MERRILL LYNCH ARIZONA MUNICIPAL BD FD OF MLMSMST
N-30D, 1994-03-17
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MERRILL
LYNCH
ARIZONA
MUNICIPAL
BOND FUND

Semi-Annual Report  January 31, 1994


This report is not authorized for use as an offer of sale
or a solicitation of an offer to buy shares of the Fund unless
accompanied or preceded by the Fund's current prospectus. Past
performance results shown in this report should not be considered
a representation of future performance. Investment return and
principal value of shares will fluctuate so that shares, when
redeemed, may be worth more or less than their original cost.

Merrill Lynch Arizona
Municipal Bond Fund
Merrill Lynch Multi-State
Municipal Series Trust
Box 9011
Princeton, New Jersey
08543-9011  

TO OUR SHAREHOLDERS

As 1993 drew to a close, the US economy showed signs of strong
improvement. The initial estimate for gross domestic product
(GDP) growth in the final quarter of 1993 was +5.9% in real
terms, the strongest quarterly performance since the fourth
quarter of 1987. GDP growth was led by interest rate-sensitive
sectors, such as housing, durable goods orders and business
investment in capital equipment. Consumer confidence also
improved after remaining lackluster throughout most of 1993.
While the exceptionally robust rate of growth may not be
sustainable in the first quarter of 1994 (especially considering
the harsh winter weather experienced by virtually half of the
country in January), this strong showing suggests that the US
economy may at last be gaining momentum. This was supported by
the December increase in the Index of Leading Economic
Indicators, the fifth monthly rise in this indicator of future
economic activity.
<PAGE>
At the same time, the rate of inflation remains in check.
Nevertheless, concerns arose late in 1993 that the rate of
business activity might increase inflationary pressures, which
were reflected in an upturn of longer-term interest rates. In
January, Federal Reserve Board Chairman Alan Greenspan indicated
in Congressional testimony that continued strong expansion of
economic activity would lead the central bank to tighten monetary
policy in an effort to contain inflation. On February 4, 1994,
the central bank broke with tradition and publicly announced an
increase in short-term interest rates. In the weeks ahead,
investors will continue to gauge the pace of the economic
expansion and watch for signs of an overheating economy that
could prompt successive Federal Reserve Board actions to raise
short-term interest rates.

The Municipal Market
Yields on tax-exempt securities generally declined over the three
months ended January 31, 1994. Long-term revenue bond yields, as
measured by the Bond Buyer Revenue Bond Index, declined an
additional six basis points (0.06%) to end the quarter at 5.50%.
US Treasury bond yields, however, rose approximately 25 basis
points to end the period at approximately 6.20%. This
outperformance by municipal securities is likely to be the
dominant theme for much of 1994.

During the January quarter, taxable yields remained volatile in
reaction to the inherent conflicts between the extremely strong
economic recovery seen during the last quarter of 1993 and
continued low inflationary pressures. Tax-exempt bond yields,
however, reflected very positive technical factors. During the 12
months ended January 31, 1994, municipalities issued more than
$288 billion in securities, an increase of more than 21% versus
one year ago. As we have discussed in earlier reports to
shareholders, much of this increase has been the result of
municipalities refinancing existing higher-couponed debt. At
current yield levels, few of these issues remain to be refunded.
This has led to estimates of municipal bond issuance declining to
approximately $175 billion for all of 1994. More than $290
billion in long-term tax-exempt securities was issued in 1993.

In addition to this dramatic decline in issuance, investor demand
is expected to increase in the coming year. Greater demand should
be generated by a number of factors, with the recent increases in
marginal Federal income tax rates the most important. Also, bond
calls and early redemption are expected to increase significantly
in the coming quarters and last into early 1995, at least. The
combination of declining new-issue volume and increasing numbers
of bonds redeemed prior to their stated maturities will eventually 
lead to a net decline in the number of bonds outstanding. In such 
a scenario, investor demand rises as bondholders are forced to 
continually purchase new municipal bonds to replace their previous 
holdings.
<PAGE>
The outlook for the municipal bond market is very favorable.
While the historic declines in yields seen over the last year are
unlikely to be repeated, the strong technical framework within
the tax-exempt market would support further modest declines in
tax-exempt yields. At the very least, should interest rates rise
in response to continued strong economic growth and a resurgence
in inflationary pressures, we believe that municipal bond price
deterioration will be minimal in comparison to taxable investment
alternatives.

Portfolio Strategy
Merrill Lynch Arizona Municipal Bond Fund has experienced few
structural changes over the past quarter. In anticipation of some
interest rate volatility resulting from changing national
economic conditions, we have maintained a cash equivalent reserve
position of approximately 7%. This provided the Fund with the
liquidity to take advantage of the recent new-issue market where
a price concession could be achieved versus the more expensive
secondary market.

With credit yields at historically narrow spreads, credit quality
remains a priority. Currently, 57.5% of the Fund's total assets
are rated AA or Aa or better by Moody's Investors Service, Inc.
or Standard & Poor's Corporation, respectively. It is our
intention to use any significant pullbacks in bond prices to
purchase additional performance-oriented positions since the
technical supply/demand relationship should favor better
municipal bond prices later in the year.

We appreciate your ongoing interest in Merrill Lynch Arizona
Municipal Bond Fund, and we look forward to serving your
investment needs and objectives in the months and years to come.

Sincerely,

(Arthur Zeikel)
Arthur Zeikel
President

(Vincent R. Giordano)
Vincent R. Giordano
Vice President and Portfolio Manager

March 3, 1994
<PAGE>

OFFICERS AND TRUSTEES

Arthur Zeikel, President and Trustee
Kenneth S. Axelson, Trustee
Herbert I. London, Trustee
Robert R. Martin, Trustee
Joseph L. May, Trustee
Andre F. Perold, Trustee
Terry K. Glenn, Executive Vice President
Donald C. Burke, Vice President
Vincent R. Giordano, Vice President
Kenneth A. Jacob, Vice President
Gerald M. Richard, Treasurer
Jerry Weiss, Secretary

Custodian
National Westminster Bank NJ
10 Exchange Place
Jersey City, New Jersey 07302

Transfer Agent
Financial Data Services, Inc.
4800 Deer Lake Drive East
Jacksonville, Florida 32246-6484
(800) 637-3863


PERFORMANCE DATA

None of the past results shown should be considered a
representation of future performance. Investment return and
principal value of Class A and Class B Shares will fluctuate 
so that shares, when redeemed, may be worth more or less than 
their original cost.

<TABLE>
Performance Summary--Class A Shares
<CAPTION>
                                     Net Asset Value             Capital Gains
Period Covered                 Beginning          Ending          Distributed          Dividends Paid*          % Change**
<C>                            <C>                <C>               <C>                    <C>                    <C> 
11/29/91--12/31/91             $10.00             $10.24              --                   $0.052                + 2.92%
1992                            10.24              10.49              --                    0.741                +10.02
1993                            10.49              11.07            $0.065                  0.739                +13.48
1/1/94--1/31/94                 11.07              11.18              --                    0.034                + 1.39
                                                                    ------                 ------       
                                                              Total $0.065           Total $1.566

                                                                          Cumulative total return as of 1/31/94: +30.27%**

<FN>                      
*Figures may include short-term capital gains distributions.
**Figures assume reinvestment of all dividends and capital 
gains distributions at net asset value on the payable date, 
and do not include sales charge; results would be lower if 
sales charge was included.
</TABLE>
<PAGE>
<TABLE>
Performance Summary--Class B Shares
<CAPTION>
                                     Net Asset Value             Capital Gains
Period Covered                 Beginning          Ending          Distributed          Dividends Paid*          % Change**
<C>                            <C>                <C>               <C>                    <C>                    <C> 
11/29/91--12/31/91             $10.00             $10.24              --                   $0.047                 + 2.87%
1992                            10.24              10.49              --                    0.688                 + 9.46
1993                            10.49              11.07            $0.065                  0.684                 +12.91
1/1/94--1/31/94                 11.07              11.18              --                    0.030                 + 1.36
                                                                    ------                 ------
                                                              Total $0.065           Total $1.449

                                                                           Cumulative total return as of 1/31/94: +28.86%**
<FN>                     
*Figures may include short-term capital gains distributions.
**Figures assume reinvestment of all dividends and capital 
gains distributions at net asset value on the payable date, 
and do not reflect deduction of any sales charge; results 
would be lower if sales charge was deducted.
</TABLE>

Average Annual Total Return
                              % Return Without     % Return With
Class A Shares*                 Sales Charge       Sales Charge**

Year Ended 12/31/93                 +13.48%             + 8.94%
Inception (11/29/91)
through 12/31/93                    +12.74              +10.56
[FN]                     
*Maximum sales charge is 4%.
**Assuming maximum sales charge.


                                  % Return             % Return
Class B Shares*                  Without CDSC         With CDSC**

Year Ended 12/31/93                 +12.91%             + 8.91%
Inception (11/29/91)
through 12/31/93                    +12.17              +11.32
[FN]                      
*Maximum contingent deferred sales charge is 4% and is reduced
to 0% after 4 years.
**Assuming payment of applicable contingent deferred sales charge.
<PAGE>

PERFORMANCE DATA (concluded)

<TABLE>
Recent Performance Results*
<CAPTION>
                                                                                       12 Month       3 Month
                                            1/31/94       10/31/93       1/31/93       % Change       % Change
<S>                                         <C>            <C>           <C>           <C>            <C>  
Class A Shares                              $11.18         $11.28        $10.56        + 6.49%(1)     -0.31%(1)
Class B Shares                               11.18          11.28         10.56        + 6.49(1)      -0.31(1)
Class A Shares--Total Return                                                           +13.80(2)      +2.42(3)
Class B Shares--Total Return                                                           +13.23(4)      +2.29(5)
Class A Shares--Standardized 30-day Yield     4.21%
Class B Shares--Standardized 30-day Yield     3.89%

(FN)
*Investment results shown for the 3-month and 12-month periods are before the deduction of any sales charges.
(1)Percent change includes reinvestment of $0.065 per share capital gains distributions.
(2)Percent change includes reinvestment of $0.738 per share ordinary income dividends and $0.065 per share
capital gains distributions.
(3)Percent change includes reinvestment of $0.303 per share ordinary income dividends and $0.065 per share 
capital gains distributions.
(4)Percent change includes reinvestment of $0.682 per share ordinary income dividends and $0.065 per share 
capital gains distributions.
(5)Percent change includes reinvestment of $0.288 per share ordinary income dividends and $0.065 per share 
capital gains distributions.
</TABLE>

PORTFOLIO ABBREVIATIONS

To simplify the listings of Merrill Lynch Arizona
Municipal Bond Fund's portfolio holdings in the Schedule
of Investments, we have abbreviated the names of many of
the securities according to the list at right.

AMT          Alternative Minimum Tax (subject to)
COP          Certificates of Participation
GO           General Obligation Bonds
IDA          Industrial Development Authority
PCR          Pollution Control Revenue Bonds
RIB          Residual Income Bonds
STRIPES      Short-Term Rate Inverse Payment Exempt Securities
UT           Unlimited Tax
VRDN         Variable Rate Demand Notes
YCN          Yield Curve Notes
<PAGE>

<TABLE>
SCHEDULE OF INVESTMENTS                                                                                              (in Thousands)
<CAPTION>
S&P          Moody's     Face                                                                                                Value
Ratings      Ratings    Amount                                            Issue                                           (Note 1a)
Arizona--89.1%
<S>          <S>        <C>       <S>                                                                                      <C>
                                  Apache County, Arizona, Public Finance Corporation, COP:
A            A          $1,425      5.50% due 5/01/2007                                                                    $  1,447
A            A             500      5.50% due 5/01/2010                                                                         500

                                  Arizona Educational Loan Marketing Corporation, Educational Loan Revenue
                                  Bonds, AMT, Series B:
NR           A           2,000      7% due 3/01/2002                                                                          2,272
NR           A           1,600      7% due 3/01/2003                                                                          1,836
NR           A           1,100      7% due 3/01/2005                                                                          1,244

NR           A             750    Arizona Educational Loan Marketing Corporation, Educational Loan Revenue
                                  Bonds, AMT, Sub-Series, 6.625% due 9/01/2005                                                  836

AAA          Aaa         1,750    Arizona Health Facilities Authority, Hospital Systems Revenue Bonds
                                  (Samaritan Health Services), 6.25% due 12/01/2006 (d)                                       1,927

NR           Ba          2,415    Arizona Health Facilities Authority, Hospital Systems Revenue Refunding
                                  Bonds (Saint Luke's Health Systems), 7.25% due 11/01/2014                                   2,582

AAA          Aaa           245    Arizona Health Facilities Authority Revenue Bonds (Yavapai Community Hospital),
                                  Series B, 7.25% due 10/01/2013 (b)                                                            282

A+           A             850    Arizona State University, COP (Towers Project), 7.05% due 7/01/2010                           958

AA           A1          2,750    Arizona State University, Revenue Refunding Bonds, Series A, 5.50% due 7/01/2019            2,844

AA           Aa          1,000    Arizona Transportation Board, Highway Revenue Bonds, Sub-Series B,
                                  6.50% due 7/01/2011 (e)                                                                     1,161

AA+          Aa          2,000    Arizona Wastewater Management Authority, Wastewater Treatment Financial Assistance
                                  Revenue Bonds, 6.80% due 7/01/2011                                                          2,301

AAA          Aaa           700    Avondale, Arizona, Municipal Development Corporation, Municipal Facilities
                                  Revenue Bonds, 6.625% due 7/01/2011 (d)                                                       784

AA-          A1          1,945    Central Arizona Water Conservation District, Contract Revenue Bonds
                                  (Central Arizona Project), Series B, 6.50% due 11/01/2011                                   2,174

AAA          NR          2,100    Coconino County, Arizona, IDA (Individual Development Revenue Citizens Utilities
                                  Company Project), AMT, 5.80% due 11/15/2028                                                 2,182
<PAGE>
                                  Coconino and Yavapai Counties, Arizona, Joint Unified School District No. 9 
                                  Revenue Bonds (Sedona Oak Creek), Series A, UT:
A-           Baa1          200      6.70% due 7/01/2006                                                                         220
A-           Baa1          250      6.75% due 7/01/2007                                                                         275

AAA          Aaa         3,520    Gilbert, Arizona, Water & Sewer Revenue Refunding Bonds, 6.50% due 7/01/2022 (b)            4,000

A            A3          4,000    Greenlee County, Arizona, IDA, PCR, Refunding (Phelps Dodge Corporation Project),
                                  5.45% due 6/01/2009                                                                         4,075

AAA          Aaa         2,000    Maricopa County, Arizona, IDA, Health Facilities Revenue Bonds (Saint Joseph's
                                  Care Center Project), Series A, 7.75% due 7/01/2020 (d)                                     2,390

A1+          VMIG1       1,700    Maricopa County, Arizona, IDA, Hospital Facility Revenue Bonds (Samaritan Health 
                                  Service Hospital), VRDN, 2% due 12/01/2008 (d)(f)                                           1,700

                                  Maricopa County, Arizona, IDA, Hospital Facilities Revenue Refunding Bonds:
AAA          Aaa         2,800      (John C. Lincoln Hospital), 7.50% due 12/01/2013 (c)                                      3,333 
AAA          Aaa           750      (Samaritan Health Services), Series A, 7% due 12/01/2013 (d)                                871

BB           Ba2         1,000    Maricopa County, Arizona, Pollution Control Corporation, PCR, Refunding (Public 
                                  Service Company--Palo Verde), 6.375% due 8/15/2023                                          1,026
</TABLE>

<TABLE>
SCHEDULE OF INVESTMENTS (continued)                                                                                  (in Thousands)
<CAPTION>
S&P          Moody's     Face                                                                                                Value
Ratings      Ratings    Amount                                            Issue                                           (Note 1a)
Arizona (continued)
<S>          <S>        <C>       <S>                                                                                      <C>
AA           A1         $1,900    Maricopa County, Arizona, School District No. 3 (Tempe Elementary Projects of 1991),
                                  Series C, UT, 6% due 7/01/2011                                                           $  2,074

AAA          Aaa           500    Maricopa County, Arizona, Unified School District No. 11-Peoria, Revenue 
                                  Refunding Bonds, 6.40% due 7/01/2010 (d)                                                      555

AAA          Aaa         2,000    Mesa, Arizona, IDA, Health Care Facilities Revenue Bonds (Western Health Network),    
                                  Series A-1, 7.625% due 1/01/2019 (a)                                                        2,316

AAA          Aaa         2,325    Mohave County, Arizona, Unified High School District No. 30-Mohave Revenue Bonds,    
                                  Series B, UT, 6.70% due 7/01/2011 (b)(e)                                                    2,725

                                  Navajo County, Arizona, Pollution Control Corporation, Revenue Refunding Bonds 
                                  (Arizona Public Service Corporation), Series A:
AAA          Aaa         1,000      5.50% due 8/15/2028 (h)                                                                   1,026
BBB          Baa2        5,000      5.875% due 8/15/2028                                                                      5,044

                                  Peoria, Arizona, Improvement District, Special Assessment Bonds:
BBB          NR            430      7.20% due 1/01/2010                                                                         478
BBB          NR            510      7.20% due 1/01/2013                                                                         562
<PAGE>
                                  Peoria, Arizona, Improvement District, Special Assessment Bonds (North Valley
                                  Power Center No. 8801):
BBB          NR            200      7.30% due 1/01/2009                                                                         228
BBB          NR            395      7.30% due 1/01/2011                                                                         448

AAA          Aaa         1,000    Peoria, Arizona, Municipal Development Authority, Municipal Facilities Revenue
                                  Refunding Bonds, 5.20% due 7/01/2013 (d)                                                    1,008

                                  Peoria, Arizona, Municipal Development Authority, Municipal Facilities Utility
                                  Revenue Bonds (e):
BBB+         NR            150      7.05% due 7/01/2002                                                                         176
BBB+         NR            155      7.10% due 7/01/2003                                                                         182

AAA          Aaa         1,000    Peoria, Arizona, Water and Sewer Revenue Refunding Bonds, 6.625% due 7/01/2006 (b)          1,122

AA+          Aa          2,000    Phoenix, Arizona, Civic Improvement Corporation, Excise Tax Revenue Bonds 
                                  (Senior Lien--New City Hall Project), 5.10% due 7/01/2018                                   1,975

A            A1          4,000    Phoenix, Arizona, Civic Improvement Corporation, Wastewater Systems Lease, Revenue
                                  Refunding Bonds, 4.75% due 7/01/2023                                                        3,663

AA+          Aa          1,860    Phoenix, Arizona, GO, Refunding, AMT, UT, 6.375% due 7/01/2013                              2,078

A1+          VMIG1       1,200    Phoenix, Arizona, Revenue Bonds, Series 1, AMT, VRDN, 2.30% due 6/01/2016 (f)               1,200

AA           NR          2,000    Phoenix, Arizona, Street and Highway User Revenue Bonds, Senior Lien,
                                  6.25% due 7/01/2011                                                                         2,355

AAA          Aaa         1,750    Pima County, Arizona, Sewer Revenue Refunding Bonds, 6.75% due 7/01/2015 (b)                1,986

AAA          Aaa         1,065    Pima County, Arizona, Unified School District No. 1-Tucson Revenue Bonds, Series D,
                                  UT, 5.90% due 7/01/2005 (b)                                                                 1,174

AA           P1          3,000    Pinal County, Arizona, IDA, PCR (Magna-Copper-Newmont Mining Corporation), VRDN,
                                  2.05% due 12/01/2009 (f)                                                                    3,000

BBB-         NR            750    Prescott Valley, Arizona, Improvement District, Special Assessment Sewer Collection
                                  System, Roadway Repair Revenue Bonds, 7.90% due 1/01/2012                                     860
</TABLE>
<PAGE>
<TABLE>
SCHEDULE OF INVESTMENTS (concluded)                                                                                  (in Thousands)
<CAPTION>
S&P          Moody's     Face                                                                                                Value
Ratings      Ratings    Amount                                            Issue                                           (Note 1a)
Arizona (concluded))
<S>          <S>        <C>       <S>                                                                                      <C>
                                  Salt River Project, Arizona, Agricultural Improvement and Power District, Electric
                                  System Revenue Bonds, Series A:
AA           Aa         $2,000      6.50% due 1/01/2022                                                                    $  2,201
AA           Aaa         2,000      7.30% due 1/01/2030 (e)                                                                   2,377

AA           Aa          2,000    Salt River Project, Arizona, Agricultural Improvement and Power District, 
                                  Electric System Revenue Bonds, STRIPES, 6.97% due 1/01/2011 (g)                             1,998

BBB          NR          1,600    Sedona, Arizona, Sewer Revenue Refunding Bonds, 7% due 7/01/2012                            1,819

AAA          Aaa           500    Tucson, Arizona, Airport Authority Revenue Bonds, AMT, Series B, 7.25% 
                                  due 6/01/2020 (d)                                                                             577

AAA          Aaa         1,900    Tucson, Arizona, Refunding Bonds, 5.40%* due 7/01/2013 (b)                                    665

A+           NR          2,650    Tucson, Arizona, Water Revenue Bonds, Series D, 6.75% due 7/01/2019 (e)                     3,125

                                  Tucson, Arizona, Water Revenue Refunding Bonds:
A+           A1          1,250      6.50% due 7/01/2016                                                                       1,391
A+           A1          1,400      Series A, 5.75% due 7/01/2018                                                             1,468

AAA          Aaa           750    University of Arizona, Medical Center Corporation, Hospital Revenue Bonds,
                                  7% due 7/01/2001 (d)(e)                                                                       896

                                  University of Arizona Revenue Bonds (e):
AA           NR            500      Series A, 7% due 6/01/2015                                                                  588
AA           NR          1,920      Series B, 6.90% due 6/01/2016                                                             2,249

Puerto Rico--9.9%
BBB          Baa         3,305    Puerto Rico Commonwealth Aqueduct and Sewer Authority Revenue Bonds,    
                                  Series A, 7% due 7/01/2019                                                                  3,666

A            Baa1        2,000    Puerto Rico Commonwealth Highway and Transportation Authority, Highway 
                                  Revenue Refunding Bonds, Series V, 5.75% due 7/01/2018                                      2,050

AAA          Aaa         2,000    Puerto Rico Commonwealth YCN, 9.132% due 7/01/2020 (c)(g)                                   2,292

AAA          Aaa         1,900    Puerto Rico Electric Power Authority, Power Revenue Bonds, RIB, 9.428%    
                                  due 7/01/2023 (c)(g)                                                                        2,204

A-           Baa1          720    Puerto Rico Electric Power Authority, Power Revenue Bonds,       
                                  Series N, 7.125% due 7/01/2014                                                                817
<PAGE>
Total Investments (Cost--$101,322)--99.0%                                                                                   109,838

Other Assets Less Liabilities--1.0%                                                                                           1,069
                                                                                                                           --------
Net Assets--100.0%                                                                                                         $110,907
                                                                                                                           ========
<FN>
*Represents approximate yield to maturity.
(a)BIG Insured.
(b)FGIC Insured.
(c)FSA Insured.
(d)MBIA Insured.
(e)Prerefunded.
(f)The interest rate is subject to change periodically based
on prevailing market rates. The interest rates shown are those
in effect at January 31, 1994.
(g)The interest rate is subject to change periodically and inversely
to the prevailing market rate. The interest rate shown is the
rate in effect at January 31, 1994.
(h)AMBAC Insured.

See Notes to Financial Statements.
</TABLE>

FINANCIAL INFORMATION
<TABLE>
<CAPTION>
Statement of Assets and Liabilities as of January 31, 1994
<S>                        <S>                                                                    <C>              <C>
Assets:                    Investments, at value (identified cost--$101,321,702) (Note 1a)                         $109,838,191
                           Cash                                                                                          73,404
                           Receivables:
                             Securities sold                                                      $  1,957,392
                             Interest                                                                  978,079
                             Beneficial interest sold                                                  455,817        3,391,288
                                                                                                  ------------
                           Deferred organization expenses (Note 1e)                                                      49,666
                           Prepaid expenses and other assets (Note 1e)                                                   22,055
                                                                                                                   ------------
                           Total assets                                                                             113,374,604
                                                                                                                   ------------
Liabilities:               Payables:
                             Securities purchased                                                    1,919,411
                             Beneficial interest redeemed                                              314,552
                             Dividends to shareholders (Note 1f)                                       100,102
                             Distributor (Note 2)                                                       34,632
                             Investment adviser (Note 2)                                                25,852        2,394,549
                                                                                                  ------------    
                           Accrued expenses and other liabilities                                                        73,510
                                                                                                                   ------------
                           Total liabilities                                                                          2,468,059
                                                                                                                   ------------
Net Assets:                Net assets                                                                              $110,906,545
                                                                                                                   ============
<PAGE>
Net Assets                 Class A Shares of beneficial interest, $.10 par value, 
Consist of:                unlimited number of shares authorized                                                   $    198,966
                           Class B Shares of beneficial interest, $.10 par value, 
                           unlimited number of shares authorized                                                        793,198
                           Paid-in capital in excess of par                                                         101,069,552
                           Undistributed realized capital gains--net                                                    328,340
                           Unrealized appreciation on investments--net                                                8,516,489
                                                                                                                   ------------
                           Net assets                                                                              $110,906,545
                                                                                                                   ============

Net Asset Value:           Class A--Based on net assets of $22,241,174 and 
                           1,989,662 shares of beneficial interest outstanding                                     $      11.18
                                                                                                                   ============
                           Class B--Based on net assets of $88,665,371 and 
                           7,931,979 shares of beneficial interest outstanding                                     $      11.18
                                                                                                                   ============

                           See Notes to Financial Statements.
</TABLE>


FINANCIAL INFORMATION (continued)
<TABLE>
Statement of Operations
<CAPTION>
                                                                                                                        For the
                                                                                                               Six Months Ended
                                                                                                               January 31, 1994
<S>                        <S>                                                                                     <C>
Investment Income          Interest and amortization of premium and discount earned                                $  2,972,511
(Note 1d):

Expenses:                  Investment advisory fees (Note 2)                                                            288,571
                           Distribution fees--Class B (Note 2)                                                          213,432
                           Professional fees                                                                             28,989
                           Printing and shareholder reports                                                              25,366
                           Accounting services (Note 2)                                                                  23,420
                           Transfer agent fees--Class B (Note 2)                                                         17,197
                           Custodian fees                                                                                 8,230
                           Amortization of organization expenses (Note 1e)                                                7,445
                           Registration fees (Note 1e)                                                                    6,489
                           Pricing fees                                                                                   4,508
                           Transfer agent fees--Class A (Note 2)                                                          3,393
                           Trustees' fees and expenses                                                                    2,346
                           Other                                                                                          1,928
                                                                                                                   ------------
                           Total expenses before reimbursement                                                          631,314
                           Reimbursement of expenses (Note 2)                                                          (132,119)
                                                                                                                   ------------
<PAGE>                     Total expenses after reimbursement                                                           499,195
                                                                                                                   ------------
                           Investment income--net                                                                     2,473,316
                                                                                                                   ------------
Realized &                 Realized gain on investments--net                                                          1,300,236
Unrealized                 Change in unrealized appreciation on investments--net                                      2,333,230
Gain on                                                                                                            ------------
Investments--Net           Net Increase in Net Assets Resulting from Operations                                    $  6,106,782
(Notes 1d & 3):                                                                                                    ============


                           See Notes to Financial Statements.
</TABLE>

FINANCIAL INFORMATION (continued)

<TABLE>
Statements of Changes in Net Assets
<CAPTION>
                                                                                                        For the       For the
                                                                                                       Six Months       Year
                                                                                                         Ended         Ended
                                                                                                       January 31,    July 31,
Increase (Decrease) in Net Assets:                                                                        1994          1993
<S>                        <S>                                                                       <C>           <C>  
Operations:                Investment income--net                                                    $  2,473,316  $  4,423,726
                           Realized gain on investments--net                                            1,300,236     1,488,701
                           Change in unrealized appreciation on investments--net                        2,333,230     2,011,436
                                                                                                     ------------  ------------
                           Net increase in net assets resulting from operations                         6,106,782     7,923,863
                                                                                                     ------------  ------------
Dividends &                Investment income--net:
Distributions to             Class A                                                                     (501,271)     (901,362)
Shareholders                 Class B                                                                   (1,972,045)   (3,522,364)
(Note 1f):                 Realized gain on investments--net:
                             Class A                                                                     (387,547)     (182,088)
                             Class B                                                                   (1,714,015)     (744,535)
                                                                                                     ------------  ------------
                           Net decrease in net assets resulting from dividends and distributions
                           to shareholders                                                             (4,574,878)   (5,350,349)
                                                                                                     ------------  ------------
Beneficial Interest        Net increase in net assets derived from beneficial
Transactions               interest transactions                                                       10,308,701    22,046,923
(Note 4):                                                                                            ------------  ------------

Net Assets:                Total increase in net assets                                                11,840,605    24,620,437
                           Beginning of period                                                         99,065,940    74,445,503
                                                                                                     ------------  ------------
                           End of period                                                             $110,906,545  $ 99,065,940
                                                                                                     ============  ============

                           See Notes to Financial Statements.
</TABLE>
<PAGE>

FINANCIAL INFORMATION (continued)
<TABLE>
Financial Highlights
<CAPTION>
                                                                                                          Class A
                                                                                                                       For the
                                                                                           For the        For the      Period
The following per share data and ratios have been derived                                 Six Months        Year       Nov. 29,
from information provided in the financial statements.                                      Ended          Ended      1991++ to
                                                                                          January 31,     July 31,     July 31,
Increase (Decrease) in Net Asset Value:                                                      1994           1993         1992
<S>                        <S>                                                              <C>           <C>          <C>
Per Share                  Net asset value, beginning of period                             $  11.01      $  10.74     $  10.00
Operating                                                                                   --------      --------     --------
Performance:                 Investment income--net                                              .29           .60          .41
                             Realized and unrealized gain on investments--net                    .39           .39          .74
                                                                                            --------      --------     --------
                           Total from investment operations                                      .68           .99         1.15
                                                                                            --------      --------     --------
                           Less dividends and distributions:
                             Investment income--net                                             (.29)         (.60)        (.41)
                             Realized gain on investments--net                                  (.22)         (.12)          --
                                                                                            --------      --------     --------
                           Total dividends and distributions                                    (.51)         (.72)        (.41)
                                                                                            --------      --------     --------
                           Net asset value, end of period                                   $  11.18      $  11.01     $  10.74
                                                                                            ========      ========     ========

Total Investment           Based on net asset value per share                                  6.27%+++      9.63%       11.82%+++
Return:**                                                                                   ========      ========     ========

Ratios to                  Expenses, net of reimbursement                                       .54%*         .41%         .22%*
Average                                                                                     ========      ========     ========
Net Assets:                Expenses                                                             .79%*         .81%         .98%*
                                                                                            ========      ========     ========
                           Investment income--net                                              5.12%*        5.57%        5.99%*
                                                                                            ========      ========     ========

Supplemental               Net assets, end of period (in thousands)                         $ 22,241      $ 17,988      $14,564
Data:                                                                                       ========      ========     ========
                           Portfolio turnover                                                 33.26%        73.48%       66.50%
                                                                                            ========      ========     ========
                       <FN>
                         ++Commencement of Operations.
                        +++Aggregate total investment return.
                          *Annualized.
                         **Total investment returns exclude the effects of sales loads.

                           See Notes to Financial Statements.
</TABLE>
<PAGE>
FINANCIAL INFORMATION (concluded)
<TABLE>
Financial Highlights (concluded)
<CAPTION>
                                                                                                          Class B
                                                                                                                       For the
                                                                                           For the        For the      Period
The following per share data and ratios have been derived                                 Six Months        Year       Nov. 29,
from information provided in the financial statements.                                      Ended          Ended      1991++ to
                                                                                          January 31,     July 31,     July 31,
Increase (Decrease) in Net Asset Value:                                                      1994           1993         1992
<S>                        <S>                                                              <C>           <C>          <C>
Per Share                  Net asset value, beginning of period                             $  11.01      $  10.74     $  10.00
Operating                                                                                   --------      --------     --------
Performance:                 Investment income--net                                              .26           .54          .38
                             Realized and unrealized gain on investments--net                    .39           .39          .74
                                                                                            --------      --------     --------
                           Total from investment operations                                      .65           .93         1.12
                                                                                            --------      --------     --------
                           Less dividends and distributions:
                             Investment income--net                                             (.26)         (.54)        (.38)
                             Realized gain on investments--net                                  (.22)         (.12)          --
                                                                                            --------      --------     --------
                           Total dividends and distributions                                    (.48)         (.66)        (.38)
                                                                                            --------      --------     --------
                           Net asset value, end of period                                   $  11.18      $  11.01     $  10.74
                                                                                            ========      ========     ========

Total Investment           Based on net asset value per share                                  6.00%+++      9.08%       11.45%+++
Return:**                                                                                   ========      ========     ========

Ratios to                  Expenses, excluding distribution fees and net of 
Average                    reimbursement                                                        .55%*         .42%         .24%*
Net Assets:                                                                                 ========      ========     ========
                           Expenses, net of reimbursement                                      1.05%*         .92%         .74%*
                                                                                            ========      ========     ========
                           Expenses                                                            1.30%*        1.32%        1.47%*
                                                                                            ========      ========     ========
                           Investment income--net                                              4.62%*        5.06%        5.48%*
                                                                                            ========      ========     ========

Supplemental               Net assets, end of period (in thousands).                        $ 88,665      $ 81,078     $ 59,881
Data:                                                                                       ========      ========     ========
                           Portfolio turnover                                                 33.26%        73.48%       66.50%
                                                                                            ========      ========     ========

                        <FN>
                         ++Commencement of Operations.
                        +++Aggregate total investment return.
                          *Annualized.
                         **Total investment returns exclude the effects of sales loads.

                           See Notes to Financial Statements.
</TABLE>
<PAGE>

NOTES TO FINANCIAL STATEMENTS

1. Significant Accounting Policies:
Merrill Lynch Arizona Municipal Bond Fund (the "Fund") is part of
Merrill Lynch Multi-State Municipal Series Trust (the "Trust").
The Fund is registered under the Investment Company Act of 1940
as a diversified, open-end management investment company. The Fund
offers both Class A and Class B Shares. Class A Shares are sold
with a front-end sales charge. Class B Shares may be subject to a
contingent deferred sales charge. Both classes of shares have
identical voting, dividend, liquidation and other rights and the
same terms and conditions, except that Class B Shares bear
certain expenses related to the distribution of such shares and
have exclusive voting rights with respect to matters relating to
such distribution expenditures. The following is a summary of
significant accounting policies followed by the Fund.

(a) Valuation of investments--Municipal bonds and other portfolio
securities in which the Fund invests are traded primarily in the
over-the-counter municipal bond and money markets and are valued at
the last available bid price in the over-the-counter market or on
the basis of yield equivalents as obtained from one or more
dealers that make markets in the securities. Financial futures
contracts and options thereon, which are traded on exchanges, are
valued at their settlement prices as of the close of such
exchanges. Options, which are traded on exchanges, are valued at
their last sale price as of the close of such exchanges or,
lacking any sales, at the last available bid price. Securities
and assets for which market quotations are not readily available
are valued at fair value as determined in good faith by or under
the direction of the Board of Trustees of the Trust, including
valuations furnished by a pricing service retained by the Trust,
which may utilize a matrix system for valuations. The procedures
of the pricing service and its valuations are reviewed by the
officers of the Trust under the general supervision of the
Trustees.
<PAGE>
(b) Financial futures contracts--The Fund may purchase or sell
interest rate futures contracts and options on such futures
contracts for the purpose of hedging the market risk on existing
securities or the intended purchase of securities. Futures
contracts are contracts for delayed delivery of securities at a
specific future date and at a specific price or yield. Upon
entering into a contract, the Fund deposits and maintains as
collateral such initial margin as required by the exchange on
which the transaction is effected. Pursuant to the contract, the
Fund agrees to receive from or pay to the broker an amount of
cash equal to the daily fluctuation in value of the contract.
Such receipts or payments are known as variation margin and are
recorded by the Fund as unrealized gains or losses. When the
contract is closed, the Fund records a realized gain or loss
equal to the difference between the value of the contract at the
time it was opened and the value at the time it was closed.

(c) Income taxes--It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated
investment companies and to distribute substantially all of its
taxable income to its shareholders. Therefore, no Federal income
tax provision is required.

(d) Security transactions and investment income--Security
transactions are recorded on the dates the transactions are
entered into (the trade dates). Interest income is recognized on
the accrual basis. Original issue discounts and market premiums
are amortized into interest income. Realized gains and losses on
security transactions are determined on the identified cost
basis.

(e) Deferred organization expenses and prepaid registration
fees--Deferred organization expenses are charged to expense on a
straight-line basis over a five-year period. Prepaid registration
fees are charged to expense as the related shares are issued.

NOTES TO FINANCIAL STATEMENTS (concluded)

(f) Dividends and distributions--Dividends from net investment
income are declared daily and paid monthly. Distributions of
capital gains are recorded on the ex-dividend dates.
<PAGE>

2. Investment Advisory Agreement and Transactions with
Affiliates:
The Fund has entered into an Investment Advisory Agreement with
Fund Asset Management, L.P. ("FAM"). Effective January 1, 1994,
the investment advisory business of FAM was reorganized from a
corporation to a limited partnership. Both prior to and after the
reorganization, ultimate control of FAM was vested with Merrill
Lynch & Co., Inc. ("ML & Co."). The general partner of FAM is
Princeton Services, Inc., an indirect wholly-owned subsidiary of
ML & Co. The limited partners are ML & Co. and Merrill Lynch
Investment Management, Inc. ("MLIM"), which is also an indirect
wholly-owned subsidiary of ML & Co. The Fund has also entered
into Distribution Agreements and a Distribution Plan with Merrill
Lynch Funds Distributor, Inc. ("MLFD" or "Distributor"), a
wholly-owned subsidiary of MLIM.

FAM is responsible for the management of the Fund's portfolio and
provides the necessary personnel, facilities, equipment and
certain other services necessary to the operations of the Fund.
For such services, the Fund pays a monthly fee based upon the
average daily value of the Fund's net assets at the following
annual rates: 0.55% of the Fund's average daily net assets not
exceeding $500 million; 0.525% of average daily net assets in
excess of $500 million but not exceeding $1 billion; and 0.50% of
average daily net assets in excess of $1 billion. The Investment
Advisory Agreement obligates FAM to reimburse the Fund to the
extent the Fund's expenses (excluding interest, taxes,
distribution fees, brokerage fees and commissions, and
extraordinary items) exceed 2.5% of the Fund's first $30 million
of average daily net assets, 2.0% of the next $70 million of
average daily net assets and 1.5% of the average daily net assets
in excess thereof. FAM's obligation to reimburse the Fund is
limited to the amount of the management fee. No fee payment will
be made during any fiscal year which will cause such expenses to
exceed expense limitation at the time of such payment. For the
six months ended January 31, 1994, FAM had management fees of
$288,571, of which $132,119 was waived.

Pursuant to a distribution plan (the "Distribution Plan") adopted
by the Fund under Rule 12b-1 under the Investment Company Act of
1940, the Fund pays the Distributor ongoing account maintenance
and distribution fees relating to Class B Shares which are
accrued daily and paid monthly at the annual rates of 0.25% and
0.25%, respectively, of the average daily net assets of the Class
B Shares of the Fund. This fee is to compensate the Distributor
for services provided and the expenses borne by the Distributor
under the Distribution Agreement. As authorized by the Plan, the
Distributor has entered into an agreement with Merrill Lynch,
Pierce, Fenner & Smith Inc. ("MLPF&S"), an affiliate of FAM,
which provides for the compensation of MLPF&S for providing
distribution-related services to the Fund.

For the six months ended January 31, 1994, MLFD earned
underwriting discounts of $4,149, and MLPF&S earned dealer
concessions of $56,104 on sales of the Fund's Class A Shares.
<PAGE>
MLPF&S also received contingent deferred sales charges of $62,249
for the sale of Class B Shares during the period.

Financial Data Services, Inc. ("FDS"), a wholly-owned subsidiary
of ML & Co., is the Fund's transfer agent.

Accounting services are provided to the Fund by FAM at cost.

Certain officers and/or trustees of the Fund are officers and/or
directors of FAM, MLIM, MLFD, FDS, MLPF&S and/or ML & Co.

3. Investments:
Purchases and sales of investments, excluding short-term
securities, for the six months ended January 31, 1994 were
$43,637,359 and $32,082,047, respectively.

Net realized and unrealized gains (losses) as of January 31, 1994
were as follows:
                                     Realized           
                                      Gains        Unrealized
                                     (Losses)         Gains

Long-term investments               $1,386,080     $7,922,489
Short-term investments                      --        594,000
Financial futures contracts            (85,844)            --
                                    ----------     ----------
Total                               $1,300,236     $8,516,489
                                    ==========     ==========

As of January 31, 1994, net unrealized appreciation for Federal
income tax purposes aggregated $8,516,489, of which $8,529,371
related to appreciated securities and $12,882 related to
depreciated securities. The aggregate cost of investments at
January 31, 1994 for Federal income tax purposes was
$101,321,702.

4. Beneficial Interest Transactions:
Net increase in net assets derived from beneficial interest
transactions was $10,308,701 and $22,046,923 for the six months
ended January 31, 1994 and the year ended July 31, 1993,
respectively.

Transactions in shares of beneficial interest for Class A and
Class B Shares were as follows:

Class A Shares for the Six Months                   Dollar
Ended January 31, 1994                Shares        Amount

Shares sold                            395,098    $ 4,397,173
Shares issued to shareholders 
in reinvestment of dividends
and distributions                       39,981        444,829
<PAGE>                               ---------    -----------
Total issued                           435,079      4,842,002
Shares redeemed                        (79,021)      (886,356)
                                     ---------    -----------
Net increase                           356,058    $ 3,955,646
                                     =========    ===========

Class A Shares for the Year                         Dollar
Ended July 31,1993                    Shares        Amount

Shares sold                            584,723    $ 6,243,131
Shares issued to shareholders
in reinvestment of dividends 
and distributions                       48,118        511,965
                                     ---------    -----------
Total issued                           632,841      6,755,096
Shares redeemed                       (354,895)    (3,778,384)
                                     ---------    -----------
Net increase                           277,946    $ 2,976,712
                                     =========    ===========

Class B Shares for the 
Six Months Ended                                    Dollar
January 31, 1994                      Shares        Amount

Shares sold                            885,179    $ 9,895,169
Shares issued to shareholders 
in reinvestment of dividends
and distributions                      143,542      1,596,303
                                     ---------    -----------
Total issued                         1,028,721     11,491,472
Shares redeemed                       (459,831)    (5,138,417)
                                     ---------    -----------
Net increase                           568,890    $ 6,353,055
                                     =========    ===========

Class B Shares for the Year                         Dollar
Ended July 31,1993                    Shares        Amount

Shares sold                          2,432,048    $25,974,673
Shares issued to shareholders
in reinvestment of dividends 
and distributions                      163,371      1,737,881
                                     ---------    -----------
Total issued                         2,595,419     27,712,554
Shares redeemed                       (806,190)    (8,642,343)
                                     ---------    -----------
Net increase                         1,789,229    $19,070,211
                                     =========    ===========


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