Exhibit 4.10

================================================================================


                        PINNACLE WEST CAPITAL CORPORATION


                                       TO


                              THE BANK OF NEW YORK


                                     TRUSTEE


                                   ----------


                                    INDENTURE


                            DATED AS OF ______, 20__


                                   ----------


                       (For Senior Convertible Securities)


================================================================================

<PAGE>
                                   ----------

    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.
<PAGE>
                                TABLE OF CONTENTS

                                                                            Page
                                                                            ----

PREAMBLE.......................................................................1
Recitals of the Company........................................................1

                                   ARTICLE ONE

             DEFINITIONS AND OTHER PROVISIONS OF GENERAL APPLICATION

Section 101.  Definitions......................................................1
Section 102.  Compliance Certificates and Opinions.............................7
Section 103.  Form of Documents Delivered to Trustee...........................7
Section 104.  Acts of Holders; Record Dates....................................8
Section 105.  Notices, Etc., to Trustee and Company...........................10
Section 106.  Notice to Holders; Waiver.......................................10
Section 107.  Conflict with Trust Indenture Act...............................11
Section 108.  Effect of Headings and Table of Contents........................11
Section 109.  Successors and Assigns..........................................11
Section 110.  Separability Clause.............................................11
Section 111.  Benefits of Indenture...........................................11
Section 112.  Governing Law...................................................11
Section 113.  Legal Holidays..................................................11

                                   ARTICLE TWO

                                 SECURITY FORMS

Section 201.  Forms Generally.................................................12
Section 202.  Form of Face of Security........................................12
Section 203.  Form of Reverse of Security.....................................14
Section 204.  Form of Legend for Global Securities............................18
Section 205.  Form of Trustee's Certificate of Authentication.................18

                                  ARTICLE THREE

                                 THE SECURITIES

Section 301.  Amount Unlimited; Issuable in Series............................19
Section 302.  Denominations...................................................21
Section 303.  Execution, Authentication, Delivery and Dating..................22
Section 304.  Temporary Securities............................................23
Section 305.  Registration, Registration of Transfer and Exchange.............23
Section 306.  Mutilated, Destroyed, Lost and Stolen Securities................25

                                      -i-
<PAGE>
Section 307.  Payment of Interest; Interest Rights Preserved..................26
Section 308.  Persons Deemed Owners...........................................27
Section 309.  Cancellation....................................................27
Section 310.  Computation of Interest.........................................28
Section 311.  CUSIP Numbers...................................................28

                                  ARTICLE FOUR

                           SATISFACTION AND DISCHARGE

Section 401.  Satisfaction and Discharge of Indenture.........................28
Section 402.  Application of Trust Money......................................29

                                  ARTICLE FIVE

                                    REMEDIES

Section 501.  Events of Default...............................................29
Section 502.  Acceleration of Maturity; Rescission and Annulment..............31
Section 503.  Collection of Indebtedness and Suits for Enforcement by
                Trustee.......................................................32
Section 504.  Trustee May File Proofs of Claim................................32
Section 505.  Trustee May Enforce Claims Without Possession of Securities.....33
Section 506.  Application of Money Collected..................................33
Section 507.  Limitation on Suits.............................................33
Section 508.  Unconditional Right of Holders to Receive Principal, Premium,
                Interest and to Convert.......................................34
Section 509.  Restoration of Rights and Remedies..............................34
Section 510.  Rights and Remedies Cumulative..................................35
Section 511.  Delay or Omission Not Waiver....................................35
Section 512.  Control by Holders..............................................35
Section 513.  Waiver of Past Defaults.........................................35
Section 514.  Undertaking for Costs...........................................36
Section 515.  Waiver of Usury, Stay or Extension Laws.........................36

                                   ARTICLE SIX

                                   THE TRUSTEE

Section 601.  Certain Duties and Responsibilities.............................36
Section 602.  Notice of Defaults..............................................36
Section 603.  Certain Rights of Trustee.......................................37
Section 604.  Not Responsible for Recitals or Issuance of Securities..........38
Section 605.  May Hold Securities.............................................38
Section 606.  Money Held in Trust.............................................39
Section 607.  Compensation and Reimbursement..................................39
Section 608.  Conflicting Interests...........................................39

                                      -ii-
<PAGE>
Section 609.  Corporate Trustee Required; Eligibility.........................40
Section 610.  Resignation and Removal; Appointment of Successor...............40
Section 611.  Acceptance of Appointment by Successor..........................41
Section 612.  Merger, Conversion, Consolidation or Succession to Business.....42
Section 613.  Preferential Collection of Claims Against Company...............43
Section 614.  Appointment of Authenticating Agent.............................43

                                  ARTICLE SEVEN

                HOLDERS' LISTS AND REPORTS BY TRUSTEE AND COMPANY

Section 701.  Company to Furnish Trustee Names and Addresses of Holders.......44
Section 702.  Preservation of Information; Communications to Holders..........45
Section 703.  Reports by Trustee..............................................45
Section 704.  Reports by Company..............................................45

                                  ARTICLE EIGHT

              CONSOLIDATION, MERGER, CONVEYANCE, TRANSFER OR LEASE

Section 801.  Company May Consolidate, Etc., Only on Certain Terms............46
Section 802.  Successor Substituted...........................................47

                                  ARTICLE NINE

                             SUPPLEMENTAL INDENTURES

Section 901.  Supplemental Indentures Without Consent of Holders..............47
Section 902.  Supplemental Indentures With Consent of Holders.................48
Section 903.  Execution of Supplemental Indentures............................49
Section 904.  Effect of Supplemental Indentures...............................49
Section 905.  Conformity with Trust Indenture Act.............................49
Section 906.  Reference in Securities to Supplemental Indentures..............50

                                   ARTICLE TEN

                                    COVENANTS

Section 1001. Payment of Principal, Premium and Interest......................50
Section 1002. Maintenance of Office or Agency.................................50
Section 1003. Money for Securities Payments to Be Held in Trust...............50
Section 1004. Statement by Officers as to Default.............................52
Section 1005. Existence.......................................................52
Section 1006. Maintenance of Properties.......................................52
Section 1007. Payment of Taxes and Other Claims...............................52
Section 1008. Waiver of Certain Covenants.....................................52
Section 1009. Calculation of Original Issue Discount..........................53

                                     -iii-
<PAGE>
                                ARTICLE ELEVEN

                           REDEMPTION OF SECURITIES

Section 1101. Applicability of Article........................................53
Section 1102. Election to Redeem; Notice to Trustee...........................53
Section 1103. Selection by Trustee of Securities to Be Redeemed...............53
Section 1104. Notice of Redemption............................................54
Section 1105. Deposit of Redemption Price.....................................55
Section 1106. Securities Payable on Redemption Date...........................55
Section 1107. Securities Redeemed in Part.....................................56

                                ARTICLE TWELVE

                                 SINKING FUNDS

Section 1201. Applicability of Article........................................56
Section 1202. Satisfaction of Sinking Fund Payments with Securities...........56
Section 1203. Redemption of Securities for Sinking Fund.......................57

                               ARTICLE THIRTEEN

                      DEFEASANCE AND COVENANT DEFEASANCE

Section 1301. Company's Option to Effect Defeasance or Covenant Defeasance....57
Section 1302. Defeasance and Discharge........................................57
Section 1303. Covenant Defeasance.............................................58
Section 1304. Conditions to Defeasance or Covenant Defeasance.................58
Section 1305. Deposited Money and U.S. Government Obligations to Be Held
                in Trust; Miscellaneous Provisions............................60
Section 1306. Reinstatement...................................................61

                               ARTICLE FOURTEEN

                           CONVERSION OF SECURITIES

Section 1401. Conversion Privilege............................................61
Section 1402. Exercise of Conversion Privilege................................61
Section 1403. Fractions of Shares.............................................63
Section 1404. [Intentionally Left Blank]......................................63
Section 1405. Notice of Adjustments of Conversion Price.......................68
Section 1406. Notice of Certain Corporate Action..............................68
Section 1407. Company to Reserve Common Stock.................................69
Section 1408. Taxes on Conversions............................................69
Section 1409. Covenant as to Common Stock.....................................69
Section 1410. Cancellation of Converted Securities............................69
Section 1411. Provisions in Case of Consolidation, Merger of Sale
                of Assets.....................................................69
Section 1412. Trustee Adjustment Disclaimer...................................70

                                      -iv-
<PAGE>
     INDENTURE,  dated  as of  _______,  20__,  between  Pinnacle  West  Capital
Corporation,  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 Bank of New York, 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,
convertible 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;
<PAGE>
          (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  or  Associate  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.

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

                                       -2-
<PAGE>
shares of such  class  resulting  from all such  reclassifications  bears to the
total   number  of  shares  of  all  such  classes   resulting   from  all  such
reclassifications.

     "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 or Associate
Secretary, and delivered to the Trustee.

     "Corporate Trust Office" means the principal  corporate trust office of the
Trustee in the City of New York,  New York at which at any  particular  time its
corporate trust business shall be administered,  which office at the date hereof
is located at 101 Barclay Street, Floor 8 West, New York, New York 10286.

     "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.

     "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

                                       -3-
<PAGE>
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 installment 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  installment  of principal  becomes due and
payable as  therein or herein  provided,  whether at the Stated  Maturity  or by
declaration of acceleration, call for redemption or otherwise.

     "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
or Associate 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;

          (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-
<PAGE>
          (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 a Responsible
Officer of 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.

     "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.

                                       -5-
<PAGE>
     "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 any
vice president,  any assistant  secretary,  any assistant  treasurer,  any trust
officer  or  assistant  trust  officer,  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.

     "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
installment of principal thereof or interest  thereon,  means the date specified
in such  Security as the fixed date on which the  principal of such  Security or
such installment of principal or interest is due and payable.

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

                                       -6-
<PAGE>
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 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

                                       -7-
<PAGE>
with respect to the matters upon which his  certificate  or opinion is based are
erroneous.  Any such certificate or opinion of counsel may be based,  insofar as
it  relates  to  factual   matters,   upon  a  certificate  or  opinion  of,  or
representations  by, an officer or  officers  of the  Company  stating  that the
information  with respect to such factual  matters is in the  possession  of the
Company, unless such counsel knows, or in the exercise of reasonable care should
know,  that the certificate or opinion or  representations  with respect to such
matters are erroneous.

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

SECTION 104. ACTS OF HOLDERS; RECORD DATES.

     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 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 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

                                       -8-
<PAGE>
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,  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 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

                                       -9-
<PAGE>
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 Trust Administration, or

          (2)  the  Company  by the  Trustee  or by  any  Holder  shall  be
     sufficient  for  every  purpose  hereunder  (unless  otherwise  herein
     expressly  provided)  if in writing  and mailed,  first-class  postage
     prepaid,  to  the  Company  addressed  to it at  the  address  of  its
     principal  office  specified in the first paragraph of this instrument
     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 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.

                                      -10-
<PAGE>
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.

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 or the last date on which a Holder of  Securities  has
the right to convert its Securities, 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) or conversion of the Securities 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 or on
such last day for conversion.

                                      -11-
<PAGE>
                                   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 or
Associate  Secretary of the Company and  delivered to the Trustee at or prior to
the  delivery  of  the  Company  Order  contemplated  by  Section  303  for  the
authentication and delivery of such Securities.

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

SECTION 202. FORM OF FACE OF SECURITY.

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

                        PINNACLE WEST CAPITAL CORPORATION


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

No. ________                                                      $________
                                                                  CUSIP No._____

     Pinnacle  West  Capital  Corporation,  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 installment 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

                                      -12-
<PAGE>
(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  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.

                                        PINNACLE WEST CAPITAL CORPORATION


                                        By______________________________________

Attest:

_____________________________

                                      -13-
<PAGE>
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 December  ___,  2000 (herein  called the
"Indenture",  which  term  shall  have  the  meaning  assigned  to  it  in  such
instrument),  between the Company and The Bank of New York,  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 $ _______].

     Subject to and upon  compliance  with the provisions of the Indenture,  the
Holder of this Security is entitled, at his option, at any time [on or after the
opening of business on  _________,  20__ and] on or before the close of business
on  _________,  or in case  this  Security  or a portion  hereof  is called  for
redemption,  then in respect of this  Security or such portion  hereof until and
including,  but  (unless  the  Company  defaults  in making the payment due upon
redemption)  not after,  the close of business on the  Business Day prior to the
Redemption  Date,  to convert  this  Security  (or any portion of the  principal
amount hereof which is $1,000 or an integral multiple thereof), at the principal
amount hereof,  or of such portion,  into fully paid and  non-assessable  shares
(calculated  as to each  conversion  to the nearest  1/100 of a share) of Common
Stock of the Company at [a conversion  price equal to $___  aggregate  principal
amount of Securities  for each share of Common Stock -- the rate of __ shares of
Common Stock for each $1,000  principal amount of Securities] (or at the current
adjusted conversion  [price][rate] if an adjustment has been made as provided in
the Indenture) by surrender of this  Security,  duly endorsed or assigned to the
Company or in blank,  to the  Company  at its office or agency in  ____________,
accompanied  by written  notice to the Company that the Holder  hereof elects to
convert this Security,  or if less than the entire principal amount hereof is to
be converted,  the portion  hereof to be converted,  and, in case such surrender
shall be made during the period from the close of business on any Regular Record
Date next preceding any Interest Payment Date to the opening of business on such
Interest  Payment  Date  (unless  this  Security  or the portion  thereof  being
converted  has been  called for  redemption  on a  Redemption  Date  within such
period),  also accompanied by payment in _________ clearing house or other funds
acceptable  to the Company of an amount  equal to the  interest  payable on such
Interest  Payment  Date on the  principal  amount of this  Security  then  being
converted.  Subject to the aforesaid requirement for payment and, in the case of
a  conversion  from the  close of  business  on the  Regular  Record  Date  next
preceding any Interest  Payment Date to the opening of business on such Interest
Payment Date,  to the right of the Holder of this  Security (or any  Predecessor
Security) of record on such  Regular  Record Date to receive an  installment  of
interest  (with certain  exceptions  provided in the  Indenture),  no payment or
adjustment  is to be made on  conversion  for  interest  accrued  hereon  or for
dividends on the Common Stock  issued on  conversion.  No fractions of shares or
scrip representing fractions of shares

                                      -14-
<PAGE>
will be issued on conversion, but instead of any fractional interest the Company
shall  pay a cash  adjustment  as  provided  in the  Indenture.  The  conversion
[price][rate]  is  subject to  adjustment  as  provided  in the  Indenture.  [In
addition,  the  Indenture  provides  that in case of certain  consolidations  or
mergers to which the Company is a party or the transfer of substantially  all of
the assets of the Company,  the Indenture shall be amended,  without the consent
of any Holders of Securities,  so that this Security, if then outstanding,  will
be convertible thereafter,  during the period this Security shall be convertible
as specified above, only into the kind and amount of securities,  cash and other
property  receivable upon the  consolidation,  merger or transfer by a holder of
the number of shares of Common  Stock into which this  Security  might have been
converted immediately prior to such consolidation,  merger or transfer (assuming
such  holder of Common  Stock  failed to  exercise  any rights of  election  and
received  per share the kind and amount  received  per share by a  plurality  of
non-electing shares) [, assuming,  if such consolidation,  merger or transfer is
prior to _________,  20__,  that this Security were  convertible  at the time of
such consolidation,  merger or transfer at the initial conversion  [price][rate]
specified  above as adjusted from  _________,  20__ to such time pursuant to the
Indenture]].

     [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 ..........,  20___], 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

                                      -15-
<PAGE>
the  principal  amount)  set forth in the table  below,  and (2) at any time [IF
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 Price For
                                 Redemption Through       Redemption Otherwise
                                  Operation 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,  converted  pursuant  to the  Indenture  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].]

     In the event of [IF APPLICABLE, INSERT _ redemption or] conversion of this
Security in part only, a new Security or Securities of this series and of like
tenor for the [IF APPLICABLE, INSERT _ unredeemed or] unconverted 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.]

                                      -16-
<PAGE>
     [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 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 or to convert this Security as provided in the Indenture.

                                      -17-
<PAGE>
     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 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.

                                      -18-
<PAGE>
                                                           THE BANK OF NEW YORK,
                                                                      AS TRUSTEE

                                               By_______________________________
                                                            AUTHORIZED SIGNATORY

                                 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, 1107 or 1402 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;

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

                                      -19-
<PAGE>
          (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 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

                                      -20-
<PAGE>
     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 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;

          (20) the price or rate at which  shares of Common Stock will be
     delivered  upon  conversion  of  the  Securities  of the  series,  any
     circumstances  in which such price or rate will be  adjusted,  and any
     addition to or change in article Fifteen with respect to Securities of
     the series; and

          (21) 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 or Associate  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

                                      -21-
<PAGE>
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  or Associate  Secretaries.  The
signature of any of these officers on the Securities may be manual or facsimile.

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

     At any time and from time to time after the  execution and delivery of this
Indenture,  the  Company may deliver  Securities  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, 301 and
1402,  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.

                                      -22-
<PAGE>
     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  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  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. 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

                                      -23-
<PAGE>
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 other governmental  charge that may be imposed in connection
with any  registration  of  transfer  or  exchange  of  Securities,  other  than
exchanges pursuant to Section 304, 906, 1107 or 1402 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

                                      -24-
<PAGE>
     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.

          (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,  1107 or 1402 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.

                                      -25-
<PAGE>
     Every new Security of any series issued pursuant to this Section in lieu of
any destroyed,  lost or stolen Security shall constitute an original  additional
contractual  obligation of the Company,  whether or not the  destroyed,  lost or
stolen  Security  shall be at any  time  enforceable  by  anyone,  and  shall be
entitled to all the benefits of this Indenture equally and proportionately  with
any and all other Securities of that series duly issued hereunder.

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

SECTION 307. PAYMENT OF INTEREST; INTEREST RIGHTS PRESERVED.

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

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

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

                                      -26-
<PAGE>
     less than 10 days prior to such  Special  Record  Date.  Notice of the
     proposed  payment of such  Defaulted  Interest and the Special  Record
     Date therefor having been so mailed,  such Defaulted Interest shall be
     paid to the Persons in whose names the  Securities  of such series (or
     their respective  Predecessor  Securities) are registered at the close
     of business on such Special Record Date and shall no longer be payable
     pursuant to the following Clause (2).

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

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

     In the case of any Security which is converted from the close of business
on any Regular Record Date to the opening of business on the next succeeding
Interest Payment Date (other than any Security whose Maturity is prior to such
Interest Payment Date), interest whose Stated Maturity is on such Interest
Payment Date shall be payable on such Interest Payment Date notwithstanding such
conversion, and such interest (whether or not punctually paid or duly provided
for) shall be paid to the Person in whose name that Security (or one or more
Predecessor Securities) is registered at the close of business on such Regular
Record Date. Except as otherwise expressly provided in the immediately preceding
sentence, in the case of any Security which is converted, interest whose Stated
Maturity is after the date of conversion of such Security shall not be payable.

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,   conversion,
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  Company  has not issued  and sold,  and all
Securities  so  delivered  shall  be  promptly  cancelled  by  the  Trustee.  No
Securities shall be

                                      -27-
<PAGE>
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.  The Company shall promptly notify
the Trustee of any change in the CUSIP numbers.

                                  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 conversion,  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

                                      -28-
<PAGE>
                    (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  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.  All
moneys deposited with the Trustee pursuant to Section 401 (and held by it or any
Paying  Agent) for the payment of  Securities  subsequently  converted  shall be
returned to the Company upon Company Request.

                                      -29-
<PAGE>
                                  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 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,  reorganization  or other similar law or of any other case

                                      -30-
<PAGE>
     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  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,

                                      -31-
<PAGE>
               (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

          (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.

                                      -32-
<PAGE>
SECTION 504. TRUSTEE MAY FILE PROOFS OF CLAIM.

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

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

                                      -33-
<PAGE>
     THIRD:  To the payment of the balance,  if any, to the Company or any other
Person or Persons legally entitled thereto.

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  indemnity
     satisfactory  to it 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,
             INTEREST AND TO CONVERT.

     Notwithstanding  any other provision in this  Indenture,  the Holder of any
Security shall have the right, which is absolute and  unconditional,  to receive
payment of the  principal  of and any  premium  and  (subject  to  Section  307)
interest on such Security on the respective Stated Maturities  expressed in such
Security (or, in the case of redemption,  on the Redemption Date) and to convert
such Security in accordance  herewith and to institute suit for the  enforcement
of any such payment and right to convert,  and such rights shall not be impaired
without the consent of such Holder.

                                      -34-
<PAGE>
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.

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 proceedings so directed would involve the
     Trustee in personal liability.

                                      -35-
<PAGE>
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.

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

                                      -36-
<PAGE>
grounds for believing that repayment of such funds or adequate indemnity against
such risk or liability is not  reasonably  assured to it. Whether or not therein
expressly so provided, every provision of this Indenture relating to the conduct
or affecting  the  liability of or affording  protection to the Trustee shall be
subject to the provisions of this Section.

SECTION 602. NOTICE OF DEFAULTS.

     If a default occurs hereunder with respect to Securities of any series, the
Trustee  shall give the  Holders of  Securities  of such  series  notice of such
default as and to the extent  provided  by the Trust  Indenture  Act;  PROVIDED,
HOWEVER,  that in the case of any default of the character  specified in Section
501(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  conclusively  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;

          (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  security or indemnity
     satisfactory to it against the costs,  expenses and liabilities  which
     might be incurred by it in compliance with such request or direction;

                                      -37-
<PAGE>
          (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;

          (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;

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

          (9) the Trustee shall not be deemed to have notice of any default
     or Event of Default  unless a  Responsible  Officer of the Trustee has
     actual  knowledge  thereof or unless written notice of any event which
     is in fact such a default is received by the Trustee at the  Corporate
     Officer of the Trustee,  and such notice references the Securities and
     this Indenture;

          (10) the rights, privileges, protections, immunities and benefits
     given to the Trustee, including,  without limitation, its rights to be
     indemnified, are extended to, and shall be enforceable by, the Trustee
     in each of its capacities  hereunder,  [and each agent,  custodian and
     other Person employed to act hereunder]; and

          (11)  the  Trustee  may  request  that  the  Company  deliver  an
     Officers'  Certificate  setting forth the names of individuals  and/or
     titles of officers  authorized at such time to take specified  actions
     pursuant to this Indenture,  which Officers' Certificate may be signed
     by any person authorized to sign an Officers'  Certificate,  including
     any  person  specified  as  so  authorized  in  any  such  certificate
     previously delivered and not superseded.

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.

                                      -38-
<PAGE>
SECTION 605. MAY HOLD SECURITIES.

     The Trustee,  any  Authenticating  Agent,  any Paying  Agent,  any Security
Registrar  or any other agent of the  Company,  in its  individual  or any other
capacity, may become the owner or pledgee of Securities and, subject to Sections
608 and 613, may  otherwise  deal with the Company with the same rights it would
have if it were  not  Trustee,  Authenticating  Agent,  Paying  Agent,  Security
Registrar or such other agent.

SECTION 606. MONEY HELD IN TRUST.

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

                                      -39-
<PAGE>
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.

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, at the expense of the Company,
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

                                      -40-
<PAGE>
          (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.

     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

                                      -41-
<PAGE>
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.

     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 substantially all the corporate trust business

                                      -42-
<PAGE>
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 original issue
and upon  exchange,  registration  of transfer,  partial  conversion  or partial
redemption  thereof or pursuant to Section 306, and Securities so  authenticated
shall be  entitled  to the  benefits  of this  Indenture  and shall be valid and
obligatory  for all  purposes  as if  authenticated  by the  Trustee  hereunder.
Wherever  reference is made in this Indenture to the authentication and delivery
of  Securities by the Trustee or the Trustee's  certificate  of  authentication,
such reference shall be deemed to include  authentication and delivery on behalf
of the Trustee by an  Authenticating  Agent and a certificate of  authentication
executed  on  behalf  of  the   Trustee  by  an   Authenticating   Agent.   Each
Authenticating  Agent shall be  acceptable to the Company and shall at all times
be a  corporation  organized  and doing  business  under the laws of the  United
States of America,  any State  thereof or the District of  Columbia,  authorized
under such laws to act as  Authenticating  Agent,  having a combined capital and
surplus of not less than  $50,000,000  and subject to supervision or examination
by Federal or State authority. If such Authenticating Agent publishes reports of
condition  at least  annually,  pursuant to law or to the  requirements  of said
supervising or examining  authority,  then for the purposes of this Section, the
combined capital and surplus of such Authenticating  Agent shall be deemed to be
its  combined  capital  and  surplus as set forth in its most  recent  report of
condition so published. If at any time an Authenticating Agent shall cease to be
eligible in accordance with the provisions of this Section,  such Authenticating
Agent shall resign  immediately  in the manner and with the effect  specified in
this Section.

     Any  corporation  into  which an  Authenticating  Agent  may be  merged  or
converted or with which it may be  consolidated,  or any  corporation  resulting
from any merger,  conversion or consolidation to which such Authenticating Agent
shall be a party, or any corporation  succeeding to all or substantially  all of
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

                                      -43-
<PAGE>
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:

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

                                                           THE BANK OF NEW YORK,
                                                                      AS TRUSTEE


                                                By._____________________________
                                                         AS AUTHENTICATING AGENT



                                                By _____________________________
                                                              AUTHORIZED OFFICER



                                 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

                                      -44-
<PAGE>
          (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.

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 and of any delisting thereof.

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.

                                      -45-
<PAGE>
     Except as otherwise  required by the Trust  Indenture  Act, and except with
respect to any Officers'  Certificate  provided under Section 1004,  delivery of
such  reports,  information  and  documents to the Trustee is for  informational
purposes  only  and  the  Trustee's   receipt  of  such  shall  not   constitute
constructive  notice of any information  contained  therein or determinable from
information  contained therein,  including the Company's  compliance with any of
its covenants hereunder (as to which the Trustee is entitled to rely exclusively
on Officers' Certificates).

                                 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:

          (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  and  shall  have  provided  for  conversion   rights  in
     accordance with Article Fourteen;

          (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

                                      -46-
<PAGE>
          (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 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

                                      -47-
<PAGE>
          (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; or

          (10) to make  provision  with  respect  to  conversion  rights of
     Holders pursuant to the requirements of Article Fourteen.

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
     installment  of principal of or interest on, any  Security,  or reduce
     the principal  amount  thereof or the rate of interest  thereon or any
     premium payable upon the redemption  thereof,  or reduce the amount of
     the  principal  of an Original  Issue  Discount  Security or any other
     Security  which  would  be  due  and  payable  upon a  declaration  of

                                      -48-
<PAGE>
     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 adversely affect the right to convert any Security as
     provided in this Indenture (except as permitted herein), 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 receive, and (subject to
Section  601) shall be fully  protected in relying  upon,  an Opinion of Counsel
stating that the  execution of such  supplemental  indenture  is  authorized  or
permitted by this  Indenture.  The Trustee  may, but shall not be obligated  to,
enter into any such  supplemental  indenture  which  affects the  Trustee's  own
rights, duties or immunities under this Indenture or otherwise.

SECTION 904. EFFECT OF SUPPLEMENTAL INDENTURES.

     Upon the execution of any supplemental  indenture under this Article,  this
Indenture  shall be  modified in  accordance  therewith,  and such  supplemental

                                      -49-
<PAGE>
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.

                                   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,  where  Securities may be surrendered
for  conversion  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

                                      -50-
<PAGE>
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 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

                                      -51-
<PAGE>
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 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.

                                      -52-
<PAGE>
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 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.

     Unless otherwise specified as contemplated by Section 301, 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

                                      -53-
<PAGE>
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.

     If any Security selected for partial redemption is converted in part before
termination of the conversion  right with respect to the portion of the Security
so selected,  the converted  portion of such Security shall be deemed (so far as
may be) to be the portion  selected for redemption.  Securities  which have been
converted  during a selection of Securities  to be redeemed  shall be treated by
the Trustee as Outstanding for the purpose of such selection.

     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 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,

                                      -54-
<PAGE>
          (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,

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

          (7) the conversion price or rate, as the case may be, the date on
     which  the  right  to  convert  the  Securities  to be  redeemed  will
     terminate  and the  place  or  places  where  such  Securities  may be
     surrendered for conversion.

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

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 other than any Securities  called for redemption
on that date which have been converted prior to the date of such deposit.

     If any Security  called for  redemption is converted,  any money  deposited
with the Trustee or with any Paying Agent or so segregated and held in trust for
the  redemption  of such Security  shall  (subject to any right of the Holder of
such Security or any Predecessor Security to receive interest as provided in the
last  paragraph of Section 307) be paid to the Company upon Company  Request or,
if then held by the Company, shall be discharged from such trust.

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

                                      -55-
<PAGE>
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.

                                 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  converted pursuant  to this Indenture or 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

                                      -56-
<PAGE>
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.

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 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 and any rights of

                                      -57-
<PAGE>
such Holder to convert such  Securities  as provided  herein,  (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 and with respect to
any rights to convert  such  Securities  as  provided  herein,  (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  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

                                      -58-
<PAGE>
     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 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.

                                      -59-
<PAGE>
          (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.

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.

                                      -60-
<PAGE>
     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.

                                ARTICLE FOURTEEN

                            CONVERSION OF SECURITIES

SECTION 1401. CONVERSION PRIVILEGE.

     Subject to and upon compliance with the provisions of this Article,  at the
option of the Holder  thereof,  Securities  of any series or any  portion of the
principal  amount thereof which is $1,000 or an integral  multiple of $1,000 may
be converted at the principal amount thereof,  or of such portion thereof,  into
fully paid and  nonassessable  shares  (calculated as to each  conversion to the
nearest 1/100 of a share) of Common Stock of the Company, in accordance with the
terms of such  series of  Securities  and  (except  as  otherwise  specified  as
contemplated by Section 301) in accordance with this Article. In case a Security
or portion thereof is called for redemption, such conversion right in respect of
the  Security or portion so called  shall expire at the close of business on the
Business Day which is  immediately  preceding the  Redemption  Date,  unless the
Company defaults in making the payment due upon redemption.

     The  price at  which  shares  of  Common  Stock  shall  be  delivered  upon
conversion,  which shall be specified as  contemplated  by Section 301, shall be
referred  to herein as the  "conversion  price." The  conversion  price shall be
adjusted in certain instances as specified as provided in Section 301.

                                      -61-
<PAGE>
SECTION 1402. EXERCISE OF CONVERSION PRIVILEGE.

     In order to exercise the conversion privilege, the Holder of any Security
to be converted shall surrender such Security, duly endorsed or assigned to the
Company or in blank, at any office or agency of the Company maintained for that
purpose pursuant to Section 1002, accompanied by written notice to the Company
at such office or agency that the Holder elects to convert such Security or, if
less than the entire principal amount thereof is to be converted, the portion
thereof to be converted. Securities surrendered for conversion during the period
from the close of business on any Regular Record Date next preceding any
Interest Payment Date to the opening of business on such Interest Payment Date
shall be accompanied by payment in funds reasonably acceptable to the Company of
an amount equal to the interest payable on such Interest Payment Date on the
principal amount of Securities being surrendered for conversion (with similar
provision to be made for bearer Securities).

     The interest so payable on such Interest Payment Date in respect of any
Security (or portion thereof, as the case may be) that has not been called for
redemption on a Redemption Date with the consequence of termination of the
conversion right as aforesaid, which Security (or portion thereof, as the case
may be) is surrendered for conversion during the period from the close of
business on any Regular Record Date next preceding any Interest Payment Date to
the opening of business on such Interest Payment Date, shall be paid to the
Holder of such Security as of such Regular Record Date. Except as provided in
this paragraph and subject to the last paragraph of Section 307, no cash payment
or adjustment shall be made upon any conversion on account of any interest
accrued from the Interest Payment Date next preceding the conversion date, in
respect of any Security (or part thereof, as the case may be) surrendered for
conversion, or on account of any dividends on the Common Stock issued upon
conversion. The Company's delivery to the Holder of the number of shares of
Common Stock (and cash in lieu of fractions thereof, as provided in this
Indenture) into which a Security is convertible will be deemed to satisfy the
Company's obligation to pay the principal amount of the Security.

     Securities shall be deemed to have been converted  immediately prior to the
close of business on the day of surrender of such  Securities  for conversion in
accordance  with the  foregoing  provisions,  and at such time the rights of the
Holders of such  Securities  as Holders  shall cease,  and the Person or Persons
entitled to receive the Common Stock issuable upon  conversion  shall be treated

                                      -62-
<PAGE>
for all  purposes as the record  holder or holders of such Common  Stock at such
time. As promptly as practicable  on or after the  conversion  date, the Company
shall  issue and  shall  deliver  at such  office  or  agency a  certificate  or
certificates  for the  number  of full  shares  of Common  Stock  issuable  upon
conversion,  together  with  payment  in lieu of any  fraction  of a  share,  as
provided in Section 1403.

     In the case of any  Security  which is  converted  in part only,  upon such
conversion  the Company  shall execute and the Trustee  shall  authenticate  and
deliver to the Holder thereof,  at the expense of the Company, a new Security or
Securities of authorized  denominations  in aggregate  principal amount equal to
the unconverted portion of the principal amount of such Security.

SECTION 1403. FRACTIONS OF SHARES.

     No  fractional  shares of Common Stock shall be issued upon  conversion  of
Securities. If more than one Security shall be surrendered for conversion at one
time by the same Holder,  the number of full shares which shall be issuable upon
conversion  thereof  shall be computed on the basis of the  aggregate  principal
amount of the Securities (or specified portions thereof) so surrendered. Instead
of any fractional  share of Common Stock which would  otherwise be issuable upon
conversion of any Security or Securities (or specified  portions  thereof),  the
Company  shall pay a cash  adjustment  in respect of such  fraction in an amount
equal to the same  fraction of the closing  price per share of Common  Stock (as
determined in the manner described in the second sentence of Section 1404(8)) at
the close of business on the day of conversion.

SECTION 1404. [INTENTIONALLY LEFT BLANK.]

                                      -63-
<PAGE>

SECTION 1405. NOTICE OF ADJUSTMENTS OF CONVERSION PRICE.

     Whenever the conversion price is adjusted as herein provided:

          (1) the  Company  shall  compute  the  adjusted  conversion  price  in
     accordance herewith and shall prepare a certificate signed by the Treasurer
     of the Company,  or other  applicable  officer,  setting forth the adjusted
     conversion price and showing in reasonable detail the facts upon which such
     adjustment is based, and such certificate  shall forthwith be filed at each
     office or agency  maintained  for the purpose of  conversion  of Securities
     pursuant to Section 1002; and

          (2) a notice stating that the conversion  price has been adjusted
     and setting  forth the adjusted  conversion  price shall  forthwith be
     required, and as soon as practicable after it is required, such notice
     shall be mailed by the Company to all Holders at their last  addresses
     as they shall appear in the Security Register.

SECTION 1406. NOTICE OF CERTAIN CORPORATE ACTION.

     In case:

          (1) the Company shall  declare a dividend (or any other  distribution)
     on its Common Stock such that any adjustment to the conversion  price would
     be required pursuant to this Indenture;

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

          (3) of any  reclassification  of the Common  Stock of the Company
     (other than a subdivision or combination of its outstanding  shares of
     Common Stock),  or of any consolidation or merger to which the Company
     is a party and for which approval of any  shareholders  of the Company
     is required, or of the sale or transfer of all or substantially all of
     the assets of the Company; or

                                   -64-
<PAGE>
          (4) of the voluntary or involuntary  dissolution,  liquidation or
     winding up of the Company;

then the Company shall cause to be filed at each office or agency maintained for
the purpose of  conversion of  Securities  pursuant to Section  1002,  and shall
cause to be mailed to all Holders at their last  addresses  as they shall appear
in the  Security  Register or as  otherwise  allowed by Section 106, at least 10
days (or five days in any case  specified  in clause (1) or (2) above)  prior to
the applicable record or effective date hereinafter  specified, a notice stating
(x) the date on which a record is to be taken for the purpose of such  dividend,
distribution,  rights or warrants,  or, if a record is not to be taken, the date
as of which the  holders  of  Common  Stock of  record  to be  entitled  to such
dividend, distribution, rights or warrants are to be determined, or (y) the date
on  which  such   reclassification,   consolidation,   merger,  sale,  transfer,
dissolution,  liquidation or winding up is expected to become effective, and the
date as of which it is expected  that holders of Common Stock of record shall be
entitled to exchange their shares of Common Stock for securities,  cash or other
property deliverable upon such  reclassification,  consolidation,  merger, sale,
transfer, dissolution, liquidation or winding up.

     The Company shall cause to be filed at each office or agency maintained for
the purpose of  conversion of  Securities  pursuant to Section  1002,  and shall
cause to be provided to all Holders in  accordance  with Section 106,  notice of
any tender offer by the Company or any  subsidiary of the Company for all or any
portion  of the  Common  Stock at or about the time  that such  notice of tender
offer is provided to the public generally.

SECTION 1407. COMPANY TO RESERVE COMMON STOCK.

     The  Company  shall at all  times  reserve  and keep  available,  free from
preemptive  rights,  out of its  authorized but unissued  Common Stock,  for the
purpose of effecting the conversion of Securities,  the full number of shares of
Common Stock then issuable upon the conversion of all outstanding Securities.

SECTION 1408. TAXES ON CONVERSIONS.

     The  Company  will pay any and all taxes  that may be payable in respect of
the issue or  delivery of shares of Common  Stock on  conversion  of  Securities
pursuant  hereto.  The Company  shall not,  however,  be required to pay any tax
which may be  payable  in  respect  of any  transfer  involved  in the issue and
delivery  of shares of Common  Stock in a name  other than that of the Holder of
the Security or Securities to be converted,  and no such issue or delivery shall
be made  unless  and  until the  Person  requesting  such  issue has paid to the
Company the amount of any such tax, or has  established to the  satisfaction  of
the Company that such tax has been paid.

SECTION 1409. COVENANT AS TO COMMON STOCK.

     The Company  covenants  that all shares of Common Stock which may be issued
upon  conversion of Securities  will upon issue be fully paid and  nonassessable
and,  except as provided in Section 1408, the Company will pay all taxes,  liens
and charges with respect to the issue thereof.

                                   -65-
<PAGE>
SECTION 1410. CANCELLATION OF CONVERTED SECURITIES.

     All Securities  delivered for conversion  shall be delivered to the Trustee
to be cancelled by or at the  direction of the Trustee,  which shall  dispose of
the same as provided in Section 309.

SECTION 1411. PROVISIONS IN CASE OF CONSOLIDATION, MERGER OF SALE OF ASSETS.

     In case of any  consolidation of the Company with, or merger of the Company
into,  any other Person,  any merger of another  Person into the Company  (other
than a  merger  which  does  not  result  in any  reclassification,  conversion,
exchange or cancellation  of Outstanding  shares of Common Stock of the Company)
or any sale or transfer or conveyance of all or substantially  all of the assets
of the Company,  the Person formed by such  consolidation or resulting from such
merger or which  acquires  such assets,  as the case may be,  shall  execute and
deliver to the Trustee a  supplemental  indenture  providing  that the Holder of
each  Security  then  outstanding  shall have the right  thereafter,  during the
period such  Security  shall be  convertible  as specified in Section  1401,  to
convert  such  Security  only into the kind and amount of  securities,  cash and
other property receivable upon such  consolidation,  merger, sale or transfer or
conveyance  by a holder of the number of shares of Common  Stock of the  Company
into which such Security  might have been  converted  immediately  prior to such
consolidation,  merger, sale or transfer or conveyance,  assuming such holder of
Common  Stock  of the  Company  (i) is  not a  Person  with  which  the  Company
consolidated  or into which the Company  merged or which merged into the Company
or to which such sale or  transfer  was made,  as the case may be  ("constituent
Person"),  or an Affiliate of a  constituent  Person and (ii) failed to exercise
his rights of election, if any, as to the kind or amount of securities, cash and
other property receivable upon such  consolidation,  merger, sale or transfer or
conveyance  (provided that if the kind or amount of  securities,  cash and other
property receivable upon such consolidation, merger, sale or transfer is not the
same for each share of Common  Stock of the Company  held  immediately  prior to
such consolidation, merger, sale or transfer by others than a constituent Person
or an  Affiliate  thereof and in respect of which such rights of election  shall
not have been  exercised  ("nonelecting  share"),  then for the  purpose of this
Section the kind and amount of securities,  cash and other  property  receivable
upon such  consolidation,  merger,  sale or transfer by each  nonelecting  share
shall be deemed to be the kind and amount so receivable per share by a plurality
of the  nonelecting  shares).  Such  supplemental  indenture  shall  provide for
adjustments  which,  for  events  subsequent  to  the  effective  date  of  such
supplemental  indenture,  shall be as nearly equivalent as may be practicable to
the  adjustments  provided for in this  Indenture  applicable to the  Securities
immediately prior to the consolidation, merger, sale of, transfer or conveyance.
The  above  provisions  of this  Section  shall  similarly  apply to  successive
consolidations,  mergers, sales or transfers.  Notice of the execution of such a
supplemental  indenture  shall be given by the  Company  to the  Holder  of each
Security as provided in Section 106 promptly upon such execution.

     The  Company  shall be solely  responsible  for  performing  the duties and
responsibilities  contained  in this  Article  and  the  Trustee  shall  have no
responsibility therefor.

SECTION 1412. TRUSTEE ADJUSTMENT DISCLAIMER.

     The Trustee has no duty to determine  when an adjustment of the  conversion
price  should be made,  how it should be made or what it should be. The  Trustee
shall not be accountable for and makes no  representation  as to the validity or
value

                                   -66-
<PAGE>
of any securities or assets issued upon  conversion of  Securities.  The Trustee
shall not be responsible  for the Company's  failure to comply with this Article
Fourteen.  Each Conversion  Agent (other than the Company or an Affiliate of the
Company) shall have the same protection under this Section 1412 as the Trustee.

                                 ---------

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

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

                                        PINNACLE WEST CAPITAL CORPORATION


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



                                        THE BANK OF NEW YORK, as Trustee


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

                                   -67-
<PAGE>
STATE OF ARIZONA           )
                           ) ss:
COUNTY OF MARICOPA         )

     On  the  __th  day  of  ___________,   20__,   before  me  personally  came
_______________,  to me known,  who, being by me duly sworn,  did depose and say
that [he/she] is _________________ of Pinnacle West Capital Corporation,  one of
the corporations described in and which executed the foregoing instrument;  that
[he/she]  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/she] signed [his/her] name
thereto by like authority.


                                        ----------------------------------------
                                        Commission Expires:





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

     On  the  __th  day  of  __________,   20__,   before  me  personally   came
____________,  to me known, who, being by me duly sworn, did depose and say that
[he/she]  is  ______________  of The Bank of New York,  one of the  corporations
described in and which  executed the foregoing  instrument;  that [he/she] 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/she]  signed  [his/her]  name  thereto by like
authority.


                                        ----------------------------------------
                                        Commission Expires:

                                   -68-