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)  (IRS employer identification no.)
                                         
     World Financial Center                                   10281
         North Tower                                        ----------
      250 Vesey Street                                      (Zip Code)
      New York, New York 
                   
- ----------------------------------------
(Address of principal executive offices)


SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(b) OF THE ACT:

     TITLE OF EACH CLASS TO BE SO        NAME OF EACH EXCHANGE ON WHICH EACH
              REGISTERED                      CLASS IS TO BE REGISTERED
- --------------------------------------        -------------------------
     Medium-Term Notes, Series B,              American Stock Exchange 
        Stock Linked Notes due
          November 28, 2003

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

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

Securities Act registration statement file number to which this form relates:
333-44173 (if applicable).

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SECURITIES TO BE REGISTERED PURSUANT TO SECTION 12(g) OF THE ACT:
None.

ITEM 1.  DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.

The description of the general terms and provisions of the Medium-Term Notes,
Series B, Stock Linked Notes due November 28, 2003 to be issued by Merrill Lynch
& Co., Inc. set forth in the Pricing Supplement dated May 27, 1998, attached
hereto as Exhibit 99(a), and the Prospectus Supplement dated March 12, 1998 and
Prospectus dated January 29, 1998, attached hereto as Exhibit 99(b), are hereby
incorporated by reference.


ITEM 2.  EXHIBITS.

     99(a) Pricing Supplement dated May 27, 1998 (incorporated herein by
           reference to the Registrant's filing pursuant to Rule 424(b)).

     99(b) Prospectus Supplement dated March 12, 1998 and Prospectus dated
           January 29, 1998.*

     99(c) Form of Note.

     99(d) Copy of Indenture between Merrill Lynch & Co., Inc. and The Chase
           Manhattan Bank dated as of October 1, 1993.*



*    Incorporated herein by reference to the Registrant's Registration Statement
     on Form S-3 (File No. 333-44173).

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                                   SIGNATURE


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


                                                  MERRILL LYNCH & CO., INC.



                                                  By:  /s/ Andrea L. Dulberg
                                                       ---------------------
                                                       Andrea L. Dulberg
                                                       Secretary


May 28, 1998

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                               INDEX TO EXHIBITS


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


99(a)  Pricing Supplement dated May 27, 1998 (incorporated herein by
       reference to the Registrant's filing pursuant to Rule 424(b)).
       
99(b)  Prospectus Supplement dated March 12, 1998 and Prospectus dated
       January 29, 1998.*
       
99(c)  Form of Note.
       
99(d)  Copy of Indenture between Merrill Lynch & Co., Inc. and The Chase
       Manhattan Bank dated as of October 1, 1993.*



*    Incorporated herein by reference to the Registrant's Registration Statement
     on Form S-3 (File No. 333-44173).