FILE NO. 333-59997
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
         (TO PROSPECTUS AND PROSPECTUS SUPPLEMENT DATED JULY 30, 1998)
 
                                     PROSPECTUS NUMBER: 1801
 
 
 
                           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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<S>                      <C>
 
PRINCIPAL AMOUNT:        $25,000,000
 
 
CUSIP NUMBER:            59018S U44
 
 
INTEREST RATE:           6.05000%
 
 
ORIGINAL ISSUE DATE:     December 15, 1998
 
 
STATED MATURITY DATE:    December 15, 2008
 
 
INTEREST PAYMENT DATES:  15th day of each month commencing January 15, 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 15, 2001
 
 
OTHER PROVISIONS:        The Notes are subject to redemption at the option of ML&Co., in whole,
                         semi-annually on each June 15 and December 15 commencing December 15, 
                         2001, 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:                   November 30, 1998
 
 
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