UNISOURCE ENERGY CORP
8-A12B, 1999-03-29
ELECTRIC SERVICES
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                                       FORM 8-A

                          SECURITIES AND EXCHANGE COMMISSION
                                Washington, D.C. 20549

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

                  FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES
                        PURSUANT TO SECTION 12(b) OR (g) OF THE
                           SECURITIES EXCHANGE ACT OF 1934

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

                             UNISOURCE ENERGY CORPORATION
                (Exact name of registrant as specified in its charter)


                Arizona                1-5924                 86-0786732
      (State of incorporation     (Commission File        (I.R.S. Employer
          or organization)             Number)           Identification No.)

                             UniSource Energy Corporation
                                220 West Sixth Street
                                Tucson, Arizona  85701
               (Address of principal executive offices, including zip code)


             Securities to be registered pursuant to Section 12(b) of the
          Act:

                 Title of each class        Name of each exchange on which
                 to be so registered            each class is to be so
                                                      registered

                 Rights to purchase            New York Stock Exchange
              Series X Preferred Stock             Pacific Exchange


             If this form relates to the registration of a class of
          securities pursuant to Section 12(b) of the Exchange Act and is
          effective pursuant to General Instruction A.(c), check the
          following box.     [X]

             If this form relates to the registration of a class of
          securities pursuant to Section 12(g) of the Exchange Act and is
          effective pursuant to General Instruction A.(d), check the
          following box.     [ ]

             Securities Act registration statement file number to which
          this form relates:  None.
                              ----

             Securities to be registered pursuant to Section 12(g) of the
          Act:  None.
                ----

             The Commission is respectfully requested to send copies of all
          notices, orders and communications to:


                   Dennis R. Nelson, Esq.       J. Anthony Terrell, Esq.
                UniSource Energy Corporation       John T. Hood, Esq.
                    220 West Sixth Street       Thelen Reid & Priest LLP
                   Tucson, Arizona  85701          40 West 57th Street
                                                New York, New York  10019

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


     <PAGE>

                    INFORMATION REQUIRED IN REGISTRATION STATEMENT


          Item 1.   Description of Registrant's Securities to be
                    --------------------------------------------
                    Registered.
                    ----------

          General

               On March 5, 1999, UniSource Energy Corporation ("UniSource
          Energy") adopted a shareholder rights.  Under that plan,
          UniSource Energy will grant one preferred share purchase right
          ("Right") on each outstanding share of Common Stock to holders of
          Common Stock outstanding on April 1, 1999 or issued thereafter. 
          The description and terms of the Rights are set forth in the
          Rights Agreement, dated as of March 5, 1999 (the "Rights
          Agreement"), between UniSource Energy and The Bank of New York,
          as Right Agent.  The Rights Agreement is incorporated by
          reference and attached as an exhibit.  The following statements
          are qualified in their entirety reference to the Rights
          Agreement.  Certain of the capitalized terms used in the
          following description have the meanings set forth in the Rights
          Agreement.

               Each Right will entitle the registered holder, subject to
          regulatory approvals and other specified conditions, to purchase
          one ten-thousandth of a share of Preferred Stock, Series X,
          without par value, of UniSource Energy (the "Series X Preferred
          Stock"), at a purchase price of $50.00 (the "Purchase Price"). 
          The Rights will be exercisable only if a person or group

               .    acquires 15% or more of the outstanding shares of
                    Common Stock or 

               .    commences a tender or exchange offer, the consummation
                    of which would result in the beneficial ownership by a
                    person or group of 15% or more of the outstanding
                    shares of Common Stock.  

               Until that time the Rights will be evidenced by and will
          trade with the shares of Common Stock.  The Rights will expire on
          March 31, 2009 unless UniSource Energy first redeems or exchanges
          them, in each case as described below.

               The purchase of stock Pursuant to the Rights may be subject
          to regulatory approval and other specified conditions.  Under no
          circumstance will the person or group that acquired 15% of the
          Common Stock be entitled to exercise Rights.

          "Flip-in"

               If any person or group acquires 15% or more of the
          outstanding shares of Common Stock, each Right will entitle its
          holder to purchase that number of shares of Common Stock or, at
          the option of UniSource Energy, Preferred Stock,  which has a
          market value at that time of twice the Purchase Price.


                                     -1-
     <PAGE>


          "Flip-over"

               In addition, in the event that any person or group has
          acquired 15% or more of the outstanding shares of Common Stock
          and UniSource Energy 

                    .    consolidates or merges with or into, or 
                    .    sells 50% or more of its assets or earning power
                         to, 

          any person or group, each Right would instead entitle its holder
          to purchase the acquiring company's common shares having a market
          value of twice the Purchase Price.

          Exchange  

               If a person or group acquires more than 15% but less than
          50% of the outstanding shares of Common Stock, UniSource Energy
          may exchange each outstanding Right for one share of Common Stock
          or cash, securities or other assets having a value equal to the
          market value of one share of Common Stock.  That exchange may be
          subject to regulatory approval.

          Redemption  

               UniSource Energy may redeem the Rights, at a redemption
          price of $0.001 per Right, at any time until any person or group
          has acquired 15% or more of the outstanding shares of Common
          Stock.  

          Certain Adjustments  

               The Purchase Price, the amount and type of securities
          covered by each Right and the number of Rights outstanding will
          be adjusted to prevent dilution 

                    .    in the event of a stock dividend on, or a
                         subdivision, combination or reclassification of,
                         the Preferred Stock, 

                    .    if holders of the Preferred Stock are granted
                         certain rights, options or warrants to subscribe
                         for Preferred Stock or securities convertible into
                         Preferred Stock or equivalent preferred shares at
                         less than the current market price of the
                         Preferred Stock, or 

                    .    upon the distribution to holders of the Preferred
                         Stock of evidences of indebtedness or assets
                         (excluding regular quarterly cash dividends) or of
                         subscription rights or warrants (other than those
                         referred to above).

               With certain exceptions, no adjustments in the Purchase
          Price will be made until cumulative adjustments amount to a least
          1% of the Purchase Price.  UniSource Energy will not issue
          fractional shares of Series X Preferred Stock other than in


                                      -2-
     <PAGE>


          integral multiples of one ten-thousandth of a share.  Instead,
          UniSource Energy will make an adjustment in cash based on the
          market price of the Series X Preferred Stock on the last trading
          date prior to the date of exercise.

          Amounts Outstanding  

               UniSource Energy will distribute one Right to shareholders
          of UniSource Energy for each share of Common Stock owned of
          record by them at the close of business on April 1, 1999.  Until
          the earliest of 

                    .    such time as any person or group acquires 15% or
                         more of the outstanding shares of Common Stock, 

                    .    March 31, 2009 or 

                    .    the redemption of the Rights, 

          UniSource Energy will issue one Right with each share of Common
          Stock that is issued after April 1, 1999 so that all shares of
          Common Stock will have attached Rights.  UniSource Energy has
          initially authorized and reserved 10,000 shares of Preferred
          Stock for issuance upon exercise of the Rights.  The authorized
          capital stock of UniSource Energy presently consists of
          76,000,000 shares, consisting of 75,000,000 shares of Common
          Stock without par value and 1,000,000 shares of Preferred Stock
          without par value.  As of March 23, 1998, 32,294,998 shares of
          Common Stock were outstanding and no shares of Preferred Stock
          were outstanding.

          Amendment

               UniSource Energy may amend the Rights Agreement in any
          respect until any person or group has acquired 15% or more of the
          outstanding shares of Common Stock.  Thereafter, UniSource Energy
          may amend the Rights Agreement in any manner which will not
          adversely  affect the holders of the Rights in any material
          respect.




          Item 2.   Exhibits.
                    --------

               Exhibit        Description
               -------        -----------

                 1.      Rights Agreement, dated as of March 5, 1999,
                         between UniSource Energy Corporation and The Bank
                         of New York


                                     -3-
     <PAGE>


                                      SIGNATURE

               Pursuant to the requirements of Section 12 of the
          Securities Exchange Act of 1934, the registrant has duly caused
          this registration statement to be signed on its behalf by the
          undersigned, thereto duly authorized.


          Dated:  March 26, 1999          UNISOURCE ENERGY CORPORATION



                                          By: /s/ Ira R. Adler
                                             --------------------------
                                             Name: Ira R. Adler
                                             Title: Executive Vice President,
                                                    Chief Financial Officer &
                                                    Treasurer


                                     -4-

     <PAGE>


                                    EXHIBIT INDEX

               Exhibit        Description
               -------        -----------

                 1.      Rights Agreement, dated as of March 5, 1999,
                         between UniSource Energy Corporation and The Bank
                         of New York








                             UNISOURCE ENERGY CORPORATION

                                         and

                                 THE BANK OF NEW YORK

                                     Rights Agent

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

                                   RIGHTS AGREEMENT

                              Dated as of March 5, 1999


          <PAGE>


                                   RIGHTS AGREEMENT

               RIGHTS AGREEMENT, dated as of March 5, 1999, between
          UNISOURCE ENERGY CORPORATION, an Arizona corporation (the
          "Company"), and THE BANK OF NEW YORK, a New York banking
          corporation (the "Rights Agent").

               WHEREAS, the Board of Directors of the Company has
          authorized and declared a dividend distribution of one right (a
          "Right") for each share of Common Stock (as hereinafter defined)
          of the Company outstanding at the close of business on April 1,
          1999 (the "Record Date"), each Right representing the right to
          purchase one ten-thousandth of a share of Preferred Stock (as
          such term is hereinafter defined), upon the terms and subject to
          the conditions herein set forth, and has further authorized and
          directed the issuance of one Right (as such number may
          hereinafter be adjusted pursuant to the provisions of Section
          11(i) hereof) with respect to each share of Common Stock that
          shall become outstanding between the Record Date and the earliest
          of the Distribution Date, the Redemption Date and the Final
          Expiration Date (as such terms are hereinafter defined).

               NOW, THEREFORE, in consideration of the premises and the
          mutual agreements herein set forth, the parties hereby agree as
          follows:

               Section 1.  Certain Definitions.  For purposes of this 
                           -------------------
          Agreement, the following terms have the meanings indicated:

                    (a)  "Acquiring Person" shall mean any Person (as such
          term is hereinafter defined) who or which, together with all
          Affiliates and Associates (as such terms are hereinafter defined)
          of such Person, shall be the Beneficial Owner (as such term is
          hereinafter defined) of 15% or more of the Shares of Common Stock
          of the Company then outstanding, but shall not include the
          Company, any Subsidiary (as such term is hereinafter defined) of
          the Company, any employee benefit plan of the Company or of any
          Subsidiary of the Company, any entity holding shares of Common
          Stock for or pursuant to the terms of any such plan, or any
          trustee, administrator or fiduciary of such a plan. 
          Notwithstanding the foregoing,

                    (i)  no Person who or which, at the close of business
               on the date hereof, shall be the Beneficial Owner of 15% or
               more of the shares of Common Stock of the Company then
               outstanding shall be deemed an "Acquiring Person"; provided,
                                                                  --------
               however, that, subject to clause (ii) below, if a Person is,
               -------
               at the close of business on the date hereof, the Beneficial
               Owner of 15% or more of the shares of Common Stock of the
               Company then outstanding and shall thereafter become the
               Beneficial Owner of additional shares of Common Stock of the
               Company at any time that the Person is or thereby becomes
               the Beneficial Owner of 15% or more of the shares of Common
               Stock of the Company then outstanding (other than shares


     <PAGE>
                                      -2-

               acquired solely as a result of corporate action of the
               Company not caused, directly or indirectly, by such Person),
               then such Person shall be deemed to be an "Acquiring
               Person"; and

                    (ii) no Person shall become an "Acquiring Person"
               solely as a result of an acquisition of shares of Common
               Stock of the Company which, by reducing the number of shares
               outstanding, increases the proportionate number of shares
               beneficially owned by such Person to 15% or more of the
               shares of Common Stock of the Company then outstanding;
               provided, however, that if a Person would, but for the 
               --------  -------
               provisions of this clause (ii), become an Acquiring Person
               by reason of share purchases by the Company and shall, after
               such share purchases by the Company, become the Beneficial
               Owner of any additional shares of Common Stock of the
               Company at any time that the Person is or thereby becomes
               the Beneficial Owner of 15% or more of the shares of Common
               Stock of the Company then outstanding (not as a result of
               any action or transaction contemplated in this clause (ii)
               or in clause (iii) below), then such Person shall be deemed
               to be an "Acquiring Person"; and

                    (iii)     no Person shall become an "Acquiring Person"
               solely as a result of an action or transaction or series of
               related actions or transactions approved by the Board of
               Directors of the Company before such Person would otherwise
               have become an "Acquiring Person"; provided, however,  that
                                                  --------  -------
               if any Person which, but for the foregoing provisions of
               this clause (iii), would have become an "Acquiring Person"
               shall thereafter acquire additional shares of Common Stock
               (not as a result of any action or transaction contemplated
               in clause (ii) or in this clause (iii)), then such person
               shall be deemed to be an "Acquiring Person".

          Notwithstanding the foregoing, if the Board of Directors of the
          Company determines in good faith that a Person who would
          otherwise be an "Acquiring Person", as defined pursuant to the
          foregoing provisions of this paragraph (a), has become such
          inadvertently, and such Person divests as promptly as practicable
          a sufficient number of Common Shares so that such Person would no
          longer be an "Acquiring Person," as defined pursuant to the
          foregoing provisions of this paragraph (a), then such Person
          shall not be deemed to be an "Acquiring Person" for any purposes
          of this Agreement.

               (b) "Affiliate" and "Associate" shall have the respective
          meanings ascribed to such terms in Rule 12b-2 of the General
          Rules and Regulations under the Securities Exchange Act of 1934,
          as amended (the "Exchange Act"), as in effect on the date of this
          Agreement.

               (c) A Person shall be deemed the "Beneficial Owner" of and
          shall be deemed to "beneficially own" any securities:

               (i)  which such Person or any of such Person's Affiliates or
                    Associates beneficially owns, directly or indirectly;


     <PAGE>
                                      -3-

               (ii) which such Person or any of such Person's Affiliates or
                    Associates has (A) the right to acquire (whether such
                    right is exercisable immediately or only after the
                    passage of time) pursuant to any agreement, arrangement
                    or understanding (whether or not in writing) (other
                    than customary agreements with and between underwriters
                    and selling group members with respect to a bona fide
                    public offering of securities), or upon the exercise of
                    conversion rights, exchange rights, rights (other than
                    these Rights), warrants or options, or otherwise;
                    provided, however, that a Person shall not be deemed
                    the Beneficial Owner of, or to beneficially own,
                    securities tendered pursuant to a tender or exchange
                    offer made by or on behalf of such Person or any of
                    such Person's Affiliates or Associates until such
                    tendered securities are accepted for purchase or
                    exchange; or (B) the right to vote pursuant to any
                    agreement, arrangement or understanding; provided,
                    however, that a Person shall not be deemed the
                    Beneficial Owner of, or to beneficially own, any
                    security if the agreement, arrangement or understanding
                    to vote such security (1) arises solely from a
                    revocable proxy given to such Person in response to a
                    public proxy solicitation made pursuant to, and in
                    accordance with, the applicable rules and regulations
                    of the Exchange Act and (2) is not also then reportable
                    on Schedule 13D under the Exchange Act (or any
                    comparable or successor report); or

              (iii) which are beneficially owned, directly or
                    indirectly, by any other Person with which such
                    Person or any of such Person's Affiliates or
                    Associates has any agreement, arrangement or
                    understanding (whether or not in writing) (other
                    than customary agreements with and between
                    underwriters and selling group members with
                    respect to a bona fide public offering of
                    securities) for the purpose of acquiring, holding,
                    voting (except to the extent contemplated by the
                    provision to Section 1(c)(ii)(B)) or disposing of
                    any securities of the Company.

               (d)  "Business Day" shall mean any day other than a
          Saturday, a Sunday, or a day on which banking institutions in the
          State of New York are authorized or obligated by law or executive
          order to close.

               (e)  "close of business" on any given date shall mean 
          5:00 P.M., New York time, on such date; provided, however, that
          if such date is not a Business Day it shall mean 5:00 P.M. New
          York time, on the next succeeding Business Day.

               (f)  "Common Stock" when used with reference to the Company
          shall mean the common stock, without par value, of the Company. 
          "Common Stock" when used with reference to any Person other than
          the Company shall mean the capital stock (or equity interest)
          with the greatest voting power of such other Person or, if such
          other Person is a Subsidiary of another Person other than an
          individual, the Person or Persons other than an individual which
          ultimately control such first-mentioned Person.


     <PAGE>
                                      -4-

               (g)  "Company" shall have the meaning set forth in the
          preamble hereto.

               (h)  "Current Per Share Market Price" shall have the meaning
          set forth in Section 11(d)(i) hereof.

               (i)  "Depositary Agent" shall have the meaning set forth in
          Section 14(b) hereof.  The entity acting as Rights Agent may also
          act as Depositary Agent.

               (j)  "Distribution Date" shall have the meaning set forth in
          Section 3(a) hereof.

               (k)  "Final Expiration Date" shall have the meaning set
          forth in Section 7(a) hereof.

               (l)  "Person" shall mean any individual, firm, corporation,
          partnership or other entity, and shall include any successor (by
          merger or otherwise) of such entity.

               (m)  "Preferred Stock" shall mean the series of the
          Company's Preferred Stock, without par value, having the
          preferences, limitations, relative rights and other terms set
          forth in the form of the Company's Statement Pursuant to 
          Section 10-602 relating to Preferred Stock, Series X, attached to
          this Agreement as Exhibit A.

               (n)  "Purchase Price" shall have the meaning set forth in
          Section 7(b) hereof.

               (o)  "Record Date" shall have the meaning set forth in the
          recital hereto.

               (p)  "Redemption Date" shall have the meaning set forth in
          Section 7(a) hereof.

               (q)  "Redemption Price" shall have the meaning set forth in
          Section 23(b) hereof.

               (r)  "Right" shall have the meaning set forth in the recital
          hereto.

               (s)  "Right Certificate" shall have the meaning set forth in
          Section 3(a) hereof, and shall be substantially in the form
          attached to this Agreement as Exhibit B.

               (t)  "Rights Agent" shall have the meaning set forth in the
          preamble hereto.

               (u)  "Shares Acquisition Date" shall mean the first date of
          public announcement by the Company or an Acquiring Person that an
          Acquiring Person has become such.

               (v)  "Subsidiary" of any Person shall mean any corporation
          or other entity of which a majority of the voting power of the
          voting equity securities or equity interest is owned, directly or
          indirectly, by such Person.


     <PAGE>
                                      -5-

               Section 2.  Appointment of Rights Agent.  The Company 
                           ---------------------------
          hereby appoints the Rights Agent to act as agent for the Company
          and the holders of the Rights (who, in accordance with Section 3
          hereof, shall prior to the Distribution Date also be the holders
          of shares of the Common Stock of the Company) in accordance with
          the terms and conditions hereof, and the Rights Agent hereby
          accepts such appointment.  The Company may from time to time act
          as Co-Rights Agent or appoint such Co-Rights Agents as it may
          deem necessary or desirable.  Any actions which may be taken by
          and any deliveries which are to be made to the Rights Agent
          pursuant to the terms of this Agreement may be taken by and may
          be delivered to any such Co-Rights Agents.  To the extent that
          any Co-Rights Agent takes any action pursuant to this Agreement,
          such Co-Rights Agent shall be entitled to all of the rights and
          protections of, and subject to all of the applicable duties and
          obligations imposed upon, the Rights Agent pursuant to the terms
          of this Agreement.

               Section 3.  Issue of Right Certificates.  (a) Until the 
                           ---------------------------
          earlier of (i) the close of business on the tenth Business Day
          after the Shares Acquisition Date (or, if the Shares Acquisition
          Date shall have occurred prior to the Record Date, the close of
          business on the tenth Business Day after the Record Date) or 
          (ii) the close of business on the tenth Business Day after the
          date of the commencement of a tender or exchange offer the
          consummation of which would result in any Person becoming an
          Acquiring Person (or such later date as the Board of Directors
          may determine by resolution adopted prior to the Shares
          Acquisition Date) (such date being herein referred to as the
          "Distribution Date"), (x) the Rights will be evidenced by the
          certificates for shares of Common Stock of the Company and not by
          separate Right Certificates, and (y) the Rights will be
          transferable only in connection with, and will automatically be
          transferred by, a transfer of the associated shares of Common
          Stock of the Company.  As soon as practicable after the
          Distribution Date, the Company will prepare and execute, the
          Rights Agent will countersign, and the Company will send or cause
          to be sent (and the Rights Agent will, if requested, send) by
          first-class, insured, postage-prepaid mail, to each record holder
          of shares of Common Stock of the Company as of the close of
          business on the Distribution Date, at the address of such holder
          shown on the records of the Company, a Right Certificate in the
          form described in Section 4 hereof (a "Right Certificate"),
          evidencing one Right for each share of Common Stock so held.  On
          and after the Distribution Date, the Rights will be evidenced
          solely by such Right Certificates.

               (b)  On or prior to the Record Date or as soon as
          practicable thereafter, the Company will send a copy of a summary
          of the Rights by first-class mail, to each record holder of
          shares of Common Stock of the Company as of the close of business
          on the Record Date or, if such mailing is made prior to the
          Record Date, to each holder of record as of the date of such
          mailing, at the address of such holder shown on the records of
          the Company.

               (c)  Rights shall be issued in respect of all shares of
          Common Stock of the Company issued after the Record Date but
          prior to the earliest of the Distribution Date, the Redemption


     <PAGE>
                                      -6-

          Date or the Final Expiration Date, and certificates evidencing
          such shares shall have impressed on, printed on, written on or
          otherwise affixed to them the following legend:

                    "This certificate also evidences and entitles the
                    holder hereof to certain rights as set forth in a
                    Rights Agreement, dated as of March 5, 1999 (the
                    "Rights Agreement"), between UniSource Energy
                    Corporation and The Bank of New York the terms of which
                    are hereby incorporated herein by reference and a copy
                    of which is on file at the principal executive offices
                    of UniSource Energy Corporation.  Under certain
                    circumstances, as set forth in the Rights Agreement,
                    such Rights will be evidenced by separate certificates
                    and will no longer be evidenced by this certificate. 
                    UniSource Energy Corporation will mail to the holder of
                    this certificate a copy of the Rights Agreement without
                    charge after receipt of a written request therefor.  As
                    described in the Rights Agreement, Rights beneficially
                    owned by an Acquiring Person or an Affiliate or
                    Associate of an Acquiring Person (as such terms are
                    defined in the Rights Agreement) and any Transferee
                    shall become null and void."

          In the event that the Company shall purchase or acquire any
          shares of Common Stock of the Company after the Record Date but
          prior to the earliest of the Distribution Date, the Redemption
          Date or the Final Expiration Date any Rights associated with such
          shares of Common Stock shall be deemed canceled and retired so
          that the Company shall not be entitled to exercise any Rights
          associated with shares of Common Stock which are no longer
          outstanding.

               Section 4.  Form of Right Certificates.  The Right 
                           --------------------------
          Certificates (and the forms of election to purchase shares of
          Preferred Stock and of assignment to be printed on the reverse
          thereof) may have such marks of identification or designation and
          such legends, summaries or endorsements printed thereon as the
          Company may deem appropriate and as are not inconsistent with the
          provisions of this Agreement, or as may be required to comply
          with any applicable law or with any rule or regulation made
          pursuant thereto or with any rule or regulation of any stock
          exchange on which the Rights may from time to time be listed, or
          to conform to usage.

               Section 5.  Countersignature and Registration.  The Right 
                           ---------------------------------
          Certificates shall be executed on behalf of the Company by its
          Chairman of the Board, its President, or any of its Vice
          Presidents, either manually or by facsimile signature, shall have
          affixed thereto the Company's seal or a facsimile thereof, and
          shall be attested by the Corporate Secretary or an Assistant
          Corporate Secretary, or the Treasurer or an Assistant Treasurer,
          of the Company, either manually or by facsimile signature.  The
          Right Certificates shall be manually or by facsimile signature
          countersigned by the Rights Agent and shall not be valid for any
          purpose unless countersigned.  In case any officer of the Company
          who shall have signed any of the Right Certificates shall cease
          to be such officer of the Company before countersignature by the


     <PAGE>
                                      -7-

          Rights Agent and issuance and delivery by the Company, such Right
          Certificate nevertheless may be countersigned by the Rights Agent
          and issued and delivered by the Company with the same force and
          effect as though the person who signed such Right Certificates
          had not ceased to be such officer of the Company; and any Right
          Certificate may be signed on behalf of the Company by any person
          who, at the actual date of the execution of such Right
          Certificate, shall be a proper officer of the Company to sign
          such Right Certificate, although at the date of the execution of
          this Rights Agreement any such person was not such an officer.

               Following the Distribution Date, the Rights Agent will keep
          or cause to be kept, at its shareholder services office, books
          for registration and transfer of the Right Certificates issued
          hereunder.  Such books shall show the names and addresses of the
          respective holders of the Right Certificates, the number of
          Rights evidenced on its face by each of the Right Certificates
          and the date of each of the Right Certificates.

               Section 6.  Transfer, Split Up, Combination and Exchange of
                           -----------------------------------------------
          Right Certificates; Mutilated, Destroyed, Lost or Stolen Right 
          --------------------------------------------------------------
          Certificates.  Subject to the provisions of Sections 7(e) and 14 
          ------------
          hereof, at any time after the close of business on the
          Distribution Date, and at or prior to the close of business on
          the earlier of the Redemption Date or the Final Expiration Date,
          any Right Certificate or Right Certificates may be transferred,
          split up, combined or exchanged for another Right Certificate or
          Right Certificates, entitling the registered holder to purchase a
          like number of one ten-thousandths of a share of Preferred Stock
          as the Right Certificate or Right Certificates surrendered then
          entitled such holder to purchase.  Any registered holder desiring
          to transfer, split up, combine or exchange any Right Certificate
          or Right Certificates shall make such request in writing
          delivered to the Rights Agent, and shall surrender the Right
          Certificate or Right Certificates to be transferred, split up,
          combined or exchanged at the shareholder services office of the
          Rights Agent designated for such purpose.  Neither the Rights
          Agent nor the Company shall be obligated to take any such action
          whatsoever with respect to the transfer of any such surrendered
          Right Certificate until the registered holder shall have
          completed and signed the certificate contained in the form of
          assignment on the reverse side of such Right Certificate and
          shall have provided such additional evidence of the identity of
          the Beneficial Owner (or former Beneficial Owner) or Affiliate or
          Associate thereof as the Company shall reasonably request. 
          Thereupon, the Rights Agent shall, subject to Sections 7(e) and
          14, countersign and deliver to the person entitled thereto a
          Right Certificate or Right Certificates, as the case may be, as
          so requested. The Company may require payment of a sum sufficient
          to cover any tax or governmental charge that may be imposed in
          connection with any transfer, split up, combination or exchange
          of Right Certificates.

               Upon receipt by the Company and the Rights Agent of evidence
          reasonably satisfactory to them of the loss, theft, destruction
          or mutilation of a Right Certificate, and, in case of loss, theft
          or destruction, of indemnity or security reasonably satisfactory


     <PAGE>
                                      -8-

          to them, and, at the Company's request, reimbursement to the
          Company and the Rights Agent of all reasonable expenses
          incidental thereto, and upon surrender to the Rights Agent and
          cancellation of the Right Certificate if mutilated, the Company
          will make and deliver a new Right Certificate of like tenor to
          the Rights Agent for delivery to the registered holder in lieu of
          the Right Certificate so lost, stolen, destroyed or mutilated.

               Section 7.  Exercise of Rights; Purchase Price; Expiration 
                           ----------------------------------------------
          Date of Rights.  (a) Subject to Section 7(e) hereof, at any time 
          --------------
          after the Distribution Date, and at or prior to the earlier of
          (i) the close of business on March 31, 2009 (the "Final
          Expiration Date"), or (ii) the time at which the Rights are
          redeemed or exchanged as provided in Section 23 hereof (the
          "Redemption Date"), the registered holder of any Right
          Certificate may exercise the Rights evidenced thereby (except as
          otherwise provided herein, including without limitation any
          restriction on exercisability set forth in or resulting from
          Section 9, Section 11(a)(iii), Section 14 and Section 20(j)
          hereof) in whole or in part upon surrender of the Right
          Certificate, with the form of election to purchase and the
          certificate on the reverse side thereof duly executed, to the
          Rights Agent at the principal office or offices of the Rights
          Agent designated for such purpose, together with payment of the
          Purchase Price for each one ten-thousandth of a share of
          Preferred Stock as to which the Rights are exercised.

               (b)  The purchase price for each one ten-thousandth of a
          share of Preferred Stock pursuant to the exercise of a Right (the
          "Purchase Price") shall initially be $50.00, shall be subject to
          adjustment from time to time as provided in Sections 11 and 13
          hereof and shall be payable in accordance with paragraph (c)
          below.

               (c)  Upon receipt of a Right Certificate representing
          exercisable Rights, with the form of election to purchase and the
          certificate duly executed, accompanied by payment of the Purchase
          Price for the shares of Preferred Stock (including fractions
          thereof) to be purchased and an amount equal to any applicable
          transfer tax required to be paid by the holder of such Right
          Certificate in accordance with Section 9 hereof, the Rights Agent
          shall thereupon promptly (i) (A) requisition from any transfer
          agent for the shares of Preferred Stock certificates for the
          number of whole shares of Preferred Stock to be purchased and the
          Company hereby irrevocably authorizes such transfer agent to
          comply with all such requests, or (B) requisition from the
          Depositary Agent depositary receipts representing such number of
          one ten-thousandths of a share of Preferred Stock as are to be
          purchased (in which case certificates for the shares of Preferred
          Stock represented by such receipts shall be deposited by the
          transfer agent with the Depositary Agent) and the Company hereby
          directs the Depositary Agent to comply with such request, (ii)
          when appropriate, requisition from the Company the amount of cash
          to be paid in lieu of issuance of fractional shares in accordance
          with Section 14 hereof, (iii) after receipt of such certificates
          or depositary receipts, cause the same to be delivered to or upon
          the order of the registered holder of such Right Certificate,
          registered in such name or names as may be designated by such
          holder and (iv) when appropriate, after receipt, deliver such
          cash to or upon the order of the registered holder of such Right


     <PAGE>
                                      -9-

          Certificate.  The payment of the Purchase Price shall be made in
          cash or by certified bank check or bank draft payable to the
          order of the Company or Rights Agent.  The provisions of this
          subsection (c) are subject to the provisions of subsections (e)
          and (f) of this Section 7 and the provisions of Section 20(j).

               (d)  In case the registered holder of any Right Certificate
          shall exercise less than all the Rights evidenced thereby, a new
          Right Certificate evidencing Rights equivalent to the Rights
          remaining unexercised shall be issued by the Rights Agent to the
          registered holder of such Right Certificate or to his duly
          authorized assigns, subject to the provisions of Section 14
          hereof.

               (e)  Notwithstanding anything in this Agreement to the
          contrary, from and after the date upon which any person shall
          become an Acquiring Person, any Rights beneficially owned by 
          (i) an Acquiring Person or an Associate or Affiliate of an
          Acquiring Person, (ii) a transferee of an Acquiring Person (or of
          any such Associate or Affiliate) who becomes a transferee after
          the Acquiring Person becomes such, or (iii) a transferee of an
          Acquiring Person (or of any such Associate or Affiliate) who
          becomes a transferee prior to or concurrently with the Acquiring
          Person becoming such and receives such Rights pursuant to either
          (A) a transfer (whether or not for consideration) from the
          Acquiring Person to holders of equity interests in such Acquiring
          Person or to any Person with whom the Acquiring Person has any
          continuing agreement, arrangement or understanding regarding the
          transferred Rights or (B) a transfer which the Board of Directors
          of the Company has determined is part of a plan, arrangement or
          understanding which has as a primary purpose or effect the
          avoidance of this Section 7(e), shall become and be null and void
          without any further action and no holder of such Rights shall
          have any rights whatsoever with respect to such Rights, whether
          under any provision of this Agreement or otherwise.  Each of the
          Company and the Rights Agent shall use all reasonable efforts to
          ensure that (x) no Right Certificate shall be issued pursuant to
          Section 3 that represents any such Right, (y) no Right
          Certificate shall be issued at any time upon the transfer of any
          Rights to or from an Acquiring Person or any Associate or
          Affiliate thereof or to or from any nominee of such Acquiring
          Person, Associate or Affiliate and (z) any Right Certificate
          delivered to the Rights Agent for such a transfer shall be
          canceled.

               (f)  Notwithstanding anything in this Agreement to the
          contrary, neither the Rights Agent nor the Company shall be
          obligated to undertake any action with respect to the exercise of
          any Rights unless the registered holder thereof shall have 
          (i) completed and signed the certificate contained in the form of
          election to purchase set forth on the reverse side of the Right
          Certificate surrendered for such exercise, and (ii) provided such
          additional evidence of the identity of the Beneficial Owner (or
          former Beneficial Owner) or Affiliates or Associates thereof as
          the Rights Agent or the Company shall reasonably request.


     <PAGE>
                                      -10-

               Section 8.  Cancellation and Destruction of Right 
                           -------------------------------------
          Certificates.  All Right Certificates surrendered for the purpose
          ------------
          of exercise, transfer, split up, combination or exchange shall,
          if surrendered to the Company or to any of its agents, be
          delivered to the Rights Agent for cancellation or in canceled
          form, or, if surrendered to the Rights Agent, shall be canceled
          by it, and no Right Certificates shall be issued in lieu thereof
          except as expressly permitted by any of the provisions of this
          Rights Agreement.  The Company shall deliver to the Rights Agent
          for cancellation and retirement, and the Rights Agent shall so
          cancel and retire, any Right Certificate purchased or acquired by
          the Company otherwise than upon the exercise thereof.  The Rights
          Agent shall deliver all canceled Right Certificates to the
          Company, or shall, at the written request of the Company, destroy
          such canceled Right Certificates in accordance with Rule 17Ad-7
          under the Exchange Act, and in such case shall deliver a
          certificate of destruction thereof to the Company.

               Section 9.  Reservation and Availability of Preferred Stock. 
                           -----------------------------------------------
          The Company covenants and agrees that it will cause to be
          reserved and kept available out of its authorized and unissued
          shares of Preferred Stock the number of shares of Preferred Stock
          that will be sufficient to permit the exercise in full of all
          outstanding Rights.

               The Company shall use all reasonable efforts, as soon as
          practicable following the Shares Acquisition Date, to obtain such
          regulatory approvals and take such other action as may be
          required for it to issue and/or sell securities purchasable upon
          the exercise of the Right.

               Notwithstanding any provision of this Agreement to the
          contrary, the Rights shall not be exercisable pursuant to 
          Section 7 or pursuant to the provisions contemplated by 
          Section 11(a)(ii) hereof (a) unless and until any regulatory
          approvals required for the issuance and/or sale of securities
          upon such exercise have been obtained, (b) if the exercise
          thereof, or the issuance and/or sale of the securities to be
          purchased upon such exercise, would violate or contravene any
          applicable law, regulation or administrative or judicial order or
          (c) in any jurisdiction if any requisite filings under any
          applicable securities law shall not have been made or become
          effective in such jurisdiction.

               The Company shall take all such action as may be necessary
          to ensure that all securities delivered upon exercise of Rights
          shall be duly and validly authorized and issued and, if equity
          securities, fully paid and nonassessable.

               The Company shall pay when due and payable any and all
          federal and state transfer taxes and charges which may be payable
          in respect of the issuance or delivery of the Right Certificates
          or of any securities upon the exercise of Rights.  The Company
          shall not, however, be required to pay any transfer tax which may
          be payable in respect of any transfer or delivery of Right
          Certificates to a person other than, or the issuance or delivery
          of certificates or depositary receipts for securities in a name
          other than that of, the registered holder of the Right


     <PAGE>
                                      -11-

          Certificate evidencing Rights surrendered for transfer or
          exercise or to issue or to deliver any certificates or depositary
          receipts for securities upon the exercise of any Rights until any
          such tax shall have been paid by the holder of such Right
          Certificate or until it has been established to the Company's
          satisfaction that no such tax is due.

               Section 10.  Preferred Stock Issuance Date.  Each person in
                            -----------------------------
          whose name any certificate for shares of Preferred Stock is
          issued upon the exercise of Rights shall for all purposes be
          deemed to have become the holder of record of the shares of
          Preferred Stock represented thereby on, and such certificate
          shall be dated, the date upon which the Right Certificate
          evidencing such Rights was duly surrendered and payment of the
          Purchase Price (and any applicable transfer taxes) was made (or
          if such day is not a Business Day, the next succeeding Business
          Day).

               Section 11.  Adjustment of Purchase Price, Amount and Type 
                            ---------------------------------------------
          of Securities or Number of Rights.  The Purchase Price, the 
          ---------------------------------
          amount and type of securities covered by each Right and the
          number of Rights outstanding are subject to adjustment from time
          to time as provided in this Section 11.

               (a) (i) In the event the Company shall at any time after the
          date of this Agreement and prior to the Shares Acquisition Date
          (A) declare a dividend on the Preferred Stock payable in shares
          of Preferred Stock, (B) subdivide the outstanding Preferred
          Stock, (C) combine the outstanding shares of Preferred Stock into
          a smaller number of shares of Preferred Stock or (D) issue any
          shares of its capital stock in a reclassification of the
          Preferred Stock (including any such reclassification in
          connection with a consolidation or merger in which the Company is
          the continuing or surviving corporation), the Purchase Price in
          effect at the time of the record date for such dividend or of the
          effective date of such subdivision, combination or
          reclassification, and the number and kind of shares of capital
          stock issuable on such date, shall be proportionately adjusted so
          that the holder of any Right exercised after such time shall be
          entitled to receive the aggregate number and kind of shares of
          capital stock which, if such Right had been exercised immediately
          prior to such date and at a time when the Preferred Stock
          transfer books of the Company were open, such holder would have
          owned upon such exercise and been entitled to receive by virtue
          of such dividend, subdivision, combination or reclassification;
          provided, however, that in no event shall the consideration to be
          --------  -------
          paid upon the exercise of one Right be less than the aggregate
          par value of the shares of capital stock of the Company issuable
          upon exercise of one Right.

               (ii)  Subject to the provisions of Section 7(e), Section 9,
          Section 14 and Section 20(j) hereof, in the event any Person
          shall become an Acquiring Person, proper provision shall be made
          so that each holder of a Right, except as provided below, shall
          thereafter have a right to receive, upon exercise thereof at a
          price equal to the Purchase Price, (A) in lieu of shares of
          Preferred Stock that number of shares of Common Stock of the
          Company having an aggregate Current Per Share Market Price on the
          Shares Acquisition Date equal to twice the Purchase Price or


     <PAGE>
                                      -12-

          (B) at the election of the Company, that number of shares of
          Preferred Stock equal to the number of shares of Common Stock
          determined in accordance with clause (A) multiplied by one ten-
          thousandth (1/10,000).

               (iii)  In the event that (x) there shall not be sufficient
          shares of Common Stock of the Company and/or Preferred Stock or a
          combination thereof authorized but unissued, or there shall not
          have been received any regulatory approval required, to permit
          the exercise in full of the Rights in accordance with the
          foregoing subparagraph (ii), or (y) the issuance of Common Stock
          of the Company and/or Preferred Stock upon such exercise shall
          not then be permitted under the Company's Amended and Restated
          Articles of Incorporation or any applicable law or administrative
          or judicial regulation or order, the Company may, at its option,
          with respect to some of or all of the Rights (as hereinafter
          provided), make adequate provision to substitute, upon exercise
          of each such Right but subject to Section 9 hereof, (1) cash, (2)
          a reduction in the Purchase Price, (3) equity securities of the
          Company and/or its Subsidiaries, (4) debt securities of the
          Company and/or its Subsidiaries, (5) other assets or securities,
          or (6) any combination of the foregoing, having an aggregate
          value equal to the aggregate Current Per Share Market Price on
          the Shares Acquisition Date of the securities for which each such
          Right would otherwise be exercisable pursuant to 
          Section 11(a)(ii) hereof (such aggregate value to be determined
          by the Board of Directors of the Company based upon the advice of
          a nationally recognized investment banking firm selected by the
          Board of Directors of the Company, which determination shall be
          described in a statement filed with the Rights Agent).  To the
          extent that the Board of Directors of the Company determines that
          some action need be taken pursuant to the first sentence of this
          Section 11(a)(iii), the Company (x) shall provide, subject to
          Section 7(e) hereof, that such action shall apply uniformly to
          all outstanding Rights (or to Rights pro-rata or such other
          reasonable method of allocation as shall be determined by the
          Board of Directors of the Company, to the extent that such action
          applies to less than all the Rights), and (y) may suspend the
          exercisability of the Rights in order to seek any authorization
          of additional shares, to take any action to obtain any required
          regulatory approval, to decide the appropriate form of
          distribution to be made pursuant to such first sentence and to
          determine the value thereof and/or to take any other action
          deemed by the Company to be legally required in order to effect
          such distribution.  In the event of any such suspension, the
          Company shall issue a public announcement stating that the
          exercisability of the Rights has been temporarily suspended, as
          well as a public announcement at such time as the suspension is
          no longer in effect.

               (b)  In case the Company shall fix a record date for the
          issuance of rights, options or warrants to all holders of shares
          of Preferred Stock prior to the Shares Acquisition Date entitling
          them (for a period expiring within 45 calendar days after such
          record date) to subscribe for or purchase shares of Preferred
          Stock (or shares having the same rights, privileges and
          preferences as the shares of Preferred Stock ("equivalent
          preferred shares")) or securities convertible into shares of
          Preferred Stock or equivalent preferred shares at a price per


    <PAGE>
                                      -13-

          share of Preferred Stock or equivalent preference share (or
          having a conversion price per share, if a security convertible
          into shares of Preferred Stock or equivalent preferred shares)
          less than the then Current Per Share Market Price of the
          Preferred Stock on such record date, the Purchase Price to be in
          effect after such record date shall be determined by multiplying
          the Purchase Price in effect immediately prior to such record
          date by a fraction, the numerator of which shall be the number of
          shares of Preferred Stock outstanding on such record date plus
          the number of shares of Preferred Stock which the aggregate
          offering price of the total number of shares of Preferred Stock
          and/or equivalent preferred shares so to be offered (and/or the
          aggregate initial conversion price of the convertible securities
          so to be offered) would purchase at such Current Per Share Market
          Price and the denominator of which shall be the number of shares
          of Preferred Stock outstanding on such record date plus the
          number of additional shares of Preferred Stock and/or equivalent
          preference shares to be offered for subscription or purchase (or
          into which the convertible securities so to be offered are
          initially convertible).  Shares of Preferred Stock owned by or
          held for the account of the Company shall not be deemed
          outstanding for the purpose of any such computation.  Such
          adjustment shall be made successively whenever such a record date
          is fixed; and in the event that such rights, options or warrants
          are not so issued, the Purchase Price shall be adjusted to be the
          Purchase Price which would then be in effect if such record date
          had not been fixed.  In case such subscription price may be paid
          in a consideration part or all of which shall be in a form other
          than cash, the value of such consideration shall be as determined
          in good faith by the Board of Directors of the Company, whose
          determination shall be described in a statement filed with the
          Rights Agent.

               (c)  In case the Company shall fix a record date for the
          making of a distribution to all holders of shares of the
          Preferred Stock prior to the Shares Acquisition Date (including
          any such distribution made in connection with a consolidation or
          merger in which the Company is the continuing or surviving
          corporation) of evidences of indebtedness or assets (other than a
          regular quarterly cash dividend or a dividend payable in
          Preferred Stock) or subscription rights or warrants (excluding
          those referred to in Section 11(b)), the Purchase Price to be in
          effect after such record date shall be determined by multiplying
          the Purchase Price in effect immediately prior to such record
          date by a fraction, the numerator of which shall be the then
          Current Per Share Market Price of the Preferred Stock on such
          record date, less the fair market value (as determined in good
          faith by the Board of Directors of the Company, whose
          determination shall be described in a statement filed with the
          Rights Agent) of the portion of the assets or evidences of
          indebtedness so to be distributed or of such subscription rights
          or warrants applicable to one share of Preferred Stock and the
          denominator of which shall be such Current Per Share Market Price
          of a share of Preferred Stock.  Such adjustments shall be made
          successively whenever such a record date is fixed; and in the
          event that such distribution is not so made, the Purchase Price
          shall again be adjusted to be the Purchase Price which would then
          be in effect if such record date had not been fixed.


     <PAGE>
                                      -14-

               (d) (i) For the purpose of any computation hereunder, the
          "Current Per Share Market Price" of any security (a "Security"
          for the purpose of this Section 11(d)(i)) on any date shall be
          deemed to be the average of the daily closing prices per share of
          such Security for the 30 consecutive Trading Days (as such term
          is hereinafter defined) immediately prior to such date; provided,
                                                                  --------
          however, that in the event that the Current Per Share Market 
          -------
          Price of the Security is determined during a period following the
          announcement by the issuer of such Security of (A) a dividend or
          distribution on such Security or (B) any subdivision, combination
          or reclassification of such Security and prior to the expiration
          of 30 Trading Days after the ex-dividend date for such dividend
          or distribution, or the record date for such subdivision,
          combination or reclassification, then, and in each such case, the
          Current Per Share Market Price shall be appropriately adjusted to
          reflect the current market price per share equivalent of such
          Security.  The closing price for each day shall be the last sale
          price, regular way, or, in case no such sale takes place on such
          day, the average of the closing bid and asked prices, regular
          way, in either case as reported in the principal consolidated
          transaction reporting system with respect to securities listed or
          admitted to trading on the New York Stock Exchange or, if the
          Security is not listed or admitted to trading on the New York
          Stock Exchange, as reported in the principal consolidated
          transaction reporting system with respect to securities listed on
          the principal national securities exchange on which the Security
          is listed or admitted to trading or, if the Security is not
          listed or admitted to trading on any national securities
          exchange, the last quoted price or, if not so quoted, the average
          of the high bid and low asked prices in the over-the-counter
          market, as reported by the National Association of Securities
          Dealers, Inc. Automated Quotations System ("NASDAQ") or such
          other system then in use, or, if on any such date the Security is
          not quoted by any such organization, the average of the closing
          bid and asked prices as furnished by a professional market maker
          making a market in the Security selected by the Board of
          Directors of the Company.  The term "Trading Day" shall mean a
          day on which the principal national securities exchange on which
          the Security is listed or admitted to trading is open for the
          transaction of business or, if the Security is not listed or
          admitted to trading on any national securities exchange, a
          Business Day.

               (ii) For the purpose of any computation hereunder, the
          Current Per Share Market Price of shares of the Preferred Stock
          on any date shall be determined in accordance with the method set
          forth in Section 11(d)(i).  If shares of the Preferred Stock are
          not publicly traded, the Current Per Share Market Price of shares
          of the Preferred Stock shall be conclusively deemed to be the
          Current Per Share Market Price of the shares of Common Stock of
          the Company as determined pursuant to Section 11(d)(i)
          (appropriately adjusted to reflect any stock split, stock
          dividend, reclassification or similar transaction occurring after
          the Distribution Date), multiplied by ten thousand.  If neither
          the Common Stock nor the Preferred Stock are publicly held or so
          listed or traded, Current Per Share Market Price shall mean the
          fair value per share as determined in good faith by the Board of
          Directors of the Company, whose determination shall be described
          in a statement filed with the Rights Agent.


     <PAGE>
                                      -15-

               (e)  No adjustment in the Purchase Price shall be required
          unless such adjustment would require an increase or decrease of
          at least 1% in the Purchase Price; provided, however, that any
          adjustments which by reason of this Section 11(e) are not
          required to be made shall be carried forward and taken into
          account in any subsequent adjustment.  All calculations under
          this Section 11 shall be made to the nearest cent or to the
          nearest one-millionth of a share of Preferred Stock or one
          ten-thousandth of any other share or security, as the case may
          be.  Notwithstanding the first sentence of this Section 11(e),
          any adjustment required by this Section 11 shall be made no later
          than the earlier of (i) three years from the date of the
          transaction which requires such adjustment or (ii) the date of
          the expiration of the right to exercise any Rights.

               (f)  If as a result of an adjustment made pursuant to
          Section 11(a) or Section 13, the holder of any Right thereafter
          exercised shall become entitled to receive any securities or
          assets other than share of Preferred Stock, the provisions of
          this Agreement with respect to the Preferred Stock shall apply as
          appropriate to any such other securities or assets in order to
          fully realize the benefits intended to be conferred by 
          Section 11(a) and/or Section 13 hereof.

               (g)  All Rights originally issued by the Company subsequent
          to any adjustment made to the Purchase Price hereunder shall
          evidence the right to purchase, at the adjusted Purchase Price,
          the number of one ten-thousandths of a share of Preferred Stock
          purchasable from time to time hereunder upon exercise of the
          Rights, all subject to further adjustment as provided herein.

               (h)  Unless the Company shall have exercised its election as
          provided in Section 11(i), upon each adjustment of the Purchase
          Price as a result of the calculations made in Sections 11(b) and
          (c), each Right outstanding immediately prior to the making of
          such adjustment shall thereafter evidence the right to purchase,
          at the adjusted Purchase Price, that number of ten-thousandths of
          a share of Preferred Stock (calculated to the nearest one
          one-millionth of a share of Preferred Stock) obtained by 
          (i) multiplying (x) the number of ten-thousandths of a share
          covered by a Right immediately prior to this adjustment by 
          (y) the Purchase Price in effect immediately prior to such
          adjustment of the Purchase Price and (ii) dividing the product so
          obtained by the Purchase Price in effect immediately after such
          adjustment of the Purchase Price.

               (i)  The Company may elect on or after the date of any
          adjustment of the Purchase Price to adjust the number of Rights,
          in substitution for any adjustment in the number of ten-
          thousandths of a share of Preferred Stock purchasable upon the
          exercise of a Right.  Each of the Rights outstanding after such
          adjustment of the number of Rights shall be exercisable for the
          number of ten-thousandths of a share of Preferred Stock for which
          a Right was exercisable immediately prior to such adjustment. 
          Each Right held of record prior to such adjustment of the number
          of Rights shall become that number of Rights (calculated to the


     <PAGE>
                                      -16-

          nearest one ten-thousandth) obtained by dividing the Purchase
          Price in effect immediately prior to adjustment of the Purchase
          Price by the Purchase Price in effect immediately after
          adjustment of the Purchase Price.  The Company shall make a
          public announcement of its election to adjust the number of
          Rights, indicating the record date for the adjustment, and, if
          known at the time, the amount of the adjustment to be made.  This
          record date may be the date on which the Purchase Price is
          adjusted or any day thereafter, but, if the Right Certificates
          have been issued, shall be at least 10 days later than the date
          of the public announcement.  If Right Certificates have been
          issued, upon each adjustment of the number of Rights pursuant to
          this Section 11(i), the Company shall, as promptly as
          practicable, cause to be distributed, subject to the provisions
          of Section 7(e) hereof, to holders of record of Right
          Certificates on such record date Right Certificates evidencing,
          subject to Section 14 hereof, the additional Rights to which such
          holders shall be entitled as a result of such adjustment, or, at
          the option of the Company, shall cause to be distributed to such
          holders of record in substitution and replacement for the Right
          Certificates held by such holders prior to the date of
          adjustment, and upon surrender thereof, if required by the
          Company, new Right Certificates evidencing all the Rights to
          which such holders shall be entitled after such adjustment. 
          Right Certificates so to be distributed shall be issued, executed
          and countersigned in the manner provided for herein and shall be
          registered in the names of the holders of record of Right
          Certificates on the record date specified in the public
          announcement.

               (j)  Irrespective of any adjustment or change in the
          Purchase Price or the number of ten-thousandths of a share of
          Preferred Stock issuable upon the exercise of the Rights, the
          Right Certificates theretofore and thereafter issued may continue
          to express the Purchase Price and the number of ten-thousandths
          of a share of Preferred Stock which were expressed in the initial
          Right Certificates issued hereunder.

               (k)  In any case in which this Section 11 shall require that
          an adjustment in the Purchase Price be made effective as of a
          record date for a specified event, the Company may elect to defer
          until the occurrence of such event the issuing to the holder of
          any Right exercised after such record date of the Preferred Stock
          and other securities, if any, issuable upon such exercise over
          and above the Preferred Stock and other securities, if any,
          issuable upon such exercise on the basis of the Purchase Price in
          effect prior to such adjustment; provided, however, that the
          Company shall deliver to such holder a due bill or other
          appropriate instrument evidencing such holder's right to receive
          such securities upon the occurrence of the event requiring such
          adjustment.

               (l)  Anything in this Section 11 to the contrary
          notwithstanding, the Company shall be entitled to make such
          reductions in the Purchase Price, in addition to those
          adjustments expressly required by this Section 11, as and to the
          extent that it in its sole discretion shall determine to be
          advisable in order that any consolidation or subdivision of the
          Preferred Stock, issuance wholly for cash of any shares of
          Preferred Stock at less than the current market price, issuance


     <PAGE>
                                      -17-

          wholly for cash of shares of Preferred Stock or securities which
          by their terms are convertible into or exchangeable for shares of
          Preferred Stock, dividends on shares of Preferred Stock payable
          in Preferred Stock or issuance of rights, options or warrants
          referred to hereinabove in Section 11(b), hereafter made by the
          Company to holders of its Preferred Stock shall not be taxable to
          such shareholders.

               (m)  In the event that at any time after the date of this
          Agreement and prior to the Distribution Date, the Company shall
          (i) declare or pay any dividend on its shares of Common Stock
          payable in Common Stock or (ii) effect a subdivision, combination
          or consolidation of its Common Stock (by reclassification or
          otherwise than by payment of dividends in its Common Stock) into
          a greater or lesser number of shares of Common Stock of the
          Company, then in any such case (i) the Purchase Price in effect
          after such event upon proper exercise of each Right shall be
          determined by multiplying the Purchase Price in effect
          immediately prior to such event by a fraction, the numerator of
          which is the number of such shares of Common Stock outstanding
          immediately before such event and the denominator of which is the
          number of such shares of Common Stock outstanding immediately
          after such event, and (ii) each share of Common Stock of the
          Company outstanding immediately after such event shall have
          issued with respect to it that number of Rights which each such
          share of Common Stock outstanding immediately prior to such event
          had issued with respect to it.  The adjustments provided for in
          this Section 11(m) shall be made successively whenever such a
          dividend is declared or paid or such a subdivision, combination
          or consolidation is effected.

               (n)  The Company covenants and agrees that, after the
          Distribution Date, it will not, except as permitted by Section 23
          hereof, take (or permit any Subsidiary to take) any action if at
          the time such action is taken, it is reasonably foreseeable that
          such action will diminish substantially or otherwise eliminate
          the benefits intended to be afforded by the Rights.

               Section 12.  Certificate of Adjusted Purchase Price or 
                            -----------------------------------------
          Number of Shares.  Whenever an adjustment is made as provided in 
          ----------------
          Sections 11 and 13 hereof, the Company shall promptly (a) prepare
          a certificate setting forth such adjustment, and a brief
          statement of the facts accounting for such adjustment, (b) file
          with the Rights Agent and with each transfer agent for the Common
          Stock of the Company or the Preferred Stock a copy of such
          certificate and (c) mail a brief summary thereof to each holder
          of a Right Certificate in accordance with Section 25 hereof.

               Section 13.  Consolidation, Merger or Sale or Transfer of 
                            --------------------------------------------
          Assets or Earning Power or Certain Other Transactions.  In the 
          -----------------------------------------------------
          event that, following the Shares Acquisition Date, directly or
          indirectly (a) the Company shall consolidate with, or merge with
          and into, any other Person, (other than a subsidiary of the
          Company in a transaction which complies with Section 11(n)
          hereof), (b) any Person (other than a subsidiary of the Company
          in a transaction which complies with Section 11(n) hereof) shall
          consolidate with the Company, or merge with and into the Company


     <PAGE>
                                      -18-

          and the Company shall be the continuing or surviving corporation
          of such merger and, in connection with such merger, all or part
          of the shares of Common Stock of the Company shall be changed
          into or exchanged for stock or other securities of any other
          Person (or the Company) or cash or any other property or (c) the
          Company shall sell or otherwise transfer (or one or more of its
          Subsidiaries shall sell or otherwise transfer), in one or more
          transactions, assets or earning power aggregating 50% or more of
          the assets or earning power of the Company and its Subsidiaries
          (taken as a whole) to any other Person, or to two or more Persons
          which are affiliated or otherwise acting in concert, other than
          the Company or one or more of its wholly-owned Subsidiaries
          (other than a subsidiary of the Company in a transaction which
          complies with Section 11(n) hereof), then, and in each such case,
          proper provision shall be made so that (i) each holder of a Right
          shall thereafter have the right to receive, upon the exercise
          thereof at a price equal to the Purchase Price, that number of
          shares of Common Stock of such other Person (including the
          Company as successor thereto or as the surviving corporation)
          having an aggregate Current Per Share Market Price on the date of
          consummation of such transaction equal to twice the Purchase
          Price, (ii) the issuer of such shares of Common Stock shall
          thereafter be liable for, and shall assume, by virtue of such
          transaction, all the obligations and duties of the Company
          pursuant to this Agreement, (iii) the term "Company" shall
          thereafter be deemed to refer to such issuer, and (iv) such
          issuer shall take such steps (including, but not limited to, the
          reservation of a sufficient number of its shares of Common Stock
          in accordance with Section 9 hereof) in connection with such
          consummation as may be necessary to assure that the provisions
          hereof shall thereafter be applicable, as nearly as reasonably
          may be, in relation to the shares of Common Stock thereafter
          deliverable upon the exercise of the Rights.  The Company shall
          not enter into or permit to occur any such transaction unless
          prior thereto (a) the Company and such issuer shall have executed
          and delivered to the Rights Agent a supplemental agreement so
          providing and (b) the issuance of shares of Common Stock of such
          issuer upon exercise of Rights (as they shall have been modified
          pursuant to the immediately preceding sentence) shall have been
          approved, to the extent required, by all regulatory authorities
          having jurisdiction over such issuance, and all other actions
          necessary in order to permit in full, upon exercise of Rights the
          issuance of such shares of Common Stock (including, without
          limitation, the reservation of sufficient such shares of Common
          Stock to enable all outstanding Rights to be exercised in full)
          shall have been completed.  The Company shall not enter into or
          permit to occur any transaction of the kind referred to in this
          Section 13 if at the time of such transaction there are any
          rights, warrants, instruments or securities outstanding or any
          agreements or arrangements which would eliminate or materially
          diminish the benefits intended to be afforded by the Rights,
          including the benefits intended to be conferred by this Section
          13 upon consummation of such transaction.  The provisions of this
          Section 13 shall similarly apply to successive mergers,
          consolidations, sales and other transactions referred to in this
          Section 13.

               Section 14.  Fractional Rights and Fractional Shares.  
                            ---------------------------------------
          (a) The Company shall not be required to issue fractions of
          Rights or to distribute Right Certificates which evidence


     <PAGE>
                                      -19-

          fractional Rights.  In lieu of such fractional Rights, there
          shall be paid to the registered holders of the Right Certificates
          with regard to which such fractional Rights would otherwise be
          issuable an amount in cash equal to the same fraction of the
          current market value of a whole Right.  For the purposes of this
          Section 14(a), the current market value of a whole Right shall be
          the closing price of the Rights for the Trading Day immediately
          prior to the date on which such fractional Rights would have been
          otherwise issuable.  The closing price for any day shall be the
          last sale price, regular way, or, in case no such sale takes
          place on such day, the average of the closing bid and asked
          prices, regular way, in either case as reported in the principal
          consolidated transaction reporting system with respect to
          securities listed or admitted to trading on the New York Stock
          Exchange or, if the Rights are not listed or admitted to trading
          on the New York Stock Exchange, as reported in the principal
          consolidated transaction reporting system with respect to
          securities listed on the principal national securities exchange
          on which the Rights are listed or admitted to trading or, if the
          Rights are not listed or admitted to trading on any national
          securities exchange, the last quoted price or, if not so quoted,
          the average of the high bid and low asked prices in the
          over-the-counter market, as reported by NASDAQ or such other
          system then in use or, if on any such date the Rights are not
          quoted by any such organization, the average of the closing bid
          and asked prices as furnished by a professional market maker
          making a market in the Rights selected by the Board of Directors
          of the Company.  If on any such date no such market maker is
          making a market in the Rights, the fair value of the Rights on
          such date as determined in good faith by the Board of Directors
          of the Company shall be used.

               (b)  The Company shall not be required to issue fractions of
          a share of Preferred Stock (other than fractions which are
          integral multiples of one ten-thousandth of a share of Preferred
          Stock) upon exercise of the Rights or to distribute certificates
          which evidence fractional shares of Preferred Stock (other than
          fractions which are integral multiples of one ten-thousandth of a
          share of Preferred Stock).  Fractions of a share of Preferred
          Stock in integral multiples of one ten-thousandth of a share of
          Preferred Stock may, at the election of the Company, be evidenced
          by depositary receipts, pursuant to an appropriate agreement
          between the Company and a depositary agent selected by it (the
          "Depositary Agent"), provided that such agreement shall provide
          that the holders of such depositary receipts shall have all the
          rights, privileges and preferences to which they are entitled as
          beneficial owners of the Preferred Stock represented by such
          depositary receipts.  In lieu of fractional shares of Preferred
          Stock that are not integral multiples of one ten-thousandth of a
          share of Preferred Stock, the Company shall pay to the registered
          holders of Right Certificates at the time such Rights are
          exercised as herein provided an amount in cash equal to the same
          fraction of the current market value of one share of Preferred
          Stock.  For purposes of this Section 14(b), the current market
          value of a share of Preferred Stock shall be the closing price of
          a share of Preferred Stock (as determined pursuant to the second
          sentence of Section 11(d)(i) hereof) for the Trading Day
          immediately prior to the date of such exercise.


     <PAGE>
                                      -20-             

               (c)  The holder of a Right by the acceptance of the Right
          expressly waives his right to receive any fractional Rights or
          any fractional securities upon exercise of a Right (except as
          provided above).

               Section 15.  Rights of Action.  All rights of action in 
                            ----------------
          respect of this Agreement, excepting the rights of action given
          to the Rights Agent under Section 18 hereof, are vested in the
          respective registered holders of the Right Certificates; and any
          registered holder of any Right Certificate, without the consent
          of the Rights Agent or of the holder of any other Right
          Certificate, may, in his own behalf and for his own benefit,
          enforce, and may institute and maintain any suit, action or
          proceeding against the Company to enforce, or otherwise act in
          respect of, his right to exercise the Rights evidenced by such
          Right Certificate in the manner provided in such Right
          Certificate and in this Agreement.  Without limiting the
          foregoing or any remedies available to the holders of Rights, it
          is specifically acknowledged that the holders of Rights would not
          have an adequate remedy at law for any breach of this Agreement
          and will be entitled to specific performance of the obligations
          under, and injunctive relief against actual or threatened
          violations of, the obligations of any Person subject to this
          Agreement.

               Section 16.  Agreement of Right Holders.  Every holder of a
                            --------------------------
          Right, by accepting the same, consents and agrees with the
          Company and the Rights Agent and with every other holder of a
          Right that:

               (a)  prior to the Distribution Date, the Rights will be
          transferable only in connection with the transfer of shares of
          Common Stock of the Company;

               (b)  after the Distribution Date, the Right Certificates are
          transferable only on the registry books of the Rights Agent if
          surrendered at the principal office or offices of the Rights
          Agent designated for such purposes, duly endorsed or accompanied
          by a proper instrument of transfer;

               (c)  subject to Sections 6 and 7(f) hereof, the Company and
          the Rights Agent may deem and treat the person in whose name the
          Right Certificate (or, prior to the Distribution Date, the
          associated Common Stock certificate) is registered as the
          absolute owner thereof and of the Rights evidenced thereby
          (notwithstanding any notations of ownership or writing on the
          Right Certificates or the associated Common Stock certificate
          made by anyone other than the Company or the Rights Agent) for
          all purposes whatsoever, and neither the Company nor the Rights
          Agent, subject to the last sentence of Section 7(e), shall be
          affected by any notice to the contrary; and

               (d)  notwithstanding anything in this Agreement to the
          contrary, neither the Company nor the Rights Agent shall have any
          liability to any holder of a Right or other Person as a result of
          its inability to perform any of its obligations under this


     <PAGE>
                                      -21-

          Agreement by reason of any preliminary or permanent injunction or
          other order, decree or ruling issued by a court of competent
          jurisdiction or by a governmental, regulatory or administrative
          agency or commission, or any statute, rule, regulation or
          executive order promulgated or enacted by any governmental
          authority, prohibiting or otherwise restraining performance of
          such obligation; provided, however, the Company shall use its
          best efforts to have any such order, decree or ruling lifted or
          otherwise overturned as soon as possible.

               Section 17.  Right Certificate Holder Not Deemed a 
                            -------------------------------------
          Shareholder.  No holder, as such, of any Right Certificate shall 
          -----------
          be entitled to vote, receive dividends or be deemed for any
          purpose the holder of a share of Preferred Stock or any other
          securities which may at any time be issuable on the exercise of
          the Rights represented thereby, nor shall anything contained
          herein or in any Right Certificate be construed to confer upon
          the holder of any Right Certificate, as such, any of the rights
          of a shareholder or any right to vote for the election of
          directors or upon any matter submitted to shareholders at any
          meeting thereof, or to give or withhold consent to any corporate
          action, or to receive notice of meetings or other actions
          affecting shareholders (except as expressly provided herein), or
          to receive dividends or subscription rights, or otherwise, until
          the Right or Rights evidenced by such Right Certificate shall
          have been exercised in accordance with the provisions hereof.

               Section 18.  Concerning the Rights Agent.  The Company 
                            ---------------------------
          agrees to pay to the Rights Agent reasonable compensation for all
          services rendered by it hereunder and, from time to time, on
          demand of the Rights Agent, its reasonable expenses and counsel
          fees and other disbursements incurred in the administration and
          execution of this Agreement and the exercise and performance of
          its duties hereunder.  The Company also agrees to indemnify the
          Rights Agent for, and to hold it harmless against, any loss,
          liability, or expense, incurred without negligence, bad faith or
          willful misconduct on the part of the Rights Agent, for anything
          done or omitted by the Rights Agent in connection with the
          acceptance and administration of this Agreement, including the
          costs and expenses of defending against any claim of liability in
          the premises.

               The Rights Agent shall be protected and shall incur no
          liability for, or in respect of any action taken, suffered or
          omitted by it in connection with, its administration of this
          Agreement in reliance upon any Right Certificate or certificate
          for a share of Preferred Stock or Common Stock or for other
          securities of the Company, instrument of assignment or transfer,
          power of attorney, endorsement, affidavit, letter, notice,
          direction, consent, certificate, statement, or other paper or
          document believed by it to be genuine and to be signed, executed
          and, where necessary, verified or acknowledged, by the proper
          person or persons.

               Section 19.  Merger or Consolidation or Change of Name of 
                            --------------------------------------------
          Rights Agent.  Any corporation into which the Rights Agent or any
          ------------
          successor Rights Agent may be merged or with which it may be
          consolidated, or any corporation resulting from any merger or


     <PAGE>
                                      -22-

          consolidation to which the Rights Agent or any successor Rights
          Agent shall be a party, or any corporation succeeding to the
          corporate trust or stock transfer business of the Rights Agent or
          any successor Rights Agent, shall be the successor to the Rights
          Agent under this Agreement without the execution or filing of any
          paper or any further act on the part of any of the parties
          hereto, provided that such corporation would be eligible for
          appointment as a successor Rights Agent under the provisions of
          Section 21 hereof.  In case at the time such successor Rights
          Agent shall succeed to the agency created by this Agreement, any
          of the Right Certificates shall have been countersigned but not
          delivered, any such successor Rights Agent may adopt the
          countersignature of the predecessor Rights Agent and deliver such
          Right Certificates so countersigned; and in case at that time any
          of the Right Certificates shall not have been countersigned, any
          successor Rights Agent may countersign such Right Certificates
          either in the name of the predecessor Rights Agent or in the name
          of the successor Rights Agent; and in all such cases such Right
          Certificates shall have the full force provided in the Right
          Certificates and in this Agreement.

               In case at any time the name of the Rights Agent shall be
          changed and at such time any of the Right Certificates shall have
          been countersigned but not delivered, the Rights Agent may adopt
          the countersignature under its prior name and deliver Right
          Certificates so countersigned; and in case at that time any of
          the Right Certificates shall not have been countersigned, the
          Rights Agent may countersign such Right Certificates either in
          its prior name or in its changed name; and in all such cases such
          Right Certificates shall have the full force provided in the
          Right Certificates and in this Agreement.

               Section 20.  Duties of Rights Agent.  The Rights Agent 
                            ----------------------
          undertakes the duties and obligations imposed by this Agreement
          upon the following terms and conditions, by all of which the
          Company and the holders of Right Certificates, by their
          acceptance thereof, shall be bound:

               (a)  The Rights Agent may consult with legal counsel (who
          may be legal counsel for the Company), and the opinion of such
          counsel shall be full and complete authorization and protection
          to the Rights Agent as to any action taken or omitted by it in
          good faith and in accordance with such opinion.

               (b)  Whenever in the performance of its duties under this
          Agreement the Rights Agent shall deem it necessary or desirable
          that any fact or matter be proved or established by the Company
          prior to taking or suffering any action hereunder, such fact or
          matter (unless other evidence in respect thereof be herein
          specifically prescribed) may be deemed to be conclusively proved
          and established by a certificate signed by any one of the
          Chairman of the Board, the Chief Executive Officer, the
          President, any Vice President, the Treasurer, the Secretary, or
          any Assistant Treasurer or Assistant Secretary of the Company and
          delivered to the Rights Agent; and such certificate shall be full
          authorization to the Rights Agent for any action taken or


     <PAGE>
                                      -23-

          suffered in good faith by it under the provisions of this
          Agreement in reliance upon such certificate.

               (c)  The Rights Agent shall be liable hereunder to the
          Company and any other Person only for its own negligence, bad
          faith or willful misconduct.

               (d)  The Rights Agent shall not be liable for or by reason
          of any of the statements of fact or recitals contained in this
          Agreement or in the Right Certificates (except its
          countersignature thereof) or be required to verify the same, but
          all such statements and recitals are and shall be deemed to have
          been made by the Company only.

               (e)  The Rights Agent shall not be under any responsibility
          in respect of the validity of this Agreement or the execution and
          delivery hereof (except the due execution hereof by the Rights
          Agent) or in respect of the validity or execution of any Right
          Certificate (except its countersignature thereof); nor shall it
          be responsible for any breach by the Company of any covenant or
          condition contained in this Agreement or in any Right
          Certificate; nor shall it be responsible for any change in the
          exercisability of the Rights or any adjustment in the terms of
          the Rights (including the manner, method or amount thereof)
          provided for in Section 3, 11 or 13, or the ascertaining of the
          existence of facts that would require any such change or
          adjustment (except with respect to the exercise of Rights
          evidenced by Right Certificates after actual notice that such
          change or adjustment is required); nor shall it by any act
          hereunder be deemed to make any representation or warranty as to
          the authorization or reservation of any shares of Preferred Stock
          to be issued pursuant to this Agreement or any Right Certificate
          or as to whether any shares of Common Stock of the Company or
          Preferred Stock will, when issued, be validly authorized and
          issued, fully paid and nonassessable.

               (f)  The Company agrees that it will perform, execute,
          acknowledge and deliver or cause to be performed, executed,
          acknowledged and delivered all such further and other acts,
          instruments and assurances as may reasonably be required by the
          Rights Agent for the carrying out or performing by the Rights
          Agent of the provisions of this Agreement.

               (g)  The Rights Agent is hereby authorized and directed to
          accept instructions with respect to the performance of its duties
          hereunder from any one of the Chairman of the Board, the Chief
          Executive Officer, the President, any Vice President, the
          Treasurer, the Secretary, or any Assistant Treasurer or Assistant
          Secretary of the Company, and to apply to such officers for
          advice or instructions in connection with its duties, and it
          shall not be liable for any action taken or suffered by it in
          good faith in accordance with instructions of any such officer or
          for any delay in acting while waiting for those instructions.

               (h)  The Rights Agent and any shareholder, director, officer
          or employee of the Rights Agent may buy, sell or deal in any of
          the Rights or other securities of the Company or become


     <PAGE>
                                     -24-

          pecuniarily interested in any transaction in which the Company
          may be interested, or contract with or lend money to the Company
          or otherwise act as fully and freely as though it were not Rights
          Agent under this Agreement.  Nothing herein shall preclude the
          Rights Agent from acting in any other capacity for the Company or
          for any other legal entity.

               (i)  The Rights Agent may execute and exercise any of the
          rights or powers hereby vested in it or perform any duty
          hereunder either itself or by or through its attorneys or agents,
          and the Rights Agent shall not be answerable or accountable for
          any act, default, neglect or misconduct of any such attorneys or
          agents or for any loss to the Company resulting from any such
          act, default, neglect or misconduct, provided reasonable care was
          exercised in the selection and continued employment thereof.

               (j)  If, with respect to any Right Certificate surrendered
          to the Rights Agent for exercise or transfer, the certificate
          attached to the form of assignment or form of election to
          purchase, as the case may be, has either not been completed or
          indicates an affirmative response to clause 1 and/or 2 thereof,
          the Rights Agent shall not take any further action with respect
          to such requested exercise of transfer without first consulting
          with the Company.

               Section 21.  Change of Rights Agent.  The Rights Agent or 
                            ----------------------
          any successor Rights Agent may resign and be discharged from its
          duties under this Agreement upon 30 days' notice in writing
          mailed to the Company and to each transfer agent of the Common
          Stock of the Company or Preferred Stock by registered or
          certified mail, and to the holders of the Right Certificates by
          first-class mail.  The Company may remove the Rights Agent or any
          successor Rights Agent upon 30 days' notice in writing, mailed to
          the Rights Agent or successor Rights Agent, as the case may be,
          and to each transfer agent of the Common Stock of the Company or
          Preferred Stock by registered or certified mail, and to the
          holders of the Right Certificates by first-class mail.  If the
          Rights Agent shall resign or be removed or shall otherwise become
          incapable of acting, the Company shall appoint a successor to the
          Rights Agent.  If the Company shall fail to make such appointment
          within a period of 30 days after giving notice of such removal or
          after it has been notified in writing of such resignation or
          incapacity by the resigning or incapacitated Rights Agent or by
          the holder of a Right Certificate (who shall, with such notice,
          submit his Right Certificate for inspection by the Company), then
          the registered holder of any Right Certificate may apply to any
          court of competent jurisdiction for the appointment of a new
          Rights Agent.  Any successor Rights Agent, whether appointed by
          the Company or by such a court, shall be (a) a corporation
          organized and doing business under the laws of the United States
          or the State of New York or the State of Arizona (or of any other
          state of the United States so long as such corporation is
          authorized to do business as a banking institution in the State
          of Arizona or the State of New York), in good standing, having an
          office in the State of Arizona or the State of New York, which is
          authorized under such laws to exercise corporate trust or stock
          transfer powers and is subject to supervision or examination by
          federal or state authority and which has at the time of its
          appointment as Rights Agent a combined capital and surplus of at


     <PAGE>
                                      -25-

          least $50 million, or (b) an affiliate of a corporation described
          in clause (a) of this sentence.  After appointment, the successor
          Rights Agent shall be vested with the same powers, rights, duties
          and responsibilities as if it had been originally named as Rights
          Agent without further act or deed; but the predecessor Rights
          Agent shall deliver and transfer to the successor Rights Agent
          any property at the time held by it hereunder, and execute and
          deliver any further assurance, conveyance, act or deed necessary
          for the purpose.  Not later than the effective date of any such
          appointment the Company shall file notice thereof in writing with
          the predecessor Rights Agent and each transfer agent of the
          Common Stock of the Company or Preferred Stock, and mail a notice
          thereof in writing to the registered holders of the Right
          Certificates.  Failure to give any notice provided for in this
          Section 21, however, or any defect therein, shall not affect the
          legality or validity of the resignation or removal of the Rights
          Agent or the appointment of the successor Rights Agent, as the
          case may be.

               Section 22.  Issuance of New Right Certificates.  
                            ----------------------------------
          Notwithstanding any of the provisions of this Agreement or of the
          Rights to the contrary, the Company may, at its option, issue new
          Right Certificates evidencing Rights in such form as may be
          approved by its Board of Directors to reflect any adjustment or
          change in the Purchase Price and the number or kind or class of
          shares or other securities or property purchasable under the
          Right Certificates made in accordance with the provisions of this
          Agreement.  In addition, in connection with the issuance or sale
          of shares of Common Stock of the Company following the
          Distribution Date and prior to the Redemption Date or the Final
          Expiration Date, the Company shall, with respect to shares of
          Common Stock of the Company so issued or sold pursuant to the
          exercise of stock options outstanding prior to the Distribution
          Date, or upon the exercise, conversion or exchange of securities
          hereinafter issued by the Company, and outstanding prior to the
          Distribution Date, issue Right Certificates representing the
          appropriate number of Rights in connection with such issuance or
          sale; provided, however, that (i) no such Right Certificate shall
          be issued if, and to the extent that, appropriate adjustment
          shall otherwise have been made in lieu of the issuance thereof.

               Section 23.  Redemption or Exchange.  (a)  The Rights may be
                            ----------------------
          redeemed or exchanged by action of the Board of Directors
          pursuant to this Section 23 and shall not be redeemed in any
          other manner.

               (b)  The Board of Directors of the Company may, at its
          option, at any time prior to the close of business on the tenth
          Business Day after the Shares Acquisition Date (or, if the Shares
          Acquisition Date shall have occurred prior to the Record Date,
          the close of business on the tenth Business Day after the Record
          Date), elect to redeem all but not less than all the then
          outstanding Rights at a redemption price of $0.001 per Right,
          appropriately adjusted to reflect any stock split, stock dividend
          or similar transaction occurring after the date hereof (such
          redemption price being hereinafter referred to as the "Redemption
          Price").  In the event that the aggregate redemption price
          payable to any holder of Rights for all Rights held by such


     <PAGE>
                                      -26-

          holder shall not be evenly divisible by $.01, the fraction of one
          cent otherwise payable to such holder shall be increased to one
          cent.

               (c)  The Board of Directors of the Company may, at its
          option but subject to receipt of any required regulatory
          approvals, at any time after the Shares Acquisition Date and
          prior to such time an Acquiring Person becomes the Beneficial
          Owner of more than 50% of the outstanding shares of Common Stock
          of the Company, elect to exchange all but not less than all the
          then outstanding Rights (other than Rights that have become void
          pursuant to the provisions of Section 7(e) hereof) for (i) shares
          of Common Stock of the Company at an exchange ratio of one share
          of Common Stock of the Company per Right, appropriately adjusted
          in order to protect the interests of holders of Rights generally
          in the event that after the Distribution Date any issuance or
          distribution of securities, cash or assets in respect of, in lieu
          of or in exchange for a share of Common Stock of the Company
          and/or Preferred Stock (whether by dividend, in a
          reclassification or recapitalization, or otherwise, including any
          such transaction involving a merger or consolidation), shall have
          occurred; provided, however, that in the event that insufficient
          shares of Common Stock of the Company are authorized but
          unissued, or otherwise available for issuance, to permit in full
          the exchange provided hereby, then each Right shall be exchanged
          for (x) that fraction of a share of Common Stock of the Company,
          the numerator of which shall be the total number of shares of
          Common Stock of the Company authorized but unissued or otherwise
          available for issuance and the denominator of which shall be the
          aggregate number of such shares of Common Stock of the Company
          which would have been issued pursuant to this subparagraph (c)(i)
          had such shares of Common Stock been available for issuance, plus
          (y) that fraction of a share of Preferred Stock, also
          appropriately adjusted as provided herein, the numerator of which
          shall be one minus the fraction of a share of Common Stock of the
          Company to be so issued and the denominator of which shall be ten
          thousand, or (ii) cash, debt or equity securities of the Company
          and/or a Subsidiary thereof or other assets or any combination of
          the foregoing having an aggregate value (when paid) equal to the
          Current Per Share Market Price of one share of Common Stock of
          the Company at the Shares Acquisition Date.

               (d)  Immediately upon the action of the Board of Directors
          of the Company electing to redeem or exchange the Rights pursuant
          to subsection (b) or (c) of this Section 23, and without any
          further action and without any notice, the right to exercise the
          Rights will terminate and each Right will thereafter represent
          only the right to receive the Redemption Price or the securities
          or assets referred to in subsection (c), as the case may be.
          Within 10 days after such action of the Board of Directors
          electing to redeem or exchange the Rights pursuant to subsection
          (b) or (c), the Company shall give notice thereof to the Rights
          Agent and the holders of the then outstanding Rights by mailing
          such notice to all such holders at their addresses as they appear
          upon the registry books of the Rights Agent or, prior to the
          Distribution Date, on the registry books of the transfer agent
          for the Common Stock of the Company.  Any notice which is mailed
          in the manner herein provided shall be deemed given, whether or
          not the holder receives the notice.  Each such notice of


     <PAGE>
                                      -27-

          redemption or exchange will state the method by which the payment
          of the Redemption Price or the exchange will be made.  Neither
          the Company nor any of its Affiliates or Associates may redeem,
          acquire or purchase for value any Rights at any time in any
          manner other than that specifically set forth in this Section 23,
          other than in connection with the acquisition or purchase of
          shares of Common Stock of the Company prior to the Distribution
          Date.

               Section 24.  Notice of Certain Events.  (a) In case the 
                            ------------------------
          Company shall propose (i) to pay any dividend payable in stock of
          any class to the holders of shares of its Preferred Stock or to
          make any other distribution to the holders of shares of its
          Preferred Stock (other than a regular quarterly cash dividend),
          (ii) to offer to the holders of shares of its Preferred Stock
          rights or warrants to subscribe for or to purchase any additional
          shares of Preferred Stock or shares of stock of any class or any
          other securities, rights or options, (iii) to effect any
          reclassification of its Preferred Stock (other than a
          reclassification involving only the subdivision of outstanding
          shares of Preferred Stock), (iv) to effect any transaction set
          forth in Section 13 hereof, (v) to affect the liquidation,
          dissolution or winding up of the Company, or (vi) to declare or
          pay any dividend on the Common Stock of the Company payable in
          shares of Common Stock of the Company or to effect a subdivision,
          combination or consolidation of the Common Stock of the Company
          (by reclassification or otherwise than by payment of dividends in
          shares of Common Stock of the Company), then, in each such case,
          the Company shall give to each holder of a Right Certificate, in
          accordance with Section 25 hereof, a notice of such proposed
          action, which shall specify the record date for the purposes of
          such stock dividend, or distribution of rights or warrants, or
          the date on which such reclassification, consolidation, merger,
          sale, transaction, transfer, liquidation, dissolution, or winding
          up is to take place and the date of participation therein by the
          holders of the Common Stock of the Company and/or Preferred
          Stock, if any such date is to be fixed, and such notice shall be
          so given in the case of any action covered by clause (i) or (ii)
          above at least 20 days prior to the record date for determining
          holders of shares of the Preferred Stock for purposes of such
          action, and in the case of any such other action, at least 20
          days prior to the date of the taking of such proposed action or
          the date of participation therein by the holders of shares of the
          Common Stock of the Company and/or Preferred Stock, whichever
          shall be the earlier.

               (b)  In case the Shares Acquisition Date shall occur, then,
          in any such case, the Company shall as soon as practicable
          thereafter give to each holder of a Right Certificate, to the
          extent feasible and in accordance with Section 25 hereof, a
          notice of the occurrence of such event, which notice shall
          describe the event and the consequences of the event to holders
          of Rights under Section 11(a)(ii) hereof.

               Section 25.  Notices.  Notices or demands authorized by this
                            -------
          Agreement to be given or made by the Rights Agent or by the
          holder of any Right Certificate to or on the Company shall be
          sufficiently given or made if sent by first-class mail, postage
          prepaid, addressed (until another address is filed in writing
          with the Rights Agent) as follows:


     <PAGE>
                                      -28-


                             UNISOURCE ENERGY CORPORATION
                                220 West Sixth Street
                                Tucson, Arizona  85701
                                Attention:  Secretary

          Subject to the provisions of Section 21 hereof, any notice or
          demand authorized by this Agreement to be given or made by the
          Company or by the holder of any Right Certificate to or on the
          Rights Agent shall be sufficiently given or made if sent by
          first-class mail, postage prepaid, addressed (until another
          address is filed in writing with the Company) as follows:

                                 THE BANK OF NEW YORK
                                  101 Barclay Street
                               New York, New York 10286
                                Attention: Steve Myers

          Notices or demands authorized by this Agreement to be given or
          made by the Company or the Rights Agent to the holder of any
          Right Certificate shall be sufficiently given or made if sent by
          first-class mail, postage prepaid, addressed to such holder at
          the address of such holder as shown on the registry books of the
          Company.

               Section 26.    Supplements and Amendments.  Prior to the
                              --------------------------
          Distribution Date and subject to the penultimate sentence of this
          Section 26, the Company and the Rights Agent may supplement or
          amend this Agreement in any respect without the approval of any
          holders of shares of Common Stock.  From and after the
          Distribution Date and subject to the penultimate sentence of this
          Section 26, the Company and the Rights Agent may supplement or
          amend this Agreement without the approval of any holders of
          Rights Certificates in order to

                         (a) cure any ambiguity, 

                         (b) correct or supplement any provision contained
                    herein which may be defective or inconsistent with any
                    other provisions herein, 

                         (c) shorten or lengthen any time period hereunder,
                    or 

                         (d) change or supplement the provisions hereunder
                    in any manner which the Company may deem necessary or
                    desirable and which shall not adversely affect the
                    interests of the holders of Rights Certificates (other
                    than an Acquiring Person or an Affiliate or Associate
                    of an Acquiring Person);

          provided, however, this Agreement may not be supplemented or
          amended to lengthen, pursuant to clause (c) of this sentence, (i)
          a time period relating to when the Rights may be redeemed at such
          time as the Rights are not then redeemable, or (ii) any other


     <PAGE>
                                      -29-

          time period unless such lengthening is for the purpose of
          protecting, enhancing or clarifying the rights of, and/or the
          benefits to, the holders of Rights.  Upon the delivery of a
          certificate from an appropriate officer of the Company which
          states that the proposed supplement or amendment is in compliance
          with the terms of this Section 26, the Rights Agent shall execute
          such supplement or amendment.  Notwithstanding anything contained
          in this Agreement to the contrary, no supplement or amendment
          shall be made which changes the number of ten-thousandths of a
          share of Preferred Stock for which a Right is exercisable (other
          than to reflect an adjustment effected by the operation of any
          provision of this Agreement or which advances the Final
          Expiration Date.  Prior to the Distribution Date, the interests
          of the holders of Rights shall be deemed coincident with the
          interests of the holders of shares of Common Stock. 
          Notwithstanding any other provision hereof, the Rights Agent
          shall not be required to consent to any amendment or supplement
          pursuant to this Section 26 which alters in any adverse manner
          the Rights Agent's rights or duties.

               Section 27.    Successors.  All the covenants and provisions
                              ----------
          of this Agreement by or for the benefit of the Company or the
          Rights Agent shall bind and inure to the benefit of their
          respective successors and assigns hereunder.

               Section 28.    Benefits of this Agreement.  Nothing in this
                              --------------------------
          Agreement shall be construed to give to any person or corporation
          other than the Company, the Rights Agent and the registered
          holders of the Right Certificates (and, prior to the Distribution
          Date, the shares of Common Stock of the Company) any legal or
          equitable right, remedy or claim under this Agreement; but this
          Agreement shall be for the sole and exclusive benefit of the
          Company, the Rights Agent and the registered holders of the Right
          Certificates (and, prior to the Distribution Date, the shares of
          Common Stock of the Company).

               Section 29.    Severability.  If any term, provision,
                              ------------
          covenant or restriction of this Agreement is held by a court of
          competent jurisdiction or other authority to be invalid, void or
          unenforceable, the remainder of the terms, provisions, covenants
          and restrictions of this Agreement shall remain in full force and
          effect and shall in no way be affected, impaired or invalidated.

               Section 30.    Governing Law.  This Agreement and each Right
                              -------------
          Certificate issued hereunder shall be deemed to be a contract
          made under the laws of the State of Arizona and for all purposes
          shall be governed by and construed in accordance with the laws of
          such State applicable to contracts to be made and performed
          entirely within such State except for Sections 18, 19, 20 and 21
          hereof which shall be governed by and construed in accordance
          with the laws of the State of New York.

               Section 31.    Counterparts.  This Agreement may be executed
                              ------------
          in any number of counterparts and each of such counterparts shall
          for all purposes be deemed to be an original, and all such
          counterparts shall together constitute but one and the same
          instrument.


     <PAGE>
                                      -30- 

               Section 32.    Descriptive Headings.  Descriptive headings
                              --------------------
          of the several Sections of this Agreement are inserted for
          convenience only and shall not control or affect the meaning or
          construction of any of the provisions hereof.


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

                                             UNISOURCE ENERGY CORPORATION

                                              /s/ Ira R. Adler
                                             ----------------------------
                                             By: Ira R. Adler
                                             Name: 
                                             Title: Executive Vice President,
                                                    Chief Financial Officer
                                                    and Treasurer

                                             THE BANK OF NEW YORK

                                              /s/ John Sivertsen
                                             ----------------------------
                                             By:
                                             Name: John Sivertsen
                                             Title:  Vice President


     <PAGE>
                                                                EXHIBIT A


                             UNISOURCE ENERGY CORPORATION

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

                        FORM OF STATEMENT PURSUANT TO S.10-602

                                     RELATING TO

                              PREFERRED STOCK, SERIES X
                              -------------------------

                    In compliance with the requirements of Section 10-602
          of the Arizona Business Corporation Act, UniSource Energy
          Corporation, an Arizona corporation, certifies as follows:

                    (1)  The name of the corporation is UniSource Energy
          Corporation.

                    (2)  At a meeting of the Board of Directors of the
          corporation duly called and held on March 5, 1999, at which a
          quorum was present and acting throughout, the Board of Directors
          duly adopted the following resolutions determining the terms of a
          series of Preferred Stock of the corporation designated as
          "Preferred Stock, Series X:

                         RESOLVED, that pursuant to the authority expressly
               vested in this Board of Directors by the Amended and
               Restated Articles of Incorporation of the Company, this
               Board of Directors hereby (i) establishes a series of
               Preferred Stock designated "Preferred Stock, Series X" (the
               "Series X Preferred Stock") consisting of 10,000 shares and
               having the preferences, limitations, relative rights and
               other terms presented to this meeting, such preferences,
               limitations, relative rights and other terms being
               incorporated into this resolution by reference and deemed to
               be a part hereof and (ii) directs that such preferences,
               limitations, relative rights and other terms be attached as
               an exhibit to the statement required by Section 10-602 of
               the Arizona Business Corporation Act to be filed with the
               Arizona Corporation Commission with respect to the Series X
               Preferred Stock; and be it

                         FURTHER RESOLVED, that the President, any Vice
               President or the Treasurer, of the Company be, and he or she
               hereby is, authorized and empowered to execute, with such
               changes as they deem necessary, and cause to be filed with


     <PAGE>

               the Arizona Corporation Commission a statement with respect
               to the Series X Preferred Stock in accordance with Section
               10-602 of the Arizona Business Corporation Act; and

                    (3)  The preferences, limitations, relative rights and
          other terms of the Preferred Stock, Series X, presented to and
          approved at the aforesaid meeting of the Board of Directors of
          the corporation are attached hereto as Appendix A.

                    IN WITNESS WHEREOF, UniSource Energy Corporation has
          caused this Statement to be executed by a Vice President this    
          day of       ,     .
                 ------  ----

                                             UNISOURCE ENERGY CORPORATION


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


                                      A-2
     <PAGE>
                                                                APPENDIX A



                             UNISOURCE ENERGY CORPORATION

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

                              PREFERRED STOCK, SERIES X

             (PREFERENCES, LIMITATIONS, RELATIVE RIGHTS AND OTHER TERMS) 

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



               (a)  DESIGNATION.
                    -----------

               Then thousand (10,000) shares of the authorized Preferred
          Stock of the Corporation shall be designated Preferred Stock,
          Series X (the "Series X Preferred Stock") and shall have the
          preferences, limitations, relative rights and other terms set
          forth in paragraphs (a) through (h) hereof.

               (b)  DIVIDENDS.
                    ---------

                    (1)  General.  When, as and if declared by the Board of
          Directors and subject to the rights of the holders of any shares
          of any series of Preferred Stock or other stock ranking senior to
          the Series X Preferred Stock with respect to dividends, the
          Corporation shall pay, out of funds legally available therefor,
          dividends in cash to the holders of shares of Series X Preferred
          Stock at the applicable dividend rate or rates.

                    (2)  Dividend Rate.  The dividend rate with respect to
          each share of Series X Preferred Stock shall be equal to the
          greater of (A) $1.00 and (B) subject to the provision for
          adjustment set forth below, 10,000 times the aggregate per share
          amount of all dividends or other distributions (other than a
          dividend or distribution payable in shares of Common Stock or a
          subdivision of the outstanding shares of Common Stock, by
          reclassification or otherwise), paid or declared on the shares of
          Common Stock since the immediately preceding Dividend Payment
          Date (as hereinafter defined) or, with respect to the first
          Dividend Payment Date, since the Date of Issuance.  In the event
          the Company shall at any time after the Distribution Date (as
          defined in the Rights Agreement (as hereinafter defined)) 
          declare or pay any dividend on the shares of Common Stock payable
          in shares of Common Stock, or effect a subdivision or combination
          or consolidation of the outstanding shares of Common Stock, by
          reclassification or otherwise, into a greater or lesser number of
          shares of Common Stock, then, in each such case, the amount to
          which holders of shares of the Series X Preferred Stock were
          entitled immediately prior to such event under clause (B) of the
          preceding sentence shall be adjusted by multiplying such amount
          by a fraction, the numerator of which shall be the number of


     <PAGE>

          shares of Common Stock outstanding immediately after such event
          and the denominator of which shall be the number of shares of
          Common Stock that were outstanding immediately prior to such
          event.

                    (3)  Dividend Payment Dates.   Dividends on shares of
          the Series A Preferred Stock shall be payable, subject to the
          terms and conditions hereof, on each Dividend Payment Date,
          beginning on the second Dividend Payment Date following the Date
          of Issuance, to the registered holders of such shares as of the
          close of business on the Record Date (as hereinafter defined)
          with respect to such Dividend Payment Date.

                    (4)  Accrual of Dividends, etc.  Dividends shall begin
          to accrue on shares of the Series X Preferred Stock from the Date
          of Issuance thereto.  Dividends shall accrue on a daily basis
          whether or not at the time the Corporation shall have funds
          legally available for distributions to shareholders.  Accrued
          dividends for any period less than a full annual period shall be
          computed on the basis of a year deemed to consist of (A) 360 days
          and (B) twelve calendar months each, itself, deemed to consist of
          30 days; provided, however, that, if any part of the period for
          which accrued dividends are being computed shall consist of a
          portion of a calendar month, accrued dividends for such part of
          such period shall be computed on the basis of the actual number
          of days elapsed during such calendar month (excluding the date of
          payment, if any, in such calendar month) in relation to the full
          annual dividend accrued during a deemed 360-day year.  Accrued
          but unpaid dividends shall accumulate as of the Dividend Payment
          Date on which they first become payable, but no interest shall
          accrue on accumulated but unpaid dividends.

                    (5)  Parity Stock.  So long as any Series X Preferred
          Stock shall be outstanding, if (A) at any time the Corporation
          shall not have satisfied in full the cumulative dividends accrued
          on the Series X Preferred Stock for all Dividend Periods (as
          hereinafter defined) ended at or prior to such time and (B) at
          such time there shall have accrued and shall remain unpaid, for
          Dividend Periods ended at or prior to such time, dividends on
          shares of any other series of the Preferred Stock or any other
          class of stock in either case ranking as to dividends on a parity
          with the Series X Preferred Stock, any funds of the Corporation
          legally available for the purpose shall be allocated among all
          cumulative dividends accrued and unpaid, for all Dividend Periods
          ended at or prior to such time, on all such parity series of the
          Preferred Stock and such other parity stock in proportion to the
          respective amounts thereof.

                    (6)  Junior Securities.  So long as any Series X
          Preferred Stock shall be outstanding, the Corporation shall not
          (A) declare or pay or set apart for payment any dividends or make
          any other distributions on any Junior Securities (as hereinafter
          defined) or (B) make any payment on account of the redemption,
          purchase or other acquisition or retirement of any Junior
          Securities, unless, as of the date of any such declaration,
          setting aside or payment, as the case may be, there shall also
          have been declared and paid or set aside for payment dividends
          accumulated on the Series X Preferred Stock during all Dividend
          Periods ended on or prior to such date; provided, however, that
          the foregoing restriction shall not prohibit (X) any dividend
          payable solely in units of Junior Securities or (Y) the
          acquisition of any Junior Securities either (i) pursuant to any
          employee or director incentive or benefit plan or arrangement


                                      AA-2
     <PAGE>

          (including any employment, severance or consulting agreement), or
          any dividend or interest reinvestment or stock purchase plan, of
          the Corporation or any affiliate of the Corporation heretofore or
          hereafter adopted or (ii) in exchange solely for any other Junior
          Securities; and provided, further, that nothing herein shall
          prevent the simultaneous declaration or payment of dividends on
          both the Series X Preferred Stock and any Junior Securities if,
          at the time of such declaration, there are sufficient funds
          legally available to pay all dividends concurrently.

               (c)  DISSOLUTION.
                    -----------

                    (1)  General.  Subject to the rights of the holders of
          any stock of the Corporation ranking senior to or on a parity
          with the Series X Preferred Stock in respect of distributions
          upon the dissolution of the Corporation, upon any such
          dissolution (whether voluntary or involuntary), each holder of
          Series X Preferred Stock shall be entitled to be paid, out of the
          assets of the Corporation which remain after the payment and
          discharge of all liabilities of the Corporation, before any
          distribution or payment is made upon any Junior Securities, an
          amount in cash equal to the aggregate Dissolution Value (as
          hereinafter defined) of the shares of Series X Preferred Stock
          held by such holder plus an amount equal to accrued and unpaid
          dividends thereon to (but excluding) the date of payment, and the
          holders of Series X Preferred Stock shall not be entitled to any
          further payment.  

                    The Dissolution Value shall be an amount equal to the
          greater of (A) $10 per share and (B) subject to the provision for
          adjustment set forth below, above, 10,000 times the aggregate
          amount to be distributed per share to the holders of the shares
          of Common Stock, plus, in either case an amount equal to accrued
          and unpaid dividends to the date of payment.  If the Corporation
          shall at any time after the Distribution Date declare or pay any
          dividend on the shares of Common Stock payable in shares of
          Common Stock, or effect a subdivision or combination or
          consolidation of the outstanding shares of Common Stock, by
          reclassification or otherwise, into a greater or lesser number of
          shares of Common Stock, then, in each such case, the aggregate
          amount to which holders of shares of the Series X Preferred Stock
          were entitled immediately prior to such event under clause (B) of
          the preceding sentence, shall be adjusted by multiplying such
          amount by a fraction the numerator of which shall be the number
          of shares of Common Stock outstanding immediately after such
          event and the denominator of which shall be the number of shares
          of Common Stock outstanding immediately prior to such event.

                    (2)  Parity Stock.  If, upon any such dissolution of
          the Corporation, the Corporation's assets available to be
          distributed among the holders of the Series X Preferred Stock and
          any other series of the Preferred Stock and any other stock of
          the corporation in either case ranking as to any such
          distribution on a parity with the Series X Preferred Stock are
          insufficient to permit payment to such holders of the aggregate
          amount which they are entitled to be paid, then the entire assets
          available to be distributed to the Corporation's shareholders
          shall be allocated among all dissolution requirements on all such
          parity series of Preferred Stock and such other parity stock in
          proportion to the respective amounts then required for the
          satisfaction thereof.


                                      AA-3
     <PAGE>

                    (3)  Notice.   Not less than 30 days prior to the
          payment date stated therein, the Corporation shall mail written
          notice of any such dissolution to each record holder of Series X
          Preferred Stock, the payment date or dates when, and the place or
          places where, the amounts distributable to holders of Series X
          Preferred Stock in such circumstances shall be payable, and
          stating that such payment will be made only after the surrender
          of certificates representing shares of Series X Preferred Stock;
          provided, however, that a failure to give notice as provided
          above or any defect therein shall not affect the Corporation's
          ability to consummate a dissolution of the Corporation, whether
          voluntary or involuntary.

                    (4)  Other Transactions. Neither the consolidation,
          merger or other combination of the Corporation with or into any
          other entity or entities (whether or not the Corporation is the
          surviving entity), nor the sale, transfer or other disposition by
          the Corporation of all or any part of its assets, nor the
          reduction of the capital stock of the Corporation nor any other
          form of recapitalization or reorganization affecting the
          Corporation shall be deemed to be a dissolution of the
          Corporation within the meaning of this paragraph (b).

               (d)  REDEMPTION.
                    ----------

                    (1)  General.  The outstanding shares of Series X
          Preferred Stock may be redeemed, at the option of the
          Corporation, in whole at any time or, in part from time to time,
          at a price per share equal to (A) 100% of the product of the
          Adjustment Number (as hereinafter defined) times the Average
          Market Value (as hereinafter defined) of the Common Stock, plus
          (B) an amount equal to accrued but unpaid dividends thereon to
          (but excluding) the date fixed for redemption.  The "Adjustment
          Number" shall be 10,000; provided, however, that if the
          Corporation shall at any time after the Distribution Date declare
          or pay any dividend on the shares of Common Stock payable in
          shares of Common Stock, or effect a subdivision or combination or
          consolidation of the outstanding shares of Common Stock, by
          reclassification or otherwise, then in each such case the
          Adjustment Number in effect immediately prior to such event shall
          be adjusted by multiplying such Adjustment Number by a fraction,
          the numerator of which shall be the number of shares of Common
          Stock outstanding immediately after such event, and the
          denominator of which is the number of shares of Common Stock that
          were outstanding immediately prior to such event.  The "Average
          Market Value" shall be the average of the closing sale prices of
          a share of the Common Stock during the 30-day period immediately
          preceding the date before the redemption date on the Composite
          Tape maintained by the Consolidated Tape Association, or, if such
          stock is not quoted on the Composite Tape, on the New York Stock
          Exchange, or, if such stock is not listed on such Exchange, on
          the principal United States securities exchange registered under
          the Securities Exchange Act of 1934, as amended, on which such
          stock is listed, or, if such stock is not listed on any such
          exchange, the average of the closing sale prices with respect to
          a share of Common Stock during such 30-day period, as quoted on
          the National Association of Securities Dealers, Inc. Automated
          Quotation System or any system then in use, or if no such
          quotations are available, the fair market value of a share of the
          Common Stock, as determined by the Board of Directors in good
          faith.


                                      AA-4
     <PAGE>

                    If less than all of the outstanding shares of the
          Series X Preferred Stock are to be redeemed, the Corporation
          shall select the shares to be redeemed by lot or by any other
          method as shall be determined by the Corporation to be equitable.

                    (2)  Notice of Redemption.  Unless otherwise required
          by applicable law, notice of redemption shall be sent to the
          holders of the shares of Series X Preferred Stock to be redeemed
          at the addresses shown on the books of the Corporation by first
          class mail, postage prepaid, mailed not less than thirty (30)
          days nor more than sixty (60) days prior to the redemption date.
          Each such notice shall state (A) the redemption date, (B) the
          total number of shares of Series X Preferred Stock to be redeemed
          and, if fewer than all the shares held by such holder are to be
          redeemed, the number of such shares to be redeemed, (C) the
          redemption price, (D) the place or places where certificates for
          such shares are to be surrendered for payment of the redemption
          price, (E) that dividends on the shares to be redeemed will cease
          to accrue on such redemption date and (F) such other matters as
          the Corporation shall deem desirable or appropriate.
          Notwithstanding the foregoing, the failure so to mail any such
          notice of redemption or any defect therein or in the mailing
          thereof shall not affect the validity of the redemption
          proceedings with respect to shares as to which there shall have
          been no such failure or defect.  

                    With respect to any notice of redemption of shares of
          Series X Preferred Stock at the option of the Corporation,
          unless, upon the giving of such notice, such shares shall be
          deemed to have been redeemed and to be no longer outstanding in
          accordance with and subject to subparagraph (4) of this paragraph
          (d), such notice may state that such redemption shall be
          conditional upon the setting aside by the Corporation or the
          delivery to a Redemption Agent (as hereinafter defined), on or
          prior to the date fixed for such redemption, of legally available
          funds sufficient to pay the redemption price of such shares, and
          that if such funds shall not have been so set aside or delivered
          such notice shall be of no force or effect and the Corporation
          shall not be required to redeem such shares. In the event that
          such notice of redemption contains such a condition and such
          funds are not so set aside or delivered, the redemption shall not
          be made and within a reasonable time thereafter notice shall be
          given that such funds were not so set aside or delivered and such
          redemption was not required to be made.

                    Notice of redemption having been given as aforesaid,
          and the conditions, if any, set forth in such notice having been
          satisfied, (A) the shares of Series X Preferred Stock so to be
          redeemed shall, on the date fixed for redemption and upon
          surrender of certificates for such shares in accordance with such
          notice, be redeemed at the redemption price therein specified,
          (B) from and after such date (unless, in the case of an
          unconditional notice of redemption, the Corporation shall have
          failed to set aside or deliver to a Redemption Agent moneys to
          pay the redemption price and accrued and unpaid dividends to the
          redemption date) dividends shall cease to accrue on such shares
          and (C) no interest shall accrue on the redemption price on or
          after the date fixed for redemption.

                    (3)  Redemption Payment.  Any shares of Series X
          Preferred Stock shall be deemed to have been redeemed and to be
          no longer outstanding capital stock of the Corporation, and all
          rights of the holders of such shares (except only the right to


                                      AA-5
     <PAGE>

          receive the redemption price thereof and (without duplication)
          dividends accrued and to accrue thereon to the date of the
          redemption thereof pursuant to this paragraph (d)) shall
          terminate, on the earlier of (A) the date on or after the date
          fixed for the redemption of such shares on which the Corporation
          shall have set aside money sufficient to pay the redemption price
          thereof and (B) the date of an irrevocable deposit with a
          Redemption Agent, in trust, of money in an amount which shall be
          sufficient to pay when due the redemption price of such shares
          and (without duplication) dividends accrued and to accrue thereon
          to (but excluding) the date fixed for the redemption thereof;
          provided, however, that in the case of the provision for
          redemption of less than all shares of Series X Preferred Stock
          then outstanding, such shares shall have been selected for
          redemption as provided herein and the notice of such redemption
          shall have been duly given or irrevocable authority shall have
          been given by the Corporation to such Redemption Agent to give
          such notice, under arrangements satisfactory to such Redemption
          Agent; and provided, further, that if such deposit shall have
          been made prior to the date fixed for the redemption of such
          shares, the Corporation shall have delivered to such Redemption
          Agent written instructions stating that the money so deposited
          with such Redemption Agent shall be held by such Redemption
          Agent, in trust, as hereinafter provided.

                    The money deposited with a Redemption Agent pursuant to
          this subparagraph (4) of paragraph (d) shall not be withdrawn or
          used for any purpose other than, and shall be held in trust for,
          the payment of the redemption price of the shares of Series X
          Preferred Stock in respect of which such deposit was made and
          (without duplication) dividends accrued and to accrue thereon to
          the date fixed for the redemption thereof; provided, however,
          that any of such moneys so held by such Redemption Agent on the
          date fixed for the redemption of such shares in excess of the
          amount required to pay the redemption price thereof and (without
          duplication) dividends accrued and unpaid thereon to (but
          excluding) the date fixed for the redemption thereof shall be
          paid over to the Corporation free and clear of any trust, lien or
          pledge.

                    Any money remaining set aside by the Corporation or on
          deposit with a Redemption Agent and unclaimed by the registered
          holders of shares so called for redemption at the end of a period
          of one year after the date fixed for redemption shall be paid
          over to the Corporation and/or returned to its general funds and
          thereafter such holders shall look only to the Corporation for
          the satisfaction of such rights, if any, as they may have to the
          payment of the redemption price of such shares and (without
          duplication) dividends accrued and unpaid to (but excluding) the
          date fixed for redemption.

               (e)  RANKING; PRO RATA SHARING; RETIREMENT.

                    (1)  Ranking.  The Series X Preferred Stock shall rank
          senior to the Common Stock as to the payment of dividends and as
          to the distribution of assets on liquidation, dissolution or
          winding-up of the Corporation, and, unless otherwise provided in
          the Restated Articles of Incorporation, as the same may be
          amended, including one or more amendments relating to one or more
          subsequent series of Preferred Stock, the Series X Preferred


                                      AA-6
     <PAGE>

          Stock shall rank on a parity with all other series of Preferred
          Stock as to the payment of dividends and as to the distribution
          of assets on dissolution.

                    (2)  Pro Rata Sharing.  Except to the extent otherwise
          provided in the Restated Articles of Incorporation, as the same
          may be amended, all payments to be made in respect of the shares
          of Series X Preferred Stock and any other stock ranking on a
          parity with the Series X Preferred Stock with respect to payments
          of such character shall be made pro rata, so that amounts paid
          per share on the Series X Preferred Stock and such other stock
          shall in all cases bear to each other the same ratio that the
          amounts then payable per share on the shares of the Series X
          Preferred Stock and such other stock bear to each other.

                    (3)  Retirement.  Any shares of Series X Preferred
          Stock redeemed or converted as provided hereby shall be retired
          as shares of Series X Preferred Stock and be restored to the
          status of authorized but unissued shares of Preferred Stock,
          undesignated as to series, and may thereafter be reissued as
          permitted by applicable law.

               (f)  VOTING RIGHTS.

                    (1)  General.  The holders of Series X Preferred Stock
          shall be entitled to vote on all matters submitted to a vote of
          the holders of Common Stock, voting together with the holders of
          Common Stock as one class.  Each share of Series X Preferred
          Stock shall be entitled to 10,000 votes;  provided, however, that
          if the Corporation shall at any time after the Distribution Date
          declare or pay any dividend on the shares of Common Stock payable
          in shares of Common Stock, or effect a subdivision or combination
          or consolidation of the outstanding shares of Common Stock, by
          reclassification or otherwise, into a greater or lesser number of
          shares of Common Stock, then, in each such case, the number of
          votes to which each share of the Series X Preferred Stock was
          entitled immediately prior to such event shall be adjusted by
          multiplying such number by a fraction the numerator of which
          shall be the number of shares of Common Stock outstanding
          immediately after such event and the denominator of which shall
          be the number of shares of Common Stock outstanding immediately
          prior to such event.

                    (2)  No Special Rights.  Except to the extent otherwise
          specifically provided by applicable law or set forth in
          subparagraph (1) of this paragraph (f), holders of Series X
          Preferred Stock shall have no special voting rights and their
          consent shall not be required for the taking of any corporate
          action.

               (g)  NOTICES.

                    Except as otherwise expressly provided hereunder, all
          notices referred to herein shall be in writing and shall be
          sufficiently given, and shall be deemed given, if and when
          mailed, first class postage prepaid, (1) to the Corporation, at
          its principal executive offices and (2) to any shareholder, at
          such holder's address as it appears in the stock records of the
          Corporation (unless otherwise indicated by such holder).


                                      AA-7
     <PAGE>

               (h)  DEFINITIONS.

                    "Common Stock" means the Corporation's common stock,
          without par value.

                    "Date of Issuance", as to any share of Series X
          Preferred Stock, means the date on which the Corporation
          initially issues such share, irrespective of the subsequent
          delivery of certificates for such share upon registration of
          transfer or exchange.

                    "Dividend Payment Date", as to the Series X Preferred
          Stock, means January 1, April 1, July 1 and October 1.

                    "Dividend Period", as to the shares of the Series X
          Preferred Stock or any other series of the Preferred Stock or of
          any other class of stock in either case ranking as to dividends
          on a parity with the Series X Preferred Stock, means the period
          commencing on any dividend payment date prescribed for such
          series and ending on the day next preceding the next succeeding
          dividend payment date for such series, except that the initial
          Dividend Period for any particular shares of any series or class
          shall be the period commencing on the date or dates from which
          dividends on such shares shall be cumulative and ending on the
          day next preceding the first dividend payment date prescribed for
          such shares.

                    "Junior Securities" means the Common Stock and (1) for
          purposes of clause (A) in subparagraph (6) of paragraph (b)
          above, any other class or series of stock ranking junior to the
          Series X Preferred Stock in right of payment of dividends or (2)
          for all other purposes, any other class or series of stock
          ranking junior to the Series X Preferred Stock in right of
          payment of amounts distributable upon dissolution.

                    "Record Date", as to any Dividend Payment Date, means
          the fifteenth day of the calendar month next preceding such
          Dividend Payment Date.

                    "Redemption Agent" means any bank or trust company
          having a combined capital and surplus of at least $2,000,000 and
          doing business in the continental United States, selected by the
          Corporation in connection with the redemption of any shares of
          Series X Preferred Stock.

                    "Rights Agreement" means the rights Agreement, dated as
          of March 5, 1999, between the Corporation and               , as
                                                        --------------
          Rights Agent, as such agreement may be amended and supplemented.

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


                                      AA-8
     <PAGE>
                                                                EXHIBIT B


                              Form of Right Certificate


          Certificate No. R-                                         Rights
                                                               -----


               NOT EXERCISABLE AFTER MARCH 31, 2009, OR EARLIER IF
               REDEMPTION OR EXCHANGE OCCURS.  THE RIGHTS ARE SUBJECT
               TO REDEMPTION OR EXCHANGE ON THE TERMS SET FORTH IN THE
               RIGHTS AGREEMENT.  RIGHTS BENEFICIALLY OWNED BY AN
               ACQUIRING PERSON OR AN AFFILIATE OR ASSOCIATE OF AN
               ACQUIRING PERSON (AS SUCH TERMS ARE DEFINED IN THE
               RIGHTS AGREEMENT) AND ANY TRANSFEREE OF SUCH RIGHTS
               SHALL BECOME NULL AND VOID.


                                  Right Certificate
                                  -----------------


               This certifies that                     , or registered 
                                   --------------------
          assigns, is the registered owner of the number of Rights set
          forth above, each of which entitles the owner thereof, subject to
          the terms, provisions and conditions of the Rights Agreement,
          dated as of March 5, 1999 (as amended from time to time, the
          "Rights Agreement"), between UniSource Energy Corporation, an
          Arizona corporation (the "Company"), and The Bank of New York, a
          New York banking corporation (the "Rights Agent"), to purchase,
          subject to any required regulatory approval, from the Company
          at any time after the Distribution Date (as such term is defined
          in the Rights Agreement) and prior to 5:00 P.M., New York City
          time, on March 31, 2009 (subject to earlier redemption or
          exchange of the Rights by the Company, as set forth in the
          Rights Agreement), at the shareholders services office of the
          Rights Agent, or at the office of its successor as Rights Agent,
          one ten-thousandth of a fully paid nonassessable share of 
          Series A Preferred Stock, without par value, (the "Preferred
          Stock"), of the Company, at a purchase price of $50.00 per one
          ten-thousandth of a share of Preferred Stock (the "Purchase Price"),
          upon presentation and surrender of this Right Certificate with
          the Form of Election to Purchase and related Certificate duly
          executed.  The number of Rights evidenced by this Right
          Certificate (and the number of ten-thousandths of a share of
          Preferred Stock which may be purchased upon exercise hereof) set
          forth above, and the Purchase Price set forth above, are the
          number and Purchase Price as of [           ,    ], based on the
                                           -----------  ---
          shares of Preferred Stock as constituted at such date.  As
          provided in the Rights Agreement, the Purchase Price and the
          number or amount of securities or other assets which may be
          purchased upon the exercise of the Rights evidenced by this Right
          Certificate are subject to modification and adjustment upon the
          happening of certain events.


     <PAGE>

               This Right Certificate is subject to all of the terms,
          provisions and conditions of the Rights Agreement, which terms,
          provisions and conditions are hereby incorporated herein by
          reference and made a part hereof and to which Rights Agreement
          reference is hereby made for a full description of the rights,
          limitations of rights, obligations, duties and immunities
          hereunder of the Rights Agent, the Company and the holders of the
          Right Certificates.  Copies of the Rights Agreement are on file
          at the principal executive offices of the Company and the
          above-mentioned offices of the Rights Agent.

               This Right Certificate, with or without other Right
          Certificates, upon surrender at either the office or offices of
          the Rights Agent designated for such purpose, may be exchanged
          for another Right Certificate or Right Certificates of like tenor
          and date evidencing Rights entitling the holder to purchase a
          like aggregate number of shares of Preferred Stock as the Rights
          evidenced by the Right Certificate or Right Certificates
          surrendered shall have entitled such holder to purchase.  

               Notwithstanding any provision of this Right Certificate to
          the contrary, the Rights evidenced by this Right Certificate
          shall not be exercisable (a) unless and until any regulatory
          approvals required for the issuance and/or sale of securities
          upon such exercise have been obtained, (b) if the exercise
          thereof, or the issuance and/or sale of the securities to be
          purchased upon such exercise, would violate or contravene any
          applicable law, regulation  or administrative or judicial order
          or (c) in any jurisdiction if any requisite filings under any
          applicable securities laws shall not have been made or become
          effective in such jurisdiction.

               Subject to the provisions of the Rights Agreement, the
          Rights evidenced by this Certificate may be redeemed or exchanged
          by the Company.

               If this Right Certificate shall be exercised in part, the
          holder shall be entitled to receive upon surrender hereof another
          Right Certificate or Right Certificates for the number of whole
          Rights not exercised.  No fractional securities will be issued
          upon the exercise of any Right or Rights evidenced hereby (other
          than fractions which are integral multiples of one ten-thousandth
          of such security, which may, at the election of the Company, be
          evidenced by depositary receipts), but in lieu thereof a cash
          payment will be made, as provided in the Rights Agreement.

               No holder of this Right Certificate shall be entitled to
          vote or receive dividends or be deemed for any purpose the holder
          of shares of the Preferred Stock or of any other securities of
          the Company which may at any time be issuable on the exercise
          hereof, nor shall anything contained in the Rights Agreement or
          herein be construed to confer upon the holder hereof, as such,
          any of the rights of a shareholder of the Company or any right to
          vote for the election of directors or upon any matter submitted
          to shareholders at any meeting thereof, or to give or withhold
          consent to any corporate action, or to receive notice of meetings
          or other actions affecting shareholders (except as provided in
          the Rights Agreement), or to receive dividends or subscription
          rights, or otherwise, until the Right or Rights evidenced by this
          Right Certificate shall have been exercised as provided in the
          Rights Agreement.


                                      B-2
     <PAGE>

               This Right Certificate shall not be valid or obligatory for
          any purpose until it shall have been countersigned by the Rights
          Agent.

               WITNESS the facsimile signature of the proper officers of
          the Company and its corporate seal.

          Dated as of [              , 19   ].
                       --------------    ---


          ATTEST:                       UNISOURCE ENERGY CORPORATION


                                             By:
          -----------------------                ------------------------


          Countersigned:


          By:
              ----------------------
               Authorized Signature


                                      B-3
     <PAGE>


                      Form of Reverse Side of Right Certificate

                                  FORM OF ASSIGNMENT

                          (To be executed by the registered
                           holder if such holder desires to
                           transfer the Right Certificate.)


               FOR VALUE RECEIVED                                hereby 
                                  ------------------------------
          sells, assigns and transfers unto                            - 
                                            --------------------------
          (Please print name and address of transferee) - this Right
          Certificate, together with all right, title and interest
          therein,and does hereby irrevocably constitute and appoint 
                           Attorney, to transfer the within Right 
          ----------------
          Certificate on the books of the within-named Company, with full
          power of substitution.


          Dated:                     , 19
                ---------------------    ---



                                                  -------------------------
                                                         Signature


          Signature Guaranteed:

               Signatures must be guaranteed by an "eligible guarantor
          institution" meeting the requirements of the Registrar, which
          requirements include membership or participation in the Security
          Transfer Agent Medallion Program ("STAMP") or such other
          "signature guarantee program" as may be determined by the
          Registrar in addition to, or in substitution for, STAMP, all in
          accordance with the Securities Exchange Act of 1934, as amended.


                                      B-4
     <PAGE>


                                     Certificate
                                     -----------


               The undersigned hereby certifies, for the benefit of the
          Company and other holders of Rights, by checking the appropriate
          boxes, that:

               (1)  this Rights Certificate [ ] is [ ] is not being sold,
          assigned and transferred by or on behalf of a Person who is or
          was an Acquiring Person or an Affiliate or Associate of any such
          Acquiring Person (as such terms are defined pursuant to the
          Rights Agreement); and

               (2)  after due inquiry and to the best knowledge of the
          undersigned, it [ ] did [ ] did not acquire the Rights evidenced
          by this Right Certificate from any Person who is, was or
          subsequently became an Acquiring Person or an Affiliate or
          Associate of Acquiring Person.

          Dated:               , 19
                  -------------    ---            ---------------------
                                                    Signature


          Signature Guaranteed:

               Signatures must be guaranteed by an "eligible guarantor
          institution" meeting the requirements of the Registrar, which
          requirements include membership or participation in the Security
          Transfer Agent Medallion Program ("STAMP") or such other
          "signature guarantee program" as may be determined by the
          Registrar in addition to, or in substitution for, STAMP, all in
          accordance with the Securities Exchange Act of 1934, as amended.


                                      B-5            
     <PAGE>

              Form of Reverse Side of Right Certificate -- continued 


                             FORM OF ELECTION TO PURCHASE
                             ----------------------------

                         (To be executed if holder desires to
                           exercise the Right Certificate.)

          To:

               The undersigned hereby irrevocably elects to exercise 
                             Rights represented by this Right Certificate 
          ------------------
          to purchase shares of the Preferred Stock issuable upon the
          exercise of such Rights and requests that certificates for such
          shares of Preferred Stock be issued in the name of:

          Please insert social security or other identifying number

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

          (Please print name and address)

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

          If such number of Rights shall not be all the Rights evidenced by
          this Right Certificate, a new Right Certificate for the balance
          remaining of such Rights shall be registered in the name of and
          delivered to:

          Please insert social security or other identifying number

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

          (Please print name and address)

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

          Dated:               , 19
                  -------------    ---



                                             ------------------------------
                                                       Signature


          Signature Guaranteed:

               Signatures must be guaranteed by an "eligible guarantor
          institution" meeting the requirements of the Registrar, which
          requirements include membership or participation in the Security
          Transfer Agent Medallion Program ("STAMP") or such other
          "signature guarantee program" as may be determined by the
          Registrar in addition to, or in substitution for, STAMP, all in
          accordance with the Securities Exchange Act of 1934, as amended.


                                      B-6 
     <PAGE>

              Form of Reverse Side of Right Certificate -- continued


                                     Certificate
                                     -----------


               The undersigned hereby certifies, for the benefit of the
          Company and other holders of Rights, by checking the appropriate
          boxes, that:

               (1)  the Rights evidenced by this Right Certificate [ ] are
          [ ] are not being exercised by or on behalf of a Person who is or
          was an Acquiring Person or an Affiliate or Associate of any such
          Acquiring Person (as such terms are defined pursuant to the
          Rights Agreement); and 

               (2)  after due inquiry and to the best knowledge of the
          undersigned, it [ ] did [ ] did not acquire the Rights evidenced
          by this Right Certificate from any Person who is, was or became
          an Acquiring Person or an Affiliate or Associate of an Acquiring
          Person.


          Dated:              , 19
                  ------------    ---        ------------------------------
                                                       Signature


          Signature Guaranteed:

               Signatures must be guaranteed by an "eligible guarantor
          institution" meeting the requirements of the Registrar, which
          requirements include membership or participation in the Security
          Transfer Agent Medallion Program ("STAMP") or such other
          "signature guarantee program" as may be determined by the
          Registrar in addition to, or in substitution for, STAMP, all in
          accordance with the Securities Exchange Act of 1934, as amended.


                                      B-7
     <PAGE>

              Form of Reverse Side of Right Certificate -- continued


                                        NOTICE
                                        ------


               The signature in the foregoing Forms of Assignment and
          Election to Purchase and Certificate must conform to the name as
          written upon the face of this Right Certificate in every
          particular, without alteration or enlargement or any change
          whatsoever.


                                      B-8




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