FILE NO. 333-59997
                                                                  RULE 424(B)(3)
 
 
 
<TABLE>
<CAPTION>
 
<S>                                                              <C>
PROSPECTUS SUPPLEMENT NO. 1816                                    MARKET-MAKING TRANSACTIONS
TO (A) FOR THE MEDIUM TERM NOTES (NO SERIES DESIGNATED) THE
PROSPECTUS DATED FEBRUARY 11, 1998, AND (B) FOR THE MEDIUM TERM
NOTES (SERIES B) PROSPECTUS AND PROSPECTUS SUPPLEMENT
DATED JULY 30, 1998.
 
 
</TABLE>
 
 
 
                           MERRILL LYNCH & CO., INC.
                    MEDIUM-TERM NOTES (NO SERIES DESIGNATED)
                          MEDIUM-TERM NOTES (SERIES B)
 
     This Prospectus is used by Merrill Lynch, Pierce, Fenner & Smith
Incorporated ("MLPF&S"), a wholly owned subsidiary of Merrill Lynch & Co., Inc.
("ML&Co."), in connection with offers and sales related to market-making
transactions in the Medium-Term Notes (no series designated) and Medium-Term
Notes (Series B) of ML & Co., Inc. in which transactions MLPF&S acts as a
principal. Such sales will be made at prices related to prevailing market prices
at the time of sale.
     As of December 25, 1998, Medium-Term Notes (no series designated) and
Medium-Term Notes (Series B) of the Company have been issued and are currently
outstanding as follows:
 
<TABLE>
<CAPTION>
 
<S>                                        <C>
 
    From 9 Months but less than 12 Months            5.97%
 
 
    From 12 Months but less than 18 Months      5.09% to 5.96%
 
 
    From 18 Months but less than 2 Years              N/A
 
 
    From 2 Years but less than 3 Years          5.72% to 6.77%
 
 
    From 3 Years but less than 4 Years          5.77% to 6.62%
 
 
    From 4 Years but less than 5 Years          5.75% to 6.46%
 
 
    From 5 Years but less than 6 Years          6.06% to 7.30%
 
 
    From 6 Years but less than 7 Years               6.18%
 
 
    From 7 Years but less than 10 Years               N/A
 
 
    10 Years or more                            6.05% to 8.13%
 
 
</TABLE>
 
 
     MLPF&S may also act as an agent for its customers in connection with other
secondary market transactions in the Medium-Term Notes (no series designated)
and Medium-Term Notes (Series B).
 
*   This reflects actual interest rates for fixed rate Medium-Term Notes (no
   series designated) and Medium-Term Notes (Series B). The Company also has
   outstanding a variety of floating rate Medium-Term Notes (no series
   designated) and Medium-Term Notes (Series B), the interest rates of which are
   reset periodically depending on various indices. In addition, the Company has
   outstanding Medium-Term Notes (Series B) the return on which is correlated to
   changes in the market price of various equity securities or the level of
   various published indices, or baskets thereof, as the case may be.
 
 
Dated January 8, 1999