1
                                   EXHIBIT 4.5

        Form of New Capital Security Certificate for ML Capital Trust I

   2

                                                                     EXHIBIT 4.5

                      SERIES B CAPITAL SECURITY CERTIFICATE

                           [FORM OF FACE OF SECURITY]

               [IF THIS CAPITAL SECURITY IS A GLOBAL SECURITY, INSERT: THIS
CAPITAL SECURITY IS A GLOBAL CAPITAL SECURITY WITHIN THE MEANING OF THE
DECLARATION HEREINAFTER REFERRED TO AND IS REGISTERED IN THE NAME OF THE
DEPOSITORY TRUST COMPANY (THE "CLEARING AGENCY") OR A NOMINEE OF THE CLEARING
AGENCY. THIS CAPITAL SECURITY IS EXCHANGEABLE FOR CAPITAL SECURITIES REGISTERED
IN THE NAME OF A PERSON OTHER THAN THE CLEARING AGENCY OR ITS NOMINEE ONLY IN
THE LIMITED CIRCUMSTANCES DESCRIBED IN THE DECLARATION AND NO TRANSFER OF THIS
CAPITAL SECURITY (OTHER THAN A TRANSFER OF THIS CAPITAL SECURITY AS A WHOLE BY
THE CLEARING AGENCY TO A NOMINEE OF THE CLEARING AGENCY OR BY A NOMINEE OF THE
CLEARING AGENCY TO THE CLEARING AGENCY OR ANOTHER NOMINEE OF THE CLEARING
AGENCY) MAY BE REGISTERED EXCEPT IN LIMITED CIRCUMSTANCES.

               UNLESS THIS CAPITAL SECURITY IS PRESENTED BY AN AUTHORIZED
REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY (55 WATER STREET, NEW YORK, NEW
YORK) TO THE TRUST OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR
PAYMENT, AND ANY CAPITAL SECURITY ISSUED IS REGISTERED IN THE NAME OF CEDE & CO.
OR SUCH OTHER NAME AS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF THE
DEPOSITORY TRUST COMPANY AND ANY PAYMENT HEREON IS MADE TO CEDE & CO., ANY
TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY A PERSON IS
WRONGFUL SINCE THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.]

               THE CAPITAL SECURITIES WILL BE ISSUED AND MAY BE TRANSFERRED ONLY
IN BLOCKS HAVING A LIQUIDATION AMOUNT OF NOT LESS THAN $100,000 (100 CAPITAL
SECURITIES). ANY SUCH TRANSFER OF CAPITAL SECURITIES IN A BLOCK HAVING A
LIQUIDATION AMOUNT OF LESS THAN $100,000 SHALL BE DEEMED TO BE VOID AND OF NO
LEGAL EFFECT WHATSOEVER. ANY SUCH TRANSFEREE SHALL BE DEEMED NOT TO BE THE
HOLDER OF SUCH CAPITAL SECURITIES FOR ANY PURPOSE, INCLUDING BUT NOT LIMITED TO
THE RECEIPT OF DISTRIBUTIONS OF SUCH CAPITAL SECURITIES, AND SUCH TRANSFEREE
SHALL BE DEEMED TO HAVE NO INTEREST WHATSOEVER IN SUCH CAPITAL SECURITIES.




   3



Certificate No.                                           Aggregate Liquidation
                                                               Amount:  $
Number of Series B
Capital Securities:
                                                              CUSIP NO.

               Certificate Evidencing Series B Capital Securities

                                       of

                               ML Capital Trust I

                       Series B 9.875% Capital Securities
                (liquidation amount $1,000 per Capital Security)

               ML Capital Trust I, a statutory business trust created under the
laws of the State of Delaware (the "Trust"), hereby certifies that _________
(the "Holder") is the registered owner of [______ securities of the Trust]* [the
aggregate liquidation amount of securities of the Trust specified in Schedule A
hereto]** representing undivided beneficial interests in the assets of the Trust
designated the Series B 9.875% Capital Securities (liquidation amount $1,000 per
Capital Security) (the "Capital Securities"). Subject to the Declaration (as
defined below), the Capital Securities are transferable on the books and records
of the Trust, in person or by a duly authorized attorney, upon surrender of this
certificate duly endorsed and in proper form for transfer. The designation,
rights, privileges, restrictions, preferences and other terms and provisions of
the Capital Securities represented hereby are issued and shall in all respects
be subject to the provisions of the Amended and Restated Declaration of Trust of
the Trust dated as of March 10, 1997, as the same may be amended from time to
time (the "Declaration"), including the designation of the terms of the Capital
Securities as set forth in Annex I to the Declaration. Capitalized terms used
but not defined herein shall have the meaning given them in the Declaration. The
Sponsor will provide a copy of the Declaration, the Capital Securities
Guarantee, the Common Securities Guarantee (as may be appropriate), and the
Indenture (including any supplemental indenture) to a Holder without charge upon
written request to the Trust at its principal place of business.

               Upon receipt of this certificate, the Holder is bound by the
Declaration and is entitled to the benefits thereunder and to the benefits of
the Capital Securities Guarantee to the extent provided therein.

               By acceptance, the Holder agrees to treat, for United States
federal income tax purposes, the Debentures as indebtedness and the Capital
Securities as evidence of indirect beneficial ownership in the Debentures.

*  Insert in Definitive Capital Securities only.
** Insert in Global Capital Securities only.


                                      2

   4



               IN WITNESS WHEREOF, the Trust has duly executed this certificate.

Dated:  ________ __, 1997


                                    ML CAPITAL TRUST I


                                    By:
                                       --------------------------------
                                       Name:  Brian M. Hartline
                                       Title:    Administrative Trustee


               PROPERTY TRUSTEE'S CERTIFICATE OF AUTHENTICATION

               This is one of the Capital Securities referred to in the
within-mentioned Declaration.



                                                   THE BANK OF NEW YORK
                                                   as Property Trustee
Dated: ______ __, 1997

                                                   By:
                                                      ------------------------
                                                          Authorized Signatory


                                      3

   5



                          [FORM OF REVERSE OF SECURITY]

               Distributions payable on each Capital Security will be fixed at a
rate per annum of 9.875% (the "Coupon Rate") of the liquidation amount of $1,000
per Capital Security, such rate being the rate of interest payable on the
Debentures to be held by the Property Trustee. Distributions in arrears for more
than one semi-annual period will bear interest thereon compounded semi-annually
at the Coupon Rate (to the extent permitted by applicable law). Pursuant to the
Registration Rights Agreement, in certain limited circumstances the Debenture
Issuer will be required to pay Liquidated Damages (as defined in the
Registration Rights Agreement) with respect to the Debentures. The term
"Distributions," as used herein, includes such cash distributions and any such
interest and such Liquidated Damages payable unless otherwise stated. A
Distribution is payable only to the extent that payments are made in respect of
the Debentures held by the Property Trustee and to the extent the Property
Trustee has funds on hand legally available therefor.

               Distributions on the Capital Securities will be cumulative, will
accumulate from the most recent date to which Distributions have been paid or
duly provided for, if no Distributions have been paid or duly provided for, from
March 10, 1997 and will be payable semi-annually in arrears, on March 1 and
September 1 of each year, commencing on September 1, 1997, except as otherwise
described below. Distributions will be computed on the basis of a 360-day year
consisting of twelve 30-day months and, for any period less than a full calendar
month, the number of days elapsed in such month. As long as no Event of Default
has occurred and is continuing under the Indenture, the Debenture Issuer has the
right under the Indenture to defer payments of interest by extending the
interest payment period at any time and from time to time on the Debentures for
a period not exceeding 10 consecutive calendar semi-annual periods, including
the first such semi-annual period during such extension period (each an
"Extension Period"), provided that no Extension Period shall end on a date other
than an Interest Payment Date for the Debentures or extend beyond the Maturity
Date of the Debentures. As a consequence of such deferral, Distributions also
will be deferred. Despite such deferral, semi-annual Distributions will continue
to accumulate with interest thereon (to the extent permitted by applicable law,
but not at a rate exceeding the rate of interest then accruing on the
Debentures) at the Coupon Rate compounded semi-annually during any such
Extension Period. Prior to the termination of any such Extension Period, the
Debenture Issuer may further defer payments of interest by further extending
such Extension Period; provided that such Extension Period, together with all
such previous and further extensions within such Extension Period, may not
exceed 10 consecutive semi-annual periods, including the first semi-annual
period during such Extension Period, end on a date other than an Interest
Payment Date for the Debentures or extend beyond the Maturity Date of the
Debentures. Payments of accumulated Distributions will be payable to Holders as
they appear on the books and records of the Trust on the first record date after
the end of the Extension Period. Upon the termination of any Extension Period
and the payment of all amounts then due, the Debenture Issuer may commence a new
Extension Period, subject to the above requirements.



                                      4

   6



               Subject to the receipt of any required regulatory approval and to
certain other conditions set forth in the Declaration and the Indenture, the
Property Trustee may, at the direction of the Sponsor, at any time liquidate the
Trust and cause the Debentures to be distributed to the holders of the
Securities in liquidation of the Trust or, simultaneous with any redemption of
the Debentures, cause a Like Amount of the Securities to be redeemed by the
Trust.

               The Capital Securities shall be redeemable as provided in the
Declaration.


                                      5

   7



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


                                   ASSIGNMENT

FOR VALUE RECEIVED, the undersigned assigns and transfers this Capital Security
Certificate to:

- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
        (Insert assignee's social security or tax identification number)


- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
- --------------------------------------------------------------------------------
                    (Insert address and zip code of assignee)


and irrevocably appoints

- -----------------------------------------------------------------
- -----------------------------------------------------------------
                                                            agent to transfer
- -----------------------------------------------------------
this Capital Security Certificate on the books of the Trust. The agent may
substitute another to act for him or her.


Date:
      -----------------------

Signature:
           ------------------

(Sign exactly as your name appears on the other side of this Capital Security
Certificate)

Signature Guarantee*:
                                -----------------------------------

- ----------------------
*       Signature must be guaranteed by an "eligible guarantor institution" that
        is a bank, stockbroker, savings and loan association or credit union
        meeting the requirements of the Registrar, which requirements include
        membership or participation in the Securities Transfer Agents Medallion
        Program ("STAMP") or such other "signature guarantee program" as may be
        determined by the Registrar in addition to, or in substitution for,
        STAMP, all in accordance with the Securities and Exchange Act of 1934,
        as amended.


                                      6

   8


                                   Schedule A


        The initial number of Capital Securities evidenced by the Certificate to
which this Schedule is attached is ______ (having an aggregate liquidation
amount of $________). The notations in the following table evidence decreases
and increases in the number of Capital Securities evidenced by such Certificate.





                                                       Number of Capital
    Decrease in Num-         Increase in Num-        Securities Remaining
     ber of Capital           ber of Capital          after such Decrease         Notation by
       Securities               Securities                or Increase              Registrar
- ---------------------------------------------------------------------------------------------------
                                                                                        




                                      7