FILE NO. 333-59997
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
         (TO PROSPECTUS AND PROSPECTUS SUPPLEMENT DATED JULY 30, 1998)
 
                                     PROSPECTUS NUMBER: 1803
 
 
 
                           MERRILL LYNCH & CO., INC.
                          MEDIUM-TERM NOTES, SERIES B
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
                           CALLABLE FIXED RATE NOTES
 
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PRINCIPAL AMOUNT:        $50,000,000
 
 
CUSIP NUMBER:            59018S U69
 
 
INTEREST RATE:           6.25000%
 
 
ORIGINAL ISSUE DATE:     December 21, 1998
 
 
STATED MATURITY DATE:    December 21, 2013
 
 
INTEREST PAYMENT DATES:  21st day of each month commencing January 21, 1999, through and
                         including the Stated Maturity Date, subject to the following business day
                         convention.
 
 
REPAYMENT AT THE OPTION
OF THE HOLDER:           The Notes cannot be repaid prior to the Stated Maturity Date.
 
 
REDEMPTION AT THE OPTION
OF THE COMPANY:          The Notes may be redeemed prior to the Stated Maturity Date, See "Other
                         Provisions"
 
 
INITIAL REDEMPTION DATE: December 21, 2002
 
 
OTHER PROVISIONS:        The Notes are subject to redemption at the option of ML&Co., in whole,
                         semi-annually on each June 21 and December 21 commencing December 21, 2002,
                         at a redemption price equal to 100% of the principal amount of the Notes
                         upon at least 30 days prior notice.
 
 
FORM:                    The Notes are being issued in fully registered book-entry form.
 
 
TRUSTEE:                 The Chase Manhattan Bank
 
 
DATED:                   December 7, 1998
 
 
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