FILE NO. 333-59997
                                                                  RULE 424(B)(3)
 
                             PROSPECTUS SUPPLEMENT
(TO PROSPECTUS DATED JULY 30, 1998 AND PROSPECTUS SUPPLEMENT DATED FEBRUARY 17,
                                     1999)
 
                                     PROSPECTUS NUMBER: 1854
 
 
 
                           MERRILL LYNCH & CO., INC.
                          MEDIUM-TERM NOTES, SERIES B
                   DUE NINE MONTHS OR MORE FROM DATE OF ISSUE
                           CALLABLE FIXED RATE NOTES
 
<TABLE>
<CAPTION>
 
<S>                      <C>
 
PRINCIPAL AMOUNT:        $25,000,000
 
 
CUSIP NUMBER:            59018S2H6
 
 
INTEREST RATE:           6,70000%
 
 
ORIGINAL ISSUE DATE:     March 26, 1999
 
 
STATED MATURITY DATE:    March 26, 2014
 
 
INTEREST PAYMENT DATES:  26th day of each month commencing April 26, 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: March 26, 2003
 
 
OTHER PROVISIONS:        The Notes are subject to redemption at the option ML&Co., in whole, semi-
                         annually on each March 26 and September 26 commencing March 26, 2003, 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:                   March 8, 1999
 
 
</TABLE>