Exhibit 1(j)

                     Merrill Lynch Municipal Bond fund, Inc.

                             Articles Supplementary

      Merrill  Lynch  Municipal  Bond Fund,  Inc., a Maryland  corporation  (the
"Corporation"),  hereby  certifies to the State  Department of  Assessments  and
Taxation as follows:

First:  The  Corporation  is an open-end  company  registered  as such under the
Investment Company Act of 1940 with authority to issue capital stock as follows:

                                                                 Number of
         Series                                              Authorized Shares
         ------                                              -----------------
Insured Portfolio Series Common Stock
         Class A                                                375,000,000
         Class B                                                375,000,000

High Yield Portfolio Series Common Stock
         Class A                                                375,000,000
         Class B                                                375,000,000

Limited Maturity Portfolio Series Common Stock                  300,000,000

Second: The board of Directors of the Corporation,  acting pursuant to authority
contained in the Corporation's Charter,  hereby classifies 150,000,000 shares of
the unissued shares of Limited Maturity  Portfolio Series Common Stock as "Class
B Limited  Maturity  Portfolio Series Common Stock" which shall have the powers,
preferences,  and  voting  or  other  special  rights,  and the  qualifications,
restrictions and limitations set forth in the Corporation's Charter, as amended,
and as required by the Investment Company Act of 1940.

Third: To avoid confusion,  all other shares of the Limited  Maturity  Portfolio
Series Common Stock other than those  described in Article Second hereof,  shall
be referred to as "Class A Limited Maturity Portfolio Series Common Stock." This
is intended for purposes of  identification  and effects no substantive  change,
and shall  apply  both to issued  and  unissued  shares of said  Class A Limited
Maturity Portfolio Series Common Stock.

Fourth:  No other change is intended or effected.



      In  Witness   Whereof,   the   Corporation   has  caused  these   Articles
Supplementary to be executed in its name and on its behalf by its Vice President
and attested by its Secretary as of the 21st day of June, 1991.

                                              MERRILL LYNCH MUNICIPAL BOND
                                              FUND, INC.


                                              By: /s/ Vincent Giordano
                                                  ----------------------------
                                                  Vincent Giordano
                                                  Vice President
ATTEST:


/s/ Mark B. Goldfus
---------------------------------
Mark B. Goldfus
Secretary

      The  undersigned,  Vice  President of Merrill Lynch  Municipal  Bond Fund,
Inc.,  who  executed  on  behalf  of said  Corporation  the  foregoing  Articles
Supplementary, of which this certificate is made a part, hereby acknowledges, in
the name and on behalf of said Corporation, the foregoing Articles Supplementary
to be the corporate act of said  Corporation and further  certifies that, to the
best of his knowledge,  information and belief,  the matters and facts set forth
therein with respect to the approval thereof are true in all material  respects,
under the penalties of perjury.


                                              By: /s/ Vincent Giordano
                                                  ----------------------------
                                                  Vincent Giordano
                                                  Vice President


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