FILE NO. 333-59997
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
       (TO THE PROSPECTUS AND PROSPECTUS SUPPLEMENT DATED JULY 30, 1998)
                                     PROSPECTUS NUMBER: 1784
 
 
                           MERRILL LYNCH & CO., INC.
                          MEDIUM-TERM NOTES, SERIES B
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
 
                                FIXED RATE NOTES
 
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<S>                      <C>
 
PRINCIPAL AMOUNT:        $10,000,000
 
 
CUSIP NUMBER:            59018SS39
 
 
INTEREST RATE:           6.00000%
 
 
ORIGINAL ISSUE DATE:     October 20, 1998
 
 
STATED MATURITY DATE:    October 21, 2002
 
 
INTEREST PAYMENT DATES:  Each May 15 and November 15, commencing on November 16, 1998 through and on
                         the Stated Maturity Date, subject to 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 cannot be redeemed prior to the Stated Maturity Date.
 
 
FORM:                    The Notes are being issued in fully registered book-entry form.
 
 
TRUSTEE:                 The Chase Manhattan Bank
 
 
DATED:                   October 15, 1998
 
 
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