Exhibit 5(b)

                        [Letterhead of Brown & Wood LLP]



                                                        January 27, 1998



Merrill Lynch & Co., Inc.
World Financial Center
North Tower
250 Vesey Street
New York, New York  10281

Merrill Lynch Preferred Funding IV, L.P.  Merrill Lynch Preferred Funding V,
L.P.
c/o Merrill Lynch & Co., Inc.       c/o Merrill Lynch & Co., Inc.
World Financial Center              World Financial Center
North Tower                         North Tower
250 Vesey Street                    250 Vesey Street
New York, New York  10281           New York, New York  10281


Merrill Lynch Preferred Capital     Merrill Lynch Preferred Capital
Trust IV                            Trust V
c/o Merrill Lynch & Co., Inc.       c/o Merrill Lynch & Co., Inc.
World Financial Center              World Financial Center
North Tower                         North Tower
250 Vesey Street                    250 Vesey Street
New York, New York  10281           New York, New York  10281

Ladies and Gentlemen:

          We have acted as counsel to Merrill Lynch & Co., Inc., a Delaware
corporation (the "Company"), Merrill Lynch Preferred Funding IV, L.P., and
Merrill Lynch Preferred Funding V, L.P., Delaware limited partnerships (each, a
"Partnership"), and Merrill Lynch 

 
Preferred Capital Trust IV and Merrill Lynch Preferred Capital Trust V,
statutory business trusts formed under the laws of the State of Delaware (each,
a "Trust"), in connection with the preparation and filing by the Company, the
Partnerships and the Trusts with the Securities and Exchange Commission (the
"Commission") of a Registration Statement on Form S-3 (Registration No. 333-
44173) (the "Registration Statement") under the Securities Act of 1933, as
amended, with respect to (i) the guarantee (each, a "Trust Guarantee") to be
issued by the Company to The Chase Manhattan Bank, as trustee, for the benefit
of the holders of the Trust Originated Preferred Securities to be issued by each
Trust (the "Trust Preferred Securities"), (ii) the guarantee (each, a
"Partnership Guarantee") to be issued by the Company with respect to the
Partnership Preferred Securities to be issued by each Partnership (the
"Partnership Preferred Securities"), (iii) the guarantees (the "Investment
Guarantees") to be issued by the Company for the benefit of the holders of the
Partnership Preferred Securities with respect to certain debentures (the
"Debentures") to be issued by one or more of the Company's eligible controlled
affiliates and (iv) the subordinated debentures (the "Company Debentures") to be
issued by the Company to the Partnerships pursuant to respective indentures (the
"Company Indentures") between the Company and The Chase Manhattan Bank, as
trustee (the "Debenture Trustee"), each in the form filed as exhibits to the
Registration Statement. The Trust Guarantees, the Partnership Guarantees and the
Investment Guarantees are hereinafter collectively referred to as the
"Guarantees".

          We have reviewed the corporate action of the Company in connection
with the giving of the Guarantees and the issuance and sale of the Company
Debentures by the Company and have examined, and have relied as to matters of
fact upon, originals or copies certified or otherwise identified to our
satisfaction, of such corporate records, agreements, documents and other
instruments and such certificates or comparable documents of public officials
and of officers and representatives of the Company, and have made such other and
further investigations as we have deemed relevant and necessary as a basis for
the opinions hereinafter set forth.

          In such examination, we have assumed the genuineness of all
signatures, the legal capacity of natural persons, the authenticity of all
documents submitted to us as originals, the conformity to original documents of
all documents submitted to us certified or photostatic copies, and the
authenticity of the originals of such latter documents.

          Based upon the foregoing, and subject to the qualifications and
limitations stated herein, we are of the opinion:

          1.   When a Trust Guarantee has been duly authorized, executed and
delivered by the Company, and upon the issuance and sale of the related Trust
Preferred Securities to the holders of the Trust Preferred Securities in
accordance with the Registration Statement, such Trust Guarantee will constitute
a valid and legally binding obligation of the Company enforceable against the
Company in accordance with its terms.

          2.   When a Partnership Guarantee has been duly authorized, executed
and delivered by the Company, and upon the issuance and sale of the related
Partnership Preferred

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Securities to the holders of the Partnership Preferred Securities in accordance
with the Registration Statement, such Partnership Guarantee will constitute a
valid and legally binding obligation of the Company enforceable against the
Company in accordance with its terms.

          3.   When the Investment Guarantees have been duly authorized,
executed and delivered by the Company, and upon the issuance and sale of the
related Debentures to a Partnership in accordance with the Registration
Statement, such Investment Guarantees will constitute valid and legally binding
obligations of the Company enforceable against the Company in accordance with
their terms.

          4.   When the Company Debenture has been duly authorized, executed and
issued by the Company and upon the issuance and sale of the Company Debentures
to a Partnership in accordance with the Registration Statement (assuming due
authorization, execution and delivery of the Company Indenture by the Debenture
Trustee and due authentication of the Company Debenture by the Debenture
Trustee), such Company Debenture will constitute a valid and legally binding
obligation of the Company enforceable against the Company in accordance with its
terms.

          With respect to enforcement, the above opinions are qualified to the
extent that enforcement of the Guarantees or the Company Debentures may be
limited by bankruptcy, insolvency, reorganization, moratorium or similar laws
relating to or affecting creditors' rights generally and except as enforcement
thereof is subject to general equity principles (regardless of whether
enforcement is considered in a proceeding in equity or at law).

          We consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name wherever appearing in the
Registration Statement and any amendment thereto.

                                    Very truly yours,



                                    /s/ Brown & Wood LLP

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