MERRILL LYNCH & CO INC
8-A12B, 1999-05-25
SECURITY BROKERS, DEALERS & FLOTATION COMPANIES
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<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION

                             Washington, D.C. 20549

                                _______________

                                    FORM 8-A

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

                           Merrill Lynch & Co., Inc.
                         -----------------------------
             (Exact name of registrant as specified in its charter)


                 Delaware                                      13-2740599
                 --------                                      ----------
 (State of incorporation or organization)                 (I.R.S. Employer
                                                         Identification No.)
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<S>                                             <C>

          World Financial Center
          North Tower
          250 Vesey Street
          New York, New York                                     10281
          -----------------------                                -----
(Address of principal executive offices)                      (Zip Code)

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

Securities Act registration statement file number to which this form relates:
333-68747
- ---------

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 registered
     -------------------               ------------------------------

   Russell 2000(R) Index*                 American
   Call Warrants Expiring                 Stock
   May   , 2001                           Exchange

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

                                     None
- --------------------------------------------------------------------------------
                               (Title of class)

*The use of and reference to the term "Russell 2000 Index" herein has been
consented to by Frank Russell Company.
<PAGE>

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


          The description of the general terms and provisions of the Russell
2000 Index Call Warrants expiring May , 2001 to be issued by Merrill Lynch &
Co., Inc. (the "Warrants") set forth in the Preliminary Prospectus Supplement
dated May 19, 1999, and the Prospectus dated May 6, 1999, attached hereto as
Exhibit 99 (A) are hereby incorporated by reference and contain certain proposed
terms and provisions. The description of the Warrants contained in the
Prospectus Supplement to be filed pursuant to Rule 424(b) under the Securities
Act of 1933, as amended, under Registration Statement Number 333-68747 which
will contain the final terms and provisions of the Warrants, including the
expiration date of the Warrants, is hereby deemed to be incorporated by
reference into this Registration Statement and to be a part hereof.

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

       99 (A)  Preliminary Prospectus Supplement dated May 19, 1999, and
               Prospectus dated May 6, 1999, (incorporated by reference to
               registrant's filing pursuant to Rule 424 (b)).

       99 (B)  Form of Warrant.

       99 (C)  Form of Warrant Agreement between Merrill Lynch & Co., Inc. and
               Citibank, N.A., the Warrant Agent, dated as of May   , 1999.

          Other securities issued by Merrill Lynch & Co., Inc. are listed on the
American Stock Exchange.

                                       2
<PAGE>

                                   SIGNATURE

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

                              MERRILL LYNCH & CO., INC.



                              By: /s/    Lawrence M. Egan, Jr
                                  ---------------------------
                                         Lawrence M. Egan, Jr.
                                          Assistant Secretary

Date:  May 25, 1999

                                       3

<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549




                           MERRILL LYNCH & CO., INC.




                                    EXHIBITS
                                       TO
                          FORM 8-A DATED MAY 25, 1999
<PAGE>

                               INDEX TO EXHIBITS
                               -----------------

Exhibit No.
- ----------

99 (A)  Preliminary Prospectus Supplement dated
        May 19, 1999, and Prospectus dated
        May 6, 1999 (incorporated by reference to
        registrant's filing pursuant to Rule 424 (b)).

99 (B)  Form of Warrant.

99 (C)  Form of Warrant Agreement between Merrill Lynch & Co.,
        Inc. and Citibank, N.A., as Warrant Agent, dated as of May   , 1999.



                                       2
<PAGE>

                                                                   Exhibit 99(b)


THIS WARRANT IS A GLOBAL WARRANT WITHIN THE MEANING OF THE WARRANT AGREEMENT
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A
NOMINEE THEREOF.  UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR
WARRANTS IN CERTIFICATED FORM, THIS WARRANT MAY NOT BE TRANSFERRED EXCEPT AS A
WHOLE BY THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO A
NOMINEE OF DTC OR BY DTC OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITORY OR A
NOMINEE OF SUCH SUCCESSOR DEPOSITORY.  UNLESS THIS WARRANT IS PRESENTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY WARRANT ISSUED IS REGISTERED IN THE NAME
OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE
OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS
THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

No. R-                                                      CUSIP No. 590188 421

                          GLOBAL WARRANT CERTIFICATE

        Representing up to              Russell 2000 Index Call Warrants
                             Expiring May    , 2001

                           MERRILL LYNCH & CO., INC.

          This certifies that CEDE & Co. or registered assigns is the registered
Holder of                Russell 2000 Index Call Warrants Expiring May   , 2001
(the "Warrants") or such lesser amount as is indicated in the records of
Citibank, N.A., as Warrant Agent. Each Warrant entitles the beneficial owner
thereof, subject to the provisions contained herein and in the Warrant Agreement
referred to below, to receive from Merrill Lynch & Co., Inc. (the "Company") the
cash settlement amount, if any, (the "Cash Settlement Amount") specified in
Section 2.02(e), or the Alternative Settlement Amount specified in Section
2.04(a), of the Warrant Agreement.  The Holder hereof shall not be entitled to
any interest on any Cash Settlement Amount to which it is otherwise entitled
(unless the Company shall default in the payment of such Cash Settlement
Amount).  The Warrants may be exercised on any New York Business Day from their
date of issuance until 1:00 P.M., New York City time, on the earlier of (i) the
second scheduled Index Calculation Day immediately preceding May , 2001 (the
"Expiration Date") or (ii) the date of earlier automatic exercise as further
described below and as provided in the Warrant Agreement. Except in the cases of
automatic exercise or cancellation, not fewer than 100 Warrants may be exercised
by or on behalf of a beneficial owner on any one day. All exercises of Warrants
(other than on automatic exercise) are subject, at the Company's option, to the
limitation that not more than 20% of the

                                       3
<PAGE>

Warrants originally issued (provided, however, that no more than 10% of the
Warrants originally issued shall be exercised for the account of any beneficial
owner) may be exercised on any Exercise Date and not more than 10% of the
Warrants originally issued may be exercised by or on behalf of any beneficial
owner, either individually or in concert with any other beneficial owner, on any
Exercise Date. References herein to "U.S. dollars", "U.S.$" or "$" are to the
currency of the United States of America. The term "New York Business Day", as
used herein, means any day other than a Saturday or Sunday or a day on which
commercial banks in The City of New York are required or authorized by law or
executive order to be closed.

          This Global Warrant Certificate is issued under and in accordance with
the Warrant Agreement, dated as of May   , 1999 (the "Warrant Agreement"),
between the Company and the Warrant Agent, and is subject to the terms and
provisions contained in the Warrant Agreement, to all of which terms and
provisions all beneficial owners of the Warrants evidenced by this Global
Warrant Certificate and the Holder of this Global Warrant Certificate consent by
acceptance hereof by the Depository (as defined below).  Copies of the Warrant
Agreement are on file at the Warrant Agent office of the Warrant Agent in The
City of New York.  Except as provided in the Warrant Agreement, beneficial
owners of the Warrants evidenced by this Global Warrant Certificate shall not be
entitled to receive definitive Warrants evidencing their Warrants.  Warrants
shall be held through a depository selected by the Company which initially is
The Depository Trust Company (the "Depository", which term, as used herein,
includes any successor depository selected by the Company as further provided in
the Warrant Agreement).

          Capitalized terms included herein but not defined herein have the same
meaning assigned thereto in the Warrant Agreement.

          Subject to the provisions hereof and of the Warrant Agreement, each
Warrant evidenced hereby may be irrevocably exercised at the option of the
Holder in whole but not in part on any New York Business Day from its date of
issuance until 1:00 P.M., New York City time, on the second scheduled Index
Calculation Day immediately preceding the Expiration Date.  Except in the cases
of automatic exercise or cancellation, each Warrant evidenced hereby may be
exercised by written notice to the Warrant Agent from a Depository Participant
acting on behalf of the beneficial owner of such Warrant and upon receipt by the
Warrant Agent through delivery of such Warrant free on the records of the
Depository to the Warrant Agent's Depository Participant Account (entitled
Citibank, N.A. Corporate Trust Warrant Agent Account, No. 2659, or such other
account of the Warrant Agent at the Depository as the Warrant Agent shall
designate in writing to the Company and to the Depository (the "Warrant
Account")) ("Proper Delivery"); provided, however, that notices of exercise are
subject to rejection by the Warrant Agent as provided in the Warrant Agreement.

          The Warrant Agent shall promptly cause its records to be marked to
reduce the number of Unexercised Warrants evidenced by this Global Warrant
Certificate by the number of Warrants transferred to the Warrant Account from
time to time and for which payment of the Cash Settlement Amount is made as
provided above.

                                       4
<PAGE>

          All Warrants for which the Warrant Agent has not received a valid
Exercise Notice at or prior to 1:00 P.M., New York City time, on (i) the second
scheduled Index Calculation Day immediately preceding the Expiration Date or
(ii) the close of business on the Delisting Date shall be automatically
exercised, without any required delivery of notice of exercise or delivery of
the Warrants from any relevant Depository Participant to the Warrant Agent.  The
first New York Business Day preceding such Expiration Date or Delisting Date, as
the case may be, shall be the Exercise Date for such automatically exercised
Warrants.  The Company shall advise the Warrant Agent of the date of any
expected delisting or permanent suspension of trading of the Warrants as soon as
is practicable and shall immediately inform the Warrant Agent after the Company
has received notice that such delisting or suspension has occurred and that the
Warrants are not accepted for listing on another Self-Regulatory Organization,
but in no event will such notice be given to the Warrant Agent later than 5:00
P.M., New York City time, on the New York Business Day preceding the date that
such delisting or suspension occurs.

          The Company, the Warrant Agent and any agent of the Company or the
Warrant Agent may deem and treat the registered owner hereof as the absolute
owner of the Warrants evidenced hereby (notwithstanding any notation of
ownership or other writing hereon) for any purpose and as the person entitled to
exercise the rights represented by the Warrants evidenced hereby, and neither
the Company nor the Warrant Agent nor any agent of the Company or the Warrant
Agent shall be affected by any notice to the contrary, subject to certain
provisions of the Warrant Agreement, except that the Company and the Warrant
Agent shall be entitled to rely on and act pursuant to instructions of
Depository Participants as contemplated herein and in the Warrant Agreement.

          Subject to the terms of the Warrant Agreement and certain restrictions
set forth above, upon due presentment for registration of transfer of this
Global Warrant Certificate at the Warrant Agent Office of the Warrant Agent in
New York City, the Company shall execute and the Warrant Agent shall
authenticate and deliver in the name of the designated transferee a new Global
Warrant Certificate of like tenor and evidencing a like number of Unexercised
Warrants as evidenced by this Global Warrant Certificate at the time of such
registration of transfer, which shall be issued to the designated transferee in
exchange for this Global Warrant Certificate, subject to the limitations
provided in the Warrant Agreement, without charge.

          This Global Warrant Certificate and the Warrant Agreement are subject
to amendment as provided in the Warrant Agreement.

          This Global Warrant Certificate shall not be valid or obligatory for
any purpose until authenticated by the Warrant Agent.

                                       5
<PAGE>

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

                              MERRILL LYNCH & CO., INC.

                              By _____________________________
                                         Treasurer


[SEAL]                         Attest _________________________
                                       Secretary

This is one of the Warrants
referred to in the within-mentioned
Warrant Agreement:

CITIBANK, N.A. as Warrant Agent


By _________________________
      Authorized Officer

Date: May   , 1999

                                       6
<PAGE>

                 Form of Transfer of Global Warrant Certificate

Citibank, N.A., as Warrant Agent
Corporate Trust Services
111 Wall Street
New York, New York 10043


          , the registered Holder of the Global  Warrant Certificate

representing all unexercised Merrill Lynch &  Co., Inc. Russell 2000 Index Call

Warrants, Expiring May    , 2001, hereby requests the transfer of such Global

Warrant Certificate to


                              [NAME OF REGISTERED HOLDER]

Dated:
                                      By:

                                       7

<PAGE>

                                                                   EXHIBIT 99(C)

                           MERRILL LYNCH & CO., INC.

                                      and

                        CITIBANK, N.A., as Warrant Agent

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

                               WARRANT AGREEMENT

                            dated as of May   , 1999

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

                       RUSSELL 2000 INDEX CALL WARRANTS

                             EXPIRING MAY   , 2001

<PAGE>

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


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                                                                                      Page
                                                                                      ----
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PARTIES.................................................................................4

RECITALS................................................................................4


                                       ARTICLE I
                               ISSUANCE, FORM, EXECUTION,
                         DELIVERY AND REGISTRATION OF WARRANTS

SECTION 1.01.   Issuance of Warrants; Book Entry Procedures; Successor Depositary.......4
SECTION 1.02.   Form, Execution and Delivery of Global Warrant Certificate..............5
SECTION 1.03.   Global Warrant Certificate..............................................6
SECTION 1.04.   Registration of Transfers and Exchanges.................................6
SECTION 1.05.   Warrant Certificates....................................................7

                                       ARTICLE II
                           DURATION AND EXERCISE OF WARRANTS

SECTION 2.01.   Duration of Warrants; Minimum Exercise Amounts;
                Notice of Exercise......................................................9
SECTION 2.02.   Exercise and Delivery of Warrants......................................12
SECTION 2.03.   Automatic Exercise of the Warrants.....................................14
SECTION 2.04.   Extraordinary Events and Market Disruption Events......................16
SECTION 2.05.   Covenant of the Company................................................20
SECTION 2.06.   Return of Global Warrant Certificate...................................20
SECTION 2.07.   Return of Money Held Unclaimed for Two Years...........................20
SECTION 2.08.   Designation of Agent for Receipt of Notice.............................20

                                       ARTICLE III
                        OTHER PROVISIONS RELATING TO RIGHTS OF HOLDERS

SECTION 3.01.   Holder of Warrant May Enforce Rights...................................21
SECTION 3.02.   Merger, Consolidation, Sale, Transfer or Conveyance....................21

                                       ARTICLE IV
                                CANCELLATION OF WARRANTS

SECTION 4.01.   Cancellation of Warrants...............................................21
SECTION 4.02.   Treatment of Holders...................................................22
</TABLE>

                                       2
<PAGE>

                                ARTICLE V
                      CONCERNING THE WARRANT AGENT
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SECTION 5.01.   Warrant Agent..........................................................22
SECTION 5.02.   Conditions of Warrant Agent's Obligations..............................22
SECTION 5.03.   Resignation and Appointment of Successor...............................24

                                ARTICLE VI
                              MISCELLANEOUS

SECTION 6.01.   Amendment..............................................................25
SECTION 6.02.   Notices and Demands to the Company and Warrant Agent...................26
SECTION 6.03.   Addresses for Notices..................................................26
SECTION 6.04.   Notices to Holders.....................................................26
SECTION 6.05.   Applicable Law.........................................................26
SECTION 6.06.   Obtaining of Governmental Approvals....................................26
SECTION 6.07.   Persons Having Rights Under Warrant Agreement..........................26
SECTION 6.08.   Headings...............................................................27
SECTION 6.09.   Counterparts...........................................................27
SECTION 6.10.   Inspection of Agreement................................................27

SIGNATURES.............................................................................28

EXHIBIT A - Form of Global Warrant Certificate
EXHIBIT B - Form of Irrevocable Notice of Exercise
</TABLE>

                                       3
<PAGE>

                                WARRANT AGREEMENT

           THIS AGREEMENT, dated as of May   , 1999, between MERRILL LYNCH &
CO., INC., a corporation duly organized and existing under the laws of the State
of Delaware (the "Company"), and CITIBANK, N.A., a national banking association
duly incorporated and existing under the laws of the United States, as Warrant
Agent (the "Warrant Agent"),

                        W I T N E S S E T H  T H A T :

           WHEREAS, the Company proposes to sell warrants (the "Warrants" or,
individually, a "Warrant") representing the right to receive from the Company
the Cash Settlement Amount (as defined herein) in U.S. dollars computed by
reference to increases in the value of the Russell 2000 Index (the "Index"); and

           WHEREAS, the Company wishes the Warrant Agent to act on behalf of the
Company in connection with the issuance, transfer and exercise of the Warrants,
and wishes to set forth herein, among other things, the provisions of the
Warrants and the terms and conditions on which they may be issued, transferred,
exercised and cancelled;

           NOW, THEREFORE, in consideration of the promises and of the mutual
agreements herein contained, the parties hereto agree as follows:

                                    ARTICLE I

                           ISSUANCE, FORM, EXECUTION,
                     DELIVERY AND REGISTRATION OF WARRANTS

           SECTION 1.01. Issuance of Warrants; Book Entry Procedures; Successor
                         ------------------------------------------------------
Depositary. (a) The Warrants shall initially be represented by a single
- ----------
certificate (the "Global Warrant Certificate"). Each Warrant shall represent the
right, subject to the provisions contained herein and in the Global Warrant
Certificate, to receive the Cash Settlement Amount, if any, (as defined in
paragraph (e) of Section 2.02) of such Warrant. In no event shall Holders (as
defined in Section 4.02) be entitled to receive any interest on any Cash
Settlement Amount (unless the Company shall default in the payment of such Cash
Settlement Amount). Beneficial owners of interests in the Global Warrant
Certificate shall not be entitled to receive definitive Warrants evidencing the
Warrants; provided, however, that if (i) the Depositary (as defined in Section -
1.01(b)) is at any time unwilling or unable to continue as Depositary for the
Warrants and a successor Depositary is not appointed by the Company within 90
days, or (ii) the Company shall be adjudged bankrupt or insolvent or
make an assignment for the benefit of its creditors or institute proceedings to
be adjudicated bankrupt or shall consent to the filing of a bankruptcy
proceeding against it, or shall file a petition or answer or consent seeking
reorganization under applicable law, or shall consent to the filing of any such
petition, or shall consent to the appointment of a receiver or custodian of all
or any substantial part of its property, or shall admit in writing its inability
to pay or meet its debts as they mature, or if a receiver or custodian of it or
all or any substantial part of its property shall be appointed, or if any public
officer shall have taken charge or control of the Company or of its property or
affairs, for the purpose of rehabilitation, conservation or liquidation, the
Company will issue Warrants in definitive form in

                                       4
<PAGE>

exchange for the Global Warrant Certificate. In addition, the Company may at any
time determine not to have the Warrants represented by a Global Warrant
Certificate and, in such event, will issue Warrants in definitive form in
exchange for the Global Warrant Certificate. In any such instance, and in
accordance with the provisions of this Agreement, each beneficial owner of an
interest in the Global Warrant Certificate will be entitled to have a number of
Warrants equivalent to such owner's beneficial interest in the Global Warrant
Certificate registered in its name and will be entitled to physical delivery of
such Warrants in definitive form by the Depositary Participant (as defined in
Section 1.01(c)) through which such owner's beneficial interest is reflected.
The provisions of Section 1.05 shall apply only if, and when, Warrants in
definitive form ("Warrant Certificates") are issued hereunder. Unless the
context shall otherwise require, all references in this Agreement to the Global
Warrant Certificate shall include the Warrant Certificates in the event that
Warrant Certificates are issued.

           (b) The Global Warrant Certificate shall be deposited with the
Depositary or its agent (the term "Depositary", as used herein, initially refers
to The Depository Trust Company and includes any successor depositary selected
by the Company as provided in Section 1.01(d)) for credit to the accounts of the
Depositary Participants as shown on the records of the Depositary from time to
time.

           (c) The Global Warrant Certificate will initially be registered in
the name of a nominee of the Depositary selected by the Company for the
Warrants. The Warrant holdings of Depositary Participants will be recorded on
the books of the Depositary. The holdings of customers of Depositary
Participants will be reflected on the books and records of such Depositary
Participants and will not be known to the Warrant Agent, the Company or to the
Depositary. "Depositary Participants" include securities brokers and dealers,
banks and trust companies, clearing organizations and certain other
organizations which are participants in the Depositary's system. The Global
Warrant Certificate will be held by the Depositary or its agent.

           (d) The Company may from time to time select a new entity to act as
Depositary and, if such selection is made, the Company shall promptly give the
Warrant Agent notice to such effect identifying the new Depositary, and the
Global Warrant Certificate shall be delivered to the Warrant Agent and shall be
transferred to the new Depositary as provided in Section 1.04 as promptly as
possible. Appropriate changes may be made in the Global Warrant Certificate, the
notice of exercise and the related notices delivered in connection with an
exercise of Warrants to reflect the selection of the new Depositary.

           SECTION 1.02. Form, Execution and Delivery of Global Warrant
                         ----------------------------------------------
Certificate. The Global Warrant Certificate shall be in registered form and
- -----------
substantially in the form set forth in Exhibit A hereto, with such appropriate
insertions, omissions, substitutions and other variations as are required or
permitted by this Agreement. The Global Warrant Certificate may have imprinted
or otherwise reproduced thereon such letters, numbers or other marks of
identification or designation and such legends or endorsements as the officers
of the Company executing the same may approve (execution thereof to be
conclusive evidence of such approval) and are not inconsistent with the
provisions of this Agreement, or as may be required to comply with any law or
with any rule or regulation made pursuant thereto or with any rule or regulation
of any stock exchange on which the Warrants may be listed or of the Depositary,
or to conform to usage. The Global Warrant Certificate shall be signed on behalf
of the Company by its

                                       5
<PAGE>

President, Chairman of the Board, officer serving as Chief Financial Officer,
Treasurer, any Executive Vice President or any Vice President, manually or by
facsimile signature, and a facsimile of its corporate seal shall be impressed,
imprinted or engraved thereon, which shall be attested by its Secretary or any
Assistant Secretary, either manually or by facsimile signature. Typographical
and other minor errors or defects in any such reproduction of the seal or any
such signature shall not affect the validity or enforceability of the Global
Warrant Certificate that has been duly authenticated and delivered by the
Warrant Agent.

          In case any officer of the Company who shall have signed the Global
Warrant Certificate either manually or by facsimile signature shall cease to be
such officer before the Global Warrant Certificate so signed shall have been
authenticated and delivered by the Warrant Agent or delivered by the Company,
such Global Warrant Certificate nevertheless may be authenticated and delivered
as though the person who signed such Global Warrant Certificate had not ceased
to be such officer of the Company; and the Global Warrant Certificate may be
signed on behalf of the Company by such persons as, at the actual date of the
execution of such Global Warrant Certificate, shall be the proper officers of
the Company, although at the date of the execution of this Agreement any such
person was not such officer.

           SECTION 1.03. Global Warrant Certificate. A Global Warrant
                         --------------------------
Certificate relating to        Warrants originally issued may be executed by the
Company and delivered to the Warrant Agent on or after the date of execution of
this Agreement. The Warrant Agent is authorized, upon receipt of the Global
Warrant Certificate from the Company, duly executed on behalf of the Company, to
authenticate such Global Warrant Certificate. The Global Warrant Certificate
shall be manually authenticated and dated the date of its authentication by the
Warrant Agent and shall not be valid for any purpose unless so authenticated.
The Warrant Agent shall authenticate and deliver the Global Warrant Certificate
to or upon the written order of the Company.

           SECTION 1.04. Registration of Transfers and Exchanges. Except as
                         ---------------------------------------
otherwise provided herein or in the Global Warrant Certificate, the Warrant
Agent shall from time to time register the transfer of the Global Warrant
Certificate in the records of the Warrant Agent only to the Depositary, to a
nominee of the Depositary, to a successor Depositary, or to a nominee of a
successor Depositary, upon surrender of such Global Warrant Certificate, duly
endorsed and accompanied by a written instrument or instruments of transfer in
form satisfactory to the Warrant Agent and the Company, duly signed by the
registered Holder thereof or by the duly appointed legal representative thereof
or by a duly authorized attorney. Upon any such registration of transfer, the
Company shall execute and the Warrant Agent shall authenticate and deliver in
the name of the designated transferee a new Global Warrant Certificate of like
tenor and evidencing a like number of Unexercised Warrants as evidenced by the
Global Warrant Certificate at the time of such registration of transfer.

          The Global Warrant Certificate may be transferred as provided above at
the option of the Holder thereof when surrendered to the Warrant Agent at its
office or agency maintained for the purpose of transferring and exercising any
of the Warrants, which shall be south of Chambers Street in the Borough of
Manhattan, The City of New York (the "Warrant Agent Office"), and which is, on
the date of this Agreement, 111 Wall Street, Fifth Floor, New York, New York
10005  Attention: Corporate Trust Services, or at the office of any successor

                                       6
<PAGE>

Warrant Agent as provided in Section 5.03, in exchange for another Global
Warrant Certificate of like tenor and representing a like number of Unexercised
Warrants.  At any time, "Unexercised Warrants" shall mean all Warrants which
have not been exercised pursuant to Article II herein.

           SECTION 1.05. Warrant Certificates. Any Warrant Certificates issued
                         --------------------
in accordance with Section 1.01(a) shall be in registered form substantially in
the form set forth in Exhibit A hereto, with such appropriate insertions,
omissions, substitutions and other variations as are necessary or desirable for
individual Warrant Certificates, and may represent any integral multiple of
Warrants. The Warrant Certificates may have imprinted or otherwise reproduced
thereon such letters, numbers or other marks of identification or designation
and such legends or endorsements as the officers of the Company executing the
same may approve (execution thereof to be conclusive evidence of such approval)
and are not inconsistent with the provisions of this Agreement, or as may be
required to comply with any law or with any rule or regulation made pursuant
thereto or with any rule or regulation of any stock exchange on which the
Warrants may be listed or of the Depositary, or to conform to usage. Warrant
Certificates shall be signed on behalf of the Company upon the same conditions,
in substantially the same manner and with the same effect as the Global Warrant
Certificate.

           Each Warrant Certificate, when so signed on behalf of the Company,
shall be delivered to the Warrant Agent, which shall manually authenticate and
deliver the same to or upon the written order of the Company. Each Warrant
Certificate shall be dated the date of its authentication.

           No Warrant Certificate shall be valid for any purpose, and no Warrant
evidenced thereby shall be exercisable, until such Warrant Certificate has been
authenticated by the manual signature of the Warrant Agent. Such signature by
the Warrant Agent upon any Warrant Certificate executed by the Company shall be
conclusive evidence that the Warrant Certificate so authenticated has been duly
issued hereunder.

           Warrant Certificates delivered in exchange for the Global Warrant
Certificate shall be registered in such names and addresses (including tax
identification numbers) and in such denominations as shall be requested in
writing by the Depositary or its nominee in whose name the Global Warrant
Certificate is registered, upon written certification to the Company and the
Warrant Agent in form satisfactory to each of them of a beneficial ownership
interest in the Global Warrant Certificate.

           The Company shall cause to be kept at an office of the Warrant Agent
in The City of New York a register (the register maintained in such office and
in any other office or agency maintained by or on behalf of the Company for such
purpose being herein sometimes collectively referred to as the "Warrant
Register") in which, subject to such reasonable regulations as it may prescribe,
the Company shall provide for the registration of Warrant Certificates and the
transfer of Warrant Certificates. The Warrant Agent is hereby appointed "Warrant
Registrar" for the purpose of registering Warrant Certificates and the transfer
of Warrant Certificates as herein provided.

                                       7
<PAGE>

           Upon surrender for registration of a transfer of a Warrant
Certificate at an office or agency of the Company maintained for such purpose,
the Company shall execute, and the Warrant Agent shall authenticate and deliver,
in the name of the designated transferee or transferees, one or more new Warrant
Certificates of any authorized denominations and representing Warrants of a like
aggregate number.

           At the option of the Holder, Warrant Certificates may be exchanged
for other Warrant Certificates of any authorized denominations and representing
Warrants of a like aggregate number, upon surrender of the Warrant Certificates
to be exchanged at such office or agency. Whenever any Warrant Certificates are
so surrendered for exchange, the Company shall execute, and the Warrant Agent
shall authenticate and deliver, the Warrant Certificates which the Holder making
the exchange is entitled to receive.

           All Warrant Certificates issued upon any registration of a transfer
or an exchange of Warrant Certificates shall be the valid obligations of the
Company, evidencing the same obligations of the Company, and entitled to the
same benefits under this Warrant Agreement, as the Warrant Certificates
surrendered upon such registration of a transfer or an exchange.

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

           No service charge shall be made for any registration of a transfer or
an exchange of Warrant Certificates, but the Company may require payment of a
sum sufficient to cover any tax or other governmental charge that may be imposed
in connection with any registration of a transfer or an exchange of Warrant
Certificates.

           If any mutilated Warrant Certificate is surrendered to the Warrant
Agent, the Company shall execute and the Warrant Agent shall authenticate and
deliver in exchange therefor a new Warrant Certificate of like tenor
representing Warrants of a like number and bearing a number not
contemporaneously outstanding.

           If there shall be delivered by a Holder to the Company and the
Warrant Agent (i) evidence to their satisfaction of the destruction, loss or
theft of any Warrant Certificate, (ii) such security or indemnity as may be
required by them to save each of them and any agent of either of them harmless
and (iii) funds sufficient to cover any cost or expense to the Company
(including any fees charged by the Warrant Agent) relating to the issuance of a
new Warrant Certificate, then, in the absence of notice to the Company or the
Warrant Agent that such Warrant Certificate has been acquired by a bona fide
purchaser, the Company shall execute and upon its request the Warrant Agent
shall authenticate and deliver, in lieu of any such destroyed, lost or stolen
Warrant Certificate, a new Warrant Certificate of like tenor representing
Warrants of a like number and bearing a number not contemporaneously
outstanding.

          In case the Warrants evidenced by any such mutilated, destroyed, lost
or stolen Warrant Certificate have been exercised, or have been or are about to
be deemed to be exercised,

                                       8
<PAGE>

the Company in its discretion may, instead of issuing a new Warrant Certificate,
treat the same as if it had received written irrevocable notice of exercise in
good form in respect thereof, as provided herein.

           Every new Warrant Certificate issued pursuant to this Section 1.05 in
lieu of any destroyed, lost or stolen Warrant Certificate shall constitute an
original additional contractual obligation of the Company, whether or not the
destroyed, lost or stolen Warrant Certificate shall be at any time enforceable
by anyone, and shall be entitled to all the benefits of this Warrant Agreement
equally and proportionately with any and all other Warrant Certificates duly
issued hereunder.

           The provisions of this Section 1.05 are exclusive and shall preclude
(to the extent lawful) all other rights and remedies with respect to the
replacement or payment of mutilated, destroyed, lost or stolen Warrant
Certificates.

           Prior to due presentment of a Warrant Certificate for registration of
transfer, the Company, the Warrant Agent and any agent of the Company or the
Warrant Agent may treat the person in whose name such Warrant Certificate is
registered as the owner of such Warrant Certificate for all purposes hereunder
whatsoever, whether or not such Warrant Certificate has been transferred and
neither the Company, the Warrant Agent nor any agent of the Company or the
Warrant Agent shall be affected by notice to the contrary.

           All Warrant Certificates surrendered for exercise, registration of
transfer or exchange shall, if surrendered to any person other than the Warrant
Agent, be delivered to the Warrant Agent and shall be promptly cancelled by it.
The Company may at any time deliver to the Warrant Agent for cancellation any
Warrant Certificates previously authenticated and delivered hereunder which the
Company may have acquired in any manner whatsoever, and all Warrant Certificates
so delivered shall be promptly cancelled by the Warrant Agent. No Warrant
Certificates shall be authenticated in lieu of or in exchange for any Warrant
Certificates cancelled as provided in this Section 1.05, except as expressly
permitted by this Warrant Agreement. All cancelled Warrant Certificates held by
the Warrant Agent shall be disposed of as directed by the Company.

                                   ARTICLE II

                        DURATION AND EXERCISE OF WARRANTS

           SECTION 2.01. Duration of Warrants; Minimum Exercise Amounts; Notice
                         ------------------------------------------------------
of Exercise. (a) Subject to the limitations described herein, each Warrant
- -----------
evidenced by the Global Warrant Certificate may be irrevocably exercised at the
option of the Holder in whole but not in part on any New York Business Day (as
defined in Section 2.01(b)) from its date of issuance (i.e., the date of initial
settlement with respect to the initial sales of Warrants) until 1:00 P.M., New
York City time, on the second scheduled Index Calculation Day (as defined below)
immediately preceding the Expiration Date (as defined below in Section 2.03).
Except in the case of automatic exercise, each Warrant evidenced by the Global
Warrant Certificate may be exercised by written notice (the "Exercise Notice")
to the Warrant Agent from a Depositary Participant acting on behalf of the
beneficial owner of such Warrant and upon receipt by the

                                       9
<PAGE>

Warrant Agent through delivery of such Warrant free on the records of the
Depositary to the Warrant Agent's Depositary Participant Account (entitled
Citibank, N.A. Corporate Trust Warrant Agent Account, No. 2659, or such other
account of the Warrant Agent at the Depositary as the Warrant Agent shall
designate in writing to the Company and to the Depositary (the "Warrant
Account")) ("Proper Delivery"); provided, however, that Exercise Notices are
subject to rejection by the Warrant Agent as provided herein. As used herein,
"Index Calculation Day" means any day on which the New York Stock Exchange (the
"NYSE") and the American Stock Exchange (the "AMEX") are open for trading and
the Index or any Successor Index is calculated and published.

           "Index" shall mean the Russell 2000 Stock Index published by Frank
Russell Company ("FRC"). If FRC discontinues publication of the Index and FRC or
another entity publishes a successor or substitute index that the Calculation
Agent (as defined in Section 2.02(e)) determines, in its sole discretion, to be
comparable to the Index (any such index being referred to herein as a "Successor
Index"), then, upon the Calculation Agent's notification of such determination
to the Warrant Agent and the Company, the Calculation Agent shall substitute the
Successor Index as calculated by FRC or such other entity for the Index and
calculate the Cash Settlement Amount upon an exercise as described above. Upon
any selection by the Calculation Agent of a Successor Index, the Company shall
promptly give notice to the beneficial owners by publication in a United States
newspaper with a national circulation.

           If FRC discontinues publication of the Index and a Successor Index is
not selected by the Calculation Agent or is no longer published on any Valuation
Day (as defined in Section 2.01(c)), the value to be substituted for the Index
for any Valuation Day used to calculate the Cash Settlement Amount upon exercise
shall be a value computed by the Calculation Agent on each Valuation Day in
accordance with the procedures last used to calculate the Index prior to such
discontinuance.

           If a Successor Index is selected or the Calculation Agent calculates
a value as a substitute for the Index, such Successor Index or value shall be
substituted for the Index for all purposes, including for purposes of
determining whether a Market Disruption Event (as defined in Section 2.04(c)) or
Extraordinary Event (as defined in Section 2.04(a)) exists. If the Calculation
Agent calculates a value as a substitute for the Index, "Index Calculation Day"
shall mean any day on which the Calculation Agent is able to calculate such
value.

          If at any time the method of calculating the Index or any Successor
Index, as the case may be, or the value thereof, is changed in a material
respect, or if the Index is in any other way modified so that such Index does
not, in the opinion of the Calculation Agent, fairly represent the value of the
Index had such changes or modifications not been made, then, from and after such
time, the Calculation Agent shall, at the close of business in New York, New
York, on each Valuation Day, make such adjustments as, in the good faith
judgment of the Calculation Agent, may be necessary in order to arrive at a
calculation of a value of a stock index comparable to the Index or any Successor
Index, as the case may be, as if such changes or modifications had not been
made, and calculate such Closing Index Value (as defined in Section 2.02(e))
with reference to the Index or any Successor Index, as the case may be, as
adjusted. Accordingly, if the method of calculating the Index or any Successor
Index, as the case may be, is modified so that the value of such Index or such
Successor Index is a fraction or a multiple of

                                       10
<PAGE>

what it would have been if it had not been modified (e.g., due to a split in the
Index), the Calculation Agent shall adjust the Index in order to arrive at a
value of the Index or such Successor Index as if it had not been modified (e.g.,
as if such split had not occurred).

           (b) No fewer than 100 Warrants may be exercised by or on behalf of
any one beneficial owner at any one time, except that no such minimum exercise
amount shall apply in the case of automatic exercise pursuant to Section 2.03
hereof on the Expiration Date or Delisting Date (as defined in Section 2.03(a))
or upon cancellation of the Warrants pursuant to Section 2.04 hereof. An
irrevocable Exercise Notice to the Warrant Agent shall be in the form set forth
in Exhibit B hereto, or such other form as the Company and Warrant Agent may
approve, and shall be sent to the Warrant Agent in writing (which shall include
facsimile transmissions) at its address as set forth in such Exercise Notice or
at such other address as the Warrant Agent may specify from time to time. As
used herein, "New York Business Day" means any day other than a Saturday or a
Sunday or a day on which commercial banks in The City of New York are required
or authorized by law or executive order to be closed. Except as provided in
Section 2.02(b), the Warrant Agent shall be entitled to rely conclusively on any
Exercise Notice received by it with no duty of inquiry by the Warrant Agent.

           (c) All exercises of Warrants (other than on automatic exercise) are
subject, at the Company's option, to the limitation that not more than 20% of
the Warrants originally issued (provided, however, that no more than 10% of the
Warrants originally issued shall be exercised for the account of any beneficial
owner) may be exercised on any Exercise Date (as defined in Section 2.02(a)) and
not more than 10% of the Warrants originally issued may be exercised by or on
behalf of any beneficial owner, either individually or in concert with any other
beneficial owner, on any Exercise Date. If any New York Business Day would
otherwise, under the terms of this Agreement, be the Exercise Date in respect to
more than 20% of the Warrants originally issued, then at the Company's election,
20% of the Warrants originally issued (provided, however, that no more than 10%
of the Warrants originally issued shall be exercised for the account of any
beneficial owner) shall be deemed exercised on such Exercise Date (such Warrants
to be selected by the Warrant Agent on a pro rata basis, but if, as a result of
such pro rata selection, any beneficial owners of Warrants would be deemed to
have exercised less than 100 Warrants, then the Warrant Agent shall first select
an additional amount of such beneficial owner's Warrants so that no beneficial
owner shall be deemed to have exercised less than 100 Warrants), and the
remainder of such warrants, whether or not fewer than 100 warrants (the
"Remaining Warrants"), shall be deemed exercised on the following New York
Business Day (subject to successive applications of this provision); provided
that any Remaining Warrants for which an Exercise Notice was delivered on a
given Exercise Date shall be deemed exercised before any other Warrants for
which an Exercise Notice was delivered on a later Exercise Date. Any election
made by the Company hereunder shall be made telephonically and confirmed in
writing no later than 5:00 P.M. on the New York Business Day immediately
following the Valuation Day on which the Company receives notice that in excess
of 20% of the Warrants originally issued, or more than 10% of the Warrants
originally issued for the account of any beneficial owner have been exercised.
The "Valuation Day" for a Warrant shall be the applicable Exercise Date if such
Exercise Date is an Index Calculation Day, or the immediately succeeding Index
Calculation Day if such Exercise Date is not an Index Calculation Day, subject
to postponement upon the occurrence of an Extraordinary Event or a Market
Disruption Event as

                                       11
<PAGE>

described in Section 2.04 below or as a result of the exercise of a number of
Warrants exceeding the limits on exercise describe above.

           SECTION 2.02. Exercise and Delivery of Warrants. (a) Except for
                         ---------------------------------
Warrants subject to automatic exercise or held through the facilities of
Cedelbank, or Morgan Guaranty Trust Company of New York, Brussels office, as
operator for the Euroclear System ("Euroclear"), the "Exercise Date" for a
Warrant shall be (i) the New York Business Day on which the Warrant Agent
receives the Warrant and Exercise Notice in proper form with respect to such
Warrant, if received at or prior to 1:00 P.M., New York City time, on such day,
or (ii) if the Warrant Agent receives such Warrant and Exercise Notice after
1:00 P.M., New York City time, on a New York Business Day, then the first New
York Business Day following such New York Business Day.

           In the case of Warrants held through the facilities of Cedelbank or
Euroclear, except for Warrants subject to automatic exercise, the "Exercise
Date" for a Warrant shall be (i) the New York Business Day on which the Warrant
Agent receives the Exercise Notice in proper form with respect to such Warrant
if such Exercise Notice is received at or prior to 1:00 P.M., New York City
time, on such day, provided that the Warrant is received by the Warrant Agent by
1:00 P.M., New York City time, on the Valuation Day, or (ii) if the Warrant
Agent receives such Exercise Notice after 1:00 P.M., New York City time, on a
New York Business Day, then the first New York Business Day following such New
York Business Day, provided that the Warrant is received by 1:00 P.M., New York
City time, on the Valuation Day relating to exercises of Warrants on such
succeeding New York Business Day. In the event that the Warrant is received
after 1:00 P.M., New York City time, on the Valuation Day, then the Exercise
Date for such Warrants shall be the first New York Business Day following the
day on which such Warrants are received. In the case of Warrants held through
the facilities of Cedelbank or Euroclear, in order to ensure proper exercise on
a given New York Business Day, participants in Cedelbank or Euroclear must
submit exercise instructions to Cedelbank or Euroclear, as the case may be, by
10:00 A.M., Luxembourg time, in the case of Cedelbank and by 10:00 A.M.,
Brussels time (by telex), or 11:00 A.M., Brussels time (by EUCLID), in the case
of Euroclear. In addition, in the case of book-entry exercises by means of the
Euroclear System, (i) participants must also transmit, by facsimile (facsimile
number (212) 825-3483), to the Warrant Agent a copy of the Exercise Notice
submitted to Euroclear by 1:00 P.M., New York City time, on the desired Exercise
Date and (ii) Euroclear must confirm by telex to the Warrant Agent by 9:00 A.M.,
New York City time, on the Valuation Day, that the Warrants will be received by
the Warrant Agent on such date; provided, that if such telex communication is
received after 9:00 A.M., New York City time, on the Valuation Day, the Company
shall be entitled to direct the Warrant Agent to reject the related Exercise
Notice or waive the requirement for timely delivery of such telex communication.

           Any Exercise Notice received after 1:00 P.M., New York City time, on
the second scheduled Index Calculation Day immediately preceding the Expiration
Date shall be void and of no effect and shall be deemed not to have been
delivered.

           (b) Following receipt of a written irrevocable Exercise Notice in
good form and Proper Delivery of a Warrant, the Warrant Agent shall: (i)
determine whether the Exercise Notice has been duly completed and is in proper
form duly executed by the Depositary

                                       12
<PAGE>

Participant tendering such Warrant and if the Warrant Agent determines that such
Exercise Notice has not been duly completed or is not in proper form, or has not
been so executed, the Warrant Agent shall reject such Exercise Notice and shall
send to the Depositary Participant that executed such Exercise Notice (at the
address specified in such notice) a notice of rejection in the form included in
Exhibit B hereto and shall return the related Warrant to such Depositary
Participant by redelivering such Warrant free through the facilities of the
Depositary to the account of such Depositary Participant; (ii) notify the
Company and the Calculation Agent by 5:00 P.M., New York City time, on the New
York Business Day such Exercise Notice and Proper Delivery are received (or
deemed to have been received) of the number of Warrants in respect of which
Exercise Notices, not rejected pursuant to clause (i) above, and Proper Delivery
were received after 1:00 P.M., New York City time, the preceding New York
Business Day and at or prior to 1:00 P.M., New York City time, on such date;
(iii) not later than 10:00 A.M., New York City time, on the New York Business
Day following the applicable Valuation Day obtain the Index Spot Value from the
Calculation Agent; (iv) determine the Cash Settlement Amount of such Warrants;
(v) advise the Company of the aggregate Cash Settlement Amount of the exercised
Warrants and send notice of confirmation of exercise in the form set forth in
Exhibit B hereto to such Depositary Participant; and (vi) promptly deliver a
copy of such notice of exercise to the Company if requested by the Company and
advise the Company of such other matters relating to the exercised Warrants as
the Company shall reasonably request. Any notice to be given to the Company by
the Warrant Agent pursuant to this Section 2.02 or pursuant to Section 2.03
shall be by telephone and shall be promptly confirmed in writing. Any notice to
be given to the Calculation Agent pursuant to this Section 2.02 or pursuant to
Section 2.03 shall be by facsimile transmission to the address of the
Calculation Agent set forth in Section 6.03.

           (c) The Company shall make available to the Warrant Agent, no later
than 3:00 P.M., New York City time, on the fourth New York Business Day
following the Valuation Day (the "Settlement Date"), funds in an amount
sufficient to pay such aggregate Cash Settlement Amount. Provided that the
Company has made adequate funds available to the Warrant Agent in such manner,
the Warrant Agent shall make payment by check to the relevant Depositary
Participant, after 3:00 P.M., New York City time, but prior to the close of
business, on such Settlement Date. Any such payment shall be in the amount of
the aggregate Cash Settlement Amount in respect of exercised Warrants for which
delivery has been accepted by the Warrant Agent.

           (d) The Warrant Agent shall cause its records, which may be kept
electronically, to be marked to reduce the number of Warrants evidenced by the
Global Warrant Certificate, by the number of Warrants delivered to the Warrant
Account for which payment has been made, promptly after such delivery and
payment.

           (e) Except as provided in Section 2.04, "Cash Settlement Amount" of
an exercised Warrant is an amount stated in U.S. dollars that results from the
following formula:

                      Percentage Change X Dollar Multiplier

                                       13
<PAGE>

            The "Percentage Change" shall equal the following amount:

                     Index Spot Value -- Index Strike Value
                     --------------------------------------

                               Index Strike Value

The "Dollar Multiplier" equals $       .

The "Index Spot Value" relating to any Exercise Date shall be determined by
Merrill Lynch, Pierce, Fenner & Smith Incorporated, or any successor thereto
(the "Calculation Agent"), and shall equal (i) for any Valuation Day on or prior
to the second Index Calculation Day preceding the Expiration Date, the Closing
Index Value of the Index, or, if applicable, the Successor Index, in New York on
such date, and (ii) for any Valuation Day after the second Index Calculation Day
preceding the Expiration Date, the closing value of the Index, or, if
applicable, the Successor Index, in New York on such date as calculated by the
Calculation Agent using opening prices for the Underlying Stock (as defined in
Section 2.04(a)) that constitute the Index or Successor Index, as applicable.

           The "Closing Index Value" for any Valuation Day shall equal the
closing value in New York of the Index on such date.

           The "Index Strike Value" equals .

           The Cash Settlement Amount shall be rounded, if necessary, to the
nearest cent (with one-half cent being rounded upwards).

           SECTION 2.03. Automatic Exercise of the Warrants. (a) All Warrants
                         ----------------------------------
for which the Warrant Agent has not received a valid Exercise Notice at or prior
to 1:00 P.M., New York City time, or for which the Warrant Agent has received a
valid Exercise Notice but with respect to which timely delivery of the relevant
Warrants has not been made, together with any Warrants the Valuation Day for
which has at such time been postponed as described under Section 2.04 of this
Agreement, on (i) the second scheduled Index Calculation Day immediately
preceding May   , 2001 (the "Expiration Date") or (ii) the close of business on
the New York Business Day on which the Warrants are delisted from, or
permanently suspended from trading on, the American Stock Exchange (the "AMEX")
and the Warrants are not simultaneously accepted for trading pursuant to the
rules of another self-regulated trading organization whose rules are filed with
the Securities and Exchange Commission (a "Regulated Trading Organization")
under the Securities Exchange Act of 1934, as amended, (the "Delisting Date")
shall be automatically exercised, without any required delivery of an Exercise
Notice or delivery of the Warrants from any relevant Depositary Participant to
the Warrant Agent, on the Expiration Date or Delisting Date, as the case may be,
(the Expiration Date will be deemed the Exercise Date). The Company shall advise
the Warrant Agent of the date of any expected delisting or permanent suspension
of trading of the Warrants as soon as is practicable and shall immediately
inform the Warrant Agent after the Company has received notice that such
delisting or suspension has occurred and that the Warrants are not accepted for
listing on another Regulated Trading Organization, but in no event will such
notice be given to the Warrant Agent later than 5:00 P.M., New York City time,
on the New York Business Day preceding the Delisting Date.

           (b) In the event the Warrants are cancelled by the Company because of
the continuance of an Extraordinary Event, Warrants not previously exercised
shall be automatically

                                       14
<PAGE>

exercised on the basis that the Valuation Day for such Warrants shall be the
Cancellation Date (as defined in Section 2.04(a)).

           (c) By 5:00 P.M., New York City time, on the second scheduled Index
Calculation Day immediately preceding the Expiration Date, or if such day is not
a New York Business Day, the next New York Business Day, the Warrant Agent shall
advise the Company of the number of Unexercised Warrants outstanding after 1:00
P.M., New York City time, on such Index Calculation Day. The Warrant Agent
shall, not later than 10:00 A.M., New York City time, on the New York Business
Day following the applicable Valuation Day, (i) obtain the Index Spot Value from
the Calculation Agent and determine the Cash Settlement Amount, if any, in the
manner provided in paragraph (e) of Section 2.02, (ii) advise the Company of the
Index Spot Value and the Cash Settlement Amount, if any, of the Unexercised
Warrants evidenced by the Global Warrant Certificate, and (iii) advise the
Company of such other matters relating to the Unexercised Warrants as the
Company shall reasonably request. Provided that the Company has made adequate
funds available to the Warrant Agent in a timely manner which shall, in no
event, be later than 3:00 P.M., New York City time, on the fourth New York
Business Day following the Expiration Date, the Warrant Agent shall make its
check (or another form of payment in accordance with existing arrangements
between the Warrant Agent and the Depositary) available to the Depositary
against receipt by the Warrant Agent from the Depositary of the Global Warrant
Certificate on the fourth New York Business Day following the Expiration Date,
such payment to be in the amount of the aggregate Cash Settlement Amount in
respect of the number of Unexercised Warrants evidenced by the Global Warrant
Certificate at the close of business on the Expiration Date. The Warrant Agent
shall promptly cancel the Global Warrant Certificate following its receipt
thereof from the Depositary.

           (d) The Company shall notify the Holders, or shall cause such Holders
to be notified, as promptly as is practicable, of any delisting or suspension of
trading of the Warrants.

           (e) Notwithstanding the foregoing, no delisting or suspension of
trading shall affect the right of a beneficial owner of an interest in the
Global Warrant Certificate to cause a Depositary Participant to exercise the
Warrants or effect an automatic exercise of the Warrants if the Warrants are
simultaneously accepted for trading pursuant to the rules of another Regulated
Trading Organization. If the Warrants are so listed by another Regulated Trading
Organization, from and after such date all references in this Section 2.03 shall
continue to apply, but each reference to the "American Stock Exchange" herein
shall be deemed to refer to such other Regulated Trading Organization.

           (f) By 5:00 P.M., New York City time, on the Delisting Date the
Warrant Agent shall advise the Company of the number of Unexercised Warrants
outstanding after 1:00 P.M., New York City time, on such Delisting Date. The
Warrant Agent shall, not later than 10:00 A.M., New York City time, on the New
York Business Day following the applicable Valuation Day, (i) obtain the Index
Spot Value from the Calculation Agent and determine the Cash Settlement Amount,
if any, in the manner provided in paragraph (e) of Section 2.02, (ii) advise the
Company of the Index Spot Value and the Cash Settlement Amount, if any, of the
Unexercised Warrants evidenced by the Global Warrant Certificate, and (iii)
advise the Company of such other matters relating to the Unexercised Warrants as
the Company shall reasonably request. Provided that the Company has made
adequate funds available to the

                                       15
<PAGE>

Warrant Agent in a timely manner which shall, in no event, be later than 3:00
P.M., New York City time, on the fourth New York Business Day following the
Delisting Date, the Warrant Agent shall make its check (or another form of
payment in accordance with existing arrangements between the Warrant Agent and
the Depositary) available to the Depositary against receipt by the Warrant Agent
from the Depositary of the Global Warrant Certificate on the fourth New York
Business Day following the Delisting Date, such payment to be in the amount of
the aggregate Cash Settlement Amount in respect of the number of Unexercised
Warrants evidenced by the Global Warrant Certificate at the close of business on
the Delisting Date. The Warrant Agent shall promptly cancel the Global Warrant
Certificate following its receipt thereof from the Depositary.

           SECTION 2.04. Extraordinary Events and Market Disruption Events. (a)
                         -------------------------------------------------
If the Calculation Agent determines that an Extraordinary Event has occurred and
is continuing on the Scheduled Index Calculation Day with respect to which the
Index Spot Value on a Valuation Day is to be determined (the "Applicable
Scheduled Index Calculation Day"), then the Cash Settlement Amount in respect of
an exercise shall be calculated on the basis that the Valuation Day shall be the
next Index Calculation Day following an Applicable Scheduled Index Calculation
Day on which there is no Extraordinary Event or Market Disruption Event;
provided that if a Valuation Day has not occurred on or prior to the Expiration
Date or the Delisting Date, the Holders shall receive the Alternative Settlement
Amount (as defined below) in lieu of the Cash Settlement Amount which shall be
calculated as if the Warrants had been cancelled on the Expiration Date or the
Delisting Date, as the case may be. The Company shall promptly give notice to
beneficial owners, by publication in a United States newspaper with a national
circulation (expected, as of the date of this agreement, to be The Wall Street
Journal), if an Extraordinary Event shall have occurred.

         "Extraordinary Event" means any of the following events:

               (i)   a suspension or absence of trading on the NYSE, AMEX or the
         over-the- counter market of all the Underlying Stocks which then
         comprise the Index or a Successor Index;

               (ii)  the enactment, publication, decree or other promulgation of
         any statute, regulation, rule or order of any court or any other U.S.
         or non-U.S. governmental authority which would make it unlawful for the
         Company to perform any of its obligations under this Agreement or the
         Warrants; or

               (iii) any outbreak or escalation of hostilities or other national
         or international calamity or crises (including, without limitation,
         natural calamities that in the reasonable opinion of the Calculation
         Agent may materially and adversely affect the economy of the United
         States or the trading of securities generally on the NYSE, AMEX or the
         over-the-counter market) that has or will have a material adverse
         effect on the ability of the Company to perform its obligations under
         the Warrants or to modify the hedge of its position with respect to the
         Index or the Underlying Stocks.


                                       16
<PAGE>

           For the purposes of determining whether an Extraordinary Event has
occurred: (1) a limitation on the hours or number of days of trading on an
exchange will not constitute an Extraordinary Event if it results from an
announced change in the regular business hours of such exchange and (2) an
"absence of trading" on an exchange will not include any time when such exchange
itself is closed for trading under ordinary circumstances.

           "Underlying Stocks" means the stocks included in the Index or any
Successor Index.

           If the Calculation Agent determines that an Extraordinary Event has
occurred and is continuing, and if the Extraordinary Event is expected by the
Calculation Agent to continue, the Company may immediately cancel all
outstanding Warrants by notifying the Warrant Agent of such cancellation (the
date such notice is given being the "Cancellation Date"), and each beneficial
owner's rights under the Warrants and this Agreement shall thereupon cease;
provided that each Warrant shall be automatically exercised on the basis that
the Valuation Day for such Warrant shall be the Cancellation Date, if the
Cancellation Date is an Index Calculation Day, or the immediately succeeding
Index Calculation Day, if the Cancellation Date is not an Index Calculation Day,
and the Holder of each such Warrant shall receive, in lieu of the Cash
Settlement Amount of such Warrant, an amount (the "Alternative Settlement
Amount"), determined by the Calculation Agent, which is the greater of (i) the
average of the last sale prices, as available, of the Warrants on the AMEX (or
any successor securities exchange on which the Warrants are listed) on the 30
trading days preceding the date on which such Extraordinary Event was declared;
provided that, if the Warrants were not traded on the AMEX (or such successor
securities exchange) on at least 20 of such trading days, no effect will be
given to this clause (i) for the purpose of determining the Alternative
Settlement Amount, and (ii) the amount "X" calculated using the formula set
forth below:

                                      [ T     A  ]
                              X = I + [--- X --- ]
                                      [ 2     B  ]

where

           I = The Cash Settlement Amount of the Warrants determined as
described in Section 2.02(e), but subject to the following modifications:

               (1)  if the Cancellation Date for such Warrants is a date on
           which the Index or a Successor Index is calculated and published, for
           the purpose of determining such Cash Settlement Amount, the Index
           Spot Value shall be determined as of such Cancellation Date except
           that, if the Index Spot Value as of such day is less than 90% of the
           Index Spot Value as of the immediately preceding Index Calculation
           Day, then the Index Spot Value shall be deemed to be 90% of the Index
           Spot Value on such preceding Index Calculation Day; or

               (2)  if the Cancellation Date for such Warrants is a date on
           which the Index or a Successor Index is not calculated or published,
           for the purpose of determining such Cash Settlement Amount, the Index
           Spot Value shall be deemed

                                       17
<PAGE>

               to be the lesser of (i) the Index Spot Value as of the first
               Index Calculation Day immediately preceding the Cancellation Date
               except that, if the Index Spot Value as of such day is less than
               90% of the Index Spot Value as of the second Index Calculation
               Day immediately preceding such Cancellation Date, 90% of the
               Index Spot Value as of such second Index Calculation Day and (ii)
               the arithmetic average of four amounts, being (a) the Index Spot
               Value at each of the three successive Index Calculation Days
               immediately preceding the Cancellation Date and (b) the Index
               Spot Value at the next Index Calculation Day, provided that if an
               Extraordinary Event described in clause (i) of the definition of
               Extraordinary Event continues for 30 consecutive days immediately
               following such Cancellation Date, then the Calculation Agent
               shall calculate an amount which, in its reasonable opinion,
               fairly reflects the value of the Underlying Stocks on the Index
               Calculation Day immediately following such Cancellation Date
               which, subject to approval by the Company (such approval not to
               be unreasonably withheld), shall for purposes of calculating the
               amount under this clause (2)(ii) be treated as the figure arrived
               at under clause (2)(ii)(b) above;

               T = U.S. $5.00;

               A = the total number of days from but excluding the Cancellation
Date for such Warrants to and including the Expiration Date; and

               B = the total number of days from but excluding the date the
Warrants were initially sold to and including the Expiration Date.

               For the purposes of determining "I" in the above formula, in the
event that the Calculation Agent and the Company are required to have, but have
not, after good faith consultation with each other and within five days
following the first day upon which such Alternative Settlement Amount may be
calculated in accordance with the above formula, agreed upon a figure under
clause (2)(ii)(b) which fairly reflects the value of the Underlying Stocks on
the Cancellation Date, then the Calculation Agent shall promptly nominate a
third party, subject to approval by the Company (such approval not to be
unreasonably withheld), to determine such figure and calculate the Alternative
Settlement Amount in accordance with the above formula. Such party shall act as
an independent expert and not as an agent of the Company or the Calculation
Agent, and its calculation and determination of the Alternative Settlement
Amount shall, absent manifest error, be final and binding on the Company, the
Warrant Agent, the Calculation Agent and the Holders. Any such calculations
shall be made available to Holders for inspection at the Warrant Agent's office.
Neither the Company nor such third party shall have any responsibility for good
faith errors or omissions in calculating the Alternative Settlement Amount.

               (b) With respect to all Warrants which have been canceled as
described above, the Company shall make available to the Warrant Agent not later
than 3:00 p.m., New York City time, on the fourth New York Business Day
following the Cancellation Date (the "Alternative Settlement Date"), funds in an
amount equal to the aggregate Alternative Settlement Amount of such Warrants.
Subject to such funds having been made available as provided in the preceding
sentence, the Warrant Agent shall be responsible for making a payment to the

                                       18
<PAGE>

Depositary, after 3:00 p.m., New York City time, but prior to the close of
business on, the Alternative Settlement Date, in an amount equal to the
aggregate Alternative Settlement Amount of such exercised Warrants.

               (c) If the Calculation Agent determines that on a Valuation Day a
Market Disruption Event has occurred and is continuing, the Valuation Day shall
be postponed to the first succeeding Index Calculation Day on which no Market
Disruption Event occurs; provided that, if the Valuation Day has not occurred on
or prior to the fifth Scheduled Index Calculation Day following an Exercise Date
because of Market Disruption Events, the Calculation Agent shall, on such fifth
Scheduled Index Calculation Day, calculate an amount which, in its reasonable
opinion, fairly reflects the value of the Underlying Stocks on such day in order
to determine the Cash Settlement Amount.

               "Market Disruption Event" means with respect to any Valuation Day
the occurrence or existence during the one-half hour period that ends at the
determination of the Closing Index Value for such Scheduled Index Calculation
Day of:

                    (i)  a suspension, material limitation or absence of trading
               on the NYSE, AMEX or the over-the-counter market of 20% or more
               of the Underlying Stocks which then compromise the Index or
               Successor Index during the one-half hour period preceding the
               close of trading on the applicable exchange; or

                    (ii) the suspension or material limitation on the Chicago
               Board Options Exchange (the "CBOE"), the Chicago Mercantile
               Exchange (the "CME") or any other major futures or securities
               market of trading in futures or options contracts related to the
               Index or a Successor Index during the one-half hour period
               preceding the close of trading on the applicable exchange.

               For the purposes of determining whether a Market Disruption Event
has occurred:

               (i)    a limitation on the hours or number of days of trading
                      will not constitute a Market Disruption Event if it
                      results from an announced change in the regular business
                      hours of the relevant exchange,

               (ii)   a decision to permanently discontinue trading in the
                      relevant futures or options contract will not constitute a
                      Market Disruption Event,

               (iii)  a suspension in trading in a futures or options contract
                      on the Index by a major securities market by reason of (a)
                      a price change violating limits set by such securities
                      market, (b) an imbalance of orders relating to such
                      contracts or (c) a disparity in bid and ask quotes
                      relating to such contracts will constitute a suspension or
                      material limitation of trading in futures or options
                      contracts related to the Index,


                                       19
<PAGE>

               (iv) an absence of trading on an exchange will not include any
                    time when such exchange is closed for trading under ordinary
                    circumstances, and

               (v)  the occurrence of an Extraordinary Event described in
                    Section 2.04(a)(i) will not constitute, and will supersede
                    the occurrence of, a Market Disruption Event.

           (d) With respect to all Warrants as to which the Valuation Day has
been postponed as described above in this Section 2.04, the Company shall make
available to the Warrant Agent not later than 3:00 p.m., New York City time, on
the fourth New York Business Day following the date on which the Cash Settlement
Amount has been calculated (the "Postponed Settlement Date"), funds in an amount
equal to the aggregate Cash Settlement Amount of such Warrants. Subject to such
funds having been made available as provided in the preceding sentence, the
Warrant Agent shall be responsible for making a payment to the Depositary, after
3:00 p.m., New York City time, but prior to the close of business on, the
Postponed Settlement Date, in an amount equal to the aggregate Cash Settlement
Amount of such exercised Warrants.

           SECTION 2.05. Covenant of the Company. The Company covenants, for the
                         -----------------------
benefit of the Holders, that it shall not seek the delisting of the Warrants
from, or suspension of their trading on, the American Stock Exchange.

           SECTION 2.06. Return of Global Warrant Certificate. At such time as
                         ------------------------------------
all of the Warrants have been exercised, deemed automatically exercised or
otherwise cancelled, the Warrant Agent shall destroy the cancelled Global
Warrant Certificate unless the Company directs it to return it.

           SECTION 2.07. Return of Money Held Unclaimed for Two Years. Any money
                         --------------------------------------------
deposited with or paid to the Warrant Agent for the payment of the Cash
Settlement Amount of any Warrants and not applied but remaining unclaimed for
two years after the date upon which such Cash Settlement Amount shall have
become due and payable, shall be repaid by the Warrant Agent to the Company and
the Holder of such Warrants shall thereafter look only to the Company for any
payment which such Holder may be entitled to collect and all liability of the
Warrant Agent with respect to such money shall thereupon cease; provided,
however, that the Warrant Agent, before making any such repayment, may at the
expense of the Company notify the Holders concerned that said money has not been
so applied and remains unclaimed and that after a date named therein any
unclaimed balance of said money then remaining shall be returned to the Company.

           SECTION 2.08. Designation of Agent for Receipt of Notice. The Company
                         ------------------------------------------
may from time to time designate in writing to the Warrant Agent a designee for
receipt of all notices required to be given by the Warrant Agent pursuant to
this Article II and all such notices thereafter shall be given in the manner
herein provided by the Warrant Agent to such designee.

                                       20
<PAGE>

                                  ARTICLE III

                 OTHER PROVISIONS RELATING TO RIGHTS OF HOLDERS

           SECTION 3.01. Holder of Warrant May Enforce Rights. Notwithstanding
                         ------------------------------------
any of the provisions of this Agreement, any Holder, without the consent of the
Warrant Agent, may, in and for his own behalf, enforce, and may institute and
maintain any suit, action or proceeding against the Company suitable to enforce,
or otherwise in respect of, his right to exercise, and to receive payment for,
his Warrants as provided in the Global Warrant Certificate and in this
Agreement.

           SECTION 3.02. Merger, Consolidation, Sale, Transfer or Conveyance.
                         ---------------------------------------------------
The Company may consolidate with, or sell, lease or convey all or substantially
all of its assets to, or merge with or into any other corporation, provided that
in any such case, either the Company shall be the continuing corporation, or the
successor corporation shall be a corporation organized and existing under the
laws of the United States of America or a State thereof and such successor
corporation shall expressly assume the payment of the Cash Settlement Amount
with respect to all unexercised Warrants, according to their tenor, and the due
and punctual performance and observance of all of the covenants and conditions
of this Agreement and the Global Warrant Certificate to be performed by the
Company. Such successor or assuming corporation thereupon may cause to be
signed, and may issue either in its own name or in the name of the Company, a
new Global Warrant Certificate representing the Warrants not theretofore
exercised, in exchange and substitution for the Global Warrant Certificate
theretofore issued. Such Global Warrant Certificate shall in all respects have
the same legal rank and benefit under this Agreement as the Global Warrant
Certificate theretofore issued in accordance with the terms of this Agreement as
though such new Global Warrant Certificate had been issued at the date of the
execution hereof. In any case of any such consolidation, merger, sale, lease or
conveyance of substantially all of the assets of the Company, such changes in
phraseology and form (but not in substance) may be made in the new Global
Warrant Certificate as may be appropriate.

           The Warrant Agent may receive a written opinion of legal counsel as
conclusive evidence that any such consolidation, merger, sale, lease or
conveyance of substantially all of the assets of the Company complies with the
provisions of this Section 3.02 and that the assumption of this Agreement by the
successor or assuming corporation is effective.

                                  ARTICLE IV

                            CANCELLATION OF WARRANTS

           SECTION 4.01. Cancellation of Warrants. In the event the Company
                         ------------------------
shall purchase or otherwise acquire Warrants, such Warrants may, at the option
of the Company and upon notification to the Warrant Agent, be surrendered free
through a Depositary Participant for credit to the Warrant Account and if so
credited the Warrant Agent shall promptly note the cancellation of such Warrants
by notation on the records of the Warrant Agent. No Warrant shall be issued in
lieu of or in exchange for any Warrant which is cancelled as provided herein,
except as otherwise expressly permitted by this Agreement.

                                       21
<PAGE>

           SECTION 4.02. Treatment of Holders. The Company, the Warrant Agent
                         --------------------
and any agent of the Company or the Warrant Agent may deem and treat the person
in whose name a Warrant Certificate or the Global Warrant Certificate shall be
registered in the records of the Warrant Agent as the absolute owner of such
Warrant Certificate or Global Warrant Certificate, as the case may be
(notwithstanding any notation of ownership or other writing thereon) (the
"Holder") for any purpose and as the person entitled to exercise the rights
represented by the Warrants evidenced hereby, and neither the Company nor the
Warrant Agent, nor any agent of the Company or the Warrant Agent shall be
affected by any notice to the contrary, except that the Warrant Agent and the
Company shall be entitled to rely on and act pursuant to instructions of
Depositary Participants as contemplated by Article II of this Agreement. This
Section 4.02 shall be without prejudice to the rights of Holders as described
elsewhere herein.

                                   ARTICLE V

                          CONCERNING THE WARRANT AGENT

           SECTION 5.01. Warrant Agent. (a) The Company hereby appoints
                         -------------
Citibank, N.A. as Warrant Agent of the Company in respect of the Warrants and
Global Warrant Certificate upon the terms and subject to the conditions set
forth herein and in the Global Warrant Certificate; and Citibank, N.A. hereby
accepts such appointment. The Warrant Agent shall have the powers and authority
granted to and conferred upon it in the Global Warrant Certificate and hereby
and such further powers and authority acceptable to it to act on behalf of the
Company as the Company may hereafter grant to or confer upon it. All of the
terms and provisions with respect to such powers and authority contained in the
Global Warrant Certificate are subject to and governed by the terms and
provisions hereof.

           (b) The Warrant Agent covenants and agrees to maintain offices,
staffed by qualified personnel, with adequate facilities for the discharge of
its responsibilities under this Warrant Agreement, including without limitation
the computation of the Cash Settlement Amounts and the timely settlement of the
Warrants upon exercise thereof.

           SECTION 5.02. Conditions of Warrant Agent's Obligations. The Warrant
                         -----------------------------------------
Agent accepts its obligations herein set forth upon the terms and conditions
hereof and of the Global Warrant Certificates including the following, to all of
which the Company agrees and to all of which the rights hereunder of the Holders
and beneficial owners from time to time of the Warrants shall be subject:

           (a) The Company agrees promptly to pay the Warrant Agent the
compensation to be agreed upon with the Company for all services rendered by the
Warrant Agent and to reimburse the Warrant Agent for its reasonable
out-of-pocket expenses (including counsel fees and expenses) incurred by the
Warrant Agent without negligence, bad faith or breach of this Agreement on its
part in connection with the services rendered by it hereunder. The Company also
agrees to indemnify the Warrant Agent for, and to hold it harmless against, any
loss, liability or expense (including reasonable attorneys' fees and expenses)
incurred without negligence, bad faith or breach of this Agreement on the part
of the Warrant Agent, arising out of or in connection with it acting as such
Warrant Agent hereunder or with respect to

                                       22
<PAGE>

the Warrants or the Global Warrant Certificate, as well as the reasonable costs
and expenses of defending against any claim of liability in the premises.

           (b) In acting under this Agreement and in connection with the Global
Warrant Certificate, the Warrant Agent is acting solely as agent of the Company
and does not assume any obligation or relationship of agency or trust for or
with any of the owners or Holders of the Warrants.

           (c) The Warrant Agent may consult with counsel satisfactory to it,
and the opinion of such counsel shall be full and complete authorization and
protection in respect of any action taken, suffered or omitted by it hereunder
in good faith and in accordance with the opinion of such counsel.

           (d) The Warrant Agent shall be protected and shall incur no liability
for or in respect of any action taken or omitted or thing suffered by it in
reliance upon any Global Warrant Certificate, notice, direction, consent,
certificate, affidavit, statement or other paper or document reasonably believed
by it to be genuine and to have been presented or signed by the proper parties.

           (e) The Warrant Agent, and its officers, directors and employees, may
become the owner of, or acquire an interest in, any Warrants or other
obligations of the Company, with the same rights that it or they would have if
it were not the Warrant Agent hereunder, and, to the extent permitted by
applicable law, it or they may engage or be interested in any financial or other
transaction with the Company and may act on, or as depositary, trustee or agent
for, any committee or body of Holders of Warrants or other obligations of the
Company as freely as if it were not the Warrant Agent hereunder.

           (f) The Warrant Agent shall not be under any liability for interest
on any monies at any time received by it pursuant to any of the provisions of
this Agreement or of the Global Warrant Certificate nor shall it be obligated to
segregate such monies from other monies held by it, except as required by law.
The Warrant Agent shall not be responsible for advancing funds on behalf of the
Company.

           (g) The Warrant Agent shall not be under any responsibility with
respect to the validity or sufficiency of this Agreement or the execution and
delivery hereof (except the due execution and delivery hereof by the Warrant
Agent) or with respect to the validity or execution of the Global Warrant
Certificate (except its authentication thereof).

           (h) The recitals contained herein and in the Global Warrant
Certificate (except as to the Warrant Agent's authentication thereon) shall be
taken as the statements of the Company and the Warrant Agent assumes no
responsibility for the correctness of the same.

           (i) The Warrant Agent shall be obligated to perform only such duties
as are herein and in the Global Warrant Certificate specifically set forth and
no implied duties or obligations shall be read into this Agreement or the Global
Warrant Certificate against the Warrant Agent. The Warrant Agent shall not be
under any obligation to take any action hereunder likely to involve it in any
expense or liability, the payment of which is not, in its reasonable opinion,
assured to it. The Warrant Agent shall not be accountable or under any duty

                                       23
<PAGE>

or responsibility for the use by the Company of the Global Warrant Certificate
authenticated by the Warrant Agent and delivered by it to the Company pursuant
to this Agreement or for the application by the Company of any proceeds. The
Warrant Agent shall have no duty or responsibility in case of any default by the
Company in the performance of its covenants or agreements contained herein or in
the Global Warrant Certificate or in the case of the receipt of any written
demand from a Holder of a Warrant with respect to such default, except as
provided in Section 6.02 hereof, including, without limiting the generality of
the foregoing, any duty or responsibility to initiate or attempt to initiate any
proceedings at law or otherwise or to make any demand upon the Company.

           (j) Unless herein or in the Global Warrant Certificate otherwise
specifically provided, any order, certificate, notice, request, direction or
other communication from the Company made or given by the Company under any
provision of this Agreement shall be sufficient if signed by its President,
Chairman of the Board, officer serving as Chief Financial Officer, Treasurer,
any Executive Vice President or any Vice President.

           SECTION 5.03. Resignation and Appointment of Successor. (a) The
                         ----------------------------------------
Company agrees, for the benefit of the Holders from time to time of the
Warrants, that there shall at all times be a Warrant Agent hereunder until all
the Warrants are no longer exercisable.

           (b) The Warrant Agent may at any time resign as such agent by giving
written notice to the Company of such intention on its part, specifying the date
on which its desired resignation shall become effective, subject to the
appointment of a successor Warrant Agent, and acceptance of such appointment by
such successor Warrant Agent, as hereinafter provided. The Warrant Agent
hereunder may be removed at any time by the filing with it of an instrument in
writing signed by or on behalf of the Company and specifying such removal and
the date when it shall become effective. Such resignation or removal shall take
effect upon the appointment by the Company, as hereinafter provided, of a
successor Warrant Agent (which shall be a banking institution organized under
the laws of the United States of America, or one of the states thereof and
having an office or an agent's office south of Chambers Street in the Borough of
Manhattan, The City of New York) and the acceptance of such appointment by such
successor Warrant Agent. In the event a successor Warrant Agent has not been
appointed and accepted its duties within 90 days of the Warrant Agent's notice
of resignation, the Warrant Agent may apply to any court of competent
jurisdiction for the designation of a successor Warrant Agent. The obligation of
the Company under Section 5.02(a) shall continue to the extent set forth therein
notwithstanding the resignation or removal of the Warrant Agent and shall
survive the termination of this Agreement.

           (c) In case at any time the Warrant Agent shall resign, or shall be
removed, or shall become incapable of acting, or shall be adjudged bankrupt or
insolvent, or make an assignment for the benefit of its creditors or consent to
the appointment of a receiver or custodian of all or any substantial part of its
property, or shall admit in writing its inability to pay or meet its debts as
they mature, or if a receiver or custodian of it or all or any substantial part
of its property shall be appointed, or if any public officer shall have taken
charge or control of the Warrant Agent or of its property or affairs, for the
purpose of rehabilitation, conservation or liquidation, a successor Warrant
Agent, qualified as aforesaid, shall be appointed by the Company by an
instrument in writing, filed with the successor Warrant Agent. Upon the

                                       24
<PAGE>

appointment as aforesaid of a successor Warrant Agent and acceptance by the
latter of such appointment, the Warrant Agent so superseded shall cease to be
Warrant Agent hereunder.

           (d) Any successor Warrant Agent appointed hereunder shall execute,
acknowledge and deliver to its predecessor and to the Company an instrument
accepting such appointment hereunder, and thereupon such successor Warrant
Agent, without any further act, deed or conveyance, shall become vested with all
the authority, rights, powers, trusts, immunities, duties and obligations of
such predecessor with like effect as if originally named as Warrant Agent
hereunder, and such predecessor, upon payment of its charges and disbursements
then unpaid, shall thereupon become obligated to transfer, deliver and pay over,
and such successor Warrant Agent shall be entitled to receive, all monies,
securities and other property on deposit with or held by such predecessor, as
Warrant Agent hereunder.

           (e) Any corporation into which the Warrant Agent hereunder may be
merged or converted or any corporation with which the Warrant Agent may be
consolidated, or any corporation resulting from any merger, conversion or
consolidation to which the Warrant Agent shall be a party, or any corporation to
which the Warrant Agent shall sell or otherwise transfer all or substantially
all of the corporate trust business of the Warrant Agent, provided that it shall
be qualified as aforesaid, shall be the successor Warrant 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.

                                   ARTICLE VI

                                  MISCELLANEOUS

           SECTION 6.01. Amendment. (a) This Agreement and the Global Warrant
                         ---------
Certificate may be amended by the Company and the Warrant Agent, without the
consent of the Holder of the Global Warrant Certificate or the beneficial
owners, for the purpose of curing any ambiguity, or of curing, correcting or
supplementing any defective or inconsistent provision contained herein or
therein, for the purpose of appointing a successor Depositary in accordance with
paragraph (d) of Section 1.01, for the purpose of issuing Warrants in definitive
form in accordance with paragraph (a) of Section 1.01, or in any other manner
which the Company may deem to be necessary or desirable and which will not
materially and adversely affect the interests of the Holders of the Warrants.
Notwithstanding anything in this Section 6.01 to the contrary, this Agreement
may not be amended to provide for the authentication by the Warrant Agent of one
or more Global Warrant Certificates evidencing in excess of Warrants originally
issued unless and until the Warrant Agent has received notice from the American
Stock Exchange or any successor Self-Regulatory Organization that additional
Warrants in excess of Warrants originally issued have been approved for listing
on such exchange.

           (b) The Company and the Warrant Agent may modify or amend this
Agreement and the Global Warrant Certificate, with the consent of the beneficial
owners of not fewer than a majority in number of the then outstanding
Unexercised Warrants affected by such modification or amendment, for any
purpose; provided, however, that no such modification or amendment that changes
the Index Strike Value so as to adversely affect the beneficial owners, shortens
the period of time during which the Warrants may be exercised or otherwise
materially and adversely affects the exercise rights of the beneficial owners or
reduces the percentage of the

                                       25
<PAGE>

number of outstanding Warrants the consent of the beneficial owners of which is
required for modification or amendment of this Agreement or the Global Warrant
Certificate may be made without the consent of the beneficial owners of Warrants
affected thereby.

           SECTION 6.02. Notices and Demands to the Company and Warrant Agent.
                         ----------------------------------------------------
If the Warrant Agent shall receive any notice or demand addressed to the Company
by any Holder pursuant to the provisions of the Global Warrant Certificate, the
Warrant Agent shall promptly forward such notice or demand to the Company.

           SECTION 6.03. Addresses for Notices. Any communications from the
                         ---------------------
Company to the Warrant Agent with respect to this Agreement shall be addressed
to Citibank, N.A., 111 Wall Street, New York, NY 10005, (facsimile: (212)
825-3483) (telephone: (212) 657-9055), Attention: Corporate Trust Services; any
communications from the Warrant Agent to the Company with respect to this
Agreement shall be addressed to Merrill Lynch & Co., Inc., South Tower, World
Financial Center, 225 Liberty Street, New York, NY 10080-6107 (facsimile: (212)
236-6004) (telephone: (212) 236-6112), Attention: Treasurer (first copy) and
Merrill Lynch & Co., Inc., 100 Church Street, 12th Floor, New York, NY 10007
(facsimile: (212) 602-8436) (telephone: (212) 602-8444), Attention: Corporate
Secretary (second copy); and any communications from the Warrant Agent to the
Calculation Agent with respect to this Agreement shall be addressed to Merrill
Lynch, Pierce, Fenner & Smith, World Financial Center, North Tower, 250 Vesey
Street, New York, NY, 100281 Attention: Steven Bodurtha (facsimile: (212) 449-
6576) (telephone: (212) 449-6577) (or such other address as shall be specified
in writing by the Warrant Agent, the Company or the Calculation Agent,
respectively).

           SECTION 6.04. Notices to Holders. The Company or the Warrant Agent
                         ------------------
may cause to have notice given to the beneficial owners of interests in the
Global Warrant Certificate by providing the Depositary with a form of notice to
be distributed by the Depositary to Depositary Participants in accordance with
the customs and practices of the Depositary.

           SECTION 6.05. Applicable Law. The validity, interpretation and
                         --------------
performance of this Agreement and each Warrant issued hereunder and of the
respective terms and provisions thereof shall be governed by the laws of the
State of New York applicable to agreements made and to be performed in such
State.

           SECTION 6.06. Obtaining of Governmental Approvals. The Company shall
                         -----------------------------------
from time to time take all actions which may be necessary to obtain and keep
effective any and all permits, consents and approvals of governmental agencies
and authorities and the American Stock Exchange and securities acts filings
under United States Federal and State laws, which may be or become requisite in
connection with the issuance, sale, trading, transfer or delivery of the
Warrants, the Global Warrant Certificate and the exercise of the Warrants.

           SECTION 6.07. Persons Having Rights Under Warrant Agreement. Nothing
                         ---------------------------------------------
in this Agreement expressed or implied and nothing that may be inferred from any
of the provisions hereof is intended, or shall be construed, to confer upon, or
give to, any person or corporation other than the Company, the Warrant Agent,
and the Holders any right, remedy or claim under or by reason of this Agreement
or of any covenant, condition, stipulation, promise or agreement hereof; and all
covenants, conditions, stipulations, promises and agreements in this

                                       26
<PAGE>

Agreement contained shall be for the sole and exclusive benefit of the Company
and the Warrant Agent and their successors and of the registered Holders of the
Warrant Certificate.

           SECTION 6.08. Headings. The descriptive headings of the several
                         --------
Articles and 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.

           SECTION 6.09. Counterparts. This Agreement may be executed in any
                         ------------
number of counterparts, each of which so executed shall be deemed to be an
original; but such counterparts shall together constitute but one and the same
instrument.

           SECTION 6.10. Inspection of Agreement. A copy of this Agreement shall
                         -----------------------
be available at all reasonable times at the principal corporate trust office of
the Warrant Agent, for inspection by the Depositary Participants and the
Holders.

                                       27
<PAGE>

           IN WITNESS WHEREOF, this Agreement has been duly executed by the
parties hereto as of the day and year first above written.

                                    MERRILL LYNCH & CO., INC.

                                    By
                                       -------------------------------
                                       John C. Stomber
                                       Senior Vice President
                                       and Treasurer

                                    CITIBANK, N.A.

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

                                       28
<PAGE>

                                                                       EXHIBIT A

                      Form of Global Warrant Certificate

THIS WARRANT IS A GLOBAL WARRANT WITHIN THE MEANING OF THE WARRANT AGREEMENT
HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF A DEPOSITORY OR A
NOMINEE THEREOF.  UNLESS AND UNTIL IT IS EXCHANGED IN WHOLE OR IN PART FOR
WARRANTS IN CERTIFICATED FORM, THIS WARRANT MAY NOT BE TRANSFERRED EXCEPT AS A
WHOLE BY THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION ("DTC"), TO A
NOMINEE OF DTC OR BY DTC OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITORY OR A
NOMINEE OF SUCH SUCCESSOR DEPOSITORY.  UNLESS THIS WARRANT IS PRESENTED BY AN
AUTHORIZED REPRESENTATIVE OF DTC TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF
TRANSFER, EXCHANGE OR PAYMENT, AND ANY WARRANT ISSUED IS REGISTERED IN THE NAME
OF CEDE & CO. OR IN SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE
OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS
REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER
USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS
THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

No. R-                                                      CUSIP No. 590188 421

                           GLOBAL WARRANT CERTIFICATE

         Representing up to           Russell 2000 Index Call Warrants

                              Expiring May   , 2001

                            MERRILL LYNCH & CO., INC.

          This certifies that CEDE & Co. or registered assigns is the registered
Holder of             Russell 2000 Index Call Warrants Expiring May   , 2001
(the "Warrants") or such lesser amount as is indicated in the records of
Citibank, N.A., as Warrant Agent. Each Warrant entitles the beneficial owner
thereof, subject to the provisions contained herein and in the Warrant Agreement
referred to below, to receive from Merrill Lynch & Co., Inc. (the "Company") the
cash settlement amount, if any, (the "Cash Settlement Amount") specified in
Section 2.02(e), or the Alternative Settlement Amount specified in Section
2.04(a), of the Warrant Agreement.  The Holder hereof shall not be entitled to
any interest on any Cash Settlement Amount to which it is otherwise entitled
(unless the Company shall default in the payment of such Cash Settlement
Amount).  The Warrants may be exercised on any New York Business Day from their
date of issuance until 1:00 P.M., New York City time, on the earlier of (i) the
second scheduled Index Calculation Day immediately preceding May   , 2001 (the
"Expiration Date") or (ii) the date of earlier automatic exercise as further
described below and as provided in the Warrant Agreement.  Except in the cases
of automatic exercise or cancellation, not fewer than 100 Warrants may be
exercised by or on behalf of a beneficial owner on any one day.  All exercises
of Warrants (other

                                       29
<PAGE>

than on automatic exercise) are subject, at the Company's option, to the
limitation that not more than 20% of the Warrants originally issued (provided,
however, that no more than 10% of the Warrants originally issued shall be
exercised for the account of any beneficial owner) may be exercised on any
Exercise Date and not more than 10% of the Warrants originally issued may be
exercised by or on behalf of any beneficial owner, either individually or in
concert with any other beneficial owner, on any Exercise Date. References herein
to "U.S. dollars", "U.S.$" or "$" are to the currency of the United States of
America. The term "New York Business Day", as used herein, means any day other
than a Saturday or Sunday or a day on which commercial banks in The City of New
York are required or authorized by law or executive order to be closed.

           This Global Warrant Certificate is issued under and in accordance
with the Warrant Agreement, dated as of May   , 1999 (the "Warrant Agreement"),
between the Company and the Warrant Agent, and is subject to the terms and
provisions contained in the Warrant Agreement, to all of which terms and
provisions all beneficial owners of the Warrants evidenced by this Global
Warrant Certificate and the Holder of this Global Warrant Certificate consent by
acceptance hereof by the Depositary (as defined below). Copies of the Warrant
Agreement are on file at the Warrant Agent office of the Warrant Agent in The
City of New York. Except as provided in the Warrant Agreement, beneficial owners
of the Warrants evidenced by this Global Warrant Certificate shall not be
entitled to receive definitive Warrants evidencing their Warrants. Warrants
shall be held through a depositary selected by the Company which initially is
The Depository Trust Company (the "Depositary", which term, as used herein,
includes any successor depositary selected by the Company as further provided in
the Warrant Agreement).

           Capitalized terms included herein but not defined herein have the
same meaning assigned thereto in the Warrant Agreement.

           Subject to the provisions hereof and of the Warrant Agreement, each
Warrant evidenced hereby may be irrevocably exercised at the option of the
Holder in whole but not in part on any New York Business Day from its date of
issuance until 1:00 P.M., New York City time, on the second scheduled Index
Calculation Day immediately preceding the Expiration Date. Except in the cases
of automatic exercise or cancellation, each Warrant evidenced hereby may be
exercised by written notice to the Warrant Agent from a Depositary Participant
acting on behalf of the beneficial owner of such Warrant and upon receipt by the
Warrant Agent through delivery of such Warrant free on the records of the
Depositary to the Warrant Agent's Depositary Participant Account (entitled
Citibank, N.A. Corporate Trust Warrant Agent Account, No. 2659, or such other
account of the Warrant Agent at the Depositary as the Warrant Agent shall
designate in writing to the Company and to the Depositary (the "Warrant
Account")) ("Proper Delivery"); provided, however, that notices of exercise are
subject to rejection by the Warrant Agent as provided in the Warrant Agreement.

           The Warrant Agent shall promptly cause its records to be marked to
reduce the number of Unexercised Warrants evidenced by this Global Warrant
Certificate by the number of Warrants transferred to the Warrant Account from
time to time and for which payment of the Cash Settlement Amount is made as
provided above.

                                       30
<PAGE>

           All Warrants for which the Warrant Agent has not received a valid
Exercise Notice at or prior to 1:00 P.M., New York City time, on (i) the second
scheduled Index Calculation Day immediately preceding the Expiration Date or
(ii) the close of business on the Delisting Date shall be automatically
exercised, without any required delivery of notice of exercise or delivery of
the Warrants from any relevant Depositary Participant to the Warrant Agent. The
first New York Business Day preceding such Expiration Date or Delisting Date, as
the case may be, shall be the Exercise Date for such automatically exercised
Warrants. The Company shall advise the Warrant Agent of the date of any expected
delisting or permanent suspension of trading of the Warrants as soon as is
practicable and shall immediately inform the Warrant Agent after the Company has
received notice that such delisting or suspension has occurred and that the
Warrants are not accepted for listing on another Self-Regulatory Organization,
but in no event will such notice be given to the Warrant Agent later than 5:00
P.M., New York City time, on the New York Business Day preceding the date that
such delisting or suspension occurs.

           The Company, the Warrant Agent and any agent of the Company or the
Warrant Agent may deem and treat the registered owner hereof as the absolute
owner of the Warrants evidenced hereby (notwithstanding any notation of
ownership or other writing hereon) for any purpose and as the person entitled to
exercise the rights represented by the Warrants evidenced hereby, and neither
the Company nor the Warrant Agent nor any agent of the Company or the Warrant
Agent shall be affected by any notice to the contrary, subject to certain
provisions of the Warrant Agreement, except that the Company and the Warrant
Agent shall be entitled to rely on and act pursuant to instructions of
Depositary Participants as contemplated herein and in the Warrant Agreement.

           Subject to the terms of the Warrant Agreement and certain
restrictions set forth above, upon due presentment for registration of transfer
of this Global Warrant Certificate at the Warrant Agent Office of the Warrant
Agent in New York City, the Company shall execute and the Warrant Agent shall
authenticate and deliver in the name of the designated transferee a new Global
Warrant Certificate of like tenor and evidencing a like number of Unexercised
Warrants as evidenced by this Global Warrant Certificate at the time of such
registration of transfer, which shall be issued to the designated transferee in
exchange for this Global Warrant Certificate, subject to the limitations
provided in the Warrant Agreement, without charge.

           This Global Warrant Certificate and the Warrant Agreement are subject
to amendment as provided in the Warrant Agreement.

           This Global Warrant Certificate shall not be valid or obligatory for
any purpose until authenticated by the Warrant Agent.

                                       31
<PAGE>

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

                                        MERRILL LYNCH & CO., INC.

                                        By
                                           -----------------------------
                                                  Treasurer


[SEAL]                                  Attest
                                               -------------------------
                                                      Secretary

This is one of the Warrants
referred to in the within-mentioned
Warrant Agreement:

CITIBANK, N.A. as Warrant Agent

By
   ----------------------------
    Authorized Officer

Date: May   , 1999

                                       32
<PAGE>

                 Form of Transfer of Global Warrant Certificate

Citibank, N.A., as Warrant Agent
Corporate Trust Services
111 Wall Street
New York, New York 10005

          , the registered Holder of the Global  Warrant Certificate
representing all unexercised Merrill Lynch &  Co., Inc. Russell 2000 Index Call
Warrants, Expiring May   , 2001, hereby requests the transfer of such Global
Warrant Certificate to

                                         [NAME OF REGISTERED HOLDER]
Dated:


                                              By:

                                       33
<PAGE>

                                                                      EXHIBIT B

                     Form of Irrevocable Notice of Exercise

Citibank, N.A.,
 as Warrant Agent
Corporate Trust Services
111 Wall Street
New York, New York 10005

(Facsimile:  (212) 825-3483)
(Telephone:  (212)-657-9055)

               Re:  Exercise of Merrill Lynch & Co., Inc.
                    Russell 2000 Index Call Warrants
                    Expiring May   , 2001 ("Warrants")
                    ----------------------------------

          1.  We refer to the Warrant Agreement dated as of May   , 2001 (the
"Warrant Agreement") between Merrill Lynch & Co., Inc. (the "Company") and
Citibank, N.A. (the "Warrant Agent").  Capitalized terms used herein and not
otherwise defined shall have the meanings specified in the Warrant Agreement.
On behalf of certain clients, each of whom is exercising no fewer than 100
Warrants and whose Warrants are held in our name, we hereby irrevocably exercise
                   Warrants (the "Exercised Warrants"). We hereby certify that
at the time this notice is delivered to you, we hold in our name on behalf of
each such client a settled position of Warrants in an amount at least equal to
the number of Warrants that we are hereby exercising on behalf of such client.
We hereby acknowledge that this Irrevocable Notice of Exercise and delivery of
the Exercised Warrants free to the Warrant Account must be received by you by
1:00 P.M., New York City time, on the date hereof in order for the Exercise Date
of the Exercised Warrants to be such New York Business Day and that if this
Irrevocable Notice of Exercise or such Exercised Warrants are received by you
after 1:00 P.M., New York City time, the Exercise Date of the Exercised Warrants
shall be the next succeeding New York Business Day.

          2.  We hereby certify that we are a participant of The Depository
Trust Company (the "Depositary") with the present right to use and receive its
services.

                                       34
<PAGE>

          3.  The Participant shall disburse the Cash Settlement Amount, if any,
with respect to the Exercised Warrants in accordance with its standard
procedures.

Dated:

                            [NAME OF DEPOSITARY
                            PARTICIPANT]

                            By _________________________
                              Authorized Signature

                            [Address]
                            Telephone:
                            Facsimile:
                            Participant
                            Number:

                                       35
<PAGE>

                                                                       EXHIBIT B
                                                                       ---------



                            CONFIRMATION OF EXERCISE

          We hereby confirm that the total number of Warrants mentioned above
(the "Exercised Warrants") have been exercised at a Index Spot Value of
and that the aggregate Cash Settlement Amount of U.S. $      (U.S. $5.00 per
Warrant) shall be made available to you in the form of a check four New York
Business Days after the Valuation Day for such Warrants.

          Capitalized terms included herein but not defined have the meanings
assigned thereto in the Warrant Agreement, dated as of May   , 1999, between
Merrill Lynch & Co., Inc. and Citibank, N.A., as Warrant Agent.

Dated:  May   , 1999

                              Citibank, N.A.
                                as Warrant Agent

                              By _________________________
                                    Authorized Officer


                              NOTICE OF REJECTION

          You are hereby notified that [the Irrevocable Notice of Exercise
delivered by you was determined by us not to have been [duly completed] [in
proper form]], in the manner set forth in the Warrant Agreement, dated as of May
  , 1999, between Merrill Lynch & Co., Inc. and Citibank, N.A., as Warrant
Agent.  Accordingly, we have rejected your Irrevocable Notice of Exercise as
being unsatisfactory as to form.

Dated:  May   , 1999

                              Citibank, N.A.
                                as Warrant Agent
                              By _________________________
                                    Authorized Officer

                                       36


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