at  the  following  Redemption  Prices  (expressed as
percentages of the principal amount): If redeemed [if applicable, insert__on or
before  ...............,  ...%,  and if  redeemed]  during the  12-month  period
beginning ............. of the years indicated,



               Redemption                              Redemption
Year              Price                Year              Price
- - ----           ----------              ----            ----------








and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such  redemption  [if  applicable, insert___(whether
through  operation of the sinking fund or otherwise)]  with accrued  interest to
the Redemption  Date, but interest  installments  whose Stated Maturity is on or
prior to such Redemption Date will be payable to the Holders of such Securities,
or one or more Predecessor Securities, of record at the close of business on the
relevant  Record Dates  referred to on the face  hereof,  all as provided in the
Indenture.]

    [If  applicable, insert__ The  Securities  of this  series  are  subject  to
redemption  upon not less than 30 days' notice by mail, (1) on  ............  in
any year  commencing  with the year ....  and ending with the year ....  through
operation  of the  sinking  fund for this  series at the  Redemption  Prices for
redemption  through  operation of the sinking fund  (expressed as percentages of
the  principal  amount)  set forth in the table  below,  and (2) at any time [if
                                       16

applicable, insert__ on or after  ............],  as a whole or in part,  at the
election of the Company, at the Redemption Prices for redemption  otherwise than
through operation of the sinking fund (expressed as percentages of the principal
amount) set forth in the table below:  If redeemed  during the  12-month  period
beginning ............ of the years indicated,

                  Redemption Price                    
                   For Redemption                    Redemption Price For 
                  Through Operation                  Redemption Otherwise
                       of the                       Than Through Operation
Year                 Sinking Fund                     of the Sinking Fund
- ----              -----------------                 ----------------------






and  thereafter at a Redemption  Price equal to .....% of the principal  amount,
together in the case of any such redemption  (whether  through  operation of the
sinking fund or otherwise)  with accrued  interest to the  Redemption  Date, but
interest  installments  whose Stated  Maturity is on or prior to such Redemption
Date  will  be  payable  to the  Holders  of  such  Securities,  or one or  more
Predecessor  Securities,  of  record at the close of  business  on the  relevant
Record Dates referred to on the face hereof, all as provided in the Indenture.]

    [If applicable, insert__ Notwithstanding the foregoing, the Company may not,
prior to .............,  redeem any Securities of this series as contemplated by
[if applicable, insert__ Clause (2) of] the preceding paragraph as a part of, or
in  anticipation  of, any refunding  operation by the  application,  directly or
indirectly,   of  moneys  borrowed  having  an  interest  cost  to  the  Company
(calculated in accordance with generally  accepted  financial  practice) of less
than .....% per annum.]

    [If  applicable,  insert__ The sinking fund for this series provides for the
redemption on  ............  in each year  beginning  with the year .......  and
ending  with  the  year  ......  of  [if  applicable,  insert__  not  less  than
$..........  ("mandatory sinking fund") and not more than] $.........  aggregate
principal  amount  of  Securities  of this  series.  Securities  of this  series
acquired  or  redeemed by the Company  otherwise  than  through [if  applicable,
insert__ mandatory] sinking fund payments may be credited against subsequent [if
applicable,insert__  mandatory]  sinking fund payments  otherwise required to be
made [if applicable, insert__ , in the inverse order in which they become due].]

    [If the Security is subject to redemption of any kind, insert__ In the event
of  redemption  of this  Security in part only, a new Security or  Securities of
this series and of like 
                                       17

tenor for the unredeemed portion hereof will be issued in the name of the Holder
hereof upon the cancellation hereof.]


    [If applicable, insert__ The Indenture contains provisions for defeasance at
any time of [the entire indebtedness of this Security] [or] [certain restrictive
covenants and Events of Default with respect to this  Security] [, in each case]
upon compliance with certain conditions set forth in the Indenture.]

    [If the Security is not an Original Issue Discount Security,  insert__ If an
Event of Default  with respect to  Securities  of this series shall occur and be
continuing,  the principal of the  Securities of this series may be declared due
and payable in the manner and with the effect provided in the Indenture.]

    [If the  Security is an Original  Issue  Discount  Security,  insert__ If an
Event of Default  with respect to  Securities  of this series shall occur and be
continuing,  an amount of  principal  of the  Securities  of this  series may be
declared  due and  payable in the manner  and with the  effect  provided  in the
Indenture.  Such amount shall be equal to insert__  formula for  determining the
amount.  Upon payment (i) of the amount of principal so declared due and payable
and (ii) of interest on any overdue  principal,  premium and  interest  (in each
case  to the  extent  that  the  payment  of  such  interest  shall  be  legally
enforceable),  all of the Company's obligations in respect of the payment of the
principal of and premium and interest,  if any, on the Securities of this series
shall terminate.]

    The Indenture  permits,  with certain  exceptions as therein  provided,  the
amendment  thereof and the  modification  of the rights and  obligations  of the
Company  and the rights of the  Holders of the  Securities  of each series to be
affected under the Indenture at any time by the Company and the Trustee with the
consent of the Holders of 66 2/3% in principal  amount of the  Securities at the
time  Outstanding  of each series to be affected.  The  Indenture  also contains
provisions  permitting the Holders of specified  percentages in principal amount
of the  Securities  of each  series  at the time  Outstanding,  on behalf of the
Holders of all  Securities  of such series,  to waive  compliance by the Company
with certain  provisions of the  Indenture  and certain past defaults  under the
Indenture  and their  consequences.  Any such consent or waiver by the Holder of
this  Security  shall be  conclusive  and binding  upon such Holder and upon all
future Holders of this Security and of any Security issued upon the registration
of transfer  hereof or in exchange  therefor or in lieu  hereof,  whether or not
notation of such consent or waiver is made upon this Security.

    As provided in and subject to the provisions of the Indenture, the Holder of
this Security shall not have the right to institute any proceeding  with respect
to the  Indenture  or for the  appointment  of a receiver  or trustee or for any
other  remedy  thereunder,  unless such 
                                       18

Holder shall have  previously  given the Trustee  written notice of a continuing
Event of Default with respect to the  Securities of this series,  the Holders of
not less than 25% in principal  amount of the  Securities  of this series at the
time  Outstanding  shall have made  written  request to the Trustee to institute
proceedings  in respect of such Event of  Default  as Trustee  and  offered  the
Trustee reasonable  indemnity,  and the Trustee shall not have received from the
Holders of a majority in principal  amount of  Securities  of this series at the
time  Outstanding a direction  inconsistent  with such  request,  and shall have
failed to  institute  any such  proceeding,  for 60 days  after  receipt of such
notice,  request and offer of indemnity.  The  foregoing  shall not apply to any
suit  instituted  by the  Holder of this  Security  for the  enforcement  of any
payment of  principal  hereof or any premium or interest  hereon on or after the
respective due dates expressed herein.

    No reference herein to the Indenture and no provision of this Security or of
the  Indenture  shall alter or impair the  obligation  of the Company,  which is
absolute and unconditional, to pay the principal of and any premium and interest
on this  Security  at the times,  place and rate,  and in the coin or  currency,
herein prescribed.

    As provided in the Indenture and subject to certain  limitations therein set
forth,  the transfer of this Security is registrable  in the Security  Register,
upon  surrender of this Security for  registration  of transfer at the office or
agency of the  Company in any place where the  principal  of and any premium and
interest on this  Security are payable,  duly endorsed by, or  accompanied  by a
written  instrument  of  transfer  in form  satisfactory  to the Company and the
Security  Registrar  duly  executed by, the Holder  hereof or his attorney  duly
authorized in writing,  and thereupon one or more new  Securities of this series
and of like  tenor,  of  authorized  denominations  and for the  same  aggregate
principal amount, will be issued to the designated transferee or transferees.

    The  Securities of this series are issuable only in registered  form without
coupons in  denominations  of $.......  and any integral  multiple  thereof.  As
provided in the Indenture and subject to certain  limitations therein set forth,
Securities of this series are exchangeable for a like aggregate principal amount
of  Securities  of this  series  and of like  tenor  of a  different  authorized
denomination, as requested by the Holder surrendering the same.

    No service  charge  shall be made for any such  registration  of transfer or
exchange,  but the Company may require  payment of a sum sufficient to cover any
tax or other governmental charge payable in connection therewith.

    Prior to due presentment of this Security for registration of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose name this  Security is  registered  as the owner  hereof for all
purposes,  whether or not this 
                                       19

Security be overdue,  and  neither the  Company,  the Trustee nor any such agent
shall be affected by notice to the contrary.

    All terms used in this  Security  which are defined in the  Indenture  shall
have the meanings assigned to them in the Indenture.


SECTION 204.  Form of Legend for Global Securities.

    Unless otherwise specified as contemplated by Section 301 for the Securities
evidenced thereby,  every Global Security  authenticated and delivered hereunder
shall bear a legend in substantially the following form:

THIS  SECURITY  IS A  GLOBAL  SECURITY  WITHIN  THE  MEANING  OF  THE  INDENTURE
HEREINAFTER  REFERRED  TO AND IS  REGISTERED  IN THE NAME OF A  DEPOSITARY  OR A
NOMINEE  THEREOF.  THIS  SECURITY MAY NOT BE EXCHANGED IN WHOLE OR IN PART FOR A
SECURITY REGISTERED, AND NO TRANSFER OF THIS SECURITY IN WHOLE OR IN PART MAY BE
REGISTERED,  IN THE NAME OF ANY PERSON OTHER THAN SUCH  DEPOSITARY  OR A NOMINEE
THEREOF, EXCEPT IN THE LIMITED CIRCUMSTANCES DESCRIBED IN THE INDENTURE.


SECTION 205.  Form of Trustee's Certificate of Authentication.

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

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


                                           THE CHASE MANHATTAN BANK,
                                                          As Trustee


                                           By...................................
                                              Authorized Officer
                                       20

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

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

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

    (3) the Person to whom any  interest  on a Security  of the series  shall be
  payable,  if other than the Person in whose name that Security (or one or more
  Predecessor  Securities) is registered at the close of business on the Regular
  Record Date for such interest;

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

    (5) the rate or rates at which  any  Securities  of the  series  shall  bear
  interest, if any, the date or dates from which any such interest shall accrue,
  the Interest  Payment Dates on which any such interest  shall be payable,  the
  manner  (if any) of  determination  of such  Interest  Payment  Dates  and the
  Regular  Record Date for any such  interest  payable on any  Interest  Payment
  Date;
                                       21

    (6) the  right,  if any,  to extend the  interest  payment  periods  and the
  duration of such extension;

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

    (8) the period or periods within which, the price or prices at which and the
  terms and conditions  upon which any Securities of the series may be redeemed,
  in whole or in part,  at the  option of the  Company  and,  if other than by a
  Board  Resolution,  the manner in which any  election by the Company to redeem
  the Securities shall be evidenced;

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

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

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

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

    (13) if the principal of or any premium or interest on any Securities of the
  series is to be payable, at the election of the Company or the Holder thereof,
  in one or more  currencies or currency units other than that or those in which
  such Securities are stated to be payable, the currency, currencies or currency
  units in which the principal of or any premium or interest on such  
                                       22

  Securities  as to which such  election is made shall be  payable,  the periods
  within which and the terms and  conditions  upon which such  election is to be
  made and the amount so payable  (or the manner in which such  amount  shall be
  determined);

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

    (15)  if  the  principal  amount  payable  at  the  Stated  Maturity  of any
  Securities of the series will not be  determinable as of any one or more dates
  prior to the  Stated  Maturity,  the  amount  which  shall be deemed to be the
  principal  amount  of such  Securities  as of any such  date  for any  purpose
  thereunder or hereunder, including the principal amount thereof which shall be
  due and  payable  upon any  Maturity  other than the Stated  Maturity or which
  shall be deemed to be Outstanding as of any date prior to the Stated  Maturity
  (or,  in any such  case,  the  manner in which  such  amount  deemed to be the
  principal amount shall be determined);

    (16) if  applicable,  that the  Securities  of the  series,  in whole or any
  specified part,  shall be defeasible  pursuant to Section 1302 or Section 1303
  or both such Sections and, if other than by a Board Resolution,  the manner in
  which  any  election  by the  Company  to  defease  such  Securities  shall be
  evidenced;

    (17) if  applicable,  that any Securities of the series shall be issuable in
  whole or in part in the form of one or more  Global  Securities  and,  in such
  case, the respective Depositaries for such Global Securities,  the form of any
  legend or legends which shall be borne by any such Global Security in addition
  to or in lieu of that  set  forth  in  Section  204 and any  circumstances  in
  addition to or in lieu of those set forth in Clause (2) of the last  paragraph
  of Section 305 in which any such Global  Security may be exchanged in whole or
  in part for Securities registered, and any transfer of such Global Security in
  whole or in part may be registered, in the name or names of Persons other than
  the Depositary for such Global Security or a nominee thereof;

    (18) any addition to or change in the Events of Default which applies to any
  Securities  of the series  and any  change in the right of the  
                                       23

  Trustee or the requisite  Holders of such  Securities to declare the principal
  amount thereof due and payable pursuant to Section 502;

    (19) any  addition  to or change in the  covenants  set forth in Article Ten
  which applies to Securities of the series; and

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

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

        If any of the  terms of the  series  are  established  by  action  taken
pursuant to a Board Resolution,  a copy of an appropriate  record of such action
shall be certified by the Secretary or 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 series.


SECTION 302.  Denominations.

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


SECTION 303.  Execution, Authentication, Delivery and Dating.

    The Securities shall be executed on behalf of the Company by its Chairman of
the Board,  its Vice  Chairman of the Board,  its  President  or one of its Vice
Presidents,  under  its  corporate  seal  reproduced  thereon  attested  by  its
Secretary or one of its  Assistant  Secretaries.  The  signature of any of these
officers on the Securities may be manual or facsimile.
                                       24

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

    At any time and from time to time after the  execution  and delivery of this
Indenture,  the  Company may deliver  Securities  of any series  executed by the
Company to the Trustee for authentication, together with a Company Order for the
authentication  and delivery of such  Securities,  and the Trustee in accordance
with the Company Order shall  authenticate and deliver such  Securities.  If the
form or terms of the  Securities  of the  series  have  been  established  by or
pursuant to one or more Board  Resolutions as permitted by Sections 201 and 301,
in authenticating such Securities, and accepting the additional responsibilities
under this  Indenture  in relation  to such  Securities,  the  Trustee  shall be
entitled to receive,  and (subject to Section  601) shall be fully  protected in
relying upon, an Opinion of Counsel stating,

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

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

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

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

    Notwithstanding   the  provisions  of  Section  301  and  of  the  preceding
paragraph,  if all Securities of a series are not to be originally issued at one
time, it shall not be necessary to deliver the Officers'  Certificate  otherwise
required  pursuant to Section  301 or the  Company  
                                       25

Order and  Opinion of Counsel  otherwise  required  pursuant  to such  preceding
paragraph at or prior to the  authentication  of each Security of such series if
such  documents  are delivered at or prior to the  authentication  upon original
issuance of the first Security of such series to be issued.

    Each Security shall be dated the date of its authentication.

    No Security  shall be entitled to any  benefit  under this  Indenture  or be
valid or  obligatory  for any purpose  unless there  appears on such  Security a
certificate  of  authentication  substantially  in the form  provided for herein
executed by the Trustee by manual signature of an authorized  officer,  and such
certificate  upon  any  Security  shall  be  conclusive  evidence,  and the only
evidence,   that  such  Security  has  been  duly  authenticated  and  delivered
hereunder.  Notwithstanding  the  foregoing,  if any  Security  shall  have been
authenticated and delivered  hereunder but never issued and sold by the Company,
and the Company shall deliver such Security to the Trustee for  cancellation  as
provided in Section 309, for all purposes of this  Indenture such Security shall
be deemed never to have been  authenticated  and  delivered  hereunder and shall
never be entitled to the benefits of this Indenture.


SECTION 304.  Temporary Securities.

    Pending the preparation of definitive  Securities of any series, the Company
may execute,  and upon Company Order the Trustee shall authenticate and deliver,
temporary Securities which are printed, lithographed,  typewritten, mimeographed
or otherwise  produced,  in any authorized  denomination,  substantially  of the
tenor of the  definitive  Securities  in lieu of which  they are issued and with
such appropriate  insertions,  omissions,  substitutions and other variations as
the officers  executing such  Securities  may  determine,  as evidenced by their
execution of such Securities.

    If  temporary  Securities  of any series are issued,  the Company will cause
definitive  Securities of that series to be prepared without unreasonable delay.
After the  preparation  of definitive  Securities of such series,  the temporary
Securities of such series shall be  exchangeable  for  definitive  Securities of
such series upon  surrender of the  temporary  Securities  of such series at the
office or agency of the Company in a Place of Payment for that  series,  without
charge  to the  Holder.  Upon  surrender  for  cancellation  of any  one or more
temporary  Securities  of any series,  the Company shall execute and the Trustee
shall  authenticate  and deliver in  exchange  therefor  one or more  definitive
Securities of the same series, of any authorized denominations and of like tenor
and aggregate principal amount. 
                                       26

Until so exchanged, the temporary Securities of any series shall in all respects
be entitled to the same benefits under this  Indenture as definitive  Securities
of such series and tenor.


SECTION 305.  Registration, Registration of Transfer and Exchange.

    The Company  shall  cause to be kept at the  Corporate  Trust  Office of the
Trustee a  register  (the  register  maintained  in such  office or in any other
office or agency of the  Company in a Place of Payment  being  herein  sometimes
referred to as the  "Security  Register") in which,  subject to such  reasonable
regulations as it may prescribe,  the Company shall provide for the registration
of Securities  and of transfers of Securities.  The Trustee is hereby  appointed
"Security Registrar" for the purpose of registering  Securities and transfers of
Securities as herein provided.

    Upon surrender for  registration  of transfer of any Security of a series at
the 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 Securities of
the same series, of any authorized denominations and of like tenor and aggregate
principal amount.

    At the option of the Holder,  Securities  of any series may be exchanged for
other Securities of the same series, of any authorized denominations and of like
tenor and aggregate  principal  amount,  upon  surrender of the Securities to be
exchanged at such office or agency.  Whenever any  Securities are so surrendered
for exchange,  the Company shall execute, and the Trustee shall authenticate and
deliver,  the  Securities  which the Holder  making the  exchange is entitled to
receive.

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

    Every Security  presented or surrendered for registration of transfer or for
exchange  shall (if so required by the Company or the Trustee) be duly endorsed,
or be accompanied by a written  instrument of transfer in form  satisfactory  to
the Company and the Security  Registrar duly executed,  by the Holder thereof or
his attorney duly authorized in writing.

    No service charge shall be made for any registration of transfer or exchange
of Securities,  but the Company may require payment of a sum sufficient to cover
any tax or 
                                       27

other   governmental   charge  that  may  be  imposed  in  connection  with  any
registration  of  transfer  or  exchange  of  Securities,  other than  exchanges
pursuant to Section 304, 906 or 1107 not involving any transfer.

    If the  Securities of any series (or of any series and specified  tenor) are
to be redeemed,  the Company  shall not be required  (A) to issue,  register the
transfer of or  exchange  any  Securities  of that series (or of that series and
specified tenor, as the case may be) during a period beginning at the opening of
business 15 days before the day of the mailing of a notice of  redemption of any
such  Securities  selected for redemption and ending at the close of business on
the day of such  mailing,  or (B) to register  the  transfer of or exchange  any
Security so selected for  redemption in whole or in part,  except the unredeemed
portion of any Security being redeemed in part.

    The  provisions  of Clauses (1),  (2), (3) and (4) below shall apply only to
Global Securities:

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

    (2)  Notwithstanding  any  other  provision  in this  Indenture,  no  Global
  Security may be exchanged in whole or in part for Securities  registered,  and
  no transfer of a Global Security in whole or in part may be registered, in the
  name of any Person  other than the  Depositary  for such Global  Security or a
  nominee  thereof unless (A) such  Depositary (i) has notified the Company that
  it is unwilling or unable to continue as Depositary  for such Global  Security
  or (ii) has ceased to be a clearing agency  registered under the Exchange Act,
  (B) there  shall have  occurred  and be  continuing  an Event of Default  with
  respect to such Global  Security or (C) there shall exist such  circumstances,
  if any, in addition to or in lieu of the foregoing as have been  specified for
  this purpose as contemplated by Section 301.

    (3) Subject to Clause (2) above, any exchange of a Global Security for other
  Securities  may be made in whole  or in part,  and all  Securities  issued  in
  exchange for a Global  Security or any portion  thereof shall be registered in
  such names as the Depositary for such Global Security shall direct.
                                       28

    (4) Every Security authenticated and delivered upon registration of transfer
  of,  or in  exchange  for or in lieu  of,  a Global  Security  or any  portion
  thereof,  whether  pursuant to this Section,  Section 304, 306, 906 or 1107 or
  otherwise,  shall be authenticated and delivered in the form of, and shall be,
  a Global Security,  unless such Security is registered in the name of a Person
  other than the Depositary for such Global Security or a nominee thereof.


SECTION 306.  Mutilated, Destroyed, Lost and Stolen Securities.

    If any mutilated  Security is surrendered to the Trustee,  the Company shall
execute and the Trustee shall  authenticate  and deliver in exchange  therefor a
new  Security  of the same  series  and of like tenor and  principal  amount and
bearing a number not contemporaneously outstanding.

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

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

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

    Every new Security of any series issued  pursuant to this Section in lieu of
any destroyed,  lost or stolen Security shall constitute an original  additional
contractual  obligation of the Company,  whether or not the  destroyed,  lost or
stolen  Security  shall be at any  time  enforceable  by  anyone,  and  shall be
entitled to all the benefits of this Indenture equally and proportionately  with
any and all other Securities of that series duly issued hereunder.
                                       29

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


SECTION 307.  Payment of Interest; Interest Rights Preserved.

    Except as otherwise  provided as contemplated by Section 301 with respect to
any series of  Securities,  interest on any  Security  which is payable,  and is
punctually paid or duly provided for, on any Interest Payment Date shall be paid
to  the  Person  in  whose  name  that  Security  (or  one or  more  Predecessor
Securities)  is registered  at the close of business on the Regular  Record Date
for such interest.  

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

    (1) The Company may elect to make payment of any  Defaulted  Interest to the
  Persons in whose  names the  Securities  of such  series (or their  respective
  Predecessor  Securities)  are registered at the close of business on a Special
  Record Date for the payment of such Defaulted  Interest,  which shall be fixed
  in the  following  manner.  The Company shall notify the Trustee in writing of
  the amount of Defaulted  Interest proposed to be paid on each Security of such
  series and the date of the proposed payment,  and at the same time the Company
  shall  deposit  with the  Trustee  an amount of money  equal to the  aggregate
  amount proposed to be paid in respect of such Defaulted Interest or shall make
  arrangements satisfactory to the Trustee for such deposit prior to the date of
  the proposed  payment,  such money when  deposited to be held in trust for the
  benefit of the Persons  entitled to such Defaulted  Interest as in this Clause
  provided.  Thereupon  the  Trustee  shall  fix a Special  Record  Date for the
  payment of such  Defaulted  Interest  which shall be not more than 15 days and
  not less than 10 days prior to the date of the  proposed  payment and not less
  than 10 days after the  receipt by the  Trustee of the notice of the  proposed
  payment.  The Trustee shall promptly notify the Company of such Special Record
  Date and, in the name and at the expense of the Company, shall cause notice of
  the proposed  payment of such  Defaulted  Interest and the Special Record Date
  therefor to be given to each Holder of Securities of such series in the manner
  set forth in Section 106,  not less than 10 days prior to such Special  Record
  Date.  Notice of the  proposed  
                                       30

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

    (2) The Company may make payment of any Defaulted Interest on the Securities
  of  any  series  in  any  other  lawful  manner  not  inconsistent   with  the
  requirements  of any  securities  exchange  on which  such  Securities  may be
  listed,  and upon such notice as may be required by such  exchange,  if, after
  notice given by the Company to the Trustee of the proposed payment pursuant to
  this  Clause,  such  manner  of  payment  shall be deemed  practicable  by the
  Trustee.

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


SECTION 308.  Persons Deemed Owners.

      Prior to due presentment of a Security for  registration of transfer,  the
Company,  the  Trustee and any agent of the Company or the Trustee may treat the
Person in whose name such  Security is  registered as the owner of such Security
for the  purpose  of  receiving  payment of  principal  of and any  premium  and
(subject  to  Section  307) any  interest  on such  Security  and for all  other
purposes  whatsoever,  whether or not such Security be overdue,  and neither the
Company,  the  Trustee  nor any agent of the  Company  or the  Trustee  shall be
affected by notice to the contrary.


SECTION 309.  Cancellation.

    All Securities surrendered for payment, redemption, registration of transfer
or exchange or for credit against any sinking fund payment shall, if surrendered
to any Person other than the  Trustee,  be delivered to the Trustee and shall be
promptly cancelled 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 
                                       31

Company  has not issued  and sold,  and all  Securities  so  delivered  shall be
promptly cancelled by the Trustee.  No Securities shall be authenticated in lieu
of or in exchange  for any  Securities  cancelled  as provided in this  Section,
except as expressly permitted by this Indenture.  All cancelled  Securities held
by the Trustee  shall be disposed of as directed by a Company  Order;  provided,
however,  that the  Trustee  shall not be  required  to destroy  such  cancelled
Securities.


SECTION 310.  Computation of Interest.

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


SECTION 311.  CUSIP Numbers.

    The  Company in issuing  the  Securities  may use  "CUSIP"  numbers (if then
generally in use),  and, if so, the Trustee shall use "CUSIP" numbers in notices
of  redemption as a  convenience  to Holders;  provided that any such notice may
state  that no  representation  is made as to the  correctness  of such  numbers
either  as  printed  on  the  Securities  or as  contained  in any  notice  of a
redemption  and that  reliance  may be placed  only on the other  identification
numbers printed on the Securities, and any such redemption shall not be affected
by any defect in or omission of such numbers.
                                       32

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE


SECTION 401.  Satisfaction and Discharge of Indenture.

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

    (1) either

      (A) all Securities theretofore authenticated and delivered (other than (i)
    Securities  which  have been  destroyed,  lost or stolen and which have been
    replaced or paid as provided  in Section 306 and (ii)  Securities  for whose
    payment money has theretofore been deposited in trust or segregated and held
    in trust by the Company and  thereafter  repaid to the Company or discharged
    from such trust,  as provided in Section  1003) have been  delivered  to the
    Trustee for cancellation; or

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

        (i)  have become due and payable, or

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

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

      and the Company, in the case of (i), (ii) or (iii) above, has deposited or
      caused to be  deposited  with the  Trustee as trust funds in trust for the
      purpose  money in an amount  sufficient  to pay and  discharge  the entire
      indebtedness on such  Securities not theretofore  
                                       33

      delivered to the Trustee for  cancellation,  for principal and any premium
      and interest to the date of such deposit (in the case of Securities  which
      have become due and payable) or to the Stated Maturity or Redemption Date,
      as the case may be;

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

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

    Notwithstanding  the  satisfaction  and  discharge  of this  Indenture,  the
obligations of the Company to the Trustee under Section 607, the  obligations of
the Company to any  Authenticating  Agent under  Section 614 and, if money shall
have been deposited with the Trustee  pursuant to subclause (B) of Clause (1) of
this  Section,  the  obligations  of the Trustee  under Section 402 and the last
paragraph of Section 1003 shall survive.


SECTION 402.  Application of Trust Money.

    Subject to 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  and this
Indenture,  to  the  payment,  either  directly  or  through  any  Paying  Agent
(including  the  Company  acting as its own  Paying  Agent) as the  Trustee  may
determine, to the Persons entitled thereto, of the principal and any premium and
interest for whose payment such money has been deposited with the Trustee.


                                  ARTICLE FIVE

                                    REMEDIES


SECTION 501.  Events of Default.

    "Event of Default",  wherever  used herein with respect to Securities of any
series,  means any one of the  following  events  (whatever  the reason for such
Event of Default and whether it shall be voluntary or involuntary or be effected
by operation of law or pursuant 
                                       34

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

    (1) default in the payment of any interest  upon any Security of that series
  when it 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 any  premium  on any
  Security of that series at its Maturity; or

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

    (4) default in the  performance,  or breach,  of any covenant or warranty of
  the Company in this Indenture  (other than a covenant or warranty a default in
  whose  performance  or whose breach is elsewhere in this Section  specifically
  dealt with or which has expressly been included in this  Indenture  solely for
  the benefit of series of Securities  other than that series),  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 entry by a court having jurisdiction in the premises of (A) a decree
  or order for  relief in  respect  of the  Company  in an  involuntary  case or
  proceeding  under any  applicable  Federal  or State  bankruptcy,  insolvency,
  reorganization  or other  similar law or (B) a decree or order  adjudging  the
  Company a bankrupt or  insolvent,  or approving  as properly  filed a petition
  seeking  reorganization,  arrangement,  adjustment  or  composition  of  or in
  respect  of the  Company  under  any  applicable  Federal  or  State  law,  or
  appointing a custodian, receiver, liquidator,  assignee, trustee, sequestrator
  or other  similar  official of the Company or of any  substantial  part of its
  property,  or ordering the winding up or liquidation  of its affairs,  and the
  continuance of any such decree or order for relief or any such other decree or
  order unstayed and in effect for a period of 90 consecutive days; or

    (6) the  commencement by the Company of a voluntary case or proceeding under
  any applicable  Federal or State  bankruptcy,  insolvency,  
                                       35

  reorganization  or other  similar law or of any other case or proceeding to be
  adjudicated  a bankrupt or  insolvent,  or the consent by it to the entry of a
  decree or order for relief in respect of the Company in an involuntary case or
  proceeding  under any  applicable  Federal  or State  bankruptcy,  insolvency,
  reorganization  or other similar law or to the  commencement of any bankruptcy
  or insolvency case or proceeding against it, or the filing by it of a petition
  or answer or consent  seeking  reorganization  or relief under any  applicable
  Federal or State law, or the  consent by it to the filing of such  petition or
  to  the  appointment  of  or  taking  possession  by  a  custodian,  receiver,
  liquidator,  assignee, trustee,  sequestrator or other similar official of the
  Company or of any substantial part of its property,  or the making by it of an
  assignment for the benefit of creditors,  or the admission by it in writing of
  its inability to pay its debts  generally as they become due, or the taking of
  corporate action by the Company in furtherance of any such action; or

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


SECTION 502.  Acceleration of Maturity; Rescission and Annulment.

    If an Event of Default (other than an Event of Default  specified in Section
501(5)  or  501(6))  with  respect  to  Securities  of any  series  at the  time
Outstanding occurs and is continuing, then in every such case the Trustee or the
Holders of not less than 25% in principal  amount of the Outstanding  Securities
of that series may declare the  principal  amount of all the  Securities of that
series  (or,  if any  Securities  of that  series are  Original  Issue  Discount
Securities,  such portion of the principal  amount of such  Securities as may be
specified by the terms thereof) to be due and payable  immediately,  by a notice
in writing to the Company (and to the Trustee if given by Holders), and upon any
such  declaration  such  principal  amount (or  specified  amount)  shall become
immediately due and payable.  If an Event of Default specified in Section 501(5)
or 501(6)  with  respect to  Securities  of any  series at the time  Outstanding
occurs,  the principal  amount of all the  Securities of that series (or, if any
Securities of that series are Original Issue Discount  Securities,  such portion
of the  principal  amount of such  Securities  as may be  specified by the terms
thereof) shall automatically, and without any declaration or other action on the
part of the Trustee or any Holder, 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  
                                       36

in principal  amount of the  Outstanding  Securities of that series,  by written
notice to the Company and the  Trustee,  may rescind and annul such  declaration
and its consequences if

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

       (A) all overdue interest on all Securities of that series,

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

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

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

    and

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

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


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

       The Company covenants that if
                                       37

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

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

the Company will, upon demand of the Trustee,  pay to it, for the benefit of the
Holders  of such  Securities,  the whole  amount  then due and  payable  on such
Securities  for  principal  and any premium and interest and, to the extent that
payment of such interest shall be legally  enforceable,  interest on any overdue
principal  and  premium  and on any  overdue  interest,  at the  rate  or  rates
prescribed therefor in such Securities,  and, in addition thereto,  such further
amount as shall be  sufficient  to cover the costs and  expenses of  collection,
including the reasonable compensation,  expenses,  disbursements and advances of
the Trustee, its agents and counsel.

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


SECTION 504.  Trustee May File Proofs of Claim.

    In case of any  judicial  proceeding  relative  to the Company (or any other
obligor upon the Securities),  its property or its creditors,  the Trustee shall
be entitled and empowered,  by intervention in such proceeding or otherwise,  to
take any and all actions  authorized  under the Trust  Indenture Act in order to
have claims of the Holders and the Trustee  allowed in any such  proceeding.  In
particular, the Trustee shall be authorized to collect and receive any moneys or
other  property  payable or deliverable on any such claims and to distribute the
same; and any custodian,  receiver, assignee, trustee, liquidator,  sequestrator
or other similar official in any such judicial  proceeding is hereby  authorized
by each Holder to make such  payments to the Trustee  and, in the event that the
Trustee shall consent to the making of such payments directly to the Holders, to
pay to the Trustee any amount due it for the reasonable compensation,  expenses,
disbursements and advances of the Trustee, its agents and counsel, and any other
amounts due the Trustee under Section 607.
                                       38

    No provision of this  Indenture  shall be deemed to authorize the Trustee to
authorize  or  consent to or accept or adopt on behalf of any Holder any plan of
reorganization,  arrangement, adjustment or composition affecting the Securities
or the  rights of any  Holder  thereof or to  authorize  the  Trustee to vote in
respect of the claim of any Holder in any such  proceeding;  provided,  however,
that the  Trustee  may,  on behalf of the  Holders,  vote for the  election of a
trustee in  bankruptcy  or similar  official and be a member of a creditors'  or
other similar committee.


SECTION 505.  Trustee May Enforce Claims Without Possession of Securities.

    All rights of action and claims under this  Indenture or the  Securities may
be prosecuted  and enforced by the Trustee  without the possession of any of the
Securities or the production thereof in any proceeding relating thereto, and any
such  proceeding  instituted  by the Trustee shall be brought in its own name as
trustee of an express trust, and any recovery of judgment shall, after provision
for the payment of the  reasonable  compensation,  expenses,  disbursements  and
advances of the Trustee,  its agents and counsel,  be for the ratable benefit of
the  Holders  of the  Securities  in respect  of which  such  judgment  has been
recovered.


SECTION 506.  Application of Money Collected.

    Any money collected by the Trustee pursuant to this Article shall be applied
in the following  order,  at the date or dates fixed by the Trustee and, in case
of the  distribution  of such money on account of  principal  or any  premium or
interest,  upon  presentation of the Securities and the notation  thereon of the
payment if only partially paid and upon surrender thereof if fully paid:

    FIRST: To the payment of all amounts due the Trustee under Section 607;

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

    THIRD:  To the payment of the  balance,  if any, to the Company or any other
  Person or Persons legally entitled thereto.
                                       39

SECTION 507.  Limitation on Suits.

    No Holder of any  Security of any series  shall have any right to  institute
any proceeding,  judicial or otherwise,  with respect to this Indenture,  or for
the  appointment  of a receiver or trustee,  or for any other remedy  hereunder,
unless

    (1) such  Holder has  previously  given  written  notice to the Trustee of a
  continuing Event of Default with respect to the Securities of that series;

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

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

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

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

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


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

    Notwithstanding  any other  provision in this  Indenture,  the Holder of any
Security shall have the right, which is absolute and  unconditional,  to receive
payment of the  principal  of and any  premium  and  (subject  to  Section  307)
interest on such Security on the respective 
                                       40

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


SECTION 509.  Restoration of Rights and Remedies.

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


SECTION 510.  Rights and Remedies Cumulative.

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


SECTION 511.  Delay or Omission Not Waiver.

    No delay or omission of the  Trustee or of any Holder of any  Securities  to
exercise any right or remedy accruing upon any Event of Default shall impair any
such right or remedy or  constitute  a waiver of any such Event of Default or an
acquiescence therein.  Every right and remedy given by this Article or by law to
the Trustee or to the Holders may be exercised  from time to time,  and as often
as may be deemed  expedient,  by the Trustee or by the Holders,  as the case may
be.
                                       41

SECTION 512.  Control by Holders.

    The Holders of a majority in principal amount of the Outstanding  Securities
of any  series  shall  have the right to direct  the time,  method  and place of
conducting any proceeding for any remedy available to the Trustee, or exercising
any trust or power  conferred on the Trustee,  with respect to the Securities of
such series, provided that

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

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

    (3) subject to the  provisions  of Section 601,  the Trustee  shall have the
  right to  decline to follow any such  direction  if the  Trustee in good faith
  shall, by a Responsible Officer or Officers of the Trustee, determine that the
  proceeding so directed would involve the Trustee in personal liability.


SECTION 513.  Waiver of Past Defaults.

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

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

    (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 impair any right consequent thereon.
                                       42

SECTION 514.  Undertaking for Costs.

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


SECTION 515.  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.


                                  ARTICLE SIX

                                  THE TRUSTEE


SECTION 601.  Certain Duties and Responsibilities.

    The duties and  responsibilities  of the Trustee shall be as provided by the
Trust  Indenture  Act.  Notwithstanding  the  foregoing,  no  provision  of this
Indenture shall require the Trustee to expend or risk its own funds or otherwise
incur any financial liability in the performance of any of its duties hereunder,
or in the exercise of any of its rights or powers,  if it shall have  reasonable
grounds for believing that repayment of such funds or adequate indemnity against
such risk or liability is not  reasonably  assured to it. Whether or not therein
expressly so provided, every provision of this Indenture relating to the conduct
or affecting  the  liability of or affording  protection to the Trustee shall be
subject to the provisions of this Section.
                                       43

SECTION 602.  Notice of Defaults.

    If a default occurs hereunder with respect to Securities of any series,  the
Trustee  shall give the  Holders of  Securities  of such  series  notice of such
default as and to the extent  provided  by the Trust  Indenture  Act;  provided,
however,  that in the case of any default of the character  specified in Section
501(4) with  respect to  Securities  of such  series,  no such notice to Holders
shall be given  until at least 30 days  after the  occurrence  thereof.  For the
purpose of this Section,  the term "default"  means any event which is, or after
notice or lapse of time or both would  become,  an Event of Default with respect
to Securities of such series.


SECTION 603.  Certain Rights of Trustee.

    Subject to the provisions of Section 601:

    (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,
  other evidence of indebtedness or other paper or document believed by it to be
  genuine and to have been signed or presented by the proper party or parties;

    (2) any  request or  direction  of the  Company  mentioned  herein  shall be
  sufficiently  evidenced  by a  Company  Request  or  Company  Order,  and  any
  resolution  of the Board of  Directors  shall 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 of its  selection 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;
                                       44

    (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 pursuant to this Indenture, unless such Holders shall have offered
  to the Trustee  reasonable  security or indemnity against the costs,  expenses
  and liabilities  which might be incurred by it in compliance with such request
  or direction;

    (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,  other  evidence of  indebtedness  or other paper or  document,  but the
  Trustee,  in its discretion,  may make such further  inquiry or  investigation
  into such  facts or  matters  as it may see fit,  and,  if the  Trustee  shall
  determine to make such further inquiry or investigation,  it shall be entitled
  to examine the books,  records and premises of the Company,  personally  or by
  agent or attorney; and

    (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.


SECTION 604.  Not Responsible for Recitals or Issuance of Securities.

    The recitals  contained  herein and in the Securities,  except the Trustee's
certificates of authentication, shall be taken as the statements of the Company,
and 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.  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 605.  May Hold Securities.

    The  Trustee,  any  Authenticating  Agent,  any Paying  Agent,  any Security
Registrar  or any other agent of the  Company,  in its  individual  or any other
capacity, may become the owner or pledgee of Securities and, subject to Sections
608 and 613, may  otherwise  deal with 
                                       45

the  Company  with  the  same  rights  it  would  have if it were  not  Trustee,
Authenticating Agent, Paying Agent, Security Registrar or such other agent.


SECTION 606.  Money Held in Trust.

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


SECTION 607.  Compensation and Reimbursement.

    The Company agrees

    (1) to pay to the Trustee  from time to time such  compensation  as shall be
  agreed to in writing  between the  Company  and the  Trustee for all  services
  rendered  by it  hereunder  (which  compensation  shall not be  limited by any
  provision  of law in regard to the  compensation  of a trustee  of an  express
  trust);

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

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

    The Trustee shall have a lien prior to the Securities  upon all property and
funds held by it hereunder  for any amount owing it or any  predecessor  Trustee
pursuant to this Section 
                                       46

607,  except with  respect to funds held in trust for the benefit of the Holders
of particular Securities.

    Without  limiting any rights  available to the Trustee under applicable law,
when the Trustee incurs expenses or renders services in connection with an Event
of  Default  specified  in  Section  501(5)  or  Section  501(6),  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.

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


SECTION 608.  Conflicting Interests.

    If the  Trustee  has or shall  acquire a  conflicting  interest  within  the
meaning of the Trust  Indenture  Act, the Trustee  shall either  eliminate  such
interest or resign,  to the extent and in the manner provided by, and subject to
the provisions  of, the Trust  Indenture Act and this  Indenture.  To the extent
permitted  by such Act,  the Trustee  shall not be deemed to have a  conflicting
interest  by virtue of being a trustee  under  this  Indenture  with  respect to
Securities of more than one series.



SECTION 609.  Corporate Trustee Required; Eligibility.

    There  shall at all  times be one (and  only  one)  Trustee  hereunder  with
respect to the  Securities  of each series,  which may be Trustee  hereunder for
Securities of one or more other  series.  Each Trustee shall be a Person that is
eligible  pursuant to the Trust  Indenture Act to act as such and has a combined
capital  and  surplus  of at least  $50,000,000.  If any such  Person  publishes
reports of condition at least annually,  pursuant to law or to the  requirements
of its supervising or examining authority, then for the purposes of this Section
and to the extent permitted by the Trust Indenture Act, the combined capital and
surplus of such Person shall be deemed to be its combined capital and surplus as
set forth in its most recent  report of condition so  published.  If at any time
the  Trustee  with  respect to the  Securities  of any series  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.
                                       47

SECTION 610.  Resignation and Removal; Appointment of Successor.

    No  resignation  or removal of the Trustee and no appointment of a successor
Trustee  pursuant to this Article shall become effective until the acceptance of
appointment  by  the  successor   Trustee  in  accordance  with  the  applicable
requirements of Section 611.

    The Trustee may resign at any time with respect to the  Securities of one or
more series by giving written  notice thereof to the Company.  If the instrument
of acceptance by a successor Trustee required by Section 611 shall not have been
delivered  to the  Trustee  within 30 days  after the  giving of such  notice of
resignation,   the  resigning  Trustee  may  petition  any  court  of  competent
jurisdiction  for the  appointment  of a successor  Trustee  with respect to the
Securities of such series.

    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.

    If at any time:

    (1) the Trustee shall fail to comply with Section 608 after written  request
  therefor  by the Company or by any Holder who has been a bona fide Holder of a
  Security for at least six months, or

    (2) the Trustee shall cease to be eligible  under Section 609 and shall fail
  to resign after written request therefor by the Company or by any such Holder,
  or

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

then,  in any such case,  (A) the Company by a Board  Resolution  may remove the
Trustee  with  respect to all  Securities,  or (B) subject to Section  514,  any
Holder  who has been a bona fide  Holder of a  Security  for at least six months
may, on behalf of himself and all others similarly situated,  petition any court
of  competent  jurisdiction  for the removal of the Trustee  with respect to all
Securities and the appointment of a successor Trustee or Trustees.
                                       48

    If the Trustee shall resign, be removed or become incapable of acting, or if
a vacancy  shall occur in the office of Trustee for any cause,  with  respect to
the Securities of one or more series, the Company, by a Board Resolution,  shall
promptly appoint a successor  Trustee or Trustees with respect to the Securities
of that or those series (it being understood that any such successor Trustee may
be appointed with respect to the Securities of one or more or all of such series
and  that at any  time  there  shall be only one  Trustee  with  respect  to the
Securities  of any  particular  series)  and shall  comply  with the  applicable
requirements of Section 611. If, within one year after such resignation, removal
or  incapability,  or the occurrence of such vacancy,  a successor  Trustee with
respect to the Securities of any series shall be appointed by Act of the Holders
of a majority in principal  amount of the Outstanding  Securities of such series
delivered  to the Company and the retiring  Trustee,  the  successor  Trustee so
appointed shall, forthwith upon its acceptance of such appointment in accordance
with the applicable  requirements of Section 611,  become the successor  Trustee
with respect to the  Securities of such series and to that extent  supersede the
successor Trustee appointed by the Company. If no successor Trustee with respect
to the  Securities  of any series shall have been so appointed by the Company or
the Holders and accepted  appointment in the manner required by Section 611, any
Holder who has been a bona fide Holder of a Security of such series for at least
six months may, on behalf of himself and all others similarly situated, petition
any court of competent  jurisdiction for the appointment of a successor  Trustee
with respect to the Securities of such series.

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


SECTION 611.  Acceptance of Appointment by Successor.

    In case of the appointment  hereunder of a successor Trustee with respect to
all  Securities,  every such  successor  Trustee  so  appointed  shall  execute,
acknowledge and deliver to the Company and to the retiring Trustee an instrument
accepting  such  appointment,  and thereupon the  resignation  or removal of the
retiring Trustee shall become effective and such successor Trustee,  without any
further  act,  deed or  conveyance,  shall  become  vested  with all the rights,
powers,  trusts and duties of the retiring  Trustee;  but, on the request of the
Company or the successor  Trustee,  such retiring Trustee shall, upon payment of
its charges,  execute and deliver an instrument  transferring  to such successor
Trustee all the rights, powers and trusts of the retiring Trustee and shall duly
assign,  transfer and deliver to such  successor  Trustee all property and money
held by such retiring Trustee hereunder.
                                       49

    In case of the appointment  hereunder of a successor Trustee with respect to
the  Securities of one or more (but not all) series,  the Company,  the retiring
Trustee and each successor Trustee with respect to the Securities of one or more
series shall execute and deliver an indenture  supplemental  hereto wherein each
successor Trustee shall accept such appointment and which (1) shall contain such
provisions as shall be necessary or desirable to transfer and confirm to, and to
vest in, each successor Trustee all the rights, powers, trusts and duties of the
retiring Trustee with respect to the Securities of that or those series to which
the appointment of such successor  Trustee relates,  (2) if the retiring Trustee
is not retiring with respect to all Securities, shall contain such provisions as
shall be deemed  necessary or desirable to confirm that all the rights,  powers,
trusts and duties of the retiring Trustee with respect to the Securities of that
or those series as to which the retiring  Trustee is not retiring shall continue
to be vested in the retiring Trustee,  and (3) shall add to or change any of the
provisions of this  Indenture as shall be necessary to provide for or facilitate
the  administration  of the trusts hereunder by more than one Trustee,  it being
understood  that  nothing  herein  or  in  such  supplemental   indenture  shall
constitute  such  Trustees  co-trustees  of the same  trust  and that  each such
Trustee shall be trustee of a trust or trusts hereunder  separate and apart from
any trust or trusts hereunder  administered by any other such Trustee;  and upon
the execution and delivery of such  supplemental  indenture the  resignation  or
removal of the retiring  Trustee shall become  effective to the extent  provided
therein  and each such  successor  Trustee,  without any  further  act,  deed or
conveyance,  shall become vested with all the rights,  powers, trusts and duties
of the retiring  Trustee with respect to the  Securities of that or those series
to which the appointment of such successor  Trustee relates;  but, on request of
the Company or any successor  Trustee,  such retiring Trustee shall duly assign,
transfer  and deliver to such  successor  Trustee all property and money held by
such retiring Trustee  hereunder with respect to the Securities of that or those
series to which the appointment of such successor Trustee relates.

    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 the
first or second preceding paragraph, as the case may be.

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

    Any  corporation  into which the Trustee may be merged or  converted or with
which it may be  consolidated,  or any  corporation  resulting  from any merger,
conversion  or  consolidation  to which  the  Trustee  shall be a party,  or any
corporation  succeeding to all or 
                                       50

substantially  all the  corporate  trust  business of the Trustee,  shall be the
successor of the Trustee hereunder, provided such corporation shall be otherwise
qualified and eligible  under this  Article,  without the execution or filing of
any paper or any further act on the part of any of the parties  hereto.  In case
any Securities shall have been authenticated,  but not delivered, by the Trustee
then in office,  any successor by merger,  conversion or  consolidation  to such
authenticating  Trustee may adopt such authentication and deliver the Securities
so  authenticated  with the same effect as if such successor  Trustee had itself
authenticated such Securities.


SECTION 613.  Preferential Collection of Claims Against Company.

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


SECTION 614.  Appointment of Authenticating Agent.

    The Trustee may appoint an  Authenticating  Agent or Agents with  respect to
one or more series of  Securities  which shall be authorized to act on behalf of
the Trustee to  authenticate  Securities  of such series  issued upon  exchange,
registration  of transfer or partial  redemption  thereof or pursuant to Section
306, and Securities so  authenticated  shall be entitled to the benefits of this
Indenture and shall be valid and obligatory for all purposes as if authenticated
by the Trustee  hereunder.  Wherever  reference is made in this Indenture to the
authentication  and  delivery  of  Securities  by the  Trustee or the  Trustee's
certificate  of  authentication,  such  reference  shall be  deemed  to  include
authentication and delivery on behalf of the Trustee by an Authenticating  Agent
and a  certificate  of  authentication  executed  on behalf of the Trustee by an
Authenticating  Agent.  Each  Authenticating  Agent shall be  acceptable  to the
Company and shall at all times be a  corporation  organized  and doing  business
under  the laws of the  United  States of  America,  any  State  thereof  or the
District of Columbia, authorized under such laws to act as Authenticating Agent,
having a combined  capital and surplus of not less than  $50,000,000 and subject
to  supervision  or  examination  by  Federal  or  State   authority.   If  such
Authenticating Agent publishes reports of condition at least annually,  pursuant
to law or to the requirements of said supervising or examining  authority,  then
for the  purposes  of this  Section,  the  combined  capital and surplus of such
Authenticating  Agent shall be deemed to be its combined  capital and surplus as
set forth in its most recent report of condition so published. If at any time an
Authenticating  Agent  shall  
                                       51

cease to be eligible in accordance  with the  provisions  of this Section,  such
Authenticating  Agent shall resign immediately in the manner and with the effect
specified in this Section.

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

    An  Authenticating  Agent may  resign at any time by giving  written  notice
thereof to the Trustee and to the Company. The Trustee may at any time terminate
the agency of an  Authenticating  Agent by giving written notice thereof to such
Authenticating  Agent  and to the  Company.  Upon  receiving  such a  notice  of
resignation  or  upon  such  a  termination,   or  in  case  at  any  time  such
Authenticating  Agent  shall  cease  to  be  eligible  in  accordance  with  the
provisions of this Section,  the Trustee may appoint a successor  Authenticating
Agent  which  shall be  acceptable  to the Company and shall give notice of such
appointment  in the manner  provided in Section 106 to all Holders of Securities
of the series with respect to which such  Authenticating  Agent will serve.  Any
successor  Authenticating  Agent upon  acceptance of its  appointment  hereunder
shall become  vested with all the rights,  powers and duties of its  predecessor
hereunder,  with like effect as if originally named as an Authenticating  Agent.
No successor  Authenticating  Agent shall be appointed unless eligible under the
provisions of this Section.

    The  Company  agrees to pay to each  Authenticating  Agent from time to time
reasonable compensation 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  the  Trustee's  certificate  of  authentication,   an  alternative
certificate of authentication in the following form:
                                       52

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


                                       THE CHASE MANHATTAN BANK,
                                          As Trustee



                                       By......................................,
                                          As Authenticating Agent



                                       By.......................................
                                          Authorized Officer
                                       53

                                 ARTICLE SEVEN

               HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY


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

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

    (1) fifteen days after each Regular Record Date, a list, in such form as the
  Trustee may reasonably  require,  of the names and addresses of the Holders of
  Securities of each series as of such Regular Record Date, and

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

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


SECTION 702.  Preservation of Information; Communications to Holders.

    The  Trustee  shall  preserve,  in  as  current  a  form  as  is  reasonably
practicable,  the names and  addresses  of Holders  contained in the most recent
list  furnished  to the  Trustee as  provided  in Section  701 and the names and
addresses  of Holders  received  by the  Trustee  in its  capacity  as  Security
Registrar.  The  Trustee may  destroy  any list  furnished  to it as provided in
Section 701 upon receipt of a new list so furnished.

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

    Every Holder of Securities,  by receiving and holding the same,  agrees with
the  Company and the  Trustee  that  neither the Company nor the Trustee nor any
agent of either of them shall be held accountable by reason of any disclosure of
information  as to names and  addresses  of Holders  made  pursuant to the Trust
Indenture Act.
                                       54

SECTION 703.  Reports by Trustee.

    The Trustee shall  transmit to Holders such reports  concerning  the Trustee
and its actions  under this  Indenture as may be required  pursuant to the Trust
Indenture  Act at the times and in the  manner  provided  pursuant  thereto.  If
required by Section 313(a) of the Trust Indenture Act, the Trustee shall, within
sixty days after each May 15  following  the date of this  Indenture  deliver to
Holders  a brief  report,  dated  as of such  May 15,  which  complies  with the
provisions of such 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 with the Company.  The Company
will  promptly  notify the Trustee when any  Securities  are listed on any stock
exchange.


SECTION 704.  Reports by Company.

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


                                 ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE


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

    The Company  shall not  consolidate  with or merge into any other  Person or
convey, transfer or lease its properties and assets substantially as an entirety
to any Person,  and the Company shall not permit any Person to consolidate  with
or merge into the Company or convey, transfer or lease its properties and assets
substantially as an entirety to the Company, unless:
                                       55

    (1) in case the Company shall  consolidate with or merge into another Person
  or convey,  transfer or lease its  properties and assets  substantially  as an
  entirety to any Person,  the Person formed by such consolidation or into which
  the Company is merged or the Person which  acquires by conveyance or transfer,
  or which leases, the properties and assets of the Company  substantially as an
  entirety shall be a corporation,  partnership,  unincorporated organization or
  trust,  shall be organized and validly  existing  under the laws of the United
  States of America,  any State  thereof or the  District of Columbia  and shall
  expressly assume, by an indenture supplemental hereto,  executed and delivered
  to the Trustee,  in form  satisfactory  to the  Trustee,  the due and punctual
  payment of the principal of and any premium and interest on all the Securities
  and the  performance  or observance of every covenant of this Indenture on the
  part of the Company to be performed or observed;

    (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 of such  transaction  as having  been  incurred  by the Company or such
  Subsidiary at the time of such transaction,  no Event of Default, and no event
  which,  after  notice  or  lapse  of time or both,  would  become  an Event of
  Default, shall have happened and be continuing;

    (3) if, as a result of any such  consolidation or merger or such conveyance,
  transfer or lease, properties or assets of the Company would become subject to
  a mortgage,  pledge,  lien, security interest or other encumbrance which would
  not be permitted by this Indenture,  the Company or such successor  Person, as
  the case may be,  shall take such steps as shall be necessary  effectively  to
  secure the Securities  equally and ratably with (or prior to) all indebtedness
  secured thereby; and

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


SECTION 802.  Successor Substituted.

    Upon any  consolidation  of the Company with, or merger of the Company into,
any other  Person or any  conveyance,  transfer or lease of the  properties  and
assets of the Company  substantially  as an entirety in accordance  with Section
801, the successor Person formed by such consolidation 
                                       56

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


                                  ARTICLE NINE

                            SUPPLEMENTAL INDENTURES


SECTION 901.  Supplemental Indentures Without Consent of Holders.

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

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

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

    (3) to add any  additional  Events of Default for the benefit of the Holders
  of all or any series of Securities (and if such  additional  Events of Default
  are to be for the benefit of less than all series of Securities,  stating that
  such additional  Events of Default are expressly being included solely for the
  benefit of such series); or

    (4) to add to or change  any of the  provisions  of this  Indenture  to such
  extent  as  shall be  necessary  to  permit  or  facilitate  the  issuance  of
  Securities in bearer form, registrable or not registrable as to principal, and
  with or without interest  coupons,  or to permit or facilitate the issuance of
  Securities in uncertificated form; or
                                       57

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

    (6) to secure the Securities; or

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

    (8) to evidence and provide for the acceptance of appointment hereunder by a
  successor  Trustee with respect to the Securities of one or more series and to
  add to or change any of the provisions of this Indenture as shall be necessary
  to provide for or facilitate  the  administration  of the trusts  hereunder by
  more than one Trustee, pursuant to the requirements of Section 611; 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,  provided that such action  pursuant to this Clause (9) shall
  not adversely  affect the interests of the Holders of Securities of any series
  in any material respect.


SECTION 902.  Supplemental Indentures With Consent of Holders.

    With the consent of the Holders of not less than 66-2/3% in principal amount
of the  Outstanding  Securities  of each series  affected  by such  supplemental
indenture,  by Act of said Holders delivered to the Company and the Trustee, the
Company,  when authorized by a Board Resolution,  and the Trustee may enter into
an indenture  or  indentures  supplemental  hereto for the purpose of adding any
provisions to or changing in any manner or eliminating  any of the provisions of
this  Indenture  or of  modifying  in any manner  the  rights of the  Holders of
Securities of such series under this Indenture;  provided, however, that no such
supplemental  indenture  shall,  without  the  consent  of the  Holder  of  each
Outstanding Security affected thereby,

    (1) change the Stated  Maturity of the  principal  of, or any  instalment of
  principal  of or interest on, any  Security,  or reduce the  principal  amount
  thereof  or 
                                       58

  the rate of  interest  thereon  or any  premium  payable  upon the  redemption
  thereof,  or reduce the amount of the principal of an Original  Issue Discount
  Security  or any  other  Security  which  would  be  due  and  payable  upon a
  declaration of acceleration of the Maturity  thereof  pursuant to Section 502,
  or change any Place of Payment  where,  or the coin or currency in which,  any
  Security or any premium or interest thereon is payable, or impair the right to
  institute suit for the  enforcement of any such payment on or after the Stated
  Maturity  thereof (or, in the case of  redemption,  on or after the Redemption
  Date), or

    (2) reduce the percentage in principal amount of the Outstanding  Securities
  of any  series,  the  consent  of  whose  Holders  is  required  for any  such
  supplemental  indenture,  or the consent of whose  Holders is required for any
  waiver (of  compliance  with certain  provisions of this  Indenture or certain
  defaults hereunder and their consequences) provided for in this Indenture, or

    (3) modify any of the  provisions  of this  Section,  Section 513 or Section
  1008,  except to increase any such percentage or to provide that certain other
  provisions of this Indenture  cannot be modified or waived without the consent
  of the  Holder  of  each  Outstanding  Security  affected  thereby;  provided,
  however,  that this  clause  shall not be deemed to require the consent of any
  Holder  with  respect  to  changes  in the  references  to "the  Trustee"  and
  concomitant  changes in this Section and Section 1008, or the deletion of this
  proviso, in accordance with the requirements of Sections 611 and 901(8).

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

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


SECTION 903.  Execution of Supplemental Indentures.

    In  executing,   or  accepting  the   additional   trusts  created  by,  any
supplemental indenture permitted by this Article or the modifications thereby of
the trusts created by this Indenture,  the Trustee shall be entitled to receive,
and  (subject  to Section  601) shall be fully  protected  in relying  
                                       59

upon,  an Opinion of Counsel  stating that the  execution  of such  supplemental
indenture is  authorized  or permitted by this  Indenture.  The Trustee may, but
shall not be obligated  to,  enter into any such  supplemental  indenture  which
affects the Trustee's own rights,  duties or immunities  under this Indenture or
otherwise.


SECTION 904.  Effect of Supplemental Indentures.

    Upon the execution of any  supplemental  indenture under this Article,  this
Indenture  shall be  modified in  accordance  therewith,  and such  supplemental
indenture shall form a part of this Indenture for all purposes; and every Holder
of Securities  theretofore or thereafter  authenticated and delivered  hereunder
shall be bound thereby.


SECTION 905.  Conformity with Trust Indenture Act.

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


SECTION 906.  Reference in Securities to Supplemental Indentures.

    Securities of any series  authenticated and delivered after the execution of
any supplemental  indenture  pursuant to this Article may, and shall if required
by the Trustee, bear a notation in form approved by the Trustee as to any matter
provided for in such supplemental  indenture. If the Company shall so determine,
new  Securities  of any series so modified as to conform,  in the opinion of the
Trustee and the Company, to any such supplemental  indenture may be prepared and
executed  by the  Company  and  authenticated  and  delivered  by the Trustee in
exchange for Outstanding Securities of such series.
                                       60

                                  ARTICLE TEN

                                   COVENANTS


SECTION 1001.  Payment of Principal, Premium and Interest.

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


SECTION 1002.  Maintenance of Office or Agency.

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

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


SECTION 1003.  Money for Securities Payments to Be Held in Trust.

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

    Whenever the Company  shall have one or more Paying Agents for any series of
Securities,  it will,  prior to each due date of the principal of or any premium
or interest on any Securities of that 
                                       61

series,  deposit with a Paying Agent a sum  sufficient to pay such amount,  such
sum to be held as provided by the Trust  Indenture  Act, and (unless such Paying
Agent is the Trustee) the Company will promptly notify the Trustee of its action
or failure so to act.

    The Company will cause each Paying Agent for any series of Securities  other
than the Trustee to execute and  deliver to the Trustee an  instrument  in which
such Paying Agent shall agree with the  Trustee,  subject to the  provisions  of
this Section,  that such Paying Agent will (1) comply with the provisions of the
Trust  Indenture  Act  applicable  to it as a Paying  Agent and (2)  during  the
continuance  of any  default  by the  Company  (or any  other  obligor  upon the
Securities  of that  series)  in the  making of any  payment  in  respect of the
Securities of that series,  upon the written  request of the Trustee,  forthwith
pay to the Trustee  all sums held in trust by such  Paying  Agent for payment in
respect of the Securities of that series.

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

    Any money  deposited  with the Trustee or any Paying Agent,  or then held by
the  Company,  in trust for the  payment of the  principal  of or any premium or
interest on any  Security of any series and  remaining  unclaimed  for two years
after such  principal,  premium or interest has become due and payable  shall be
paid to the Company on Company  Request,  or (if then held by the Company) shall
be discharged from such trust; and the Holder of such Security shall thereafter,
as an unsecured general creditor,  look only to the Company for payment thereof,
and all liability of the Trustee or such Paying Agent with respect to such trust
money,  and all  liability of the Company as trustee  thereof,  shall  thereupon
cease;  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 a newspaper published in the English language, customarily
published  on each  Business  Day and of general  circulation  in the Borough of
Manhattan,  The City of New York,  New York,  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.  Statement by Officers as to Default.

    The Company will  deliver to the  Trustee,  within 120 days after the end of
each fiscal year of the  Company  ending  after the date  hereof,  an  Officers'
Certificate, stating whether or not to the 
                                       62

best  knowledge  of  the  signers  thereof  the  Company  is in  default  in the
performance  and  observance of any of the terms,  provisions  and conditions of
this Indenture  (without  regard to any period of grace or requirement of notice
provided hereunder) and, if the Company shall be in default, specifying all such
defaults and the nature and status thereof of which they may have knowledge.


SECTION 1005.  Existence.

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


SECTION 1006.  Maintenance of Properties.

    The Company will cause all  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;  provided,  however,  that
nothing in this  Section  shall  prevent  the  Company  from  discontinuing  the
operation or maintenance of any of such properties if such discontinuance is, in
the  judgment of the  Company,  desirable  in the conduct of its business or the
business of any Subsidiary and not  disadvantageous  in any material  respect to
the Holders.


SECTION 1007.  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 the Company 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.
                                       63

SECTION 1008.  Waiver of Certain Covenants.

    Except as otherwise  specified as contemplated by Section 301 for Securities
of such series,  the Company may, with respect to the  Securities of any series,
omit in any particular instance to comply with any term,  provision or condition
set forth in any covenant provided pursuant to Section 301(19), 901(2) or 901(7)
for the benefit of the Holders of such series or in any of Sections 1006 through
1007 if before the time for such  compliance  the Holders of at least 66-2/3% in
principal  amount of the Outstanding  Securities of such series shall, by Act of
such Holders,  either waive such  compliance in such instance or generally waive
compliance  with such term,  provision  or  condition,  but no such waiver shall
extend to or affect such term,  provision or  condition  except to the extent so
expressly waived, and, until such waiver shall become effective, the obligations
of the  Company  and the  duties of the  Trustee  in  respect  of any such term,
provision or condition shall remain in full force and effect.


SECTION 1009.  Calculation of Original Issue Discount.

    The Company shall file with the Trustee promptly at the end of each calendar
year  a  written  notice  specifying  the  amount  of  original  issue  discount
(including daily rates and accrual periods) accrued on Outstanding Securities as
of the end of such year.


                                 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 such Securities) 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 a
Board  Resolution or in another manner  specified as contemplated by Section 301
for such  Securities.  In case 
                                       64

of any redemption at the election of the Company, the Company shall, at least 60
days prior to the Redemption  Date fixed by the Company (unless a shorter notice
shall be  satisfactory  to the Trustee),  notify the Trustee of such  Redemption
Date, of the  principal  amount of Securities of such series to be redeemed and,
if applicable, of the tenor of the Securities to be redeemed. In the case of any
redemption of Securities (a) prior to the expiration of any  restriction on such
redemption  provided  in the  terms  of such  Securities  or  elsewhere  in this
Indenture,  or (b) pursuant to an election of the Company  which is subject to a
condition  specified  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 or condition.


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

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

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

    The provisions of the two preceding  paragraphs shall not apply with respect
to any redemption affecting only a single Security,  whether such Security is to
be redeemed in whole or in part. In the case of any such redemption in part, the
unredeemed  portion  of the  principal  amount  of the  Security  shall be in an
authorized  denomination  (which  shall not be less than the minimum  authorized
denomination) for such Security.

    For all purposes of this Indenture,  unless the context otherwise  requires,
all  provisions  relating to the redemption of Securities  shall relate,  in the
case of any  Securities  redeemed or to be 
                                       65

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


SECTION 1104.  Notice of Redemption.

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

    All notices of  redemption  shall  identify  the  Securities  to be redeemed
(including CUSIP number) and shall state:

    (1) the Redemption Date,

    (2) the Redemption Price,

    (3) if less  than all the  Outstanding  Securities  of any  series  and of a
  specified tenor  consisting of more than a single Security are to be redeemed,
  the  identification  (and,  in the  case of  partial  redemption  of any  such
  Securities, the principal amounts) of the particular Securities to be redeemed
  and,  if less  than all the  Outstanding  Securities  of any  series  and of a
  specified  tenor  consisting  of a single  Security  are to be  redeemed,  the
  principal amount of the particular Security to be redeemed,

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

    (5) the place or places where each such  Security is to be  surrendered  for
  payment of the Redemption Price, and

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

    Notice of  redemption  of  Securities  to be redeemed at the election of the
Company  shall be given by the  Company  or, at the  Company's  request,  by the
Trustee in the name and at the expense of the Company and shall be irrevocable.
                                       66

SECTION 1105.  Deposit of Redemption Price.

    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,
segregate  and hold in trust as  provided  in  Section  1003) an amount of money
sufficient to pay the Redemption  Price of, and (except if the  Redemption  Date
shall be an Interest Payment Date) accrued interest on, all the Securities which
are to be redeemed on that date.


SECTION 1106.  Securities Payable on Redemption Date.

    Notice of redemption having been given as aforesaid, the Securities so to be
redeemed shall, on the Redemption Date, become due and payable at the Redemption
Price therein specified,  and from and after such date (unless the Company shall
default in the  payment  of the  Redemption  Price and  accrued  interest)  such
Securities shall cease to bear interest. Upon surrender of any such Security for
redemption in accordance  with said notice,  such Security  shall be paid by the
Company  at  the  Redemption  Price,  together  with  accrued  interest  to  the
Redemption  Date;  provided,   however,  that,  unless  otherwise  specified  as
contemplated  by Section 301,  installments of interest whose Stated Maturity is
on or prior to the  Redemption  Date  will be  payable  to the  Holders  of such
Securities,  or one or more  Predecessor  Securities,  registered as such at the
close of business on the relevant  Record Dates according to their terms and the
provisions of Section 307.

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


SECTION 1107.  Securities Redeemed in Part.

    Any Security  which is to be redeemed only in part shall be surrendered at a
Place of Payment therefor (with, if the Company or the Trustee so requires,  due
endorsement by, or a written  instrument of transfer in form satisfactory to the
Company and the Trustee  duly  executed  by, the Holder  thereof or his attorney
duly  authorized  in writing),  and the Company shall  execute,  and the Trustee
shall  authenticate  and deliver to the Holder of such Security  without service
charge,  a new Security or Securities  of the same series and of like tenor,  of
any authorized  denomination as requested by such Holder, in aggregate principal
amount equal to and in exchange for the  unredeemed  portion of the principal of
the Security so surrendered.
                                       67

                                 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 any series  except as otherwise  specified as
contemplated by Section 301 for such Securities.

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


SECTION 1202.  Satisfaction of Sinking Fund Payments with Securities.

    The Company (1) may deliver  Outstanding  Securities of a series (other than
any previously  called for redemption) and (2) may apply as a credit  Securities
of a series  which have been  redeemed  either at the  election  of the  Company
pursuant to the terms of such Securities or through the application of permitted
optional sinking fund payments pursuant to the terms of such Securities, in each
case in satisfaction of all or any part of any sinking fund payment with respect
to any  Securities  of such series  required to be made pursuant to the terms of
such  Securities  as and to the  extent  provided  for  by  the  terms  of  such
Securities;  provided  that  the  Securities  to be so  credited  have  not been
previously so credited.  The  Securities to be so credited shall be received and
credited for such purpose by the Trustee at the Redemption  Price,  as specified
in the  Securities so to be redeemed,  for redemption  through  operation of the
sinking  fund and the  amount of such  sinking  fund  payment  shall be  reduced
accordingly.
                                       68

SECTION 1203.  Redemption of Securities for Sinking Fund.

    Not  less  than 60 days  prior to each  sinking  fund  payment  date for any
Securities,  the Company will  deliver to the Trustee an  Officers'  Certificate
specifying  the  amount  of the  next  ensuing  sinking  fund  payment  for such
Securities  pursuant to the terms of such Securities,  the portion  thereof,  if
any,  which is to be  satisfied by payment of cash and the portion  thereof,  if
any, which is to be satisfied by delivering and crediting Securities pursuant to
Section 1202 and stating the basis for such credit and that such Securities have
not been  previously  so  credited  and will also  deliver  to the  Trustee  any
Securities to be so delivered.  Not less than 30 days prior to each such sinking
fund payment date,  the Trustee shall select the  Securities to be redeemed upon
such sinking fund payment date in the manner specified in Section 1103 and cause
notice of the  redemption  thereof to be given in the name of and at the expense
of the Company in the manner  provided in Section 1104.  Such notice having been
duly given,  the redemption of such Securities  shall be made upon the terms and
in the manner stated in Sections 1106 and 1107.


                                ARTICLE THIRTEEN

                       DEFEASANCE AND COVENANT DEFEASANCE


SECTION 1301.  Company's Option to Effect Defeasance or Covenant Defeasance.

    The Company may elect,  at its option at any time,  to have  Section 1302 or
Section 1303 applied to any Securities or any series of Securities,  as the case
may be, designated  pursuant to Section 301 as being defeasible pursuant to such
Section 1302 or 1303, in accordance  with any applicable  requirements  provided
pursuant to Section 301 and upon  compliance with the conditions set forth below
in this Article.  Any such election shall be evidenced by a Board  Resolution or
in another manner specified as contemplated by Section 301 for such Securities.


SECTION 1302.  Defeasance and Discharge.

    Upon the  Company's  exercise  of its option  (if any) to have this  Section
applied to any Securities or any series of  Securities,  as the case may be, the
Company  shall be deemed  to have  been  discharged  from its  obligations  with
respect to such Securities as provided in this Section on and after the date the
conditions  set  forth  in  Section  1304  are  satisfied   (hereinafter  called
"Defeasance"). For this purpose, such Defeasance means that the Company shall be
deemed to have paid and discharged the entire  indebtedness  represented by such
Securities and to have satisfied all its other obligations under such Securities
and this Indenture insofar as such Securities are concerned (and the Trustee, at
the expense of the Company,  shall execute proper instruments  acknowledging the
same),  subject 
                                       69

to the following  which shall survive until  otherwise  terminated or discharged
hereunder:  (1) the rights of Holders of such Securities to receive, solely from
the trust fund  described  in  Section  1304 and as more fully set forth in such
Section, payments in respect of the principal of and any premium and interest on
such  Securities  when  payments are due,  (2) the  Company's  obligations  with
respect to such Securities  under Sections 304, 305, 306, 1002 and 1003 and with
respect to the Trustee under Section 607, (3) the rights, powers, trusts, duties
and  immunities  of the  Trustee  hereunder  and (4) this  Article.  Subject  to
compliance  with this  Article,  the Company may exercise its option (if any) to
have this Section applied to any Securities  notwithstanding  the prior exercise
of its option (if any) to have Section 1303 applied to such Securities.


SECTION 1303.  Covenant Defeasance.

    Upon the  Company's  exercise  of its option  (if any) to have this  Section
applied to any Securities or any series of  Securities,  as the case may be, (1)
the  Company  shall be  released  from its  obligations  under  Section  801(3),
Sections 1006 through 1007,  inclusive,  and any covenants  provided pursuant to
Section 301(19), 901(2), 901(6) or 901(7) for the benefit of the Holders of such
Securities  and (2) the  occurrence  of any event  specified in Sections  501(4)
(with respect to any of Section 801(3),  Sections 1006 through 1007,  inclusive,
and any such covenants provided pursuant to Section 301(19),  901(2),  901(6) or
901(7))  and  501(7)  shall be deemed not to be or result in an Event of Default
with  respect to such  Securities  as provided in this  Section on and after the
date the conditions set forth in Section 1304 are satisfied  (hereinafter called
"Covenant  Defeasance").  For this purpose, such Covenant Defeasance means that,
with respect to such  Securities,  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  specified  Section (to the extent so  specified in the case of Section
501(4)),  whether  directly or indirectly  by reason of any reference  elsewhere
herein to any such Section or by reason of any  reference in any such Section to
any other provision  herein or in any other document,  but the remainder of this
Indenture and such Securities shall be unaffected thereby.


SECTION 1304.  Conditions to Defeasance or Covenant Defeasance.

    The following  shall be the conditions to the application of Section 1302 or
Section 1303 to any Securities or any series of Securities, as the case may be:

    (1) The Company shall  irrevocably  have deposited or caused to be deposited
  with the  Trustee  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,  (A) money in an amount, or
  (B) U.S.  Government  Obligations  which  through  the  scheduled  payment  of
  principal and 
                                       70

  interest in respect thereof in accordance  with their terms will provide,  not
  later than one day before the due date of any payment,  money in an amount, or
  (C) a  combination  thereof,  in each case  sufficient,  in the  opinion  of a
  nationally  recognized firm of independent public  accountants  expressed in a
  written  certification thereof delivered to the Trustee, to pay and discharge,
  and which shall be applied by the Trustee to pay and discharge,  the principal
  of and any premium and interest on such  Securities on the  respective  Stated
  Maturities or on any Redemption Date established pursuant to clause (9) below,
  in accordance  with the terms of this Indenture and such  Securities.  As used
  herein,  "U.S.  Government  Obligation"  means (x) any security which is (i) a
  direct obligation of the United States of America for the payment of which the
  full faith and  credit of the  United  States of America is pledged or (ii) an
  obligation of a Person  controlled or supervised by and acting as an agency or
  instrumentality  of the  United  States of  America  the  payment  of which is
  unconditionally guaranteed as a full faith and credit obligation by the United
  States of  America,  which,  in either  case (i) or (ii),  is not  callable or
  redeemable at the option of the issuer thereof, and (y) any depositary receipt
  issued by a bank (as  defined in Section  3(a)(2)  of the  Securities  Act) as
  custodian with respect to any U.S. Government Obligation which is specified in
  Clause  (x) above and held by such bank for the  account of the holder of such
  depositary receipt, or with respect to any specific payment of principal of or
  interest on any U.S.  Government  Obligation  which is so specified  and held,
  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  depositary
  receipt  from any  amount  received  by the  custodian  in respect of the U.S.
  Government  Obligation  or the  specific  payment  of  principal  or  interest
  evidenced by such depositary receipt.

    (2) In the event of an election to have Section 1302 apply to any Securities
  or any  series of  Securities,  as the case may be,  the  Company  shall  have
  delivered  to the Trustee an Opinion of Counsel  stating  that (A) the Company
  has  received  from,  or there has been  published  by, the  Internal  Revenue
  Service a ruling or (B)  since the date of this  instrument,  there has been a
  change in the applicable  Federal income tax law, in either case (A) or (B) to
  the effect that,  and based  thereon  such opinion  shall  confirm  that,  the
  Holders of such  Securities will not recognize gain or loss for Federal income
  tax  purposes  as a result of the  deposit,  Defeasance  and  discharge  to be
  effected with respect to such Securities and will be subject to Federal income
  tax on the same  amount,  in the same manner and at the same times as would be
  the case if such deposit, Defeasance and discharge were not to occur.

    (3) In the event of an election to have Section 1303 apply to any Securities
  or any  series of  Securities,  as the case may be,  the  Company  shall  have
  delivered  to the Trustee an Opinion of Counsel to the effect that the Holders
  of such  Securities  will not  recognize  gain or loss for Federal  income tax
  purposes  as a result of the 
                                       71

  deposit and Covenant Defeasance to be effected with respect to such Securities
  and will be  subject to Federal  income  tax on the same  amount,  in the same
  manner and at the same times as would be the case if such deposit and Covenant
  Defeasance were not to occur.

    (4) The Company shall have delivered to the Trustee an Officers' Certificate
  to the effect that neither such  Securities  nor any other  Securities  of the
  same series, if then listed on any securities exchange,  will be delisted as a
  result of such deposit.

    (5) No event  which  is,  or  after  notice  or lapse of time or both  would
  become,  an Event of  Default  with  respect to such  Securities  or any other
  Securities  shall have  occurred and be continuing at the time of such deposit
  or, with regard to any such event specified in Sections 501(5) and (6), at any
  time on or prior to the 90th day  after  the date of such  deposit  (it  being
  understood that this condition shall not be deemed  satisfied until after such
  90th day).

    (6) Such  Defeasance or Covenant  Defeasance  shall not cause the Trustee to
  have a  conflicting  interest  within the meaning of the Trust  Indenture  Act
  (assuming all Securities are in default within the meaning of such Act).

    (7) Such Defeasance or Covenant  Defeasance  shall not result in a breach or
  violation of, or constitute a default under, any other agreement or instrument
  to which the Company is a party or by which it is bound.

    (8) Such  Defeasance  or Covenant  Defeasance  shall not result in the trust
  arising  from such  deposit  constituting  an  investment  company  within the
  meaning of the  Investment  Company Act unless such trust shall be  registered
  under such Act or exempt from registration thereunder.

    (9) If the  Securities are to be redeemed  prior to Stated  Maturity  (other
  than from mandatory  sinking fund payments or analogous  payments),  notice of
  such  redemption  shall have been duly given  pursuant  to this  Indenture  or
  provision therefor satisfactory to the Trustee shall have been made.

    (10)  The  Company  shall  have   delivered  to  the  Trustee  an  Officers'
  Certificate  and an Opinion  of  Counsel,  each  stating  that all  conditions
  precedent  with respect to such  Defeasance or Covenant  Defeasance  have been
  complied with.
                                       72

SECTION 1305.  Deposited Money and U.S. Government Obligations to Be Held in 
               Trust; Miscellaneous Provisions.

    Subject to the  provisions of the last  paragraph of Section 1003, all money
and U.S. Government  Obligations (including the proceeds thereof) deposited with
the Trustee  pursuant to Section 1304 in respect of any Securities shall be held
in trust and applied by the Trustee,  in accordance  with the provisions of such
Securities and this  Indenture,  to the payment,  either directly or through any
such Paying Agent  (including the Company acting as its own Paying Agent) as the
Trustee may determine, to the Holders of such Securities, of all sums due and to
become due thereon in respect of  principal  and any premium and  interest,  but
money so held in trust need not be  segregated  from other  funds  except to the
extent required by law.

    The Company  shall pay and  indemnify  the Trustee  against any tax,  fee or
other  charge  imposed on or assessed  against the U.S.  Government  Obligations
deposited  pursuant to Section 1304 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 Outstanding Securities.

    Anything in this Article to the contrary notwithstanding,  the Trustee shall
deliver or pay to the Company from time to time upon  Company  Request any money
or U.S.  Government  Obligations  held by it as  provided  in Section  1304 with
respect to any Securities 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 the Defeasance or Covenant Defeasance,  as
the case may be, with respect to such Securities.


SECTION 1306.  Reinstatement.

    If the  Trustee  or the  Paying  Agent  is  unable  to  apply  any  money in
accordance  with this Article with  respect to any  Securities  by reason of any
order or judgment of any court or governmental authority enjoining,  restraining
or otherwise  prohibiting  such  application,  then the  obligations  under this
Indenture  and such  Securities  from which the Company has been  discharged  or
released  pursuant to Section  1302 or 1303 shall be revived and  reinstated  as
though no deposit had  occurred  pursuant to this  Article  with respect to such
Securities, until such time as the Trustee or Paying Agent is permitted to apply
all money held in trust pursuant to Section 1305 with respect to such Securities
in accordance with this Article;  provided,  however,  that if the Company makes
any payment of  principal  of or any  premium or  interest on any such  Security
following such reinstatement of its obligations, the Company shall be subrogated
to the rights (if any) of the Holders of such Securities to receive such payment
from the money so held in trust.
                                       73

                         -----------------------------


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

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


                                        ARIZONA PUBLIC SERVICE COMPANY


                                        By       Michael V. Palmeri
                                          --------------------------------------
                                                      Treasurer

Attest:


    Betsy A. Pregulman
- --------------------------------
    Associate Secretary


                                        THE CHASE MANHATTAN BANK, as Trustee


                                        By       T. J. Foley
                                          --------------------------------------
                                                     Vice President

Attest:


    R. Lorenzen
- --------------------------------
    Senior Trust Officer
                                       74

STATE OF ARIZONA        )
                              )  ss.:
COUNTY OF MARICOPA      )


    On the 15th day of  January,  1998  before me  personally  came  Michael  V.
Palmeri, to me known, who, being by me duly sworn, did depose and say that he is
Treasurer of Arizona Public Service Company,  one of the corporations  described
in and which executed the foregoing  instrument;  that he knows the seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that she signed her name thereto by like authority.


                                        Linda G. Redman
                                        ---------------
                                        Linda G. Redman
                                        My Commission Expires Feb. 8, 1999
                                                  



STATE OF NEW YORK    )
                              )  ss.:
COUNTY OF NEW YORK   )


    On the 14th day of January,  1998 before me personally  came T. J. Foley, to
me  known,  who,  being by me duly  sworn,  did  depose  and say that he is Vice
President of The Chase Manhattan Bank, one of the corporations  described in and
which  executed  the  foregoing  instrument;  that  he  knows  the  seal of said
corporation;  that the seal affixed to said  instrument is such corporate  seal;
that  it was so  affixed  by  authority  of  the  Board  of  Directors  of  said
corporation; and that he signed his name thereto by like authority.



                                                    Annabelle DeLuca
                                                --------------------------------
                                                    Annabelle DeLuca
                                                Commission expires July 15, 1999
                                       75