MERRILL LYNCH ARIZONA MUNICIPAL BD FD OF MLMSMST
485BPOS, 1999-11-24
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    As filed with the Securities and Exchange Commission on November 24, 1999


                                                Securities Act File No. 33-41311
                                        Investment Company Act File No. 811-4375
================================================================================

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                            ------------------------


                                    FORM N-1A
             REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933       [X]
                           Pre-Effective Amendment No.                     [ ]
                         Post-Effective Amendment No. 10                   [X]
                                     and/or
         REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940   [X]
                               Amendment No. 199                           [X]
                        (Check appropriate box or boxes)


                            ------------------------

                    Merrill Lynch Arizona Municipal Bond Fund
               of Merrill Lynch Multi-State Municipal Series Trust
               (Exact Name of Registrant as Specified in Charter)

                             800 Scudders Mill Road
                          Plainsboro, New Jersey 08536
                    (Address of Principal Executive Offices)

                                 (609) 282-2800
              (Registrant's Telephone Number, including Area Code)

                            ------------------------

                                 Terry K. Glenn
                  Merrill Lynch Multi-state Municipal Series Trust
              800 Scudders Mill Road, Plainsboro, New Jersey 08536
                                Mailing Address:
                 P.O. Box 9011, Princeton, New Jersey 08543-9011
                     (Name and Address of Agent for Service)

                            ------------------------

                                   Copies to:

          Counsel for the Trust               Michael J. Hennewinkel, Esq.
            BROWN & WOOD LLP                          MERRILL LYNCH
         One World Trade Center                     ASSET MANAGEMENT
      New York, New York 10048-0557                   P.O. Box 9011
  Attention: Thomas R. Smith, Jr., Esq.     Princeton, New Jersey 08543-9011
        Brian M. Kaplowitz, Esq.

                            ------------------------


     It is proposed that this filing will become effective (check appropriate
box):





         [ ] immediately upon filing pursuant to paragraph (b)
         [X] on November 29, 1999 pursuant to paragraph (b)
         [ ] 60 days after filing pursuant to paragraph (a)(1)
         [ ] on (date) pursuant to paragraph (a)(1)
         [ ] 75 days after filing pursuant to paragraph (a)(2)
         [ ] on (date) pursuant to paragraph (a)(2) of Rule 485.


     If appropriate, check the following box:

         [ ] this post-effective amendment designates a new effective date for a
             previously filed post-effective amendment.

                            ------------------------

Title of Securities Being Registered: Shares of Beneficial Interest, par value
$.10 per share.
================================================================================

<PAGE>

Prospectus


                                                            Merrill Lynch [logo]


Merrill Lynch Arizona Municipal Bond Fund
of Merrill Lynch Multi-State Municipal Series Trust


November 29, 1999


This Prospectus contains information you should know before investing, including
information about risks. Please read it before you invest and keep it for future
reference.

The Securities and Exchange Commission has not approved or disapproved these
securities or passed upon the adequacy of this Prospectus. Any representation to
the contrary is a criminal offense.

<PAGE>

Table of Contents


                                                                            PAGE


[CLIP ART]  KEY FACTS
- -------------------------------------------------------------------------------
Merrill Lynch Arizona Municipal Bond Fund at a Glance ......................  3

Risk/Return Bar Chart ......................................................  5

Fees and Expenses ..........................................................  6




[CLIP ART]  DETAILS ABOUT THE FUND
- -------------------------------------------------------------------------------
How the Fund Invests .......................................................  8

Investment Risks ...........................................................  9




[CLIP ART]  YOUR ACCOUNT
- -------------------------------------------------------------------------------
Merrill Lynch Select Pricing(SM) System .................................... 14

How to Buy, Sell, Transfer and Exchange Shares ............................. 19

Participation in Merrill Lynch Fee-Based Programs .......................... 23




[CLIP ART]  MANAGEMENT OF THE FUND
- -------------------------------------------------------------------------------
Fund Asset Management ...................................................... 26

Financial Highlights ....................................................... 27




[CLIP ART]  FOR MORE INFORMATION
- -------------------------------------------------------------------------------
Shareholder Reports ...............................................  Back Cover

Statement of Additional Information ...............................  Back Cover



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>


Key Facts  [CLIP ART]


In an effort to help you better
understand the many concepts
involved in making an investment
decision, we have defined
highlighted terms in this prospectus
in the sidebar.

Investment Grade -- any of the
four highest debt obligation ratings
by recognized rating agencies,
including Moody's Investors Service,
Inc., Standard & Poor's or Fitch
IBCA, Inc.

Arizona Municipal Bond -- a debt
obligation issued by or on behalf
of a governmental entity in Arizona
or other qualifying issuer that pays
interest exempt from Arizona
income taxes as well as from Federal
income tax.


MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND AT A GLANCE
- --------------------------------------------------------------------------------

What is the Fund's investment objective?

The investment objective of the Fund is to provide shareholders with income
exempt from Federal and Arizona income taxes.

What are the Fund's main investment strategies?

The Fund invests primarily in a portfolio of long term investment grade Arizona
municipal bonds. These may be obligations of a variety of issuers including
governmental entities in Arizona and issuers located in Puerto Rico, the U.S.
Virgin Islands and Guam. The Fund will invest at least 65% of its assets in
Arizona municipal bonds and at least 80% of its total assets in Arizona
municipal bonds and other bonds that pay interest exempt from Federal income tax
but not Arizona income tax. The Fund may invest up to 20% of its assets in high
yield bonds (also known as "junk" bonds), however the Fund will not invest in
bonds that are in default or that Fund management believes will be in default.
The Fund also may invest in certain types of derivative securities. When
choosing investments, Fund management considers various factors, including the
credit quality of issuers, yield analysis, maturity analysis and the call
features of the obligations. Under normal conditions, the Fund's weighted
average maturity will be more than ten years. The Fund cannot guarantee that it
will achieve its objective.


What are the main risks of investing in the Fund?

As with any fund, the value of the Fund's investments -- and therefore the value
of Fund shares -- may go up or down. These changes may occur in response to
interest rate changes or other factors that may affect a particular issuer or
obligation. Generally, when interest rates go up, the value of debt instruments
like municipal bonds goes down. If the value of the Fund's investments goes
down, you may lose money. Prices of longer term securities generally change more
in response to interest rate changes than prices of shorter term securities.


In addition, since the Fund invests at least 65% of its assets in Arizona
municipal bonds, it is more exposed to negative political or economic factors in
Arizona than a fund that invests more widely. Derivatives and high yield bonds
may be volatile and subject to liquidity, leverage and credit risks.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                   3


<PAGE>

[CLIP ART] Key Facts



Who should invest?

The Fund may be an appropriate investment for you if you:

        o Are looking for income that is exempt from Federal and Arizona
          income taxes

        o Want a professionally managed portfolio without the administrative
          burdens of direct investments in municipal bonds

        o Are looking for liquidity

        o Can tolerate the risk of loss caused by negative political or
          economic developments in Arizona, changes in interest rates or
          adverse changes in the price of bonds in general



4                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>

RISK/RETURN BAR CHART
- --------------------------------------------------------------------------------


The bar chart and table shown below provide an indication of the risks of
investing in the Fund. The bar chart shows changes in the Fund's performance for
Class B shares for each complete calendar year since the Fund's inception. Sales
charges are not reflected in the bar chart. If these amounts were reflected,
returns would be less than those shown. The table compares the average annual
total returns for each class of the Fund's shares for the periods shown with
those of the Lehman Brothers Municipal Bond Index. How the Fund performed in the
past is not necessarily an indication of how the Fund will perform in the
future.

[The following information was depicted as a bar chart in the printed material]


    1992      1993       1994       1995       1996      1997        1998
    ----      ----       ----       ----       ----      ----        ----
    9.45%    12.91%     -6.50%     17.52%      1.58%     7.62%       5.06%



During the period shown in the bar chart, the highest return for a quarter was
7.14% (quarter ended March 31, 1995) and the lowest return for a quarter was
- -6.27% (quarter ended March 31, 1994). The Fund's year-to-date return as of
September 30, 1999 was -2.23%.


<TABLE>
<CAPTION>
Average Annual Total Returns (as of the               Past         Past         Since
calendar year ended December 31, 1998)              One Year    Five Years    Inception
- ---------------------------------------------------------------------------------------
<S>                                         <C>       <C>          <C>         <C>
 Merrill Lynch Arizona Municipal Bond Fund* A         1.37%        4.44%       6.82%+
 Lehman Brothers Municipal Bond Index**               6.48%        6.22%       7.66%++
- ---------------------------------------------------------------------------------------
 Merrill Lynch Arizona Municipal Bond Fund* B         1.08%        4.76%       6.90%+
 Lehman Brothers Municipal Bond Index**               6.48%        6.22%       7.66%++
- ---------------------------------------------------------------------------------------
 Merrill Lynch Arizona Municipal Bond Fund* C         3.87%         N/A        6.99%#
 Lehman Brothers Municipal Bond Index**               6.48%         N/A        8.98%##
- ---------------------------------------------------------------------------------------
 Merrill Lynch Arizona Municipal Bond Fund* D         1.27%         N/A        6.51%#
 Lehman Brothers Municipal Bond Index**               6.48%         N/A        8.98%##
- ---------------------------------------------------------------------------------------
</TABLE>

  * Includes sales charge.
 ** This unmanaged Index consists of long term revenue bonds, prerefunded bonds,
    general obligation bonds and insured bonds. Past performance is not
    predictive of future performance.
  + Inception date is November 29, 1991.
 ++ Since November 30, 1991.
  # Inception date is October 21, 1994.
 ## Since October 31, 1994.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                   5

<PAGE>

[CLIP ART] Key Facts


UNDERSTANDING
EXPENSES

Fund investors pay various fees
and expenses, either directly or
indirectly. Listed below are some
of the main types of expenses,
which all mutual funds may
charge:

Expenses paid directly by the
shareholder:

Shareholder Fees -- these include sales
charges which you may pay when you buy
or sell shares of the Fund.

Expenses paid indirectly by the
shareholder:

Annual Fund Operating Expenses --
expenses that cover the costs of
operating the Fund.

Management Fee -- a fee paid to the
Manager for managing the Fund.

Distribution Fees -- fees used to
support the Fund's marketing and
distribution efforts, such as
compensating Financial Consultants,
advertising and promotion.

Service (Account Maintenance) Fees --
fees used to compensate securities
dealers for account maintenance
activities.

FEES AND EXPENSES
- --------------------------------------------------------------------------------

The Fund offers four different classes of shares. Although your money will be
invested the same way no matter which class of shares you buy, there are
differences among the fees and expenses associated with each class. Not everyone
is eligible to buy every class. After determining which classes you are eligible
to buy, decide which class best suits your needs. Your Merrill Lynch Financial
Consultant can help you with this decision.

This table shows the different fees and expenses that you may pay if you buy and
hold the different classes of shares of the Fund. Future expenses may be greater
or less than those indicated below.


<TABLE>
<CAPTION>


 Shareholder Fees (fees paid directly from
 your investment)(a):                             Class A   Class B(b)   Class C     Class D
- --------------------------------------------------------------------------------------------
<S>                                               <C>          <C>        <C>        <C>

  Maximum Sales Charge (Load) imposed on
  purchases (as a percentage of offering price)   4.00%(c)     None       None       4.00%(c)
- ---------------------------------------------------------------------------------------------
  Maximum Deferred Sales Charge (Load) (as
  a percentage of original purchase price or
  redemption proceeds, whichever is lower)         None(d)    4.0%(c)     1.0%(c)     None(d)
- ---------------------------------------------------------------------------------------------
  Maximum Sales Charge (Load) imposed on
  Dividend Reinvestments                           None        None       None        None
- ---------------------------------------------------------------------------------------------
  Redemption Fee                                   None        None       None        None
- ---------------------------------------------------------------------------------------------
  Exchange Fee                                     None        None       None        None
- ---------------------------------------------------------------------------------------------
 Annual Fund Operating Expenses (expenses that are
 deducted from Fund assets):
- ---------------------------------------------------------------------------------------------
  Management Fee(e)                                0.55%       0.55%      0.55%      0.55%
- ---------------------------------------------------------------------------------------------
  Distribution and/or Service (12b-1) Fees(f)      None        0.50%      0.60%      0.10%
- ---------------------------------------------------------------------------------------------
  Other Expenses (including transfer agency
  fees)(g)                                         0.39%       0.39%      0.39%      0.40%
- ---------------------------------------------------------------------------------------------
 Total Annual Fund Operating Expenses              0.94%       1.44%      1.54%      1.05%
- ---------------------------------------------------------------------------------------------

</TABLE>

(a) In addition, Merrill Lynch may charge clients a processing fee (currently
    $5.35) when a client buys or redeems shares.
(b) Class B shares automatically convert to Class D shares about ten years after
    you buy them. Then they will no longer be subject to distribution fees and
    will pay lower account maintenance fees.
(c) Some investors may qualify for reductions in the sales charge (load).
(d) You may pay a deferred sales charge if you purchase $1 million or more and
    you redeem within one year.
(e) The Fund pays the Manager a fee at the annual rate of 0.55% of the average
    daily net assets of the Fund for the first $500 million; 0.525% of the
    average daily net assets from $500 million to $1 billion; and 0.50% of the
    average daily net assets above $1 billion. For the fiscal year ended July
    31, 1999, the Manager received a fee equal to 0.55% of the Fund's average
    daily net assets.
(f) The Fund calls the "Service Fee" an "Account Maintenance Fee." Account
    Maintenance Fee is the term used elsewhere in this Prospectus and in all
    other Fund materials. If you hold Class B or Class C shares for a long time,
    it may cost you more in distribution (12b-1) fees than the maximum sales
    charge that you would have paid if you had bought one of the other classes.


6                  MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND


<PAGE>

(footnotes continued from previous page)

(g) The Fund pays the Transfer Agent $11.00 for each Class A and Class D
    shareholder account and $14.00 for each Class B and Class C shareholder
    account and reimburses the Transfer Agent's out-of-pocket expenses. The Fund
    pays a 0.10% fee for certain accounts that participate in the Merrill Lynch
    Mutual Fund Advisor program. The Fund also pays a $0.20 monthly closed
    account charge, which is assessed upon all accounts that close during the
    year. This fee begins the month following the month the account is closed
    and ends at the end of the calendar year. For the fiscal year ended July 31,
    1999, the Fund paid the Transfer Agent fees totaling $30,195. The Manager
    provides accounting services to the Fund at its cost. For the fiscal year
    ended July 31, 1999, the Fund reimbursed the Manager $56,198 for these
    services.

Examples:

These examples are intended to help you compare the cost of investing in the
Fund with the cost of investing in other mutual funds.

These examples assume that you invest $10,000 in the Fund for the time periods
indicated, that your investment has a 5% return each year, that you pay the
sales charges, if any, that apply to the particular class and that the Fund's
operating expenses remain the same. This assumption is not meant to indicate you
will receive a 5% annual rate of return. Your annual return may be more or less
than the 5% used in this example. Although your actual costs may be higher or
lower, based on these assumptions your costs would be:

EXPENSES IF YOU DID REDEEM YOUR SHARES:

                     1 Year       3 Years      5 Years     10 Years
- -------------------------------------------------------------------
 Class A              $492         $688         $899        $1,509
- -------------------------------------------------------------------
 Class B              $547         $656         $787        $1,724
- -------------------------------------------------------------------
 Class C              $257         $486         $839        $1,835
- -------------------------------------------------------------------
 Class D              $503         $721         $956        $1,631
- -------------------------------------------------------------------


EXPENSES IF YOU DID NOT REDEEM YOUR SHARES:

                     1 Year       3 Years      5 Years     10 Years
- -------------------------------------------------------------------
 Class A              $492         $688         $899        $1,509
- -------------------------------------------------------------------
 Class B              $147         $456         $787        $1,724
- -------------------------------------------------------------------
 Class C              $157         $486         $839        $1,835
- -------------------------------------------------------------------
 Class D              $503         $721         $956        $1,631
- -------------------------------------------------------------------


                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                   7


<PAGE>


Details About the Fund [CLIP ART]



ABOUT THE
PORTFOLIO MANAGER


Walter O'Connor is the portfolio
manager and Vice President of
the Fund. He has been a Director
(Municipal Tax Exempt) of Merrill
Lynch Asset Management since
1997 and was Vice President
thereof from 1993 to 1997.

ABOUT THE MANAGER

The Fund is managed by Fund
Asset Management.


HOW THE FUND INVESTS
- --------------------------------------------------------------------------------

The Fund's main objective is to seek income that is exempt from Federal and
Arizona income taxes. The Fund invests primarily in long term, investment grade
Arizona municipal bonds. These may be obligations of a variety of issuers
including governmental entities or other qualifying issuers. Issuers may be
located in Arizona or in other qualifying jurisdictions such as Puerto Rico, the
U.S. Virgin Islands and Guam.

The Fund may invest in either fixed rate or variable rate obligations. At least
80% of the Fund's total assets will be invested in investment grade securities.
The Fund may invest up to 20% of its total assets in high yield ("junk") bonds.
These bonds are generally more speculative and involve greater price
fluctuations than investment grade securities.

The Fund will invest at least 80% of its total assets in obligations that pay
interest exempt from Federal income tax and at least 65% of its total assets in
Arizona municipal bonds. Under normal conditions, the Fund's weighted average
maturity will be more than ten years. For temporary periods, however, the Fund
may invest up to 35% of its total assets in short term tax exempt or taxable
money market obligations, although the Fund will not generally invest more than
20% of its net assets in taxable money market obligations. As a temporary
measure for defensive purposes, the Fund may invest without limitation in short
term tax exempt or taxable money market obligations. These short term
investments may limit the potential for the Fund to achieve its objective.


The Fund may use derivatives including futures, options, indexed securities and
inverse securities. Derivatives are financial instruments whose value is derived
from another security or an index such as the Lehman Brothers Municipal Bond
Index.

The Fund's investments may include private activity bonds that may subject
certain shareholders to a Federal alternative minimum tax.

Arizona's economy is influenced by numerous factors, including developments in
the aerospace, high technology, light manufacturing, government and service
industries. The Manager believes that current economic conditions in Arizona
will enable the Fund to continue to invest in high quality Arizona municipal
bonds.


8                  MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND


<PAGE>



Fund management considers a variety of factors when choosing investments, such
as:

      o  Credit Quality Of Issuers -- based on bond ratings and other factors
         including economic and financial conditions.

      o  Yield Analysis -- takes into account factors such as the different
         yields available on different types of obligations and the shape of the
         yield curve (longer term obligations typically have higher yields).

      o  Maturity Analysis -- the weighted average maturity of the portfolio
         will be maintained within a desirable range as determined from time to
         time. Factors considered include portfolio activity, maturity of the
         supply of available bonds and the shape of the yield curve.


In addition, Fund management considers the availability of features that protect
against an early call of a bond by the issuer.


INVESTMENT RISKS
- --------------------------------------------------------------------------------



This section contains a summary discussion of the general risks of investing in
the Fund. As with any mutual fund, there can be no guarantee that the Fund will
meet its goals or that the Fund's performance will be positive for any period of
time.

Bond Market And Selection Risk -- Bond market risk is the risk that the
bond market will go down in value, including the possibility that the market
will go down sharply and unpredictably. Selection risk is the risk that the
investments that Fund management selects will underperform the market or other
funds with similar investment objectives and investment strategies.

Credit Risk -- Credit risk is the risk that the issuer will be unable to pay the
interest or principal when due. The degree of credit risk depends on both the
financial condition of the issuer and the terms of the obligation.

Interest Rate Risk -- Interest rate risk is the risk that prices of municipal
bonds generally increase when interest rates decline and decrease when interest
rates increase. Prices of longer term securities generally change more in
response to interest rate changes than prices of shorter term securities.


                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                   9

<PAGE>

[CLIP ART] Details About the Fund


State Specific Risk -- The Fund will invest primarily in Arizona municipal
bonds. As a result, the Fund is more exposed to risks affecting issuers of
Arizona Municipal Bonds than is a municipal bond fund that invests more widely.


During the 1990's, Arizona's efforts to diversify its economy have enabled it to
realize and sustain increasing growth rates. Arizona has adopted a new method of
financing its public school system following the Arizona Supreme Court's 1994
ruling that the former system was unconstitutional. The State of Arizona is not
authorized to issue general obligation bonds.

Call And Redemption Risk -- A bond's issuer may call a bond for redemption
before it matures. If this happens to a bond the Fund holds, the Fund may lose
income and may have to invest the proceeds in bonds with lower yields.

Borrowing And Leverage -- The Fund may borrow for temporary emergency purposes
including to meet redemptions. Borrowing may exaggerate changes in the net asset
value of Fund shares and in the yield on the Fund's portfolio. Borrowing will
cost the Fund interest expense and other fees. The costs of borrowing may reduce
the Fund's return. Certain securities that the Fund buys may create leverage
including, for example, when issued securities, forward commitments and options.


Risks associated with certain types of obligations in which the Fund may invest
include:

General Obligation Bonds -- The faith, credit and taxing power of the issuer of
a general obligation bond secures payment of interest and repayment of
principal. Timely payments depend on the issuer's credit quality, ability to
raise tax revenues and ability to maintain an adequate tax base. The State of
Arizona does not issue general obligation bonds; however, counties,
municipalities and school districts in Arizona may issue general obligation
bonds.

Revenue Bonds -- Payments of interest and principal on revenue bonds are made
only from the revenues generated by a particular facility, class of facilities
or the proceeds of a special tax or other revenue source. These payments depend
on the money earned by the particular facility or class of facilities.
Industrial development bonds are one type of revenue bond.

Industrial Development Bonds -- Municipalities and other public authorities
issue industrial development bonds to finance development of industrial
facilities for use by a private enterprise. The private enterprise pays


10                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>


the principal and interest on the bond, and the issuer does not pledge its
faith, credit and taxing power for repayment. If the private enterprise defaults
on its payments, the Fund may not receive any income or get its money back from
the investment.

Moral Obligation Bonds -- Moral obligation bonds are generally issued by special
purpose public authorities of a state or municipality. If the issuer is unable
to meet its obligations, repayment of these bonds becomes a moral commitment,
but not a legal obligation, of the state or municipality.

Municipal Notes -- Municipal notes are shorter term municipal debt obligations.
They may provide interim financing in anticipation of tax collection, bond sales
or revenue receipts. If there is a shortfall in the anticipated proceeds, the
notes may not be fully repaid and the Fund may lose money.

Municipal Lease Obligations -- In a municipal lease obligation, the issuer
agrees to budget for and appropriate municipal funds to make payments due on the
lease obligation. However, this does not ensure that funds will actually be
appropriated in future years. The issuer does not pledge its unlimited taxing
power for payment of the lease obligation, but the leased property secures the
obligation. In addition, the proceeds of a sale may not cover the Fund's loss.

Insured Municipal Bonds -- Bonds purchased by the Fund may be covered by
insurance that guarantees timely interest payments and repayment of principal on
maturity. If a bond's insurer fails to fulfill its obligations or loses its
credit rating, the value of the bond could drop. Insured bonds are subject to
market risk.


Junk Bonds -- Junk bonds are debt securities that are rated below investment
grade by the major rating agencies or are unrated securities that Fund
management believes are of comparable quality. The Fund does not intend to
purchase debt securities that are in default or that Fund management believes
will be in default. Although junk bonds generally pay higher rates of interest
than investment grade bonds, they are high risk investments that may cause
income and principal losses for the Fund. Junk bonds generally are less liquid
and experience more price volatility than higher rated debt securities. The
issuers of junk bonds may have a larger amount of outstanding debt relative to
their assets than issuers of investment grade bonds. In the event of an issuer's
bankruptcy, claims of other creditors may have priority over the claims of junk
bond holders, leaving few or no assets available to repay junk bond holders.
Junk bonds may be subject to greater call and redemption risk than higher rated
debt securities.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  11

<PAGE>

[CLIP ART] Details About the Fund



When Issued Securities, Delayed Delivery Securities And Forward Commitments --
When issued and delayed delivery securities and forward commitments involve the
risk that the security the Fund buys will lose value prior to its delivery to
the Fund. There also is the risk that the security will not be issued or that
the other party will not meet its obligation, in which case the Fund loses the
investment opportunity of the assets it has set aside to pay for the security
and any gain in the security's price.

Variable Rate Demand Obligations -- Variable rate demand obligations (VRDOs) are
floating rate securities that combine an interest in a long term municipal bond
with a right to demand payment before maturity from a bank or other financial
institution. If the bank or financial institution is unable to pay, the Fund may
lose money.

Illiquid Investments -- The Fund may invest up to 15% of its assets in illiquid
securities that it cannot easily resell within seven days at current value or
that have contractual or legal restrictions on resale. If the Fund buys illiquid
securities it may be unable to quickly resell them or may be able to sell them
only at a price below current value.

Derivatives -- The Fund may use  derivative  instruments  including  indexed and
inverse  securities,  options on portfolio  positions,  options on securities or
other  financial  indices,  financial  futures  and  options  on  such  futures.
Derivatives  allow the Fund to  increase  or  decrease  its risk  exposure  more
quickly and efficiently than other types of instruments.

Derivatives are volatile and involve significant risks, including:

        Credit Risk -- the risk that the counterparty (the party on the other
        side of the transaction) on a derivative transaction will be unable to
        honor its financial obligation to the Fund.

        Leverage Risk -- the risk associated with certain types of investments
        or trading strategies that relatively small market movements may result
        in large changes in the value of an investment. Certain investments or
        trading strategies that involve leverage can result in losses that
        greatly exceed the amount originally invested.

        Liquidity Risk -- the risk that certain securities may be difficult or
        impossible to sell at the time that the seller would like or at the
        price that the seller believes the security is currently worth.



12                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>

The Fund may use derivatives for hedging purposes including anticipatory hedges.
Hedging is a strategy in which the Fund uses a derivative to offset the risk
that other Fund holdings may decrease in value. While hedging can reduce losses,
it can also reduce or eliminate gains if the market moves in a different manner
than anticipated by the Fund or if the cost of the derivative outweighs the
benefit of the hedge. Hedging also involves the risk that changes in the value
of the derivative will not match those of the holdings being hedged as expected
by the Fund, in which case any losses on the holdings being hedged may not be
reduced. There can be no assurance that the Fund's hedging strategy will reduce
risk or that hedging transactions will be either available or cost effective.
The Fund is not required to use hedging and may choose not to do so.


Indexed And Inverse Floating Rate Securities -- The Fund may invest in
securities whose potential returns are directly related to changes in an
underlying index or interest rate, known as indexed securities. The return on
indexed securities will rise when the underlying index or interest rate rises
and fall when the index or interest rate falls. The Fund may also invest in
securities whose return is inversely related to changes in an interest rate
(inverse floaters). In general, income on inverse floaters will decrease when
short term interest rates increase and increase when short term interest rates
decrease. Investments in inverse floaters may subject the Fund to the risks of
reduced or eliminated interest payments and losses of principal. In addition,
certain indexed securities and inverse floaters may increase or decrease in
value at a greater rate than the underlying interest rate, which effectively
leverages the Fund's investment. As a result, the market value of such
securities will generally be more volatile than that of fixed rate, tax exempt
securities. Both indexed securities and inverse floaters are derivative
securities and can be considered speculative.



STATEMENT OF ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------



If you would like further information about the Fund, including how it invests,
please see the Statement of Additional Information.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  13

<PAGE>


Your Account [CLIP ART]


MERRILL LYNCH SELECT PRICING(SM) SYSTEM
- --------------------------------------------------------------------------------



The Fund offers four share classes, each with its own sales charge and expense
structure, allowing you to invest in the way that best suits your needs. Each
share class represents an ownership interest in the same investment portfolio.
When you choose your class of shares you should consider the size of your
investment and how long you plan to hold your shares. Your Merrill Lynch
Financial Consultant can help you determine which share class is best suited to
your personal financial goals.


For example, if you select Class A or D shares, you generally pay a sales charge
at the time of purchase. If you buy Class D shares, you also pay an ongoing
account maintenance fee of 0.10%. You may be eligible for a sales charge
reduction or waiver.


If you select Class B or C shares, you will invest the full amount of your
purchase price, but you will be subject to a distribution fee of 0.25% on Class
B shares or 0.35% on Class C shares and an account maintenance fee of 0.25% on
both classes. Because these fees are paid out of the Fund's assets on an ongoing
basis, over time these fees increase the cost of your investment and may cost
you more than paying an initial sales charge. In addition, you may be subject to
a deferred sales charge when you sell Class B or C shares.

The Fund's shares are distributed by Merrill Lynch Funds Distributor, a division
of Princeton Funds Distributor, Inc., an affiliate of Merrill Lynch. The Fund is
a series of the Merrill Lynch Multi-State Municipal Series Trust.


14                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>

The table below summarizes key features of the Merrill Lynch Select Pricing(SM)
System.

<TABLE>
<CAPTION>


                    Class A                     Class B                    Class C                    Class D
- ----------------------------------------------------------------------------------------------------------------------------
<S>                 <C>                         <C>                        <C>                        <C>
Availability        Limited to certain          Generally available        Generally available        Generally available
                    investors including:        through Merrill Lynch.     through Merrill Lynch.     through Merrill Lynch.
                    o Current Class A           Limited availability       Limited availability       Limited availability
                      shareholders              through other              through other              through other
                    o Participants in           securities dealers.        securities dealers.        securities dealers.
                      certain Merrill
                      Lynch-sponsored
                      programs
                    o Certain affiliates of
                      Merrill Lynch
- ----------------------------------------------------------------------------------------------------------------------------
Initial Sales       Yes. Payable at time        No. Entire purchase        No. Entire purchase        Yes. Payable at time
Charge?             of purchase. Lower          price is invested in       price is invested in       of purchase. Lower
                    sales charges               shares of the Fund.        shares of the Fund.        sales charges
                    available for larger                                                              available for larger
                    investments.                                                                      investments.
- ----------------------------------------------------------------------------------------------------------------------------
Deferred Sales      No. (May be charged         Yes. Payable if you        Yes. Payable if you        No. (May be charged
Charge?             for purchases over          redeem within four         redeem within one          for purchases over
                    $1 million that are         years of purchase.         year of purchase.          $1 million that are
                    redeemed within                                                                   redeemed within
                    one year.)                                                                        one year.)
- ----------------------------------------------------------------------------------------------------------------------------
Account             No.                         0.25% Account              0.25% Account              0.10% Account
Maintenance and                                 Maintenance Fee            Maintenance Fee            Maintenance Fee
Distribution Fees?                              0.25% Distribution         0.35% Distribution         No Distribution Fee.
                                                Fee.                       Fee.
- ----------------------------------------------------------------------------------------------------------------------------
Conversion to       No.                         Yes, automatically         No.                        No.
Class D shares?                                 after approximately
                                                ten years.
- ----------------------------------------------------------------------------------------------------------------------------
</TABLE>






                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  15

<PAGE>

[CLIP ART] Your Account


Right of Accumulation -- permits
you to pay the sales charge that
would apply to the cost or value
(whichever is higher) of all shares
you own in the Merrill Lynch
mutual funds that offer Select
Pricing options.

Letter of Intent -- permits you to
pay the sales charge that would be
applicable if you add up all shares
of Merrill Lynch Select Pricing(SM)
System funds that you agree to
buy within a 13 month period.
Certain restrictions apply.

Class A and Class D Shares -- Initial Sales Charge Options

If you select Class A or Class D shares, you will pay a sales charge at the time
of purchase.

                                                                 Dealer
                                                              Compensation
                          As a % of          As a % of         as a % of
  Your Investment      Offering Price    Your Investment*    Offering Price
- -------------------------------------------------------------------------------
  Less than $25,000         4.00%              4.17%             3.75%
- -------------------------------------------------------------------------------
  $25,000 but less
  than $50,000              3.75%              3.90%             3.50%
- -------------------------------------------------------------------------------
  $50,000 but less
  than $100,000             3.25%              3.36%             3.00%
- -------------------------------------------------------------------------------
  $100,000 but less
  than $250,000             2.50%              2.56%             2.25%
- -------------------------------------------------------------------------------
  $250,000 but less
  than $1,000,000           1.50%              1.52%             1.25%
- -------------------------------------------------------------------------------
  $1,000,000 and over**     0.00%              0.00%             0.00%
- -------------------------------------------------------------------------------

  *Rounded to the nearest one-hundredth percent.

 **If you invest $1,000,000 or more in Class A or Class D shares, you may not
   pay an initial sales charge. However, if you redeem your shares within one
   year after purchase, you may be charged a deferred sales charge. This charge
   is 1% of the lesser of the original cost of the shares being redeemed or your
   redemption proceeds.

No initial sales charge applies to Class A or Class D shares that you buy
through reinvestment of dividends.

A reduced or waived sales charge on a purchase of Class A or Class D shares may
apply for:

        o Purchases under a Right of Accumulation or Letter of Intent

        o TMA(SM) Managed Trusts

        o Certain Merrill Lynch investment or central asset accounts

        o Purchases using proceeds from the sale of certain Merrill Lynch
          closed-end funds under certain circumstances

        o Certain investors, including directors or trustees of Merrill Lynch
          mutual funds and Merrill Lynch employees

        o Certain Merrill Lynch fee-based programs


16                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>


Only certain investors are eligible to buy Class A shares. Your Merrill Lynch
Financial Consultant can help you determine whether you are eligible to buy
Class A shares or to participate in any of these programs.

If you decide to buy shares under the initial sales charge alternative and you
are eligible to buy both Class A and Class D shares, you should buy Class A
since Class D shares are subject to a 0.10% account maintenance fee, while Class
A shares are not.

If you redeem Class A or Class D shares and within 30 days buy new shares of the
same class, you will not pay a sales charge on the new purchase amount. The
amount eligible for this "Reinstatement Privilege" may not exceed the amount of
your redemption proceeds. To exercise the privilege, contact your Merrill Lynch
Financial Consultant or the Fund's Transfer Agent at 1-800-MER-FUND.

Class B and Class C Shares -- Deferred Sales Charge Options

If you select Class B or Class C shares, you do not pay an initial sales charge
at the time of purchase. However, if you redeem your Class B shares within four
years after purchase, or your Class C shares within one year after purchase, you
may be required to pay a deferred sales charge. You will also pay distribution
fees of 0.25% for Class B shares and 0.35% for Class C shares and account
maintenance fees of 0.25% for Class B and Class C shares each year under
distribution plans that the Fund has adopted under Rule 12b-1. Because these
fees are paid out of the Fund's assets on an ongoing basis, over time these fees
increase the cost of your investment and may cost you more than paying an
initial sales charge. The Distributor uses the money that it receives from the
deferred sales charges and the distribution fees to cover the costs of
marketing, advertising and compensating the Merrill Lynch Financial Consultant
or other securities dealer who assists you in purchasing Fund shares.

Class B Shares

If you redeem Class B shares within four years after purchase, you may be
charged a deferred sales charge. The amount of the charge gradually decreases as
you hold your shares over time, according to the following schedule:


                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  17

<PAGE>

[CLIP ART] Your Account


          Years Since Purchase                 Sales Charge*
- ------------------------------------------------------------
           0 - 1                                  4.00%
- ------------------------------------------------------------
           1 - 2                                  3.00%
- ------------------------------------------------------------
           2 - 3                                  2.00%
- ------------------------------------------------------------
           3 - 4                                  1.00%
- ------------------------------------------------------------
           4 and thereafter                       0.00%
- ------------------------------------------------------------

* The percentage charge will apply to the lesser of the original cost of the
  shares being redeemed or the proceeds of your redemption. Shares acquired
  through reinvestment of dividends are not subject to a deferred sales charge.
  Not all Merrill Lynch funds have identical deferred sales charge schedules. If
  you exchange your shares for shares of another fund, the higher charge will
  apply.

The deferred sales charge relating to Class B shares may be reduced or waived in
certain circumstances, such as:

        o Redemption in connection with participation in certain Merrill Lynch
          fee-based programs

        o Withdrawals resulting from shareholder death or disability as long as
          the waiver request is made within one year of death or disability or,
          if later, reasonably promptly following completion of probate, or in
          connection with involuntary termination of an account in which Fund
          shares are held

        o Withdrawal through the Merrill Lynch Systematic Withdrawal Plan of up
          to 10% per year of your Class B account value at the time the plan is
          established

Your Class B shares convert automatically into Class D shares approximately ten
years after purchase. Any Class B shares received through reinvestment of
dividends paid on converting shares will also convert at that time. Class D
shares are subject to lower annual expenses than Class B shares. The conversion
of Class B to Class D shares is not a taxable event for Federal income tax
purposes.

Different conversion schedules apply to Class B shares of different Merrill
Lynch mutual funds. For example, Class B shares of a fixed-income fund typically
convert approximately ten years after purchase compared to


18                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>


approximately eight years for equity funds. If you acquire your Class B shares
in an exchange from another fund with a shorter conversion schedule, the Fund's
ten year conversion schedule will apply. If you exchange your Class B shares in
the Fund for Class B shares of a fund with a shorter conversion schedule, the
other fund's conversion schedule will apply. The length of time that you hold
both the original and exchanged Class B shares in both funds will count toward
the conversion schedule. The conversion schedule may be modified in certain
other cases as well.

Class C Shares

If you redeem Class C shares within one year after purchase, you may be charged
a deferred sales charge of 1.00%. The charge will apply to the lesser of the
original cost of the shares being redeemed or the proceeds of your redemption.
You will not be charged a deferred sales charge when you redeem shares that you
acquire through reinvestment of Fund dividends. The deferred sales charge
relating to Class C shares may be reduced or waived in connection with
involuntary termination of an account in which Fund shares are held and
withdrawals through the Merrill Lynch Systematic Withdrawal Plan.

Class C shares do not offer a conversion privilege.

HOW TO BUY, SELL, TRANSFER AND EXCHANGE SHARES
- -------------------------------------------------------------------------------





The chart on the following page summarizes how to buy, sell, transfer and
exchange shares through Merrill Lynch or other securities dealers. You may also
buy shares through the Transfer Agent. To learn more about buying, selling,
transferring or exchanging shares through the Transfer Agent, call
1-800-MER-FUND. Because the selection of a mutual fund involves many
considerations, your Merrill Lynch Financial Consultant may help you with this
decision.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  19

<PAGE>

[CLIP ART] Your Account


<TABLE>
<CAPTION>



If You Want to        Your Choices                     Information Important for You to Know
- -----------------------------------------------------------------------------------------------------------------------------

<S>                   <C>                              <C>
Buy Shares            First, select the share class    Refer to the Merrill Lynch Select Pricing table on page 15. Be sure
                      appropriate for you              to read this prospectus carefully.
                      -------------------------------------------------------------------------------------------------------
                      Next, determine the amount of    The minimum initial investment for the Fund is $1,000 for all
                      your investment                  accounts except that certain Merrill Lynch fee-based programs have
                                                       a $250 initial minimum investment.

                                                       (The minimums for initial investments may be waived under certain
                                                       circumstances.)
                      -------------------------------------------------------------------------------------------------------
                      Have your Merrill Lynch          The price of your shares is based on the next calculation of net
                      Financial Consultant or          asset value after your order is placed. Any purchase orders placed
                      securities dealer submit         prior to the close of business on the New York Stock Exchange
                      your purchase order              (generally 4:00 p.m. Eastern time) will be priced at the net asset
                                                       value determined that day.

                                                       Purchase orders placed after that time will be priced at the net
                                                       asset value determined on the next business day. The Fund may
                                                       reject any order to buy shares and may suspend the sale of shares
                                                       at any time. Merrill Lynch may charge a processing fee to confirm a
                                                       purchase. This fee is currently $5.35.
                      -------------------------------------------------------------------------------------------------------
                      Or contact the Transfer          To purchase shares directly, call the Transfer Agent at 1-800-MER-
                      Agent                            FUND and request a purchase application. Mail the completed
                                                       purchase application to the Transfer Agent at the address on the
                                                       inside back cover of this Prospectus.
- -----------------------------------------------------------------------------------------------------------------------------
Add to Your           Purchase additional shares       The minimum investment for additional purchases is generally $50
Investment                                             except that certain programs, such as automatic investment plans,
                                                       may have higher minimums.

                                                       (The minimum for additional purchases may be waived under
                                                       certain circumstances.)
                      -------------------------------------------------------------------------------------------------------
                      Acquire additional shares        All dividends are automatically reinvested without a sales charge.
                      through the automatic
                      dividend reinvestment plan
                      -------------------------------------------------------------------------------------------------------
                      Participate in the automatic     You may invest a specific amount on a periodic basis through
                      investment plan                  certain Merrill Lynch investment or central asset accounts.
- -----------------------------------------------------------------------------------------------------------------------------
Transfer Shares       Transfer to a participating      You may transfer your Fund shares only to another securities
to Another            securities dealer                dealer that has entered into an agreement with Merrill Lynch.
Securities Dealer                                      Certain shareholder services may not be available for the
                                                       transferred shares. You may only purchase additional shares of
                                                       funds previously owned before the transfer. All future trading of
                                                       these assets must be coordinated by the receiving firm.
                      -------------------------------------------------------------------------------------------------------
                      Transfer to a non-participating  You must either:
                      securities dealer                  o Transfer your shares to an account with the Transfer Agent; or
                                                         o Sell your shares, paying any applicable deferred sales charge.
- -----------------------------------------------------------------------------------------------------------------------------

</TABLE>


20                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>


<TABLE>
<CAPTION>



If You Want to        Your Choices                     Information Important for You to Know
- -----------------------------------------------------------------------------------------------------------------------------


<S>                   <C>                              <C>
Sell Your Shares      Have your Merrill Lynch          The price of your shares is based on the next calculation of net
                      Financial Consultant or          asset value after your order is placed. For your redemption request
                      securities dealer submit         to be priced at the net asset value on the day of your request, you
                      your sales order                 must submit your request to your dealer prior to that day's close of
                                                       business on the New York Stock Exchange (generally 4:00 p.m.
                                                       Eastern time). Any redemption request placed after that time will
                                                       be priced at the net asset value at the close of business on the next
                                                       business day. Dealers must submit redemption requests to the Fund
                                                       not more than thirty minutes after the close of business on the
                                                       New York Stock Exchange on the day the request was received.

                                                       Securities dealers, including Merrill Lynch, may charge a fee to
                                                       process a redemption of shares. Merrill Lynch currently charges a
                                                       fee of $5.35. No processing fee is charged if you redeem shares
                                                       directly through the Transfer Agent.

                                                       The Fund may reject an order to sell shares under certain
                                                       circumstances.
- -----------------------------------------------------------------------------------------------------------------------------
                      Sell through the Transfer Agent  You may sell shares held at the Transfer Agent by writing to the
                                                       Transfer Agent at the address on the inside back cover of this
                                                       prospectus. All shareholders on the account must sign the letter.
                                                       A signature guarantee will generally be required but may be
                                                       waived in certain limited circumstances. You can obtain a signature
                                                       guarantee from a bank, securities dealer, securities broker, credit
                                                       union, savings association, national securities exchange or
                                                       registered securities association. A notary public seal will not be
                                                       acceptable. If you hold stock certificates, return the certificates
                                                       with the letter. The Transfer Agent will normally mail redemption
                                                       proceeds within seven days following receipt of a properly
                                                       completed request. If you make a redemption request before the
                                                       Fund has collected payment for the purchase of shares, the Fund or
                                                       the Transfer Agent may delay mailing your proceeds. This delay will
                                                       usually not exceed ten days.

                                                       If you hold share certificates, they must be delivered to the Transfer
                                                       Agent before they can be converted. Check with the Transfer
                                                       Agent or your Merrill Lynch Financial Consultant for details.
- -----------------------------------------------------------------------------------------------------------------------------
Sell Shares           Participate in the Fund's        You can choose to receive systematic payments from your Fund
Systematically        Systematic Withdrawal Plan       account either by check or through direct deposit to your bank
                                                       account on a monthly or quarterly basis. If you hold your Fund
                                                       shares in a Merrill Lynch CMA(R) or CBA(R) Account you can arrange
                                                       for systematic redemptions of a fixed dollar amount on a monthly,
                                                       bi-monthly, quarterly, semi-annual or annual basis, subject to
                                                       certain conditions. Under either method you must have dividends
                                                       automatically reinvested. For Class B and C shares your total
                                                       annual withdrawals cannot be more than 10% per year of the
                                                       value of your shares at the time your plan is established. The
                                                       deferred sales charge is waived for systematic redemptions. Ask
                                                       your Merrill Lynch Financial Consultant for details.
- -----------------------------------------------------------------------------------------------------------------------------

</TABLE>


                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  21

<PAGE>

[CLIPART] Your Account



<TABLE>
<CAPTION>


If You Want to        Your Choices                     Information Important for You to Know
- -----------------------------------------------------------------------------------------------------------------------------


<S>                   <C>                              <C>
Exchange Your         Select the fund into which you   You can exchange your shares of the Fund for shares of many
Shares                want to exchange. Be sure to     other Merrill Lynch mutual funds. You must have held the shares
                      read that fund's prospectus      used in the exchange for at least 15 calendar days before you
                                                       can exchange to another fund.

                                                       Each class of Fund shares is generally exchangeable for shares of
                                                       the same class of another fund. If you own Class A shares and wish
                                                       to exchange into a fund in which you have no Class A shares (and are not
                                                       eligible to purchase Class A shares), you will exchange into Class D
                                                       shares.

                                                       Some of the Merrill Lynch mutual funds impose a different initial
                                                       or deferred sales charge schedule. If you exchange Class A or D
                                                       shares for shares of a fund with a higher initial sales charge than
                                                       you originally paid, you will be charged the difference at the time
                                                       of exchange. If you exchange Class B shares for shares of a fund
                                                       with a different deferred sales charge schedule, the higher
                                                       schedule will apply. The time you hold Class B or C shares in both
                                                       funds will count when determining your holding period for
                                                       calculating a deferred sales charge at redemption. If you exchange
                                                       Class A or D shares for money market fund shares, you will receive
                                                       Class A shares of Summit Cash Reserves Fund. Class B or C shares of
                                                       the Fund will be exchanged for Class B shares of Summit.

                                                       Although there is currently no limit on the number of exchanges
                                                       that you can make, the exchange privilege may be modified or
                                                       terminated at any time in the future.
- -----------------------------------------------------------------------------------------------------------------------------
</TABLE>


22                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND


<PAGE>


Net Asset Value -- the market
value of the Fund's total assets after
deducting liabilities, divided by the
number of shares outstanding.


HOW SHARES ARE PRICED
- -------------------------------------------------------------------------------


When you buy shares, you pay the net asset value, plus any applicable sales
charge. This is the offering price. Shares are also redeemed at their net asset
value, minus any applicable deferred sales charge. The Fund calculates its net
asset value (generally by using market quotations) each day the New York Stock
Exchange is open after the close of business on the Exchange (the Exchange
generally closes at 4:00 p.m. Eastern time). The net asset value used in
determining your price is the next one calculated after your purchase or
redemption order is placed.

Generally, Class A shares will have the highest net asset value because that
class has the lowest expenses, and Class D shares will have a higher net asset
value than Class B or Class C shares. Class B shares will have a higher net
asset value than Class C shares because Class B shares have lower distribution
expenses than Class C shares. Also dividends paid on Class A and Class D shares
will generally be higher than dividends paid on Class B and Class C shares
because Class A and Class D shares have lower expenses.



PARTICIPATION IN MERRILL LYNCH FEE-BASED PROGRAMS
- --------------------------------------------------------------------------------



If you participate in certain fee-based programs offered by Merrill Lynch, you
may be able to buy Class A shares at net asset value, including by exchanges
from other share classes. Sales charges on the shares being exchanged may be
reduced or waived under certain circumstances.

You generally cannot transfer shares held through a fee-based program into
another account. Instead, you will have to redeem your shares held through the
program and purchase shares of another class, which may be subject to
distribution and account maintenance fees. This may be a taxable event and you
will pay any applicable sales charges.

If you leave one of these programs, your shares may be redeemed or automatically
exchanged into another class of Fund shares or into a money market fund. The
class you receive may be the class you originally owned when you entered the
program, or in certain cases, a different class. If the exchange is into Class B
shares, the period before conversion to Class D shares may be modified. Any
redemption or exchange will be at net asset However, if you participate in the
program for less than a specified period, you may be charged a fee in accordance
with the terms of the program.


                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  23

<PAGE>

[CLIP ART] Your Account



Dividends -- exempt-interest,
ordinary income and capital gains
paid to shareholders. Dividends
may be reinvested in additional
Fund shares as they are paid.



Details about these features and the relevant charges are included in the client
agreement for each fee-based program and are available from your Merrill Lynch
Financial Consultant.


DIVIDENDS AND TAXES
- --------------------------------------------------------------------------------


The Fund will distribute any net investment income monthly and any net realized
long or short term capital gains at least annually. The Fund may also pay a
special distribution at the end of the calendar year to comply with Federal tax
requirements. If your account is with Merrill Lynch and you would like to
receive dividends in cash, contact your Merrill Lynch Financial Consultant. If
your account is with the Transfer Agent and you would like to receive dividends
in cash, contact the Transfer Agent.

Taxes


To the extent that the dividends distributed by the Fund are from municipal bond
interest income, they are exempt from Federal income tax, but may be subject to
state or local income taxes. Certain investors may be subject to a Federal
alternative minimum tax on dividends received from the Fund. To the extent that
the dividends distributed by the Fund are derived from Arizona municipal bond
interest income, they are also exempt from Arizona income taxes. Interest income
from other investments may produce taxable dividends. Dividends derived from
capital gains realized by the Fund will be subject to Federal tax, and generally
will be subject to Arizona tax as well. If you are subject to income tax in a
state other than Arizona, the dividends derived from Arizona municipal bonds
will not be exempt from income tax in that state.


Generally, within 60 days after the end of the Fund's taxable year, the Trust
will tell you the amount of exempt-interest dividends and capital gain dividends
you received that year. Capital gain dividends are taxable as long term capital
gains to you, regardless of how long you have held your shares. The tax
treatment of dividends from the Fund is the same whether you choose to receive
dividends in cash or to have them reinvested in shares of the Fund.



24                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND


<PAGE>



"BUYING A DIVIDEND"

You may want to avoid buying
shares shortly before the Fund
pays a dividend, although the
impact on you will be significantly
less than if you were invested in a
fund paying fully taxable
dividends. The reason? If you buy
shares when a fund has realized
but not yet distributed taxable
ordinary income (if any) or capital
gains, you will pay the full price
for the shares and then receive a
portion of the price back in the
form of a taxable dividend. Before
investing you may want to consult
your tax adviser.

By law, the Fund must withhold 31% of your dividends and proceeds if you have
not provided a taxpayer identification number or social security number or if
the number you have provided is incorrect.

If you redeem Fund shares or exchange them for shares of another fund, any gain
on the transaction may be subject to Federal income tax.

This section summarizes some of the consequences of an investment in the Fund
under current Federal and Arizona tax laws. It is not a substitute for personal
tax advice. Consult your personal tax adviser about the potential tax
consequences to you of an investment in the Fund under all applicable tax laws.




                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  25

<PAGE>


MANAGEMENT OF THE FUND [CLIP ART]


FUND ASSET MANAGEMENT
- -------------------------------------------------------------------------------



Fund Asset Management, the Fund's Manager, manages the Fund's investments and
its business operations under the overall supervision of the Trust's Board of
Trustees. The Manager has the responsibility for making all investment decisions
for the Fund. The Fund pays the Manager a fee at the annual rate of 0.55% of the
average daily net assets of the Fund for the first $500 million; 0.525% of the
average daily net assets from $500 million to $1 billion; and 0.50% of the
average daily net assets above $1 billion. For the fiscal year ended July 31,
1999, the Manager received a fee equal to 0.55% of the Fund's average daily net
assets.


Fund Asset Management was organized as an investment adviser in 1977 and offers
investment advisory services to more than 50 registered investment companies.
Fund Asset Management is part of the Asset Management Group of ML & Co. The
Asset Management Group had approximately $518 billion in investment company and
other portfolio assets under management as of October 1999. This amount includes
assets managed for Merrill Lynch affiliates.


A Note About Year 2000

Many computer systems were designed using only two digits to designate years.
These systems may not be able to distinguish the Year 2000 from the Year 1900
(commonly known as the "Year 2000 Problem"). The Fund could be adversely
affected if the computer systems used by Fund management or other Fund service
providers do not properly address this problem before January 1, 2000. Fund
management expects to have addressed this problem before then, and does not
anticipate that the services it provides will be adversely affected. The Fund's
other service providers have told Fund management that they also expect to
resolve the Year 2000 Problem, and Fund management will continue to monitor the
situation as the Year 2000 approaches. However, if the problem has not been
fully addressed, the Fund could be negatively affected. The Year 2000 Problem
could also have a negative impact on the issuers of securities in which the Fund
invests, and this could hurt the Fund's investment returns.



26                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND

<PAGE>

FINANCIAL HIGHLIGHTS
- -------------------------------------------------------------------------------

The Financial Highlights table is intended to help you understand the Fund's
financial performance for the periods shown. Certain information reflects
financial results for a single Fund share. The total returns in the table
represent the rate an investor would have earned on an investment in the Fund
(assuming reinvestment of all dividends). This information has been audited by
Deloitte & Touche LLP, whose report, along with the Fund's financial statements,
is included in the Fund's annual report to shareholders, which is available upon
request.

<TABLE>
<CAPTION>



                                                           Class A                                     Class B
                                   -----------------------------------------------     --------------------------------------------
                                                For the Year Ended July 31,                 For the Year Ended July 31,
                                   -----------------------------------------------     --------------------------------------------
  Increase (Decrease) in
  Net Asset Value:                      1999      1998      1997     1996     1995     1999     1998     1997      1996      1995
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                    <C>       <C>       <C>      <C>      <C>      <C>      <C>      <C>       <C>       <C>
  Per Share Operating Performance:
- -----------------------------------------------------------------------------------------------------------------------------------
  Net asset value, beginning
   of year                             $10.88    $10.87    $10.54   $10.46   $10.40   $10.88   $10.87   $10.54    $10.46    $10.40
- -----------------------------------------------------------------------------------------------------------------------------------
  Investment income -- net                .52       .55       .55      .54      .55      .46      .49      .50       .49       .50
- -----------------------------------------------------------------------------------------------------------------------------------
  Realized and unrealized gain
    (loss) on investments -- net         (.24)      .01       .33      .08      .11     (.24)     .01      .33       .08       .11
- -----------------------------------------------------------------------------------------------------------------------------------
  Total from investment operations        .28       .56       .88      .62      .66      .22      .50      .83       .57       .61
- -----------------------------------------------------------------------------------------------------------------------------------
  Less dividends and distributions:
    Investment income -- net             (.52)     (.55)     (.55)    (.54)    (.55)    (.46)    (.49)    (.50)     (.49)     (.50)
    Realized gain on investments -- net    --        --        --       --     (.01)      --       --       --        --      (.01)
    In excess of realized gain on
    investments -- net                   (.11)       --        --       --     (.04)    (.11)      --       --        --      (.04)
- -----------------------------------------------------------------------------------------------------------------------------------
  Total dividends and distributions      (.63)     (.55)     (.55)    (.54)    (.60)    (.57)    (.49)    (.50)     (.49)     (.55)
- -----------------------------------------------------------------------------------------------------------------------------------
  Net asset value, end of year         $10.53    $10.88    $10.87   $10.54   $10.46   $10.53   $10.88   $10.87    $10.54    $10.46
- -----------------------------------------------------------------------------------------------------------------------------------
  Total Investment Return:*
- -----------------------------------------------------------------------------------------------------------------------------------
  Based on net asset value per
    share                                2.52%     5.25%     8.63%    6.04%    6.76%    2.01%    4.71%    8.08%     5.49%     6.22%
- -----------------------------------------------------------------------------------------------------------------------------------
  Ratios to Average Net Assets:
- -----------------------------------------------------------------------------------------------------------------------------------
  Expenses, net of reimbursement          .94%      .82%      .79%     .79%     .80%    1.44%    1.32%    1.30%     1.30%     1.31%
- -----------------------------------------------------------------------------------------------------------------------------------
  Expenses                                .94%      .82%      .79%     .79%     .83%    1.44%    1.32%    1.30%     1.30%     1.33%
- -----------------------------------------------------------------------------------------------------------------------------------
  Investment income -- net               4.77%     5.01%     5.21%    5.09%    5.44%    4.26%    4.50%    4.70%     4.59%     4.92%
- -----------------------------------------------------------------------------------------------------------------------------------
  Supplemental Data:
- -----------------------------------------------------------------------------------------------------------------------------------
  Net assets, end of year
    (in thousands)                    $12,975   $13,875   $14,012  $14,988  $14,893  $42,758  $51,503  $58,282   $66,497   $72,090
- -----------------------------------------------------------------------------------------------------------------------------------
  Portfolio turnover                    25.16%    53.75%    29.68%   36.39%   62.65%   25.16%   53.75%   29.68%    36.39%    62.65%
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>


  *Total investment returns exclude the effects of sales charges.



                   MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND                  27

<PAGE>

[CLIP ART] Management of the Fund

FINANCIAL HIGHLIGHTS (concluded)

<TABLE>
<CAPTION>



                                                      Class C                                          Class D
                                  -------------------------------------------------------------------------------------------------

                                                                          For the                                          For the
                                                                          Period                                           Period
                                           For the Year Ended             October              For the Year Ended          October
                                                 July 31,                21, 1994+                   July 31,             21, 1994+
                                  ------------------------------------      to        ----------------------------------      to
  Increase (Decrease) in                                                  July 31,                                         July 31,
  Net Asset Value:                  1999      1998      1997      1996      1995      1999      1998      1997      1996     1995
- -----------------------------------------------------------------------------------------------------------------------------------
<S>                                <C>      <C>        <C>       <C>       <C>       <C>       <C>       <C>       <C>      <C>
  Per Share Operating Performance:
- -----------------------------------------------------------------------------------------------------------------------------------
  Net asset value, beginning of
    period                         10.88    $10.87     $10.54    $10.46    $10.05    $10.87    $10.86    $10.53    $10.45   $10.05
- -----------------------------------------------------------------------------------------------------------------------------------
  Investment income -- net           .45       .48        .49       .48       .37       .51       .54       .54       .53      .42
- -----------------------------------------------------------------------------------------------------------------------------------
  Realized and unrealized gain
    (loss) on investments -- net    (.25)      .01        .33       .08       .46      (.24)      .01       .33       .08      .45
- -----------------------------------------------------------------------------------------------------------------------------------
  Total from investment operations   .20       .49        .82       .56       .83       .27       .55       .87       .61      .87
- -----------------------------------------------------------------------------------------------------------------------------------
  Less dividends and distributions:
    Investment income -- net        (.45)     (.48)      (.49)     (.48)     (.37)     (.51)     (.54)     (.54)     (.53)    (.42)
    Realized gain on
    investments -- net                --        --         --        --      (.01)       --        --        --        --     (.01)
    In excess of realized gain on
    investments -- net              (.11)       --         --        --      (.04)     (.11)       --        --        --     (.04)
- -----------------------------------------------------------------------------------------------------------------------------------
  Total dividends and
    distributions                   (.56)     (.48)      (.49)     (.48)     (.42)     (.62)     (.54)     (.54)     (.53)    (.47)
- -----------------------------------------------------------------------------------------------------------------------------------
  Net asset value, end of
    period                        $10.52    $10.88     $10.87    $10.54    $10.46    $10.52    $10.87    $10.86    $10.53   $10.45
- -----------------------------------------------------------------------------------------------------------------------------------
  Total Investment Return:**
- -----------------------------------------------------------------------------------------------------------------------------------
  Based on net asset value per
    share                           1.81%     4.61%      7.97%     5.38%     8.53%#    2.42%     5.14%     8.52%     5.93%    8.92%#
- -----------------------------------------------------------------------------------------------------------------------------------
  Ratios to Average Net Assets:
- -----------------------------------------------------------------------------------------------------------------------------------
  Expenses                          1.54%     1.42%      1.40%     1.40%     1.43%*    1.05%      .92%      .89%      .89%     .93%*
- -----------------------------------------------------------------------------------------------------------------------------------
  Investment income -- net          4.16%     4.39%      4.59%     4.49%     4.58%*    4.67%     4.90%     5.11%     5.01%    5.23%*
- -----------------------------------------------------------------------------------------------------------------------------------
  Supplemental Data:
- -----------------------------------------------------------------------------------------------------------------------------------
  Net assets, end of period
     (in thousands)                 $996    $1,233       $957    $1,499      $729    $4,053    $2,740    $2,188    $1,871     $617
- -----------------------------------------------------------------------------------------------------------------------------------
  Portfolio turnover               25.16%    53.75%     29.68%    36.39%    62.65%    25.16%    53.75%    29.68%    36.39%   62.65%
- -----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

+  Commencement of operations.

*  Annualized.

** Total investment returns exclude the effects of sales charges.

#  Aggregate total investment return.




28                 MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND


<PAGE>

                     (This page intentionally left blank.)












                    MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND




<PAGE>

                     (This page intentionally left blank.)













                    MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND





<PAGE>










                        ---------------------------------
                                    POTENTIAL
                                    INVESTORS

                          Open an account (two options)
                        ---------------------------------

            (1)                                             (2)
- ----------------------------                 -----------------------------------
       MERRILL LYNCH                                  TRANSFER AGENT
    FINANCIAL CONSULTANT
    OR SECURITIES DEALER                        Financial Data Services, Inc.

   Advises shareholders on                         ADMINISTRATIVE OFFICES
   their Fund investments.                         ----------------------
- ----------------------------                     4800 Deer Lake Drive East
                                              Jacksonville, Florida 32246-6484

                                                      MAILING ADDRESS
                                                      P.O. Box 45289
                                              Jacksonville, Florida 32232-5289

                                                 Performs recordkeeping and
                                                    reporting services.
                                             -----------------------------------

              ----------------------------------------------------
                                   DISTRIBUTOR

                        Merrill Lynch Funds Distributor,
                 a division of Princeton Funds Distributor, Inc.
                                  P.O. Box 9081
                        Princeton, New Jersey 08543-9081

                      Arranges for the sale of Fund shares.
              ----------------------------------------------------

     ------------------------                        ---------------------------
           COUNSEL               -------------------           CUSTODIAN

      Brown & Wood, LLP              THE FUND             State Street Bank
    One World Trade Center         The Board of           and Trust Company
 New York, New York 10048-0557   Trustees oversees         P.O. Box 351
                                     the Fund.       Boston, Massachusetts 02101
    Provides legal advice       ------------------
       to the Fund.                                        Holds the Fund's
   ------------------------                             assets for safekeeping.
                                                     ---------------------------




- -----------------------------------         ------------------------------------
       INDEPENDENT AUDITORS                               MANAGER

      Deloitte & Touche LLP                      Fund Asset Management, L.P.
        117 Campus Drive
 Princeton, New Jersey 08540-6400                  ADMINISTRATIVE OFFICES
                                                   800 Scudders Mill Road
      Audits the financial                      Plainsboro, New Jersey 08536
statements of the Fund on behalf of
       the shareholders.                              MAILING ADDRESS
- -----------------------------------                    P.O. Box 9011
                                              Princeton, New Jersey 08543-9011

                                                     TELEPHONE NUMBER
                                                      1-800-MER-FUND

                                                    Manages the Fund's
                                                  day-to-day activities.
                                            ------------------------------------








                    MERRILL LYNCH ARIZONA MUNICIPAL BOND FUND




<PAGE>


For More Information [CLIP ART]


Shareholder Reports

Additional information about the Fund's investments is available in the Fund's
annual and semi-annual reports to shareholders. In the Fund's annual report you
will find a discussion of the market conditions and investment strategies that
significantly affected the Fund's performance during its last fiscal year. You
may obtain these reports at no cost by calling 1-800-MER-FUND.

The Fund will send you one copy of each shareholder report and certain other
mailings, regardless of the number of Fund accounts you have. To receive
separate shareholder reports for each account, call your Merrill Lynch Financial
Consultant or write to the Transfer Agent at its mailing address. Include your
name, address, tax identification number and Merrill Lynch brokerage or mutual
fund account number. If you have any questions, please call your Merrill Lynch
Financial Consultant or the Transfer Agent at 1-800-MER-FUND.

Statement of Additional Information

The Fund's Statement of Additional Information contains further information
about the Fund and is incorporated by reference (legally considered to be part
of this prospectus). You may request a free copy by writing the Fund at
Financial Data Services, Inc., P.O. Box 45289, Jacksonville, Florida 32232-5289
or by calling 1-800-MER-FUND.

Contact your Merrill Lynch Financial Consultant or the Fund at the telephone
number or address indicated above if you have any questions.

Information about the Fund (including the Statement of Additional Information)
can be reviewed and copied at the SEC's Public Reference Room in Washington,
D.C. Call 1-800-SEC-0330 for information on the operation of the public
reference room. This information is also available on the SEC's Internet site at
http://www.sec.gov and copies may be obtained upon payment of a duplicating fee
by writing the Public Reference Section of the SEC, Washington, D.C. 20549-6009.


You should rely only on the information contained in this Prospectus. No one is
authorized to provide you with information that is different from information
contained in this Prospectus.


Investment Company Act file #811-4375
Code #13974-11-99
(C)Fund Asset Management, L.P.


                                                           [LOGO] Merrill Lynch

PROSPECTUS

Merrill Lynch Arizona
Municipal Bond Fund
of Merrill Lynch Multi-State
Municipal Series Trust




November 29, 1999


<PAGE>




                      STATEMENT OF ADDITIONAL INFORMATION






                    Merrill Lynch Arizona Municipal Bond Fund
               of Merrill Lynch Multi-State Municipal Series Trust

   P.O. Box 9011, Princeton, New Jersey 08543-9011 o Phone No. (609) 282-2800

     Merrill  Lynch  Arizona  Municipal  Bond Fund (the  "Fund")  is a series of
Merrill Lynch  Multi-State  Municipal  Series Trust (the  "Trust"),  an open-end
investment  company organized as a Massachusetts  business trust. The investment
objective of the Fund is to provide shareholders with income exempt from Federal
and Arizona income taxes. The Fund invests primarily in a portfolio of long-term
investment grade obligations issued by or on behalf of the State of Arizona, its
political subdivisions,  agencies and instrumentalities and obligations of other
qualifying  issuers,  such as issuers  located in Puerto Rico,  the U.S.  Virgin
Islands and Guam,  that pay interest  exempt,  in the opinion of bond counsel to
the issuer,  from Federal and Arizona  income  taxes.  There can be no assurance
that the investment objective of the Fund will be realized. For more information
on the Fund's investment objective and policies,  see "Investment  Objective and
Policies."

     Pursuant to the Merrill Lynch Select Pricing(SM) System, the Fund offers
four classes of shares, each with a different combination of sales charges,
ongoing fees and other features. The Merrill Lynch Select Pricing(SM) System
permits an investor to choose the method of purchasing shares that the investor
believes is most beneficial given the amount of the purchase, the length of time
the investor expects to hold the shares and other relevant circumstances. See
"Purchase of Shares."


                                 --------------


     This  Statement of Additional  Information  of the Fund is not a prospectus
and  should  be read in  conjunction  with the  Prospectus  of the  Fund,  dated
November 29, 1999 (the  "Prospectus"),  which has been filed with the Securities
and Exchange Commission (the "Commission") and can be obtained,  without charge,
by calling  (800)  MER-FUND  or by writing  the Fund at the above  address.  The
Prospectus  is  incorporated  by reference  into this  Statement  of  Additional
Information,  and this Statement of Additional  Information is  incorporated  by
reference  into the  Prospectus.  The Fund's  audited  financial  statements are
incorporated  in this  Statement of Additional  Information  by reference to its
1999 annual report to shareholders.  You may request a copy of the annual report
at no charge by calling (800)  456-4587 ext. 789 between 8:00 a.m. and 8:00 p.m.
on any business day.

                                 --------------

                        Fund Asset Management -- Manager
                 Merrill Lynch Funds Distributor -- Distributor

                                 --------------

   The date of this Statement of Additional Information is November 29, 1999.


<PAGE>

                                TABLE OF CONTENTS
                                                                          Page
                                                                          ----

Investment Objective and Policies .......................................    2
   Risk Factors and Special Considerations Relating to
     Municipal Bonds ....................................................    3
   Description of Municipal Bonds .......................................    3
   Financial Futures Transactions and Options ...........................    7
   Description of Temporary Investments .................................   10
   Investment Restrictions ..............................................   12
   Portfolio Turnover ...................................................   14
Management of the Trust .................................................   14
   Trustees and Officers ................................................   14
   Compensation of Trustees .............................................   15
   Management and Advisory Arrangements .................................   16
   Code of Ethics .......................................................   17
Purchase of Shares ......................................................   17
   Initial Sales Charge Alternatives-- Class A and Class D Shares .......   18
   Reduced Initial Sales Charges ........................................   19
   Deferred Sales Charge Alternatives-- Class B and Class C Shares ......   22
   Distribution Plans ...................................................   24
   Limitations on the Payment of Deferred Sales Charges .................   25
Redemption of Shares ....................................................   26
   Redemption ...........................................................   27
   Repurchase ...........................................................   27
   Reinstatement Privilege-- Class A and Class D Shares .................   28
Pricing of Shares .......................................................   28
   Determination of Net Asset Value .....................................   28
   Computation of Offering Price Per Share ..............................   29
Portfolio Transactions ..................................................   29
   Transactions in Portfolio Securities .................................   29
Shareholder Services ....................................................   30
   Investment Accounts ..................................................   31
   Exchange Privilege ...................................................   31
   Fee-Based Programs ...................................................   33
   Automatic Investment Plans ...........................................   33
   Automatic Dividend Reinvestment Plan .................................   33
   Systematic Withdrawal Plan ...........................................   34
Dividends and Taxes .....................................................   35
   Dividends ............................................................   35
   Taxes ................................................................   35
   Tax Treatment of Options and Futures Transactions ....................   37
Performance Data ........................................................   38
General Information .....................................................   40
   Description of Shares ................................................   40
   Independent Auditors .................................................   41
   Custodian ............................................................   41
   Transfer Agent .......................................................   42
   Legal Counsel ........................................................   42
   Reports to Shareholders ..............................................   42
   Shareholders Inquiries ...............................................   42
   Additional Information ...............................................   42
Financial Statements ....................................................   43
Appendix I -- Economic and Financial Conditions in Arizona ..............   I-1
Appendix II -- Ratings of Municipal Bonds ...............................  II-1


<PAGE>


                       INVESTMENT OBJECTIVE AND POLICIES

     The investment objective of the Fund is to provide shareholders with income
exempt  from  Federal and Arizona  income  taxes.  The Fund seeks to achieve its
objective by investing  primarily in a portfolio of long-term  investment  grade
obligations  issued  by or on  behalf of the  State of  Arizona,  its  political
subdivisions, agencies and instrumentalities and obligations of other qualifying
issuers,  such as issuers  located in Puerto Rico,  the U.S.  Virgin Islands and
Guam, which pay interest  exempt,  in the opinion of bond counsel to the issuer,
from Federal and Arizona  income taxes.  Obligations  exempt from Federal income
taxes are referred to herein as "Municipal  Bonds," and obligations  exempt from
Federal and Arizona income taxes are referred to as "Arizona  Municipal  Bonds."
Unless  otherwise  indicated,  references to Municipal  Bonds shall be deemed to
include Arizona  Municipal Bonds.  The investment  objective as set forth in the
first sentence of this paragraph is a fundamental  policy and may not be changed
without a vote of a majority of the outstanding shares of the Fund. See "How the
Fund Invests" in the  Prospectus  for a general  discussion of the Fund's goals,
main  investment  strategies  and  main  risks.  The  Fund  is  classified  as a
diversified  fund under the  Investment  Company  Act of 1940,  as amended  (the
"Investment Company Act").


     Under  normal   circumstances,   except  when  acceptable   securities  are
unavailable  as determined  by Fund Asset  Management,  L.P.  (the  "Manager" or
"FAM"),  the Fund's manager,  or for temporary  defensive purposes the Fund will
invest at least 65% of its total assets in Arizona Municipal Bonds. The value of
bonds and other  fixed-income  obligations may fall when interest rates rise and
rise when  interest  rates  fall.  In  general,  bonds  and  other  fixed-income
obligations  with  longer  maturities  will be  subject  to  greater  volatility
resulting from interest rate  fluctuations  than will similar  obligations  with
shorter maturities.  Under normal conditions,  it is generally  anticipated that
the  Fund's  weighted  average  maturity  will be in  excess of ten  years.  For
temporary periods or to provide liquidity,  the Fund has the authority to invest
as much as 35% of its  total  assets  in  tax-exempt  or  taxable  money  market
obligations  with a maturity  of one year or less (such  short-term  obligations
being  referred  to herein as  "Temporary  Investments"),  except  that  taxable
Temporary Investments shall not exceed 20% of the Fund's net assets.

     The Fund may also invest in variable rate demand obligations  ("VRDOs") and
VRDOs in the form of participation interests ("Participating VRDOs") in variable
rate tax-exempt obligations held by a financial institution. See "Description of
Temporary  Investments." The Fund's hedging  strategies,  which are described in
more  detail  under  "Financial  Futures  Transactions  and  Options,"  are  not
fundamental  policies and may be modified by the  Trustees of the Trust  without
the approval of the Fund's shareholders.

     At least 80% of the Fund's total assets will be invested in Municipal Bonds
that are  commonly  referred  to as  "investment  grade"  securities,  which are
obligations  rated at the time of  purchase  within  the  four  highest  quality
ratings as determined by either  Moody's  Investors  Service,  Inc.  ("Moody's")
(currently Aaa, Aa, A and Baa),  Standard & Poor's ("S&P") (currently AAA, AA, A
and BBB) or Fitch  IBCA,  Inc.  ("Fitch")  (currently  AAA,  AA, A and BBB).  If
unrated,  such  securities  will  possess  creditworthiness  comparable,  in the
opinion  of the  Manager,  to other  obligations  in which the Fund may  invest.
Securities  rated  in  the  lowest  investment  grade  rating  category  may  be
considered to have speculative characteristics.


     The Fund may invest up to 20% of its total assets in  Municipal  Bonds that
are rated  below Baa by  Moody's  or below BBB by S&P or Fitch or which,  in the
Manager's  judgment,  possess similar credit  characteristics.  Such securities,
sometimes  referred  to as "high  yield"  or  "junk"  bonds,  are  predominantly
speculative  with respect to the capacity to pay interest and repay principal in
accordance  with the  terms of the  security  and  generally  involve  a greater
volatility  of  price  than   securities  in  higher  rating   categories.   See
"Description  of Municipal Bonds -- `High Yield' or `Junk' Bonds." The Fund does
not intend to purchase debt  securities that are in default or which the Manager
believes will be in default.

     Certain  Municipal  Bonds may be  entitled  to the  benefits  of letters of
credit or similar credit enhancements issued by financial institutions.  In such
instances,  the Trustees and the Manager will take into account in assessing the
quality of such bonds not only the  creditworthiness of the issuer of such bonds
but also the  creditworthiness  of the financial  institution  that provides the
credit enhancement.

     The Fund ordinarily does not intend to realize investment income not exempt
from Federal  income tax and Arizona income taxes.  However,  to the extent that
suitable  Arizona  Municipal Bonds are not available for investment by the Fund,
the Fund may purchase Municipal Bonds issued by other states, their agencies and
instrumentalities,  the  interest  income on which is exempt,  in the opinion of
bond  counsel to the issuer,  from Federal  income tax,  but not Arizona  income
taxation. The Fund also may invest in securities not issued by or on behalf of a
state or  territory  or by an agency  or  instrumentality  thereof,  if the Fund
nevertheless  believes such


                                       2
<PAGE>



securities to be exempt from Federal income taxation ("Non-Municipal  Tax-Exempt
Securities").   Non-Municipal   Tax-Exempt   Securities   could   include  trust
certificates or other instruments  evidencing  interest in one or more long-term
Arizona Municipal Bonds or Municipal Bonds.  Non-Municipal Tax-Exempt Securities
also may include securities issued by other investment  companies that invest in
Arizona  Municipal Bonds or Municipal  Bonds, to the extent such investments are
permitted  by the  Investment  Company  Act.  Certain  Non-Municipal  Tax-Exempt
Securities may be characterized as derivative  instruments.  For purposes of the
Fund's investment objective and policies,  Non-Municipal  Tax-Exempt  Securities
that pay  interest  that is exempt from  Federal  income tax will be  considered
"Municipal Bonds" and Non-Municipal Tax-Exempt Securities that pay interest that
is exempt  from  Federal  income tax and Arizona  income tax will be  considered
"Arkansas  Municipal Bonds." The Fund at all times will have at least 80% of its
net assets  invested in securities  the interest on which is exempt from Federal
taxation.  However, interest received on certain otherwise tax-exempt securities
that are classified as "private activity bonds" (in general,  bonds that benefit
non-governmental  entities) may be subject to a Federal alternative minimum tax.
The percentage of the Fund's total assets  invested in "private  activity bonds"
will vary  during the year.  Federal tax  legislation  has limited the types and
volume  of bonds the  interest  on which  qualifies  for a  Federal  income  tax
exemption.  As a result, this legislation and legislation that may be enacted in
the future may affect the  availability of Municipal Bonds for investment by the
Fund. See "Dividends and Taxes -- Taxes."

Risk Factors and Special Considerations Relating to Municipal Bonds

     The risks and special  considerations  involved in  investment in Municipal
Bonds  vary  with the  types  of  instruments  being  acquired.  Investments  in
Non-Municipal  Tax-Exempt Securities may present similar risks, depending on the
particular  product.  Certain  instruments  in which the Fund may  invest may be
characterized as derivative instruments.  See "Investment Objective and Policies
- -- Description of Municipal Bonds" and " -- Financial  Futures  Transactions and
Options."

     The Fund  ordinarily  will  invest  at least 65% of its  assets in  Arizona
Municipal Bonds, and therefore it is more exposed to factors adversely affecting
issuers of Arizona  Municipal  Bonds than is a  municipal  bond fund that is not
concentrated in issuers of Arizona Municipal Bonds to this degree.

     The  Manager  does not  believe  that the current  economic  conditions  in
Arizona will have a significant  adverse  effect on the Fund's ability to invest
in high quality Arizona  Municipal  Bonds.  Because the Fund's portfolio will be
comprised  primarily of investment grade securities,  the Fund is expected to be
less subject to market and credit  risks than a fund that  invests  primarily in
lower quality Arizona  Municipal  Bonds.  For a discussion of economic and other
conditions  in the State of Arizona,  see Appendix I -- "Economic  and Financial
Conditions in Arizona."

     The value of Municipal Bonds generally may be affected by  uncertainties in
the municipal  markets as a result of  legislation  or  litigation  changing the
taxation of Municipal Bonds or the rights of Municipal Bond holders in the event
of a bankruptcy.  Municipal  bankruptcies are rare and certain provisions of the
U.S.  Bankruptcy  Code governing such  bankruptcies  are unclear.  Further,  the
application of state law to Municipal Bond issuers could produce varying results
among  the  states  or among  Municipal  Bond  issuers  within  a  state.  These
uncertainties  could have a  significant  impact on the prices of the  Municipal
Bonds or the Arizona Municipal Bonds in which the Fund invests.

Description of Municipal Bonds

     Set  forth  below is a  detailed  description  of the  Municipal  Bonds and
Temporary Investments in which the Fund may invest.  Information with respect to
ratings  assigned to  tax-exempt  obligations  that the Fund may purchase is set
forth in Appendix II to this Statement of Additional Information.


     Municipal Bonds include debt obligations issued to obtain funds for various
public  purposes,   including  the  construction  of  a  wide  range  of  public
facilities, refunding of outstanding obligations and obtaining funds for general
operating  expenses and loans to other public  institutions  and facilities.  In
addition,  certain  types  of  bonds  are  issued  by or  on  behalf  of  public
authorities to finance various privately owned or operated facilities, including
certain  facilities for the local  furnishing of electric  energy or gas, sewage
facilities,  solid waste disposal  facilities and other specialized  facilities.
Such  obligations  are included  within the term Municipal Bonds if the interest
paid thereon is excluded from gross income for Federal  income tax purposes and,
in the case of Arizona Municipal


                                       3
<PAGE>


Bonds,  exempt from Arizona income taxes. Other types of industrial  development
bonds  or  private  activity  bonds,  the  proceeds  of  which  are used for the
construction,  equipment or  improvement  of privately  operated  industrial  or
commercial  facilities,  may constitute  Municipal  Bonds,  although the current
Federal tax laws place substantial  limitations on the size of such issues.  The
interest on Municipal Bonds may bear a fixed rate or be payable at a variable or
floating rate. The two principal classifications of Municipal Bonds are "general
obligation"  and "revenue"  bonds,  which latter  category  includes  industrial
development bonds ("IDBs") and, for bonds issued after August 15, 1986,  private
activity bonds.

     General  Obligation  Bonds.  General  obligation  bonds are  secured by the
issuer's  pledge of its  faith,  credit  and  taxing  power for the  payment  of
principal  and  interest.  The taxing  power of any  governmental  entity may be
limited,  however,  by  provisions  of its state  constitution  or laws,  and an
entity's  creditworthiness  will  depend on many  factors,  including  potential
erosion of its tax base due to population declines, natural disasters,  declines
in the state's industrial base or inability to attract new industries,  economic
limits on the ability to tax without  eroding  the tax base,  state  legislative
proposals or voter  initiatives  to limit ad valorem real property taxes and the
extent to which the entity  relies on  Federal  or state aid,  access to capital
markets or other factors  beyond the state's or entity's  control.  Accordingly,
the capacity of the issuer of a general obligation bond as to the timely payment
of interest and the repayment of principal  when due is affected by the issuer's
maintenance  of its tax  base.  The  State of  Arizona  does not  issue  general
obligation  bonds;  it may issue only revenue bonds,  described  below.  General
obligation bonds may, however, be issued by counties,  municipalities and, under
certain limited circumstances, school districts in Arizona.

     Revenue  Bonds.  Revenue  bonds are payable only from the revenues  derived
from a particular  facility or class of facilities  or, in some cases,  from the
proceeds  of a special  excise  tax or other  specific  revenue  source  such as
payments from the user of the facility being  financed;  accordingly  the timely
payment of interest and the repayment of principal in accordance  with the terms
of the  revenue  or  special  obligation  bond  is a  function  of the  economic
viability of such facility or such revenue source.

     IDBs and Private  Activity  Bonds.  The Fund may purchase  IDBs and private
activity bonds.  IDBs and private activity bonds are, in most cases,  tax-exempt
securities  issued by states,  municipalities  or public  authorities to provide
funds, usually through a loan or lease arrangement,  to a private entity for the
purpose of financing construction or improvement of a facility to be used by the
entity.  Such  bonds  are  secured  primarily  by  revenues  derived  from  loan
repayments  or  lease  payments  due  from the  entity  which  may or may not be
guaranteed by a parent company or otherwise  secured.  IDBs and private activity
bonds generally are not secured by a pledge of the taxing power of the issuer of
such bonds.  Therefore, an investor should be aware that repayment of such bonds
generally  depends on the revenues of a private entity and be aware of the risks
that such an investment may entail.  Continued  ability of an entity to generate
sufficient revenues for the payment of principal and interest on such bonds will
be affected by many factors including the size of the entity, capital structure,
demand for its products or services,  competition,  general economic conditions,
government  regulation and the entity's dependence on revenues for the operation
of the particular facility being financed.

     "Moral  Obligation"  Bonds. The Fund also may invest in "moral  obligation"
bonds,  which are normally issued by special purpose public  authorities.  If an
issuer  of  moral  obligation  bonds is  unable  to meet  its  obligations,  the
repayment of such bonds becomes a moral commitment but not a legal obligation of
the state or municipality in question.

     Municipal   Notes.   Municipal   notes  are  shorter  term  municipal  debt
obligations.   They  may  provide  interim  financing  in  anticipation  of  tax
collection,  bond  sales or revenue  receipts.  If there is a  shortfall  in the
anticipated  proceeds,  the note may not be fully  repaid  and the Fund may lose
money.

     Municipal Commercial Paper. Municipal commercial paper is generally
unsecured and issued to meet short-term financing needs. The lack of security
presents some risk of loss to the Fund.

     Municipal Lease  Obligations.  Also included within the general category of
Municipal Bonds are participation  certificates issued by government authorities
or entities to finance the acquisition or construction of equipment, land and/or
facilities. The certificates represent participations in a lease, an installment
purchase  contract or a conditional  sales  contract  (hereinafter  collectively
called "lease  obligations")  relating to such  equipment,  land or  facilities.
Although lease obligations do not constitute  general  obligations of the issuer
for


                                       4
<PAGE>



which the issuer's  unlimited  taxing power is pledged,  a lease  obligation  is
frequently backed by the issuer's  covenant to budget for,  appropriate and make
the payments due under the lease obligation.  However, certain lease obligations
contain  "non-appropriation"  clauses  which  provide  that  the  issuer  has no
obligation to make lease or installment purchase payments in future years unless
money  is   appropriated   for  such  purpose  on  a  yearly   basis.   Although
"non-appropriation"  lease  obligations  are  secured  by the  leased  property,
disposition of the property in the event of foreclosure  might prove  difficult.
These  securities  represent a type of financing  that has not yet developed the
depth of marketability  associated with more  conventional  securities.  Certain
investments  in lease  obligations  may be illiquid.  The Fund may not invest in
illiquid lease obligations if such investments, together with all other illiquid
investments,  would exceed 15% of the Fund's net assets.  The Fund may, however,
invest without regard to such limitation in lease obligations which the Manager,
pursuant to  guidelines  which have been  adopted by the Board of  Trustees  and
subject to the  supervision of the Board,  determines to be liquid.  The Manager
will deem lease  obligations to be liquid if they are publicly  offered and have
received  an  investment  grade  rating of Baa or better by  Moody's,  or BBB or
better  by S&P or  Fitch.  Unrated  lease  obligations,  or  those  rated  below
investment  grade,  will be  considered  liquid if the  obligations  come to the
market  through an  underwritten  public  offering  and at least two dealers are
willing to give competitive bids. In reference to the latter,  the Manager must,
among other things, also review the  creditworthiness of the entity obligated to
make  payment   under  the  lease   obligation   and  make   certain   specified
determinations  based on such  factors  as the  existence  of a rating or credit
enhancement  such as  insurance,  the  frequency  of trades  or  quotes  for the
obligation and the  willingness  of dealers to make a market in the  obligation.

     Indexed and Inverse  Floating  Obligations.  The Fund may invest in Arizona
Municipal Bonds and Municipal Bonds (and  Non-Municipal  Tax-Exempt  Securities)
yielding a return based on a particular  index of value or interest  rates.  For
example, the Fund may invest in Arizona Municipal Bonds and Municipal Bonds that
pay interest based on an index of Municipal Bond interest  rates.  The principal
amount payable upon maturity of certain  Arizona  Municipal  Bonds and Municipal
Bonds  also may be  based on the  value of the  index.  To the  extent  the Fund
invests in these types of  Municipal  Bonds,  the Fund's  return on such Arizona
Municipal  Bonds and Municipal Bonds will be subject to risk with respect to the
value of the particular  index.  Interest and principal payable on the Municipal
Bonds may also be based on relative changes among particular indices.  Also, the
Fund may  invest  in  so-called  "inverse  floating  obligations"  or  "residual
interest  bonds" on which the interest  rates vary  inversely  with a short-term
floating rate (which may be reset periodically by a dutch auction, a remarketing
agent, or by reference to a short-term tax-exempt interest rate index). The Fund
may purchase  synthetically-created  inverse  floating  rate bonds  evidenced by
custodial or trust receipts.  Generally,  income on inverse  floating rate bonds
will decrease when short-term  interest rates  increase,  and will increase when
short-term interest rates decrease. Such securities have the effect of providing
a degree of investment leverage, since they may increase or decrease in value in
response to changes,  as an  illustration,  in market  interest  rates at a rate
which is a multiple  (typically two) of the rate at which  fixed-rate  long-term
tax-exempt  securities  increase or decrease in response to such  changes.  As a
result,  the market values of such  securities  will  generally be more volatile
than the market values of fixed-rate tax-exempt securities. To seek to limit the
volatility  of  these  securities,   the  Fund  may  purchase  inverse  floating
obligations  with  shorter-term  maturities or which contain  limitations on the
extent  to  which  the  interest  rate may  vary.  Certain  investments  in such
obligations  may  be  illiquid.  The  Fund  may  not  invest  in  such  illiquid
obligations if such investments, together with other illiquid investments, would
exceed 15% of the Fund's net assets. The Manager, however, believes that indexed
and  inverse  floating  obligations   represent  flexible  portfolio  management
instruments  for the Fund  which  allow  the Fund to seek  potential  investment
rewards,  hedge  other  portfolio  positions  or vary the  degree of  investment
leverage relatively efficiently under different market conditions.


     When  Issued   Securities,   Delayed  Delivery   Transactions  and  Forward
Commitments.  The Fund may  purchase or sell  securities  that it is entitled to
receive on a when issued basis.  TheFund may also purchase or sell securities on
a delayed delivery basis.The Fund may also purchase or sell securities through a
forward  commitment.   These  transactions  involve  the  purchase  or  sale  of
securities by the Fund at an established  price with payment and delivery taking
place in the future.The  Fund enters into these  transactions  to obtain what is
considered  an  advantageous  price to the Fund at the time of entering into the
transaction.The  Fund has not  established  any limit on the  percentage  of its
assets that may be committed in  connection  with these  transactions.  When the
Fund purchases  securities in these  transactions,  the Fund  segregates  liquid
securities in an amount equal to the amount of its purchase  commitments.


     There can be no assurance that a security  purchased on a when issued basis
will be issued or that a security purchased or sold through a forward commitment
will be delivered. The value of securities in these transactions



                                       5
<PAGE>

on the delivery date may be more or less than the Fund's purchase price.The Fund
may  bear  the  risk  of a  decline  in the  value  of  the  security  in  these
transactions  and may not  benefit  from an  appreciation  in the  value  of the
security during the commitment period.


     Call and  Redemption  Risk. The Fund may purchase a Municipal Bond issuer's
right to call all or a portion of such Municipal  Bond for mandatory  tender for
purchase (a "Call  Right").  A holder of a Call Right may exercise such right to
require a mandatory tender for the purchase of related Municipal Bonds,  subject
to certain  conditions.  A Call Right that is not exercised prior to maturity of
the related  Municipal Bond will expire without  value.  The economic  effect of
holding  both the Call Right and the  related  Municipal  Bond is  identical  to
holding a Municipal Bond as a non-callable security. Certain investments in such
obligations  may  be  illiquid.  The  Fund  may  not  invest  in  such  illiquid
obligations if such investments, together with other illiquid investments, would
exceed 15% of the Fund's net assets.


     "High  Yield" or "Junk"  Bonds.  The Fund may invest up to 20% of its total
assets in  Municipal  Bonds that are rated  below Baa by Moody's or below BBB by
S&P or Fitch  or  which,  in the  Manager's  judgment,  possess  similar  credit
characteristics.  See Appendix II -- "Ratings of Municipal Bonds" for additional
information regarding ratings of debt securities. Junk bonds are debt securities
that are rated  below  investment  grade by the  major  rating  agencies  or are
unrated  securities  that Fund  management  believes are of comparable  quality.
Although junk bonds generally pay higher rates of interest than investment grade
bonds, they are high risk investments that may cause income and principal losses
for the Fund.The major risks in junk bond investments include the following:

     Junk bonds may be issued by less creditworthy  companies.  These securities
are  vulnerable  to adverse  changes  in the  issuer's  industry  and to general
economic conditions.  Issuers of junk bonds may be unable to meet their interest
or  principal  payment  obligations  because of an economic  downturn,  specific
issuer developments or the unavailability of additional financing.

     The  issuers of junk  bonds may have a larger  amount of  outstanding  debt
relative to their assets than issuers of investment  grade bonds.  If the issuer
experiences financial stress, it may be unable to meet its debt obligations. The
issuer's  ability to pay its debt  obligations  also may be lessened by specific
issuer developments, or the unavailability of additional financing.

     Junk bonds are frequently  ranked junior to claims by other  creditors.  If
the issuer cannot meet its  obligations,  the senior  obligations  are generally
paid off before the junior obligations.

     Junk bonds  frequently  have  redemption  features that permit an issuer to
repurchase  the security from the Fund before it matures.  If an issuer  redeems
the junk  bonds,  the Fund may have to invest the  proceeds  in bonds with lower
yields and may lose income.

     Prices of junk bonds are subject to extreme  price  fluctuations.  Negative
economic developments may have a greater impact on the prices of junk bonds than
on other higher rated fixed income securities.

     Junk bonds may be less  liquid than higher  rated fixed  income  securities
even under normal economic conditions.  There are fewer dealers in the junk bond
market,  and there may be significant  differences in the prices quoted for junk
bonds by the dealers.  Because they are less liquid, judgment may play a greater
role in valuing certain of the Fund's  portfolio  securities than in the case of
securities trading in a more liquid market.

     The Fund may incur  expenses to the extent  necessary to seek recovery upon
default or to negotiate new terms with a defaulting issuer.

     Yields.  Yields on Municipal  Bonds are  dependent on a variety of factors,
including the general  condition of the money market and of the  municipal  bond
market,  the size of a  particular  offering,  the  financial  condition  of the
issuer,  the maturity of the obligation and the rating of the issue. The ability
of the  Fund to  achieve  its  investment  objective  is also  dependent  on the
continuing ability of the issuers of the securities in which the Fund invests to
meet their obligations for the payment of interest and principal when due. There
are variations in the risks involved in holding  Municipal Bonds,  both within a
particular  classification  and between  classifications,  depending on numerous
factors.   Furthermore,  the  rights  of  owners  of  Municipal  Bonds  and  the
obligations of the


                                       6
<PAGE>

issuer  of  such  Municipal  Bonds  may be  subject  to  applicable  bankruptcy,
insolvency  and  similar  laws and  court  decisions  affecting  the  rights  of
creditors  generally and to general  equitable  principles,  which may limit the
enforcement of certain remedies.

Financial Futures Transactions and Options

     The Fund may hedge all or a portion of its  portfolio  investments  against
fluctuations in interest rates through the use of options and certain  financial
futures  contracts  and  options  thereon.  While  the  Fund's  use  of  hedging
strategies  is intended to reduce the  volatility  of the net asset value of the
Fund's shares,  the net asset value of the Fund's shares will  fluctuate.  There
can be no assurance  that the Fund's  hedging  transactions  will be  effective.
Furthermore,  the Fund may only engage in hedging  activities  from time to time
and may not  necessarily  be engaging in hedging  activities  when  movements in
interest  rates  occur.  The  Fund  has no  obligation  to  enter  into  hedging
transactions and may choose not to do so.

     The Fund is  authorized  to  purchase  and  sell  certain  exchange  traded
financial  futures  contracts  ("financial  futures  contracts")  solely for the
purpose of hedging its investments in Municipal Bonds against  declines in value
and to hedge against increases in the cost of securities it intends to purchase.
However, any transactions involving financial futures or options (including puts
and calls associated therewith) will be in accordance with the Fund's investment
policies and limitations. A financial futures contract obligates the seller of a
contract to deliver and the purchaser of a contract to take delivery of the type
of financial  instrument covered by the contract,  or in the case of index-based
futures  contracts to make and accept a cash  settlement,  at a specific  future
time  for a  specified  price.  To  hedge  its  portfolio,  the Fund may take an
investment  position  in a futures  contract  which  will  move in the  opposite
direction from the portfolio  position being hedged. A sale of financial futures
contracts  may  provide  a hedge  against a  decline  in the value of  portfolio
securities  because such  depreciation may be offset, in whole or in part, by an
increase in the value of the  position in the  financial  futures  contracts.  A
purchase of financial  futures contracts may provide a hedge against an increase
in the cost of securities intended to be purchased because such appreciation may
be offset,  in whole or in part,  by an increase in the value of the position in
the futures contracts.


     Distributions,  if  any,  of  net  long-term  capital  gains  from  certain
transactions in futures or options are taxable at long-term  capital gains rates
for  Federal  income  tax  purposes,  regardless  of  the  length  of  time  the
shareholder  has owned Fund shares.  See "Dividends and Taxes -- Taxes" and " --
Tax Treatment of Options and Futures Transactions."


     Futures  Contracts.  A futures contract is an agreement between two parties
to buy and sell a security or, in the case of an index-based  futures  contract,
to make and  accept a cash  settlement  for a set  price  on a  future  date.  A
majority of transactions  in futures  contracts,  however,  do not result in the
actual delivery of the underlying instrument or cash settlement, but are settled
through liquidation, (i.e., by entering into an offsetting transaction.  Futures
contracts  have been  designed  by boards of trade  which  have been  designated
"contracts markets" by the Commodity Futures Trading Commission ("CFTC")).

     The  purchase or sale of a futures  contract  differs  from the purchase or
sale of a security in that no price or premium is paid or received.  Instead, an
amount of cash or securities  acceptable to the broker and the relevant contract
market,  which varies, but is generally about 5% of the contract amount, must be
deposited  with  the  broker.  This  amount  is known as  "initial  margin"  and
represents a "good faith" deposit assuring the performance of both the purchaser
and seller  under the  futures  contract.  Subsequent  payments  to and from the
broker,  called "variation  margin," are required to be made on a daily basis as
the price of the futures contract fluctuates making the long and short positions
in the futures  contract more or less  valuable,  a process known as "marking to
the market." At any time prior to the settlement  date of the futures  contract,
the position may be closed out by taking an opposite  position that will operate
to terminate  the position in the futures  contract.  A final  determination  of
variation  margin is then made,  additional  cash is  required  to be paid to or
released by the broker and the purchaser realizes a loss or gain. In addition, a
nominal commission is paid on each completed sale transaction.

     The  Fund  deals  in  financial  futures  contracts  based  on a  long-term
municipal  bond index  developed by the Chicago  Board of Trade  ("CBT") and The
Bond Buyer (the "Municipal  Bond Index").  The Municipal Bond Index is comprised
of 40  tax-exempt  municipal  revenue and general  obligation  bonds.  Each bond
included in the Municipal Bond Index must be rated A or higher by Moody's or S&P
and must have a remaining maturity of 19 years or more. Twice a month new issues
satisfying the eligibility requirements are added to, and an equal number


                                       7
<PAGE>

of old issues are deleted  from,  the  Municipal  Bond  Index.  The value of the
Municipal Bond Index is computed daily according to a formula based on the price
of each bond in the Municipal Bond Index,  as evaluated by six  dealer-to-dealer
brokers.

     The Municipal  Bond Index futures  contract is traded only on the CBT. Like
other contract  markets,  the CBT assures  performance  under futures  contracts
through a clearing corporation, a nonprofit organization managed by the exchange
membership  which is also  responsible for handling daily accounting of deposits
or withdrawals of margin.


     The  Fund  may  purchase  and  sell  financial  futures  contracts  on U.S.
Government  securities as a hedge against  adverse  changes in interest rates as
described below. With respect to U.S. Government securities, currently there are
financial  futures  contracts based on long-term U.S.  Treasury bonds,  Treasury
notes,  Government  National  Mortgage  Association  ("GNMA")  Certificates  and
three-month  U.S.  Treasury bills.  The Fund may purchase and write call and put
options on futures contracts on U.S. Government securities and purchase and sell
Municipal  Bond  Index  futures   contracts  in  connection   with  its  hedging
strategies.


     Subject to policies  adopted by the  Trustees,  the Fund also may engage in
other  futures  contracts  transactions  such  as  futures  contracts  on  other
municipal bond indices that may become available if the Manager and the Trustees
of the Trust should  determine  that there is normally a sufficient  correlation
between the prices of such futures  contracts and the  Municipal  Bonds in which
the Fund invests to make such hedging appropriate.

     Futures  Strategies.  The Fund may sell a financial futures contract (i.e.,
assume a short  position)  in  anticipation  of a  decline  in the  value of its
investments in Municipal  Bonds  resulting from an increase in interest rates or
otherwise.  The risk of decline could be reduced without  employing futures as a
hedge by selling such  Municipal  Bonds and either  reinvesting  the proceeds in
securities with shorter  maturities or by holding assets in cash. This strategy,
however,  entails increased  transaction costs in the form of dealer spreads and
typically would reduce the average yield of the Fund's portfolio securities as a
result of the shortening of maturities.  The sale of futures contracts  provides
an alternative means of hedging against declines in the value of its investments
in Municipal Bonds. As such values decline, the value of the Fund's positions in
the futures contracts will tend to increase, thus offsetting all or a portion of
the  depreciation in the market value of the Fund's  Municipal Bond  investments
that are being hedged.  While the Fund will incur commission expenses in selling
and closing out futures positions, commissions on futures transactions are lower
than transaction  costs incurred in the purchase and sale of Municipal Bonds. In
addition,  the  ability  of the  Fund to  trade  in the  standardized  contracts
available in the futures markets may offer a more effective  defensive  position
than a program to reduce the average maturity of the portfolio securities due to
the unique and varied credit and technical characteristics of the municipal debt
instruments  available to the Fund. Employing futures as a hedge also may permit
the  Fund to  assume a  defensive  posture  without  reducing  the  yield on its
investments beyond any amounts required to engage in futures trading.

     When the Fund intends to purchase  Municipal  Bonds,  the Fund may purchase
futures  contracts as a hedge against any increase in the cost of such Municipal
Bonds  resulting from a decrease in interest rates or otherwise,  that may occur
before such purchases can be effected. Subject to the degree correlation between
the Municipal Bonds and the futures contracts,  subsequent increases in the cost
of  Municipal  Bonds should be reflected in the value of the futures held by the
Fund. As such purchases are made, an equivalent amount of futures contracts will
be closed out. Due to changing  market  conditions and interest rate  forecasts,
however, a futures position may be terminated  without a corresponding  purchase
of portfolio securities.

     Call  Options on Futures  Contracts.  The Fund may also  purchase  and sell
exchange  traded call and put options on  financial  futures  contracts  on U.S.
Government  securities.  The purchase of a call option on a futures  contract is
analogous to the purchase of a call option on an individual security.  Depending
on the pricing of the option compared to either the futures  contract upon which
it is based or the price of the underlying debt securities, it may or may not be
less risky than ownership of the futures contract or underlying debt securities.
Like the purchase of a futures contract, the Fund will purchase a call option on
a futures  contract to hedge against a market advance when the Fund is not fully
invested.

     The writing of a call option on a futures  contract  constitutes  a partial
hedge against  declining  prices of the securities  which are  deliverable  upon
exercise of the futures  contract.  If the futures  price at expiration is below
the exercise  price,  the Fund will retain the full amount of the option premium
which provides a partial hedge against any decline that may have occurred in the
Fund's portfolio holdings.


                                       8
<PAGE>

     Put Options on Futures Contracts. The purchase of a put option on a futures
contract is analogous  to the  purchase of a protective  put option on portfolio
securities.  The Fund will purchase a put option on a futures  contract to hedge
the Fund's portfolio against the risk of rising interest rates.

     The  writing of a put option on a futures  contract  constitutes  a partial
hedge against  increasing  prices of the securities  which are deliverable  upon
exercise of the futures  contract.  If the futures price at expiration is higher
than the  exercise  price,  the Fund will  retain the full  amount of the option
premium  which  provides a partial  hedge  against any  increase in the price of
Municipal Bonds which the Fund intends to purchase.

     The  writer of an  option on a futures  contract  is  required  to  deposit
initial  and  variation  margin  pursuant  to  requirements   similar  to  those
applicable to futures contracts. Premiums received from the writing of an option
will be  included  in  initial  margin.  The  writing  of an option on a futures
contract involves risks similar to those relating to futures contracts.

     The Trust has received an order from the  Commission  exempting it from the
provisions of Section 17(f) and Section 18(f) of the  Investment  Company Act in
connection  with its strategy of investing in futures  contracts.  Section 17(f)
relates to the custody of securities  and other assets of an investment  company
and may be  deemed  to  prohibit  certain  arrangements  between  the  Fund  and
commodities brokers with respect to initial and variation margin.  Section 18(f)
of the Investment  Company Act prohibits an open-end  investment company such as
the Trust from issuing a "senior  security"  other than a borrowing from a bank.
The staff of the Commission  has in the past  indicated that a futures  contract
may be a "senior security" under the Investment Company Act.

     Restrictions  on Use  of  Futures  Transactions.  Regulations  of the  CFTC
applicable  to the Fund  require  that all of the  Fund's  futures  transactions
constitute  bona fide hedging  transactions  and that the Fund purchase and sell
futures  contracts and options thereon (i) for bona fide hedging  purposes,  and
(ii) for  non-hedging  purposes,  if the aggregate  initial  margin and premiums
required to establish positions in such contracts and options does not exceed 5%
of the  liquidation  value of the Fund's  portfolio  assets  after  taking  into
account  unrealized  profits and  unrealized  losses on any such  contracts  and
options.   (However,   the  Fund  intends  to  engage  in  options  and  futures
transactions only for hedging  purposes.) Margin deposits may consist of cash or
securities acceptable to the broker and the relevant contract market.

     When the Fund  purchases  a futures  contract,  or  writes a put  option or
purchases  a call  option  thereon,  it will  maintain  an amount of cash,  cash
equivalents  (e.g.,  high grade  commercial  paper and daily  tender  adjustable
notes) or liquid  securities in a segregated  account with the Fund's custodian,
so that the amount so segregated plus the amount of initial and variation margin
held in the  account  of its  broker  equals  the  market  value of the  futures
contracts,   thereby   ensuring  that  the  use  of  such  futures  contract  is
unleveraged.  It is not anticipated that  transactions in futures contracts will
have the effect of increasing portfolio turnover.

     Risk Factors in Futures  Transactions  and Options.  Investment  in futures
contracts  involves the risk of imperfect  correlation  between movements in the
price of the futures  contract and the price of the security  being hedged.  The
hedge will not be fully  effective when there is imperfect  correlation  between
the movements in the prices of two financial  instruments.  For example,  if the
price of the futures  contract moves more than the price of the hedged security,
the Fund will experience  either a loss or gain on the futures contract which is
not  completely  offset by movements in the price of the hedged  securities.  To
compensate  for  imperfect  correlations,  the Fund may purchase or sell futures
contracts  in a  greater  dollar  amount  than  the  hedged  securities  if  the
volatility of the hedged securities is historically  greater than the volatility
of the  futures  contracts.  Conversely,  the Fund may  purchase  or sell  fewer
futures  contracts if the  volatility  of the price of the hedged  securities is
historically less than that of the futures contracts.

     The  particular   municipal  bonds  comprising  the  index  underlying  the
Municipal Bond Index financial  futures contract may vary from the bonds held by
the Fund. As a result,  the Fund's ability to hedge effectively all or a portion
of the value of its Municipal  Bonds through the use of such  financial  futures
contracts  will  depend in part on the degree to which  price  movements  in the
index  underlying  the  financial  futures  contract  correlate  with the  price
movements  of the  Municipal  Bonds  held by the Fund.  The  correlation  may be
affected by disparities in the average  maturity,  ratings,  geographical mix or
structure  of the  Fund's  investments  as  compared  to  those  comprising  the
Municipal Bond Index and general economic or political factors. In addition, the
correlation  between  movements in the value of the Municipal  Bond Index may be
subject to change over time as additions  to and  deletions  from the  Municipal
Bond Index alter its structure.  The correlation  between  futures  contracts on


                                       9
<PAGE>

U.S.  Government  securities  and the  Municipal  Bonds  held by the Fund may be
adversely  affected  by similar  factors and the risk of  imperfect  correlation
between  movements  in the prices of such  futures  contracts  and the prices of
Municipal  Bonds held by the Fund may be greater.  Municipal  Bond Index futures
contracts were approved for trading in 1986.  Trading in such futures  contracts
may tend to be less liquid than trading in other futures contracts.  The trading
of futures contracts also is subject to certain market risks, such as inadequate
trading  activity,  which  could at times make it  difficult  or  impossible  to
liquidate existing positions.

     The Fund expects to liquidate a majority of the futures contracts it enters
into through offsetting  transactions on the applicable  contract market.  There
can be no assurance,  however, that a liquid secondary market will exist for any
particular  futures  contract at any specific time. Thus, it may not be possible
to close out a futures  position.  In the event of adverse price movements,  the
Fund would  continue  to be required  to make daily cash  payments of  variation
margin.  In such  situations,  if the  Fund  has  insufficient  cash,  it may be
required  to  sell  portfolio   securities  to  meet  daily   variation   margin
requirements at a time when it may be disadvantageous to do so. The inability to
close out  futures  positions  also could  have an adverse  impact on the Fund's
ability to hedge  effectively its investments in Municipal  Bonds. The liquidity
of a secondary market in a futures contract may be adversely  affected by "daily
price  fluctuation  limits"  established by commodity  exchanges which limit the
amount of fluctuation  in a futures  contract price during a single trading day.
Once the daily limit has been reached in the contract,  no trades may be entered
into at a price  beyond the  limit,  thus  preventing  the  liquidation  of open
futures  positions.  Prices  have in the past moved  beyond the daily limit on a
number of consecutive  trading days. The Fund will enter into a futures position
only if, in the judgment of the Manager,  there appears to be an actively traded
secondary market for such futures contracts.

     The  successful  use of  transactions  in futures and related  options also
depends on the ability of the Manager to forecast  correctly  the  direction and
extent of  interest  rate  movements  within a given time  frame.  To the extent
interest  rates remain stable  during the period in which a futures  contract or
option is held by the Fund or such rates move in a  direction  opposite  to that
anticipated, the Fund may realize a loss on the hedging transaction which is not
fully or partially  offset by an increase in the value of portfolio  securities.
As a result,  the Fund's total return for such period may be less than if it had
not engaged in the hedging transaction.

     Because of low initial  margin  deposits made upon the opening of a futures
position,  futures  transactions  involve  substantial  leverage.  As a  result,
relatively  small movements in the price of the futures  contracts can result in
substantial  unrealized  gains or losses.  There is also the risk of loss by the
Fund of margin  deposits  in the event of  bankruptcy  of a broker with whom the
Fund has an open position in a financial futures contract. Because the Fund will
engage  in the  purchase  and  sale of  futures  contracts  solely  for  hedging
purposes,  however,  any losses incurred in connection  therewith should, if the
hedging  strategy is  successful,  be offset in whole or in part by increases in
the value of securities held by the Fund or decreases in the price of securities
the Fund intends to acquire.

     The  amount  of risk the Fund  assumes  when it  purchases  an  option on a
futures  contract is the premium  paid for the option plus  related  transaction
costs. In addition to the correlation  risks discussed above, the purchase of an
option on a futures  contract also entails the risk that changes in the value of
the underlying  futures contract will not be fully reflected in the value of the
option purchased.

Description of Temporary Investments

     The Fund may invest in short-term  tax-free and taxable  securities subject
to the  limitations  set forth above and in the  Prospectus  under "How the Fund
Invests." The tax-exempt  money market  securities may include  municipal notes,
municipal  commercial paper,  municipal bonds with a remaining  maturity of less
than one year, variable rate demand notes and participations therein.  Municipal
notes  include  tax  anticipation  notes,  bond  anticipation   notes,   revenue
anticipation notes and grant anticipation notes.  Anticipation notes are sold as
interim  financing in  anticipation of tax  collection,  bond sales,  government
grants or revenue  receipts.  Municipal  commercial  paper refers to  short-term
unsecured  promissory notes generally issued to finance short-term credit needs.
The taxable  money market  securities  in which the Fund may invest as Temporary
Investments  consist  of U.S.  Government  securities,  U.S.  Government  agency
securities,  domestic bank or savings  institution  certificates  of deposit and
bankers'  acceptances,  short-term  corporate debt securities such as commercial
paper and repurchase agreements.  These Temporary Investments must have a stated
maturity not in excess of one year from the date of  purchase.  The Fund may not
invest in any  security  issued by a  commercial  bank or a savings  institution



                                       10
<PAGE>

unless the bank or  institution is organized and operating in the United States,
has total assets of at least one billion  dollars and is a member of the Federal
Deposit Insurance  Corporation  ("FDIC"),  except that up to 10% of total assets
may be  invested  in  certificates  of deposit of smaller  institutions  if such
certificates are fully insured by the FDIC.

     VRDOs and  Participating  VRDOs.  VRDOs are  tax-exempt  obligations  which
contain a floating or variable  interest rate adjustment  formula and a right of
demand on the part of the  holder  thereof  to  receive  payment  of the  unpaid
principal balance plus accrued interest upon a short notice period not to exceed
seven  days.  There is,  however,  the  possibility  that  because of default or
insolvency  the  demand  feature  of VRDOs  and  Participating  VRDOs may not be
honored.  The interest rates are adjustable at intervals  (ranging from daily to
up to one year) to some  prevailing  market rate for similar  investments,  such
adjustment  formula being  calculated to maintain the market value of the VRDOs,
at  approximately  the par  value  of the  VRDOs  on the  adjustment  date.  The
adjustments typically are based upon the Public Securities  Association Index or
some other  appropriate  interest rate adjustment  index. The Fund may invest in
all types of tax-exempt instruments currently outstanding or to be issued in the
future which satisfy the short-term maturity and quality standards of the Fund.

     Participating  VRDOs provide the Fund with a specified  undivided  interest
(up to 100%) of the underlying obligation and the right to demand payment of the
unpaid principal balance plus accrued interest on the  Participating  VRDOs from
the financial  institution upon a specified number of days notice, not to exceed
seven days.  In addition,  the  Participating  VRDO is backed by an  irrevocable
letter of credit or guaranty of the financial  institution.  The Fund would have
an undivided  interest in the underlying  obligation and thus participate on the
same basis as the  financial  institution  in such  obligation  except  that the
financial  institution  typically  retains fees out of the interest  paid on the
obligation  for  servicing  the  obligation,  providing the letter of credit and
issuing the repurchase commitment. The Fund has been advised by its counsel that
the Fund should be entitled to treat the income received on Participating  VRDOs
as interest from tax-exempt obligations.

     VRDOs  that  contain a right of demand to  receive  payment  of the  unpaid
principal  balance plus accrued interest on a notice period exceeding seven days
may be deemed to be  illiquid  securities.  A VRDO with a demand  notice  period
exceeding  seven days will  therefore  be subject to the Fund's  restriction  on
illiquid  investments  unless,  in the  judgment of the  Trustees,  such VRDO is
liquid.  The Trustees may adopt guidelines and delegate to the Manager the daily
function of determining  and monitoring  liquidity of such VRDOs.  The Trustees,
however, will retain sufficient oversight and will be ultimately responsible for
such determinations.

     The Temporary Investments,  VRDOs and Participating VRDOs in which the Fund
may invest will be in the following  rating  categories at the time of purchase:
MIG-1/VMIG-1  through  MIG-3/VMIG-3  for notes and  VRDOs  and  Prime-1  through
Prime-3 for commercial  paper (as determined by Moody's),  SP-1 through SP-2 for
notes and A-1 through A-3 for VRDOs and commercial paper (as determined by S&P),
or F-1 through  F-3 for notes,  VRDOs and  commercial  paper (as  determined  by
Fitch).  Temporary  Investments,  if not rated, must be of comparable quality in
the opinion of the Manager.  In addition,  the Fund reserves the right to invest
temporarily  a greater  portion  of its  assets  in  Temporary  Investments  for
defensive  purposes,  when,  in the judgment of the Manager,  market  conditions
warrant.

     Repurchase  Agreements.  The Fund may  invest  in  securities  pursuant  to
repurchase  agreements.  Repurchase  agreements  may be entered into only with a
member  bank of the Federal  Reserve  System or primary  dealer or an  affiliate
thereof,  in U.S.  Government  securities.  Under such  agreements,  the bank or
primary dealer or an affiliate thereof agrees,  upon entering into the contract,
to  repurchase  the security at a mutually  agreed upon time and price,  thereby
determining the yield during the term of the agreement.  This results in a fixed
rate of return  insulated  from  market  fluctuations  during  such  period.  In
repurchase  agreements,  the  prices at which the trades  are  conducted  do not
reflect accrued interest on the underlying obligations.  Such agreements usually
cover  short  periods,  such as under one  week.  Repurchase  agreements  may be
construed to be  collateralized  loans by the purchaser to the seller secured by
the securities transferred to the purchaser. In a repurchase agreement, the Fund
will require the seller to provide additional  collateral if the market value of
the securities  falls below the repurchase  price at any time during the term of
the  repurchase  agreement.  In the  event  of  default  by the  seller  under a
repurchase  agreement  construed to be a  collateralized  loan,  the  underlying
securities  are not  owned by the Fund but only  constitute  collateral  for the
seller's obligation to pay the repurchase price. Therefore,  the Fund may suffer
time  delays  and  incur  costs  or  possible  losses  in  connection  with  the
disposition of the collateral. In



                                       11
<PAGE>

the  event of a  default  under  such a  repurchase  agreement,  instead  of the
contractual  fixed  rate of  return,  the rate of  return  to the Fund  shall be
dependent upon intervening fluctuations of the market value of such security and
the accrued interest on the security.  In such event, the Fund would have rights
against the seller for breach of  contract  with  respect to any losses  arising
from market  fluctuations  following  the failure of the seller to perform.  The
Fund may not invest in repurchase agreements maturing in more than seven days if
such investments, together with all other illiquid investments, would exceed 15%
of the Fund's net assets.

     In general,  for Federal  income tax purposes,  repurchase  agreements  are
treated as  collateralized  loans secured by the securities  "sold."  Therefore,
amounts earned under such agreements will not be considered tax-exempt interest.
The treatment of purchase and sales contracts is less certain.


     Suitability. The economic benefit of an investment in the Fund depends upon
many   factors   beyond  the   control  of  the  Fund,   the   Manager  and  its
affiliates.Because  of its emphasis on Arizona  Municipal Bonds, the Fund should
be  considered a vehicle for  diversification  and not as a balanced  investment
program.  The suitability for any particular investor of a purchase of shares in
the Fund will depend upon,  among other things,  such  investor's tax situation,
investment  objectives and ability to accept the risks associated with investing
in Arizona Municipal Bonds, including the risk of loss of principal and the risk
of receiving income that is not exempt from Federal and Arizona income taxes.


Investment Restrictions

     The  Fund  has  adopted  a  number  of  fundamental   and   non-fundamental
restrictions  and  policies  relating  to the  investment  of its assets and its
activities.  The fundamental policies set forth below may not be changed without
the  approval  of the  holders of a majority  of the Fund's  outstanding  voting
securities  (which for this purpose and under the  Investment  Company Act means
the  lesser of (i) 67% of the Fund's  shares  present at a meeting at which more
than 50% of the outstanding shares of the Fund are represented or (ii) more than
50% of the Fund's outstanding shares). The Fund may not:

        (1) Make any investment inconsistent with the Fund's classification as a
   diversified company under the Investment Company Act.

        (2) Invest more than 25% of its assets,  taken at market  value,  in the
   securities  of  issuers  in  any  particular  industry  (excluding  the  U.S.
   Government  and its  agencies  and  instrumentalities).  For purposes of this
   restriction,  states, municipalities and their political subdivisions are not
   considered part of any industry.

        (3)  Make   investments  for  the  purpose  of  exercising   control  or
   management.

        (4) Purchase or sell real estate,  except that, to the extent  permitted
   by applicable  law, the Fund may invest in securities  directly or indirectly
   secured by real  estate or  interests  therein or issued by  companies  which
   invest in real estate or interests therein.

        (5) Make loans to other persons,  except that the  acquisition of bonds,
   debentures or other  corporate  debt  securities and investment in government
   obligations,  commercial  paper,  pass-through  instruments,  certificates of
   deposit,   bankers'   acceptances,   repurchase  agreements  or  any  similar
   instruments  shall  not be  deemed to be the  making  of a loan,  and  except
   further that the Fund may lend its  portfolio  securities,  provided that the
   lending  of  portfolio  securities  may  be  made  only  in  accordance  with
   applicable  law and the  guidelines  set forth in the Fund's  Prospectus  and
   Statement  of  Additional  Information,  as they may be amended  from time to
   time.

        (6) Issue senior  securities to the extent such  issuance  would violate
   applicable law.

        (7) Borrow  money,  except  that (i) the Fund may borrow  from banks (as
   defined in the  Investment Company Act) in amounts up to 33 1/3% of its total
   assets  (including  the amount  borrowed),  (ii) the Fund may,  to the extent
   permitted  by  applicable  law,  borrow up to an  additional  5% of its total
   assets for  temporary  purposes,  (iii) the Fund may obtain  such  short-term
   credit  as may be  necessary  for the  clearance  of  purchases  and sales of
   portfolio  securities and (iv) the Fund may purchase  securities on margin to
   the extent  permitted by  applicable  law. The Fund may not pledge its assets
   other  than to secure  such  borrowings  or, to the extent  permitted  by the
   Fund's  investment  policies as set forth in its  Prospectus and


                                       12
<PAGE>

   Statement  of  Additional  Information,  as they may be amended  from time to
   time, in connection with hedging transactions,  short sales,  when-issued and
   forward commitment transactions and similar investment strategies.

        (8) Underwrite  securities of other issuers,  except insofar as the Fund
   technically may be deemed an underwriter under the Securities Act of 1933, as
   amended ("Securities Act"), in selling portfolio securities.

        (9) Purchase or sell commodities or contracts on commodities,  except to
   the extent that the Fund may do so in accordance  with applicable law and the
   Fund's  Prospectus  and Statement of Additional  Information,  as they may be
   amended  from time to time,  and  without  registering  as a  commodity  pool
   operator under the Commodity Exchange Act.

     Under the non-fundamental investment restrictions,  which may be changed by
the Board of Trustees without shareholder approval, the Fund may not:

        (a) Purchase  securities of other  investment  companies,  except to the
   extent such purchases are permitted by applicable law. As a matter of policy,
   however,  the Fund  will  not  purchase  shares  of any  registered  open-end
   investment  company or  registered  unit  investment  trust,  in  reliance on
   Section 12(d)(1)(F) or (G) (the "fund of funds" provisions) of the Investment
   Company  Act, at any time the Fund's  shares are owned by another  investment
   company that is part of the same group of investment companies as the Fund.

        (b) Make short sales of securities or maintain a short position,  except
   to the extent permitted by applicable law. The Fund currently does not intend
   to engage in short sales, except short sales "against the box."

        (c) Invest in securities which cannot be readily resold because of legal
   or contractual  restrictions or which cannot otherwise be marketed,  redeemed
   or put to the issuer or a third  party,  if at the time of  acquisition  more
   than 15% of its total  assets  would be  invested  in such  securities.  This
   restriction  shall not apply to securities  which mature within seven days or
   securities which the Board of Trustees of the Trust has otherwise  determined
   to be liquid pursuant to applicable law.

        (d) Notwithstanding fundamental investment restriction (7) above, borrow
   amounts in excess of 20% of its total assets taken at market value (including
   the amount  borrowed),  and then only from banks as a  temporary  measure for
   extraordinary or emergency purposes. In addition,  the Fund will not purchase
   securities while borrowings are outstanding.


     The Fund's  investments  will be  limited so as to qualify as a  "regulated
investment  company"  for  purposes  of the Code.  See  "Dividends  and Taxes --
Taxes." To qualify,  among other  requirements,  the Trust will limit the Fund's
investments  so that, at the close of each quarter of the taxable year,  (i) not
more than 25% of the market value of the Fund's total assets will be invested in
the  securities of a single  issuer,  and (ii) with respect to 50% of the market
value of its total  assets,  not more than 5% of the  market  value of its total
assets will be invested in the  securities  of a single issuer and the Fund will
not own more than 10% of the outstanding  voting  securities of a single issuer.
For  purposes  of this  restriction,  the Fund will  regard  each state and each
political  subdivision,  agency  or  instrumentality  of  such  state  and  each
multi-state  agency of which such state is a member  and each  public  authority
which  issues  securities  on behalf of a private  entity as a separate  issuer,
except  that if the  security  is backed  only by the assets and  revenues  of a
non-government  entity then the entity with the ultimate  responsibility for the
payment of interest  and  principal  may be regarded as the sole  issuer.  These
tax-related  limitations  may be  changed  by the  Trustees  of the Trust to the
extent  necessary  to comply with changes to the Federal tax  requirements.  The
Fund is  "diversified"  under the  Investment  Company Act and must  satisfy the
foregoing 5% and 10% requirements with respect to 75% of its total assets.

     Because  of  the  affiliation  of  Merrill  Lynch,  Pierce,  Fenner & Smith
Incorporated  ("Merrill  Lynch") with the Manager,  the Fund is prohibited  from
engaging  in certain  transactions  involving  Merrill  Lynch or its  affiliates
except  pursuant to an  exemptive  order under the  Investment  Company Act. See
"Portfolio  Transactions."  Without  such an  exemptive  order the Fund would be
prohibited from engaging in portfolio  transactions with Merrill Lynch or any of
its affiliates acting as principal.



                                       13
<PAGE>

Portfolio Turnover

     The Manager will effect portfolio  transactions  without regard to the time
the  securities  have been held,  if, in its  judgment,  such  transactions  are
advisable in light of a change in  circumstances  of a  particular  issuer or in
general market, financial or economic conditions.  As a result of its investment
policies,  the Fund may engage in a substantial number of portfolio transactions
and the Fund's  portfolio  turnover  rate may vary  greatly from year to year or
during  periods  within a year.The  portfolio  turnover  rate is  calculated  by
dividing  the  lesser of the  Fund's  annual  sales or  purchases  of  portfolio
securities  (exclusive of purchases or sales of securities  whose  maturities at
the time of acquisition  were one year or less) by the monthly  average value of
the securities in the portfolio  during the year. A high portfolio  turnover may
result in  negative  tax  consequences,  such as an  increase  in  capital  gain
dividends  or in ordinary  income  dividends  of accrued  market  discount.  See
"Dividends  and  Taxes --  Taxes."  High  portfolio  turnover  may also  involve
correspondingly greater transaction costs, which are borne directly by the Fund.


                             MANAGEMENT OF THE TRUST

Trustees and Officers

     The Trustees of the Trust  consist of seven  individuals,  five of whom are
not "interested  persons" of the Trust as defined in the Investment  Company Act
(the  "non-interested  Trustees").  The Trustees are responsible for the overall
supervision  of the  operations  of the Trust and  perform  the  various  duties
imposed on the directors or Trustees of investment  companies by the  Investment
Company Act. Information about the Trustees, executive officers of the Trust and
the  portfolio  manager of the Fund,  including  their ages and their  principal
occupations  for at least  the last  five  years,  is set  forth  below.  Unless
otherwise  noted,  the  address  of  each  Trustee,  executive  officer  and the
portfolio manager is P.O. Box 9011, Princeton, New Jersey 08543-9011.

     TERRY K. GLENN (59) --  President  and  Trustee  (1)(2) --  Executive  Vice
President  of the Manager and Merrill  Lynch  Asset  Management,  L.P.  ("MLAM")
(which terms as used herein include their  corporate  predecessors)  since 1983;
Executive Vice President and Director of Princeton  Services,  Inc.  ("Princeton
Services") since 1993;  President of Princeton Funds  Distributor,  Inc. ("PFD")
since  1986  and   Director   thereof   since  1991;   President   of  Princeton
Administrators, L.P. since 1988.


     JAMES H. BODURTHA (55) -- Trustee  (2)(3) -- 36 Popponesset  Road,  Cotuit,
Massachusetts 02635.  Director and Executive Vice President,  The China Business
Group, Inc. since 1996;  Chairman and Chief Executive Officer,  China Enterprise
Management Corporation from 1993 to 1996; Chairman,  Berkshire Corporation since
1980; Partner,  Squire,  Sanders & Dempsey from 1980 to 1993;  Director,  Gilder
Group LLC and related companies since 1999.


     HERBERT I. LONDON (60) -- Trustee  (2)(3) -- 2 Washington  Square  Village,
New  York,  New York  10012.  John M. Olin  Professor  of  Humanities,  New York
University  since 1993 and  Professor  thereof  since  1980;  President,  Hudson
Institute since 1997 and Trustee thereof since 1980; Dean,  Gallatin Division of
New York University from 1976 to 1993;  Distinguished Fellow, Herman Kahn Chair,
Hudson  Institute from 1984 to 1985;  Director,  Damon  Corporation from 1991 to
1995;  Overseer,  Center for Naval Analyses from 1983 to 1993;  Limited Partner,
Hypertech LP since 1996.

     ROBERT R.  MARTIN  (72) --  Trustee  (2)(3) -- 513 Grand  Hill,  St.  Paul,
Minnesota 55102. Chairman and Chief Executive Officer, Kinnard Investments, Inc.
from 1990 to 1993;  Executive Vice  President,  Dain Bosworth from 1974 to 1989;
Director,  Carnegie Capital Management from 1977 to 1985 and Chairman thereof in
1979;  Director,  Securities  Industry  Association from 1981 to 1982 and Public
Securities  Association from 1979 to 1980; Chairman of the Board, WTC Industries
Inc. in 1994; Trustee, Northland College since 1992.

     JOSEPH L. MAY (70) -- Trustee  (2)(3) -- 424  Church  Street,  Suite  2000,
Nashville,  Tennessee 37219. Attorney in private practice since 1984; President,
May and Athens Hosiery Mills Division,  Wayne-Gossard  Corporation  from 1954 to
1983; Vice President, Wayne-Gossard Corporation from 1972 to 1983; Chairman, The
May Corporation  (personal holding company) from 1972 to 1983; Director,  Signal
Apparel Co. from 1972 to 1989.

     ANDRE F.  PEROLD (47) -- Trustee  (2)(3) -- Morgan  Hall,  Soldiers  Field,
Boston,  Massachusetts 02163. Professor,  Harvard Business School since 1989 and
Associate Professor from 1983 to 1989; Trustee, The


                                       14
<PAGE>



Common Fund since 1989;  Director,  Quantec Limited from 1991 to 1999; Director,
TIBCO from 1994 to 1996;  Director,  Genbel  Securities  Limited and Gensec Bank
since 1999.


     ARTHUR ZEIKEL (67) -- Trustee (1)(2) -- 300 Woodland Avenue, Westfield, New
Jersey  07090.  Chairman of the Manager and MLAM from 1997 to 1999 and President
thereof  from 1977 to 1997;  Chairman of Princeton  Services  from 1997 to 1999,
Director  thereof  from 1993 to 1999 and  President  thereof  from 1993 to 1997;
Executive  Vice President of Merrill Lynch & Co., Inc. ("ML & Co.") from 1990 to
1999.

     VINCENT R.  GIORDANO  (55) -- Senior Vice  President  (1)(2) -- Senior Vice
President of the Manager and MLAM since 1984; Senior Vice President of Princeton
Services since 1993.

     KENNETH A. JACOB (48) -- Vice  President  (1)(2) -- First Vice President of
MLAM since 1997; Vice President of MLAM from 1984 to 1997; Vice President of the
Manager since 1984.


     WALTER  O'CONNOR  (38) -- Portfolio  Manager and Vice  President  (1)(2) --
Director  (Municipal Tax Exempt) of MLAM since 1997; Vice President of MLAM from
1993 to 1997; Assistant Vice President of MLAM from 1991 to 1993.


     DONALD C. BURKE (39) -- Vice President and Treasurer  (1)(2) -- Senior Vice
President  and  Treasurer  of the  Manager  and MLAM  since  1999;  Senior  Vice
President and Treasurer of Princeton  Services since 1999; Vice President of PFD
since 1999;  First Vice  President of MLAM from 1997 to 1999;  Vice President of
MLAM from 1990 to 1997; Director of Taxation of MLAM since 1990.

     ALICE A.  PELLEGRINO  (39) --  Secretary  (1)(2) -- Vice  President of MLAM
since 1999; Attorney associated with MLAM since 1997; Associate with Kirkpatrick
& Lockhart LLP from 1992 to 1997.

- ---------------
(1)  Interested person, as defined in the Investment Company Act, of the Trust.

(2)  Such Trustee or officer is a director,  trustee or officer of certain other
     investment  companies for which the Manager or MLAM acts as the  investment
     adviser or manager.

(3)  Member of the Trust's Audit and Nominating Committee,  which is responsible
     for  the  selection  of the  independent  auditors  and the  selection  and
     nomination of non-interested Trustees.


     As of November 1, 1999, the Trustees, officers of the Trust and officers of
the Fund as a group  (12  persons)  owned an  aggregate  of less  than 1% of the
outstanding  shares of the Fund.  At such  date,  Mr.  Zeikel,  a Trustee of the
Trust,  Mr. Glenn,  a Trustee and officer of the Trust and the other officers of
the Trust and the Fund  owned an  aggregate  of less than 1% of the  outstanding
shares of common stock of ML & Co.


Compensation of Trustees

     The Trust pays each  non-interested  Trustee a fee of $10,000 per year plus
$1,000 per Board meeting  attended.  The Trust also  compensates  members of its
Audit and  Nominating  Committee  (the  "Committee"),  which consists of all the
non-interested  Trustees,  a fee of  $2,000  per year  plus  $500 per  Committee
meeting  attended.  The Trust  reimburses  each  non-interested  Trustee for his
out-of-pocket  expenses relating to attendance at Board and Committee  meetings.
The fees and expenses of the Trustees are allocated to the respective  series of
the Trust on the basis of asset size.

     The following  table shows the  compensation  earned by the  non-interested
Trustees for the fiscal year ended July 31, 1999 and the aggregate  compensation
paid to them from all registered investment companies advised by the Manager and
its  affiliate,  MLAM  ("MLAM/FAM-advised  funds"),  for the calendar year ended
December 31, 1998.

<TABLE>
<CAPTION>


                                                                                                       Aggregate
                                                                   Pension or        Estimated     Compensation from
                                                               Retirement Benefits     Annual       Trust and Other
                                    Position with Compensation Accrued as Part of   Benefits upon      MLAM/FAM-
Name                                    Trust       From Fund     Fund Expense       Retirement     Advised Funds(1)
- -----                                -----------  ------------  -----------------   -----------     ----------------
<S>                                  <C>          <C>           <C>                 <C>             <C>
James H. Bodurtha ................     Trustee       $798              None             None           $163,500
Herbert I. London ................     Trustee       $798              None             None           $163,500
Robert R. Martin .................     Trustee       $798              None             None           $163,500
Joseph L. May ....................     Trustee       $798              None             None           $163,500
Andre F. Perold ..................     Trustee       $798              None             None           $163,500
</TABLE>



- --------------
(1)  The Trustees serve on the boards of MLAM/FAM-advised  funds as follows: Mr.
     Bodurtha (29 registered  investment companies consisting of 47 portfolios);
     Mr.  London  (29   registered   investment   companies   consisting  of  47
     portfolios);  Mr. Martin (29 registered  investment companies consisting of
     47 portfolios);  Mr. May (29 registered  investment companies consisting of
     47  portfolios);   and  Mr.  Perold  (29  registered  investment  companies
     consisting of 47 portfolios).


                                       15
<PAGE>

     Trustees of the Trust may purchase  Class A shares of the Fund at net asset
value.  See "Purchase of Shares -- Initial Sales Charge  Alternatives -- Class A
and ClassD  Shares -- Reduced  Initial  Sales  Charges -- Purchase  Privilege of
Certain Persons."

Management and Advisory Arrangements

     Management Services. The Manager provides the Fund with investment advisory
and management services. Subject to the supervision of the Trustees, the Manager
is responsible for the actual  management of the Fund's portfolio and constantly
reviews the Fund's holdings in light of its own research  analysis and that from
other relevant sources.  The responsibility for making decisions to buy, sell or
hold a particular security rests with the Manager.  The Manager performs certain
of the  other  administrative  services  and  provides  all  the  office  space,
facilities,  equipment and necessary  personnel for  management of the Trust and
the Fund.

     Management Fee. The Trust has entered into a management agreement on behalf
of the Fund with the Manager (the "Management Agreement"), pursuant to which the
Manager receives for its services to the Fund monthly compensation at the annual
rate of 0.55% of the average daily net assets not exceeding $500 million; 0.525%
of the average daily net assets  exceeding  $500 million but not exceeding  $1.0
billion and 0.50% of the average daily net assets  exceeding  $1.0 billion.  The
table below sets forth  information  about the total management fees paid by the
Fund to the Manager for the periods indicated.



         Fiscal Year Ended July 31,                              Management Fee
         -----------------------                                 --------------
         1999 .................................................     $368,955
         1998 .................................................     $390,732
         1997 .................................................     $442,015


     Payment of Fund Expenses. The Management Agreement obligates the Manager to
provide investment  advisory services and to pay all compensation of and furnish
office space for officers and employees of the Trust  connected with  investment
and economic research,  trading and investment  management of the Trust, as well
as the fees of all Trustees of the Trust who are affiliated  persons of ML & Co.
or any of its  affiliates.  The Fund pays all  other  expenses  incurred  in its
operation and a portion of the Trust's general administrative expenses allocated
on the basis of the asset size of the respective series of the Trust ("Series").
Expenses that will be borne directly by the Series include redemption  expenses,
expenses of portfolio  transactions,  expenses of  registering  the shares under
federal  and  state  securities   laws,   pricing  costs  (including  the  daily
calculation  of net asset  value),  expenses  of printing  shareholder  reports,
prospectuses and statements of additional information, except to the extent paid
by Merrill Lynch Funds  Distributor,  a division of PFD (the  "Distributor")  as
described  below,  fees  for  legal  and  auditing  services,  Commission  fees,
interest,  certain taxes and other expenses attributable to a particular Series.
Expenses  that will be  allocated  on the basis of asset size of the  respective
Series include fees and expenses of  non-interested  Trustees,  state  franchise
taxes,  costs of printing  proxies and other  expenses  relating to  shareholder
meetings and other expenses  properly payable by the Trust.  The  organizational
expenses of the Trust were paid by the Trust, and if additional Series are added
to the Trust, the organizational  expenses will be allocated among the Series in
a manner  deemed  equitable  by the  Trustees.  Depending  upon the  nature of a
lawsuit,  litigation  costs may be assessed to the specific  Series to which the
lawsuit  relates or allocated  on the basis of the asset size of the  respective
Series.  The Trustees  have  determined  that this is an  appropriate  method of
allocation  of  expenses.  Accounting  services are provided to the Trust by the
Manager and the Trust  reimburses  the Manager for its costs in connection  with
such  services.  As  required  by  the  Fund's  distribution   agreements,   the
Distributor will pay the promotional expenses of the Fund incurred in connection
with the offering of shares of the Fund. Certain expenses in connection with the
account  maintenance  and  distribution  of Class B and  Class C shares  will be
financed by the Trust pursuant to the Distribution Plans in compliance with Rule
12b-1 under the Investment  Company Act. See "Purchase of Shares -- Distribution
Plans."  Reference is made to  "Management  of the Fund" in the  Prospectus  for
certain information  concerning the management and advisory  arrangements of the
Trust.

     Organization  of the  Manager.  The Manager is a limited  partnership,  the
partners of which are ML & Co., a  financial  services  holding  company and the
parent of Merrill Lynch, and Princeton Services. ML & Co. and Princeton Services
are "controlling persons" of the Manager as defined under the Investment Company
Act  because of their  ownership  of its  voting  securities  or their  power to
exercise a controlling influence over its management or policies.


                                       16
<PAGE>

     Duration and Termination.  Unless earlier  terminated as described  herein,
the  Management  Agreement  will  remain in effect from year to year if approved
annually  (a) by the  Trustees of the Trust or by a majority of the  outstanding
shares of the Fund and (b) by a majority of the  Trustees who are not parties to
such contract or interested  persons (as defined in the Investment  Company Act)
of any such party.  Such  contracts  are not  assignable  and may be  terminated
without  penalty on 60 days' written  notice at the option of either party or by
vote of the shareholders of the Fund.

     Transfer  Agency  Services.  Financial Data  Services,  Inc. (the "Transfer
Agent"),  a subsidiary of ML & Co., acts as the Trust's  Transfer Agent pursuant
to a Transfer  Agency,  Dividend  Disbursing  Agency and  Shareholder  Servicing
Agency  Agreement (the "Transfer  Agency  Agreement").  Pursuant to the Transfer
Agency Agreement,  the Transfer Agent is responsible for the issuance,  transfer
and  redemption  of  shares  and the  opening  and  maintenance  of  shareholder
accounts. Pursuant to the Transfer Agency Agreement, the Transfer Agent receives
a fee of $11.00 per Class A or Class D account and $14.00 per Class B or Class C
account and is entitled to  reimbursement  for certain  transaction  charges and
out-of-pocket  expenses incurred by the Transfer Agent under the Transfer Agency
Agreement.  Additionally,  a $.20 monthly closed account charge will be assessed
on all accounts  which close during the calendar  year.  Application of this fee
will commence the month following the month the account is closed. At the end of
the  calendar  year,  no further  fees will be due. For purposes of the Transfer
Agency Agreement,  the term "account" includes a shareholder  account maintained
directly by the Transfer Agent and any other account representing the beneficial
interest  of a person in the  relevant  share class on a  recordkeeping  system,
provided the recordkeeping system is maintained by a subsidiary of ML & Co.

     Distribution Expenses. The Fund has entered into four separate distribution
agreements with the  Distributor in connection  with the continuous  offering of
each  class  of  shares  of  the  Fund  (the  "Distribution  Agreements").   The
Distribution  Agreements  obligate the  Distributor  to pay certain  expenses in
connection  with the  offering  of each  class of shares of the Fund.  After the
prospectuses,  statements of additional  information  and periodic  reports have
been prepared, set in type and mailed to shareholders,  the Distributor pays for
the printing and  distribution  of copies  thereof used in  connection  with the
offering  to  dealers  and  investors.  The  Distributor  also  pays  for  other
supplementary   sales   literature  and  advertising   costs.  The  Distribution
Agreements  are  subject  to  the  same  renewal  requirements  and  termination
provisions as the Management Agreement described above.

Code of Ethics

     The Board of Trustees of the Trust has adopted a Code of Ethics  under Rule
17j-1 of the Investment  Company Act that incorporates the Code of Ethics of the
Manager (together,  the "Codes").  The Codes significantly restrict the personal
investing  activities of all  employees of the Manager and, as described  below,
impose additional, more onerous, restrictions on fund investment personnel.

     The Codes require that all employees of the Manager  pre-clear any personal
securities investment (with limited exceptions,  such as government securities).
The pre-clearance requirement and associated procedures are designed to identify
any substantive prohibition or limitation applicable to the proposed investment.
The substantive  restrictions applicable to all employees of the Manager include
a ban on acquiring  any  securities  in a "hot"  initial  public  offering and a
prohibition from profiting on short-term trading in securities.  In addition, no
employee may purchase or sell any security  that at the time is being  purchased
or sold (as the  case may be),  or to the  knowledge  of the  employee  is being
considered   for  purchase  or  sale,  by  any  fund  advised  by  the  Manager.
Furthermore,  the Codes provide for trading  "blackout  periods"  which prohibit
trading by  investment  personnel  of the Fund within  periods of trading by the
Fund in the same (or  equivalent)  security  (15 or 30 days  depending  upon the
transaction).


                               PURCHASE OF SHARES

     Reference is made to "How to Buy,  Sell,  Transfer and Exchange  Shares" in
the Prospectus.

     The Fund  offers four  classes of shares  under the  Merrill  Lynch  Select
Pricing(SM) System: shares of Class A and Class D are sold to investors choosing
the initial sales charge alternatives and shares of Class B and Class C are sold
to  investors  choosing the deferred  sales charge  alternatives.  Each Class A,
Class B, Class C or Class D share of the Fund  represents an identical  interest
in the  investment  portfolio of the Fund and has the same  rights,  except that
Class B, Class C and Class D shares bear the  expenses  of the  ongoing  account
maintenance  fees (also  known as  service  fees) and Class B and Class C shares
bear the expenses of the ongoing distribution fees and the



                                       17
<PAGE>

additional  incremental  transfer agency costs resulting from the deferred sales
charge   arrangements.   The  contingent   deferred  sales  charges   ("CDSCs"),
distribution  fees and account  maintenance fees that are imposed on Class B and
Class C shares,  as well as the  account  maintenance  fees that are  imposed on
Class D shares,  are imposed  directly against those classes and not against all
assets of the Fund and,  accordingly,  such  charges do not affect the net asset
value of any other class or have any impact on investors  choosing another sales
charge  option.  Dividends  paid by the  Fund  for  each  class  of  shares  are
calculated  in the same  manner at the same time and  differ  only to the extent
that account  maintenance and  distribution  fees and any  incremental  transfer
agency costs relating to a particular class are borne exclusively by that class.
Each class has  different  exchange  privileges.  See  "Shareholder  Services --
Exchange Privilege."

     Investors  should  understand  that the purpose and function of the initial
sales  charges  with  respect  to the Class A and Class D shares are the same as
those of the CDSCs and distribution fees with respect to the Class B and Class C
shares in that the sales charges and distribution  fees applicable to each class
provide for the  financing of the  distribution  of the shares of the Fund.  The
distribution-related  revenues  paid with respect to a class will not be used to
finance the  distribution  expenditures  of another class.  Sales  personnel may
receive different compensation for selling different classes of shares.

     The  Merrill  Lynch  Select  Pricing(SM)  System  is used  by more  than 50
registered investment companies advised by MLAM or FAM. Funds advised by MLAM or
FAM that  utilize the Merrill  Lynch Select  Pricing(SM)  System are referred to
herein as "Select Pricing Funds."

     The Fund or the  Distributor  may  suspend the  continuous  offering of the
Fund's  shares  of any  class  at any  time in  response  to  conditions  in the
securities  markets or otherwise  and may  thereafter  resume such offering from
time to time. Any order may be rejected by the Fund or the Distributor.  Neither
the  Distributor  nor the dealers are  permitted to withhold  placing  orders to
benefit  themselves by a price change.  Merrill Lynch may charge its customers a
processing fee (presently  $5.35) to confirm a sale of shares to such customers.
Purchases  made  directly  through  the  Transfer  Agent are not  subject to the
processing fee.

Initial Sales Charge Alternatives -- Class A and Class D Shares

     Investors  who  prefer an initial  sales  charge  alternative  may elect to
purchase Class D shares or, if an eligible investor,  Class A shares.  Investors
choosing the initial sales charge alternative who are eligible to purchase Class
A shares should purchase Class A shares rather than Class D shares because there
is an account  maintenance fee imposed on Class D shares.  Investors  qualifying
for  significantly  reduced  initial  sales  charges may find the initial  sales
charge  alternative   particularly   attractive  because  similar  sales  charge
reductions are not available with respect to the deferred sales charges  imposed
in  connection  with  purchases  of Class B or  Class C  shares.  Investors  not
qualifying  for reduced  initial  sales  charges  who expect to  maintain  their
investment for an extended  period of time also may elect to purchase Class A or
Class D shares,  because over time the accumulated  ongoing account  maintenance
and distribution  fees on Class B or Class C shares may exceed the initial sales
charges  and,  in the case of  Class D  shares,  the  account  maintenance  fee.
Although some investors who previously purchased Class A shares may no longer be
eligible  to  purchase  Class A shares  of other  Select  Pricing  Funds,  those
previously purchased Class A shares,  together with Class B, Class C and Class D
share holdings,  will count toward a right of accumulation which may qualify the
investor  for a  reduced  initial  sales  charge  on new  initial  sales  charge
purchases.  In addition, the ongoing Class B and Class C account maintenance and
distribution  fees will cause Class B and Class C shares to have higher  expense
ratios,  pay lower dividends and have lower total returns than the initial sales
charge shares.  The ongoing Class D account  maintenance fees will cause Class D
shares to have a higher  expense  ratio,  pay lower  dividends  and have a lower
total return than Class A shares.

     The  term  "purchase,"  as used in the  Prospectus  and this  Statement  of
Additional  Information in connection  with an investment in Class A and Class D
shares  of  the  Fund,  refers  to a  single  purchase  by an  individual  or to
concurrent  purchases,  which  in  the  aggregate  are  at  least  equal  to the
prescribed amounts, by an individual, his or her spouse and their children under
the age of 21 years  purchasing  shares for his, her or their own account and to
single purchases by a trustee or other fiduciary  purchasing shares for a single
trust estate or single  fiduciary  account although more than one beneficiary is
involved.  The term "purchase" also includes purchases by any "company," as that
term is defined in the Investment Company Act, but does not include purchases by
any such company that has not been in existence for at least six months or which
has no purpose  other than the purchase of shares of the Fund or shares of other
registered investment companies at a discount;  provided, however, that


                                       18
<PAGE>

it  shall  not  include  purchases  by  any  group  of  individuals  whose  sole
organizational  nexus is that the participants therein are credit cardholders of
a company,  policyholders of an insurance company, customers of either a bank or
broker-dealer or clients of an investment adviser.


Eligible Class A Investors


     Class A shares are offered to a limited group of investors and also will be
issued upon reinvestment of dividends on outstanding  Class A shares.  Investors
who  currently  own Class A shares in a  shareholder  account  are  entitled  to
purchase  additional Class A shares of the Fund in that account.  Class A shares
are available at net asset value to corporate  warranty  insurance  reserve fund
programs and U.S.  branches of foreign  banking  institutions  provided that the
program or bank has $3  million or more  initially  invested  in Select  Pricing
Funds. Also eligible to purchase Class A shares in a shareholder  account at net
asset value are participants in certain  investment  programs  including TMA(SM)
Managed  Trusts to which  Merrill  Lynch Trust  Company  provides  discretionary
trustee  services,  collective  investment  trusts for which Merrill Lynch Trust
Company serves as trustee and certain  purchases made in connection with certain
fee-based programs.  In addition,  Class A shares are offered at net asset value
to ML & Co.  and its  subsidiaries  and their  directors  and  employees  and to
members of the Boards of MLAM/FAM-advised investment companies.  Certain persons
who  acquired  shares  of  certain  MLAM/FAM-advised  closed-end  funds in their
initial  offerings  who wish to reinvest the net  proceeds  from a sale of their
closed-end  fund shares of common  stock in shares of the Fund also may purchase
Class A shares of the Fund if certain  conditions are met. In addition,  Class A
shares of the Fund and certain  other  Select  Pricing  Funds are offered at net
asset value to  shareholders  of Merrill Lynch Senior  Floating Rate Fund,  Inc.
and, if certain  conditions are met, to  shareholders of Merrill Lynch Municipal
Strategy Fund, Inc. and Merrill Lynch High Income  Municipal Bond Fund, Inc. who
wish to  reinvest  the net  proceeds  from a sale of certain of their  shares of
common stock pursuant to a tender offer conducted by such funds in shares of the
Fund and certain other Select Pricing Funds.


Class A and Class D Sales Charge Information

<TABLE>
<CAPTION>

                                                 Class A Shares
          ---------------------------------------------------------------------------------------------
          For the Fiscal Year    Gross Sales     Sales Charges   Sales Charges       CDSCs Received on
                 Ended             Charges        Retained By       Paid To            Redemption of
               July 31,           Collected       Distributor    Merrill Lynch      Load-Waived Shares
           -----------------     ----------      ------------    ------------       ------------------
           <S>                   <C>             <C>             <C>                <C>
                1999               $6,076           $  327          $5,749                  $0
                1998               $1,234           $  345          $  889                  $0
                1997               $3,792           $2,092          $1,700                  $0


<CAPTION>

                                                 Class D Shares
          ---------------------------------------------------------------------------------------------
          For the Fiscal Year    Gross Sales     Sales Charges   Sales Charges       CDSCs Received on
                 Ended             Charges        Retained By       Paid To            Redemption of
               July 31,           Collected       Distributor    Merrill Lynch      Load-Waived Shares
           -----------------     ----------      ------------    ------------       ------------------
           <S>                   <C>             <C>             <C>                <C>
                1999               $22,735           $515           $22,220                 $0
                1998               $ 8,657           $732           $ 7,925                 $0
                1997               $ 4,018           $339           $ 3,679                 $0
</TABLE>

     The  Distributor may reallow  discounts to selected  dealers and retain the
balance over such  discounts.  At times the  Distributor  may reallow the entire
sales charge to such dealers. Since securities dealers selling Class A and Class
D shares  of the Fund  will  receive  a  concession  equal to most of the  sales
charge, they may be deemed to be underwriters under the Securities Act.


Reduced Initial Sales Charges

     Reductions in or exemptions  from the imposition of a sales load are due to
the nature of the investors and/or the reduced sales efforts that will be needed
to obtain such investments.

     Reinvested Dividends. No initial sales charges are imposed upon Class A and
Class D shares issued as a result of the automatic reinvestment of dividends.

     Right of Accumulation. Reduced sales charges are applicable through a right
of accumulation  under which eligible investors are permitted to purchase shares
of the Fund subject to an initial sales charge at the offering



                                       19
<PAGE>

price  applicable  to the total of (a) the public  offering  price of the shares
then being  purchased  plus (b) an amount  equal to the then  current  net asset
value or cost,  whichever is higher, of the purchaser's combined holdings of all
classes of shares of the Fund and of any other  Select  Pricing  Funds.  For any
such  right  of  accumulation  to be made  available,  the  Distributor  must be
provided at the time of purchase, by the purchaser or the purchaser's securities
dealer,  with sufficient  information to permit  confirmation of  qualification.
Acceptance of the purchase order is subject to such  confirmation.  The right of
accumulation  may be amended or terminated at any time.  Shares held in the name
of a nominee  or  custodian  under  pension,  profit-sharing  or other  employee
benefit  plans may not be combined with other shares to qualify for the right of
accumulation.

     Letter of  Intent.  Reduced  sales  charges  are  applicable  to  purchases
aggregating  $25,000 or more of the Class A or Class D shares of the Fund or any
Select  Pricing  Funds made  within a 13-month  period  starting  with the first
purchase pursuant to a Letter of Intent.  The Letter of Intent is available only
to  investors  whose  accounts  are  established  and  maintained  at the Fund's
Transfer Agent.  The Letter of Intent is not available to employee benefit plans
for which Merrill Lynch provides plan participant  recordkeeping  services.  The
Letter of Intent is not a binding  obligation  to purchase any amount of Class A
or Class D shares;  however, its execution will result in the purchaser paying a
lower sales charge at the  appropriate  quantity  purchase level. A purchase not
originally  made  pursuant  to a  Letter  of  Intent  may be  included  under  a
subsequent  Letter of Intent  executed  within 90 days of such  purchase  if the
Distributor is informed in writing of this intent within such 90-day period. The
value of  Class A and  Class D shares  of the Fund and of other  Select  Pricing
Funds presently held, at cost or maximum  offering price  (whichever is higher),
on the date of the first purchase under the Letter of Intent, may be included as
a credit  toward the  completion  of such Letter,  but the reduced  sales charge
applicable  to the amount  covered by such  Letter  will be applied  only to new
purchases. If the total amount of shares does not equal the amount stated in the
Letter of Intent  (minimum of $25,000),  the investor  will be notified and must
pay, within 20 days of the expiration of such Letter, the difference between the
sales charge on the Class A or Class D shares  purchased at the reduced rate and
the sales charge applicable to the shares actually purchased through the Letter.
Class A or Class D shares equal to at least 5.0% of the intended  amount will be
held in escrow  during the 13-month  period (while  remaining  registered in the
name of the purchaser) for this purpose.  The first purchase under the Letter of
Intent must be at least 5.0% of the dollar amount of such Letter.  If a purchase
during the term of such Letter would  otherwise be subject to a further  reduced
sales charge based on the right of accumulation,  the purchaser will be entitled
on that  purchase and  subsequent  purchases to the further  reduced  percentage
sales charge that would be  applicable to a single  purchase  equal to the total
dollar  value of the Class A or Class D shares then being  purchased  under such
Letter,  but there will be no  retroactive  reduction of the sales charge on any
previous purchase.

     The value of any shares redeemed or otherwise  disposed of by the purchaser
prior to termination or completion of the Letter of Intent will be deducted from
the total  purchases  made under such Letter.  An exchange  from the Summit Cash
Reserves  Fund  into the Fund that  creates a sales  charge  will  count  toward
completing a new or existing Letter of Intent from the Fund.

     TMA(SM)  Managed  Trusts.  Class A shares are offered at net asset value to
TMA(SM)   Managed   Trusts  to  which  Merrill  Lynch  Trust  Company   provides
discretionary trustee services.

     Employee Access(SM) Accounts.  Provided applicable  threshold  requirements
are met,  either  Class A or Class D shares are  offered  at net asset  value to
Employee Access(SM) Accounts available through authorized employers. The initial
minimum  investment for such accounts is $500,  except that the initial  minimum
investment  for shares  purchased  for such  accounts  pursuant to the Automatic
Investment Program is $50.


     Purchase  Privilege of Certain Persons.  Trustees of the Trust,  members of
the Boards of other  MLAM/FAM-advised  funds, ML & Co. and its subsidiaries (the
term  "subsidiaries,"  when used herein with respect to ML & Co., includes MLAM,
FAM  and  certain  other  entities  directly  or  indirectly  wholly  owned  and
controlled  by ML & Co.) and  their  directors  and  employees,  and any  trust,
pension,  profit-sharing  or other benefit plan for such  persons,  may purchase
Class A shares of the Fund at net asset value.  The Fund  realizes  economies of
scale and reduction of  sales-related  expenses by virtue of the  familiarity of
these  persons with the Fund.  Employees  and  directors or trustees  wishing to
purchase shares of the Fund must satisfy the Fund's suitability standards.


     Class D shares of the Fund are offered at net asset value,  without a sales
charge,  to an  investor  that  has a  business  relationship  with a  Financial
Consultant  who joined  Merrill  Lynch from another  investment  firm within


                                       20
<PAGE>

six months  prior to the date of purchase  by such  investor,  if the  following
conditions are satisfied:  first, the investor must advise Merrill Lynch that it
will  purchase  Class D shares of the Fund with  proceeds  from a redemption  of
shares  of a  mutual  fund  that was  sponsored  by the  Financial  Consultant's
previous  firm and was subject to a sales charge  either at the time of purchase
or on a deferred  basis;  and,  second,  the investor must  establish  that such
redemption  had been made within 60 days prior to the investment in the Fund and
the proceeds from the redemption had been maintained in the interim in cash or a
money market fund.

     Class D shares of the Fund are also offered at net asset  value,  without a
sales  charge,  to an investor that has a business  relationship  with a Merrill
Lynch Financial Consultant and that has invested in a mutual fund sponsored by a
non-Merrill  Lynch  company  for which  Merrill  Lynch has  served as a selected
dealer and where  Merrill  Lynch has either  received or given  notice that such
arrangement  will be  terminated  ("notice")  if the  following  conditions  are
satisfied:  first,  the investor must  purchase  Class D shares of the Fund with
proceeds from a redemption of shares of such other mutual fund and the shares of
such other fund were subject to a sales charge either at the time of purchase or
on a deferred basis;  and, second,  such purchase of Class D shares must be made
within 90 days after such notice.

     Class D shares of the Fund are offered at net asset value,  without a sales
charge,  to an investor  that has a business  relationship  with a Merrill Lynch
Financial  Consultant  and that has invested in a mutual fund for which  Merrill
Lynch  has not  served as a  selected  dealer if the  following  conditions  are
satisfied:  first,  the investor must advise Merrill Lynch that it will purchase
Class D shares of the Fund with proceeds  from the  redemption of shares of such
other mutual fund and that such shares have been  outstanding for a period of no
less than six months;  and, second, such purchase of Class D shares must be made
within 60 days after the redemption and the proceeds from the redemption must be
maintained in the interim in cash or a money market fund.

     Closed-End Fund Investment  Option.  Class A shares of the Fund and certain
other Select Pricing Funds  ("Eligible Class A Shares") are offered at net asset
value to  shareholders  of certain  closed-end  funds advised by FAM or MLAM who
purchased  such  closed-end  fund shares prior to October 21, 1994 (the date the
Merrill  Lynch  Select  Pricing(SM)  System  commenced  operations)  and wish to
reinvest the net proceeds from a sale of their  closed-end fund shares of common
stock in  Eligible  Class A  Shares,  if the  conditions  set  forth  below  are
satisfied. Alternatively, closed-end fund shareholders who purchased such shares
on or after  October 21, 1994 and wish to reinvest the net proceeds  from a sale
of their  closed-end  fund shares are offered Class A shares (if eligible to buy
Class A shares)  or Class D shares of the Fund and other  Select  Pricing  Funds
("Eligible  Class D Shares"),  if the following  conditions are met. First,  the
sale of closed-end fund shares must be made through  Merrill Lynch,  and the net
proceeds  therefrom  must  be  immediately  reinvested  in  Eligible  Class A or
Eligible Class D Shares.  Second,  the  closed-end  fund shares must either have
been acquired in the initial public offering or be shares representing dividends
from shares of common stock  acquired in such  offering.  Third,  the closed-end
fund shares must have been continuously maintained in a Merrill Lynch securities
account. Fourth, there must be a minimum purchase of $250 to be eligible for the
investment option.


     Shareholders of certain  MLAM/FAM-advised  continuously  offered closed-end
funds may  reinvest at net asset value the net  proceeds  from a sale of certain
shares of common  stock of such funds in shares of the Fund.  Upon  exercise  of
this investment option, shareholders of Merrill Lynch Senior Floating Rate Fund,
Inc. will receive Class A shares of the Fund and  shareholders  of Merrill Lynch
Municipal Strategy Fund, Inc. and Merrill Lynch High Income Municipal Bond Fund,
Inc. will receive Class D shares of the Fund, except that  shareholders  already
owning Class A shares of the Fund will be eligible to purchase  additional Class
A shares pursuant to this option, if such additional Class A shares will be held
in the same  account as the existing  Class A shares and the other  requirements
pertaining  to the  reinvestment  privilege  are met. In order to exercise  this
investment  option,  a shareholder of one of the  above-referenced  continuously
offered  closed-end  funds (an  "eligible  fund") must sell his or her shares of
common stock of the eligible fund (the  "eligible  shares") back to the eligible
fund in  connection  with a tender  offer  conducted  by the  eligible  fund and
reinvest the proceeds immediately in the designated class of shares of the Fund.
This  investment  option is available only with respect to eligible shares as to
which no Early Withdrawal Charge or CDSC (each as defined in the eligible fund's
prospectus)  is  applicable.  Purchase  orders from eligible  fund  shareholders
wishing to exercise this investment option will be accepted only on the day that
the related tender offer  terminates and will be effected at the net asset value
of the designated class of the Fund on such day.



                                       21
<PAGE>

     Acquisition of Certain Investment Companies.  Class D shares may be offered
at net asset value in connection with the acquisition of the assets of or merger
or  consolidation  with a  personal  holding  company  or a  public  or  private
investment company.

Deferred Sales Charge Alternatives -- Class B and Class C Shares

     Investors choosing the deferred sales charge  alternatives  should consider
Class B shares if they  intend to hold their  shares for an  extended  period of
time and  Class C shares  if they are  uncertain  as to the  length of time they
intend to hold their assets in Select Pricing Funds.

     Because no initial  sales charges are deducted at the time of the purchase,
Class B and Class C shares  provide the benefit of putting all of the investor's
dollars to work from the time the  investment is made. The deferred sales charge
alternatives may be particularly  appealing to investors that do not qualify for
the  reduction  in initial  sales  charges.  Both Class B and Class C shares are
subject to ongoing account maintenance fees and distribution fees; however,  the
ongoing account  maintenance and distribution  fees potentially may be offset to
the extent any return is realized on the additional funds initially  invested in
Class B or Class C shares.  In addition,  Class B shares will be converted  into
Class D shares of the Fund after a conversion period of approximately ten years,
and thereafter investors will be subject to lower ongoing fees.

     The  public  offering  price of Class B and  Class C shares  for  investors
choosing the deferred sales charge alternatives is the next determined net asset
value  per  share  without  the  imposition  of a sales  charge  at the  time of
purchase. See "Pricing of Shares -- Determination of Net Asset Value" below.


Contingent Deferred Sales Charges -- Class B Shares

     Class B shares  that are  redeemed  within  four years of  purchase  may be
subject to a CDSC at the rates set forth below  charged as a  percentage  of the
dollar amount subject thereto.  In determining whether a CDSC is applicable to a
redemption, the calculation will be determined in the manner that results in the
lowest  applicable rate being charged.  The charge will be assessed on an amount
equal to the  lesser of the  proceeds  of  redemption  or the cost of the shares
being redeemed.  Accordingly,  no CDSC will be imposed on increases in net asset
value above the initial purchase price. In addition, no CDSC will be assessed on
shares  derived  from  reinvestment  of  dividends.  It will be assumed that the
redemption  is first of  shares  held for over  four  years or  shares  acquired
pursuant to reinvestment of dividends and then of shares held longest during the
four-year  period. A transfer of shares from a shareholder's  account to another
account will be assumed to be made in the same order as a redemption.

     The following table sets forth the Class B CDSC:
                                                           CDSC as a Percentage
                                                             of Dollar Amount
       Year Since Purchase Payment Made                      Subject to Charge
       -------------------------------                       ----------------
       0-1 ..................................................       4.0%
       1-2 ..................................................       3.0%
       2-3 ..................................................       2.0%
       3-4 ..................................................       1.0%
       4 and thereafter .....................................      None

     To provide an example,  assume an investor  purchased 100 shares at $10 per
share (at a cost of $1,000) and in the third year after purchase,  the net asset
value per share is $12 and,  during  such time,  the  investor  has  acquired 10
additional shares upon dividend reinvestment. If at such time the investor makes
his or her first  redemption of 50 shares (proceeds of $600), 10 shares will not
be  subject to a CDSC  because of  dividend  reinvestment.  With  respect to the
remaining 40 shares,  the charge is applied only to the original cost of $10 per
share and not to the  increase  in net asset  value of $2 per share.  Therefore,
$400 of the $600  redemption  proceeds  will be  charged  at a rate of 2.0% (the
applicable rate in the third year after purchase).

     The  Class B CDSC  may be  waived  on  redemptions  of  shares  in  certain
circumstances,  including any partial or complete redemption following the death
or disability (as defined in the Internal  Revenue Code of 1986, as amended (the
"Code")) of a Class B shareholder  (including one who owns the Class B shares as
joint  tenant with his or her  spouse),  provided  the  redemption  is requested
within one year of the death or initial determination of disability or, if late,
reasonably,  promptly,  following completion of probate. The Class B CDSC may be
waived


                                       22
<PAGE>

or its terms may be modified in connection with certain fee-based programs.  The
Class B CDSC may also be waived in connection with involuntary termination of an
account in which Fund  shares are held or for  withdrawals  through  the Merrill
Lynch  Systematic  Withdrawal  Plan.  See  "Shareholder  Services  --  Fee-Based
Programs" and "-- Systematic Withdrawal Plan."


     Conversion  of Class B Shares to Class D Shares.  After  approximately  ten
years (the "Conversion Period"),  Class B shares will be converted automatically
into  Class D shares of the  Fund.  Class D shares  are  subject  to an  ongoing
account maintenance fee of 0.10% of average daily net assets but are not subject
to the distribution fee that is borne by Class B shares. Automatic conversion of
Class B shares  into Class D shares  will occur at least once each month (on the
"Conversion Date") on the basis of the relative net asset value of the shares of
the two classes on the  Conversion  Date,  without the  imposition  of any sales
load,  fee or other charge.  Conversion of Class B shares to Class D shares will
not be deemed a purchase or sale of the shares for Federal income tax purposes.

     In addition,  shares purchased through reinvestment of dividends on Class B
shares also will convert  automatically  to Class D shares.  The Conversion Date
for  dividend  reinvestment  shares will be  calculated  taking into account the
length of time the shares  underlying  such  dividend  reinvestment  shares were
outstanding. If at the Conversion Date the conversion of Class B shares to Class
D shares of the Fund in a single  account  will result in less than $50 worth of
Class B shares being left in the account,  all of the Class B shares of the Fund
held in the account on the  Conversion  Date will be converted to Class D shares
of the Fund.

     In general,  Class B shares of equity  Select  Pricing  Funds will  convert
approximately  eight years after initial  purchase and Class B shares of taxable
and tax-exempt fixed income Select Pricing Funds will convert  approximately ten
years after initial  purchase.  If, during the Conversion  Period, a shareholder
exchanges Class B shares with an eight-year Conversion Period for Class B shares
with a  ten-year  Conversion  Period,  or  vice  versa,  the  Conversion  Period
applicable  to the Class B shares  acquired in the  exchange  will apply and the
holding period for the shares  exchanged will be tacked on to the holding period
for the  shares  acquired.  The  Conversion  Period  also  may be  modified  for
investors  that  participate in certain  fee-based  programs.  See  "Shareholder
Services -- Fee-Based Programs."

     Class  B  shareholders  of  the  Fund  exercising  the  exchange  privilege
described under "Shareholder Services -- Exchange Privilege" will continue to be
subject to the Fund's  CDSC  schedule  if such  schedule is higher than the CDSC
schedule relating to the Class B shares acquired as a result of the exchange.

     Share  certificates  for Class B shares of the Fund to be converted must be
delivered to the Transfer Agent at least one week prior to the  Conversion  Date
applicable to those shares.  In the event such  certificates are not received by
the Transfer Agent at least one week prior to the  Conversion  Date, the related
Class B shares will convert to Class D shares on the next  scheduled  Conversion
Date after such certificates are delivered.

Contingent Deferred Sales Charges -- Class C Shares

     Class C shares that are redeemed within one year of purchase may be subject
to a 1.0% CDSC charged as a percentage of the dollar amount subject thereto.  In
determining  whether  a  Class  C  CDSC  is  applicable  to  a  redemption,  the
calculation will be determined in the manner that results in the lowest possible
rate being charged. The charge will be assessed on an amount equal to the lesser
of the  proceeds  of  redemption  or the  cost  of the  shares  being  redeemed.
Accordingly,  no Class C CDSC will be imposed on  increases  in net asset  value
above the initial purchase price. In addition,  no Class C CDSC will be assessed
on shares derived from  reinvestment  of dividends.  It will be assumed that the
redemption is first of shares held for over one year or shares acquired pursuant
to reinvestment of dividends and then of shares held longest during the one-year
period.  A transfer of shares from a  shareholder's  account to another  account
will be assumed to be made in the same order as a  redemption.  The Class C CDSC
may be waived in connection with involuntary  termination of an account in which
Fund  shares are held and  withdrawals  through  the  Merrill  Lynch  Systematic
Withdrawal Plan. See "Shareholder  Services -- Systematic  Withdrawal Plan." The
Class C CDSC of the Fund and certain  other Select  Pricing  Funds may be waived
with respect to Class C shares purchased by an investor with the net proceeds of
a tender  offer made by  certain  MLAM/FAM-advised  closed end funds,  including
Merrill  Lynch Senior  Floating Rate Fund II, Inc. Such waiver is subject to the
requirement  that the tendered shares shall have been held by the investor for a
minimum  of one  year  and to such  other  conditions  as are set  forth  in the
prospectus for the related closed end fund.



                                       23
<PAGE>

Class B and Class C Sales Charge Information

                                    Class B Shares*
            ---------------------------------------------------------------
            For the Fiscal Year        CDSCs Received         CDSCs Paid to
              Ended July 31,           by Distributor         Merrill Lynch
            -----------------         ---------------       --------------
                  1999                   $ 78,116              $ 78,116
                  1998                   $ 74,940              $ 74,940
                  1997                   $108,809              $108,809

- ----------------
*  Additional  Class B CDSCs payable to the  Distributor may have been waived or
   converted to a  contingent  obligation  in  connection  with a  shareholder's
   participation in certain fee-based programs.

                                     Class C Shares
             ---------------------------------------------------------------
             For the Fiscal Year        CDSCs Received         CDSCs Paid to
               Ended July 31,           by Distributor         Merrill Lynch
             -----------------         ---------------       --------------
                   1999                     $ 557                 $ 557
                   1998                     $ 200                 $ 200
                   1997                    $2,010                $2,010


     Merrill Lynch compensates its Financial Consultants for selling Class B and
Class C shares at the time of  purchase  from its own funds.  Proceeds  from the
CDSC and the  distribution fee are paid to the Distributor and are used in whole
or in part by the  Distributor  to defray the  expenses  of  dealers  (including
Merrill Lynch) related to providing distribution-related services to the Fund in
connection with the sale of the Class B and Class C shares,  such as the payment
of compensation to financial  consultants for selling Class B and Class C shares
from the  dealer's  own  funds.  The  combination  of the  CDSC and the  ongoing
distribution  fee  facilitates  the  ability of the Fund to sell the Class B and
Class C shares  without a sales charge  being  deducted at the time of purchase.
See "Distribution Plans" below.  Imposition of the CDSC and the distribution fee
on  Class B and  Class C  shares  is  limited  by the  National  Association  of
Securities   Dealers,   Inc.   ("NASD")   asset-based  sales  charge  rule.  See
"Limitations on the Payment of Deferred Sales Charges" below.


Distribution Plans

     Reference  is made to "Fees and  Expenses"  in the  Prospectus  for certain
information with respect to the separate distribution plans for Class B, Class C
and Class D shares pursuant to Rule 12b-1 under the Investment Company Act (each
a  "Distribution   Plan")  with  respect  to  the  account   maintenance  and/or
distribution  fees  paid by the Fund to the  Distributor  with  respect  to such
classes.

     The  Distribution  Plans  for  Class B,  Class C and  Class D  shares  each
provides that the Fund pays the Distributor an account  maintenance fee relating
to the shares of the relevant  class,  accrued  daily and paid  monthly,  at the
annual rates of 0.25%, 0.25% and 0.10%,  respectively,  of the average daily net
assets of the Fund  attributable  to shares  of the  relevant  class in order to
compensate the Distributor and Merrill Lynch  (pursuant to a  sub-agreement)  in
connection with account maintenance  activities with respect to Class B, Class C
and Class D shares.  Each of those  classes  has  exclusive  voting  rights with
respect to the Distribution  Plan adopted with respect to such class pursuant to
which account maintenance and/or distribution fees are paid (except that Class B
shareholders  may vote upon any material  changes to expenses  charged under the
Class D Distribution Plan).

     The  Distribution  Plans for Class B and Class C shares each  provides that
the Fund also pays the Distributor a distribution  fee relating to the shares of
the relevant class, accrued daily and paid monthly, at the annual rates of 0.25%
and  0.35%,  respectively,   of  the  average  daily  net  assets  of  the  Fund
attributable  to the shares of the  relevant  class in order to  compensate  the
Distributor  and Merrill  Lynch  (pursuant  to a  sub-agreement)  for  providing
shareholder and distribution  services and bearing certain  distribution-related
expenses of the Fund,  including  payments to financial  consultants for selling
Class B and Class C shares of the Fund. The Distribution Plans relating to Class
B and Class C shares are designed to permit an investor to purchase  Class B and
Class C shares through dealers without the assessment of an initial sales charge
and at the same time permit the dealer to compensate  its financial  consultants
in connection with the sale of the Class B and Class C shares.

     The Fund's  Distribution  Plans are subject to the provisions of Rule 12b-1
under the Investment  Company Act. In their  consideration of each  Distribution
Plan,  the Trustees  must  consider all factors  they deem  relevant,  including
information  as to the  benefits of the  Distribution  Plan to the Fund and each
related class of


                                       24
<PAGE>

shareholders.  Each  Distribution  Plan further  provides  that,  so long as the
Distribution   Plan  remains  in  effect,   the  selection  and   nomination  of
non-interested   Trustees   shall  be  committed  to  the   discretion   of  the
non-interested  Trustees then in office.  In approving each Distribution Plan in
accordance with Rule 12b-1, the non-interested  Trustees concluded that there is
reasonable  likelihood that each Distribution Plan will benefit the Fund and its
related class of shareholders.  Each  Distribution Plan can be terminated at any
time, without penalty, by the vote of a majority of the non-interested  Trustees
or by the vote of the holders of a majority of the outstanding  related class of
voting securities of the Fund. A Distribution Plan cannot be amended to increase
materially  the  amount  to be spent by the Fund  without  the  approval  of the
related class of  shareholders  and all material  amendments  are required to be
approved by the vote of  Trustees,  including  a majority of the  non-interested
Trustees who have no direct or indirect  financial  interest in the Distribution
Plan,  cast in person at a meeting  called for that purpose.  Rule 12b-1 further
requires that the Fund preserve copies of the  Distribution  Plan and any report
made pursuant to such plan for a period of not less than six years from the date
of the  Distribution  Plan or such  report,  the  first  two  years in an easily
accessible place.

     Among other things,  each  Distribution  Plan provides that the Distributor
shall  provide  and  the  Trustees  shall  review   quarterly   reports  of  the
disbursement of the account  maintenance  and/or  distribution  fees paid to the
Distributor.  Payments under the Distribution Plans are based on a percentage of
average daily net assets  attributable to the shares regardless of the amount of
expenses  incurred  and,  accordingly,  distribution-related  revenues  from the
Distribution  Plans  may be  more or less  than  distribution-related  expenses.
Information  with respect to the  distribution-related  revenues and expenses is
presented to the  Trustees  for their  consideration  in  connection  with their
deliberations  as to the  continuance  of the Class B and  Class C  Distribution
Plans annually,  as of December 31 of each year, on a "fully allocated  accrual"
basis and quarterly on a "direct expense and  revenue/cash"  basis. On the fully
allocated  accrual  basis,  revenues  consist of the account  maintenance  fees,
distribution  fees, the CDSCs and certain other related  revenues,  and expenses
consist  of  financial  consultant  compensation,  branch  office  and  regional
operation center selling and transaction processing expenses, advertising, sales
promotion and marketing  expenses,  corporate overhead and interest expense.  On
the direct  expense  and  revenue/cash  basis,  revenues  consist of the account
maintenance  fees,  distribution  fees and CDSCs  and the  expenses  consist  of
financial consultant compensation.

     As of December 31, 1998,  the last date for which fully  allocated  accrual
data is available,  the fully allocated  accrual expenses of the Distributor and
Merrill  Lynch for the period since the  commencement  of  operations of Class B
shares exceeded the fully allocated  accrual revenues by approximately  $885,000
(1.78% of Class B net assets at that  date).  As of July 31,  1999,  direct cash
revenues for the period since the  commencement  of operations of Class B shares
exceeded direct cash expenses by $1,616,641 (3.78% of Class B net assets at that
date). As of December 31, 1998, the fully allocated accrual expenses incurred by
the  Distributor  and Merrill  Lynch for the period  since the  commencement  of
operations of Class C shares  exceeded the fully allocated  accrual  revenues by
approximately  $6,000 (.43% of Class C net assets at that date).  As of July 31,
1999,  direct cash revenues for the period since the  commencement of operations
of Class C shares exceeded direct cash expenses by $19,512 (1.96% of Class C net
assets at that date).


     For the  fiscal  year ended July 31,  1999,  the Fund paid the  Distributor
$242,098  pursuant to the Class B Distribution  Plan (based on average daily net
assets  subject  to  such  Class B  Distribution  Plan  of  approximately  $48.6
million),  all of  which  was  paid  to  Merrill  Lynch  for  providing  account
maintenance and distribution-related  activities and services in connection with
Class B shares.  For the  fiscal  year ended  July 31,  1999,  the Fund paid the
Distributor  $7,491 pursuant to the Class C Distribution  Plan (based on average
daily net assets subject to such Class C Distribution Plan of approximately $1.3
million),  all of  which  was  paid  to  Merrill  Lynch  for  providing  account
maintenance and distribution-related  activities and services in connection with
Class C shares.  For the  fiscal  year ended  July 31,  1999,  the Fund paid the
Distributor  $3,633 pursuant to the Class D Distribution  Plan (based on average
daily net assets subject to such Class D Distribution Plan of approximately $3.6
million),  all of  which  was  paid  to  Merrill  Lynch  for  providing  account
maintenance  activities in connection  with Class D shares.


Limitations on the Payment of Deferred Sales Charges

     The maximum  sales  charge rule in the Conduct  Rules of the NASD imposes a
limitation on certain asset-based sales charges such as the distribution fee and
the CDSC borne by the Class B and Class C shares but not the account maintenance
fee.  The maximum  sales  charge rule is applied  separately  to each class.  As
applicable  to the Fund,  the maximum  sales charge rule limits the aggregate of
distribution fee payments and CDSCs payable


                                       25
<PAGE>

by the Fund to (1) 6.25% of  eligible  gross sales of Class B shares and Class C
shares,  computed  separately  (defined  to exclude  shares  issued  pursuant to
dividend  reinvestments and exchanges),  plus (2) interest on the unpaid balance
for the respective class,  computed  separately,  at the prime rate plus 1% (the
unpaid balance being the maximum amount payable minus amounts  received from the
payment of the  distribution  fee and the CDSC).  In connection with the Class B
shares,  the Distributor has voluntarily agreed to waive interest charges on the
unpaid  balance in excess of 0.50% of eligible  gross sales.  Consequently,  the
maximum  amount  payable  to the  Distributor  (referred  to as  the  "voluntary
maximum")  in  connection  with the  Class B shares is 6.75% of  eligible  gross
sales. The Distributor retains the right to stop waiving the interest charges at
any time. To the extent  payments would exceed the voluntary  maximum,  the Fund
will not make further  payments of the  distribution fee with respect to Class B
shares and any CDSCs will be paid to the Fund  rather  than to the  Distributor;
however, the Fund will continue to make payments of the account maintenance fee.
In certain  circumstances  the amount payable pursuant to the voluntary  maximum
may exceed the amount  payable  under the NASD  formula.  In such  circumstances
payment in excess of the amount payable under the NASD formula will not be made.

     The following table sets forth comparative  information as of July 31, 1999
with  respect  to the  Class B and  Class C shares  of the Fund  indicating  the
maximum allowable  payments that can be made under the NASD maximum sales charge
rule  and,  with  respect  to the Class B shares,  the  Distributor's  voluntary
maximum.

<TABLE>
<CAPTION>

                                                        Data Calculated as of July 31, 1999
                           --------------------------------------------------------------------------------------------------------
                                                                  (in thousands)
                                                                                                                          Annual
                                                                                                                       Distribution
                                                                     Allowable                  Amounts                   Fee at
                                        Eligible      Allowable     Interest on   Maximum     Previously    Aggregate   Current Net
                                         Gross        Aggregate       Unpaid      Amount       Paid to       Unpaid       Asset
                                        Sales(1)   Sales Charges(2)  Balance(3)   Payable    Distributor(4)  Balance      Level(5)
                                        -------   ----------------  -----------  ---------  -------------   ---------    ---------
<S>                                     <C>       <C>               <C>          <C>        <C>             <C>          <C>
Class B Shares for the period
  November 29, 1991  (commencement of
  operations) to July 31, 1999
Under NASD Rule as Adopted .........    $113,805        $7,123        $4,010        $11,133      $2,357        $8,776      $107
Under Distributor's Voluntary Waiver    $113,805        $7,123        $  560        $ 7,683      $2,357        $5,326      $107
Class C Shares, for the period
   October 21, 1994 (commencement of
   operations) to July 31, 1999
Under NASD Rule as Adopted .........    $  2,534        $  158        $   51        $   209      $   21        $  188      $  3
</TABLE>
- ------------
(1)  Purchase  price of all  eligible  Class B or Class C shares sold during the
     periods indicated other than shares acquired through dividend  reinvestment
     and the exchange privilege.

(2)  Includes  amounts  attributable to exchanges from Summit Cash Reserves Fund
     ("Summit")  which are not  reflected  in Eligible  Gross  Sales.  Shares of
     Summit can only be purchased by exchange  from another fund (the  "redeemed
     fund").  Upon such an exchange,  the maximum allowable sales charge payment
     to the  redeemed  fund is  reduced  in  accordance  with the  amount of the
     redemption. this amount is then added to the maximum allowable sales charge
     payment  with  respect  to Summit.  Upon an  exchange  out of  Summit,  the
     remaining  balance of this  amount is deducted  from the maximum  allowable
     sales  charge  payment to Summit and added to the maximum  allowable  sales
     charge payment to the fund into which the exchange is made.

(3)  Interest  is computed  on a monthly  basis  based upon the prime  rate,  as
     reported in The Wall Street Journal, plus 1.0%, as permitted under the NASD
     Rule.

(4)  Consists of CDSC  payments,  distribution  fee payments and  accruals.  See
     "What are the Fund's fees and expenses?" in the Prospectus. This figure may
     include CDSCs that were deferred when a shareholder  redeemed  shares prior
     to the expiration of the applicable  CDSC period and invested the proceeds,
     without the imposition of a sales charge,  in Class A shares in conjunction
     with the  shareholder's  participation  in the  Merrill  Lynch  Mutual Fund
     Advisor  (Merrill Lynch MFA(SM)) Program (the "MFA  Program").  The CDSC is
     booked as a contingent  obligation  that may be payable if the  shareholder
     terminates participation in the MFA Program.

(5)  Provided  to   illustrate   the  extent  to  which  the  current  level  of
     distribution  fee payments (not  including any CDSC payments) is amortizing
     the  unpaid  balance.  No  assurance  can be  given  that  payments  of the
     distribution  fee will reach either the voluntary  maximum (with respect to
     Class B shares) or the NASD  maximum  (with  respect to Class B and Class C
     shares).


                              REDEMPTION OF SHARES

     Reference is made to "How to Buy,  Sell,  Transfer and Exchange  Shares" in
the Prospectus.

     The Fund is required to redeem for cash all shares of the Fund upon receipt
of a written request in proper form. The redemption price is the net asset value
per  share  next  determined  after the  initial  receipt  of  proper  notice of
redemption.  Except for any CDSC that may be applicable, there will be no charge
for redemption if the redemption request is sent directly to the Transfer Agent.
Shareholders  liquidating  their  holdings  will  receive  upon  redemption  all
dividends reinvested through the date of redemption.


                                       26
<PAGE>


     The right to redeem  shares or to receive  payment with respect to any such
redemption  may be suspended for more than seven days only for any period during
which  trading  on the  New  York  Stock  Exchange  ("NYSE")  is  restricted  as
determined by the Commission or the NYSE is closed (other than customary weekend
and  holiday  closings),  for any period  during  which an  emergency  exists as
defined by the Commission as a result of which disposal of portfolio  securities
or  determination  of the  net  asset  value  of  the  Fund  is  not  reasonably
practicable,  and for such other periods as the  Commission  may by order permit
for the protection of shareholders of the Fund.

     The value of shares at the time of redemption  may be more or less than the
shareholder's cost, depending in part on the market value of the securities held
by the Fund at such time.

Redemption

     A shareholder  wishing to redeem shares held with the Transfer Agent may do
so without  charge by tendering  the shares  directly to the  Transfer  Agent at
Financial Data Services, Inc., P.O. Box 45289, Jacksonville, Florida 32232-5289.
Redemption  requests  delivered  other  than  by mail  should  be  delivered  to
Financial Data Services, Inc., 4800 Deer Lake Drive East, Jacksonville,  Florida
32246-6484. Proper notice of redemption in the case of shares deposited with the
Transfer Agent may be  accomplished by a written letter  requesting  redemption.
Proper notice of redemption  in the case of shares for which  certificates  have
been issued may be accomplished  by a written letter as noted above  accompanied
by certificates for the shares to be redeemed. Redemption requests should not be
sent  to  the  Fund.  The  redemption  request  in  either  event  requires  the
signature(s) of all persons in whose name(s) the shares are  registered,  signed
exactly  as  such  name(s)  appear(s)  on the  Transfer  Agent's  register.  The
signatures  on the  redemption  request may require a guarantee  by an "eligible
guarantor  institution" as defined in Rule 17Ad-15 under the Securities Exchange
Act of 1934 (the  "Exchange  Act"),  the  existence and validity of which may be
verified by the Transfer Agent through the use of industry publications.  In the
event  a  signature  guarantee  is  required,   notarized   signatures  are  not
sufficient.  In general,  signature guarantees are waived on redemptions of less
than  $50,000 as long as the  following  requirements  are met: (i) all requests
require the  signature(s) of all persons in whose name(s) shares are recorded on
the  Transfer  Agent's  register;  (ii) all checks must be mailed to the stencil
address of record on the Transfer Agent's register and (iii) the stencil address
must not have changed within 30 days.  Certain rules may apply regarding certain
account  types such as but not limited to UGMA/UTMA  accounts,  Joint  Tenancies
With Rights of  Survivorship,  contra  broker  transactions,  and  institutional
accounts.  In certain  instances,  the  Transfer  Agent may  require  additional
documents such as, but not limited to, trust  instruments,  death  certificates,
appointments  as  executor  or  administrator,   or  certificates  of  corporate
authority. For shareholders redeeming directly with the Transfer Agent, payments
will be mailed within seven days of receipt of a proper notice of redemption.


     At various  times the Fund may be requested  to redeem  shares for which it
has not yet received good payment (e.g.,  cash, Federal funds or certified check
drawn on a U.S. bank).  The Fund may delay or cause to be delayed the mailing of
a  redemption  check until such time as it has assured  itself that good payment
(e.g.,  cash,  Federal funds or certified  check drawn on a U.S.  bank) has been
collected for the purchase of such Fund shares, which will not usually exceed 10
days.

Repurchase

     The Fund also will repurchase  Fund shares through a  shareholder's  listed
securities  dealer.  The Fund normally  will accept  orders to  repurchase  Fund
shares by wire or telephone  from  dealers for their  customers at the net asset
value next computed after the order is placed.  Shares will be priced at the net
asset value  calculated  on the day the request is received,  provided  that the
request for repurchase is submitted to the dealer prior to the close of business
on the NYSE  (generally,  the NYSE closes at 4:00 p.m.,  Eastern  time) and such
request is received by the Fund from such dealer not later than 30 minutes after
the  close  of  business  on  the  NYSE  on  the  same  day.  Dealers  have  the
responsibility of submitting such repurchase requests to the Fund not later than
30 minutes  after the close of  business  on the NYSE,  in order to obtain  that
day's closing price.

     The  foregoing   repurchase   arrangements   are  for  the  convenience  of
shareholders  and do not involve a charge by the Fund (other than any applicable
CDSC).  Securities  firms that do not have selected  dealer  agreements with the
Distributor,  however,  may impose a transaction  charge on the  shareholder for
transmitting the notice of repurchase to the Fund.  Merrill Lynch may charge its
customers a processing fee  (presently  $5.35) to confirm a repurchase of shares
to such  customers.  Repurchases  made  directly  through the Transfer  Agent on
accounts held


                                       27
<PAGE>

at the Transfer Agent are not subject to the  processing  fee. The Fund reserves
the right to reject any order for  repurchase,  which right of  rejection  might
adversely  affect   shareholders   seeking  redemption  through  the  repurchase
procedure.  However, a shareholder whose order for repurchase is rejected by the
Fund may redeem Fund shares as set forth above.

Reinstatement Privilege -- Class A and Class D Shares

     Shareholders  who have redeemed their Class A or Class D shares of the Fund
have a privilege to reinstate  their  accounts by purchasing  Class A or Class D
shares,  as the case may be,  of the Fund at net  asset  value  without  a sales
charge up to the dollar  amount  redeemed.  The  reinstatement  privilege may be
exercised  by sending a notice of exercise  along with a check for the amount to
be  reinstated  to the Transfer  Agent within 30 days after the date the request
for  redemption  was  accepted  by  the  Transfer  Agent  or  the   Distributor.
Alternatively,   the  reinstatement  privilege  may  be  exercised  through  the
investor's Merrill Lynch Financial  Consultant within 30 days after the date the
request for redemption  was accepted by the Transfer  Agent or the  Distributor.
The reinstatement  will be made at the net asset value per share next determined
after the notice of  reinstatement  is received and cannot  exceed the amount of
the redemption proceeds.


                                PRICING OF SHARES

Determination of Net Asset Value

     Reference is made to "How Shares are Priced" in the Prospectus.

     The net asset value of the shares of all classes of the Fund is  determined
by the Manager once daily Monday  through  Friday after the close of business on
the NYSE on each day the NYSE is open for trading.  The NYSE generally closes at
4:00 p.m.,  Eastern  time.  The NYSE is not open for  trading on New Year's Day,
Martin  Luther  King,  Jr. Day,  Presidents'  Day,  Good Friday,  Memorial  Day,
Independence Day, Labor Day, Thanksgiving Day and Christmas Day.

     Net asset value is computed by dividing the value of the securities held by
the Fund plus any cash or other assets (including interest and dividends accrued
but not yet received) minus all liabilities  (including accrued expenses) by the
total number of shares  outstanding  at such time,  rounded to the nearest cent.
Expenses, including the fees payable to the Manager and Distributor, are accrued
daily.


     The per  share  net  asset  value of Class  B,  Class C and  Class D shares
generally  will be lower  than the per share net asset  value of Class A shares,
reflecting the daily expense accruals of the account  maintenance,  distribution
and higher  transfer  agency fees applicable with respect to Class B and Class C
shares,  and  the  daily  expense  accruals  of  the  account  maintenance  fees
applicable with respect to the Class D shares; moreover, the per share net asset
value of the Class B and  Class C shares  generally  will be lower  than the per
share net asset value of Class D shares reflecting the daily expense accruals of
the distribution fees and higher transfer agency fees applicable with respect to
Class B and Class C shares of the Fund. The per share net asset value of Class C
shares  will  generally  be lower than the per share net asset  value of Class B
shares  reflecting the daily expense  accruals of the higher  distribution  fees
applicable with respect to Class C shares. It is expected, however, that the per
share net asset value of the four  classes will tend to converge  (although  not
necessarily meet) immediately after the payment of dividends,  which will differ
by  approximately  the amount of the expense accrual  differentials  between the
classes.

     The  Arizona  Municipal  Bonds and  Municipal  Bonds  and  other  portfolio
securities  in which the Fund invests are traded  primarily in  over-the-counter
("OTC")  municipal  bond and money markets and are valued at the last  available
bid  price  for long  positions  and at the last  available  ask price for short
positions  in the OTC market or on the basis of yield  equivalents  as  obtained
from one or more dealers that make  markets in the  securities.  One bond is the
"yield  equivalent"  of another  bond when,  taking into account  market  price,
maturity,  coupon rate,



                                       28
<PAGE>

credit rating and ultimate  return of principal,  both bonds will  theoretically
produce an equivalent return to the bondholder.  Financial futures contracts and
options thereon,  which are traded on exchanges,  are valued at their settlement
prices  as of  the  close  of  such  exchanges.  Short-term  investments  with a
remaining  maturity  of 60 days or less are  valued on an  amortized  cost basis
which  approximates  market  value.  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  Trustees of the Trust,  including
valuations furnished by a pricing service retained by the Trust, which may use 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.

Computation of Offering Price Per Share

     An illustration of the computation of the offering price for Class A, Class
B,  Class C and Class D shares of the Fund  based on the value of the Fund's net
assets and number of shares outstanding on July 31, 1999 is set forth below.

<TABLE>
<CAPTION>


                                                 Class A           Class B          Class C         Class D
                                              -------------   ---------------    ------------   ---------------
<S>                                           <C>             <C>                <C>            <C>
Net Assets ................................     $12,974,723       $42,758,521        $996,249        $4,052,763
                                              =============   ===============    ============   ===============
Number of Shares Outstanding ..............       1,232,559         4,061,761          94,698           385,353
                                              =============   ===============    ============   ===============
Net Asset Value Per Share (net assets
  divided by number of shares
  outstanding) ............................     $     10.53       $     10.53        $  10.52        $    10.52
Sales Charge (for Class A and Class D
  shares: 4.00% of offering price; 4.17%
  of net asset value per share)* ..........             .44                **              **               .44
                                              =============   ===============    ============   ===============
Offering Price ............................     $     10.97       $     10.53        $  10.52        $    10.96
                                              =============   ===============    ============   ===============
</TABLE>



- -------------
 * Rounded to the nearest one-hundredth percent; assumes maximum sales charge is
   applicable.

** Class B and Class C shares are not subject to an initial sales charge but may
   be subject to a CDSC on  redemption  of shares.  See  "Purchase  of Shares --
   Deferred  Sales  Charge  Alternatives  --  Class  B and  Class  C  Shares  --
   Contingent  Deferred  Sales  Charges -- Class B Shares"  and " --  Contingent
   Deferred Sales Charges -- Class C Shares" herein.


                             PORTFOLIO TRANSACTIONS

Transactions  in Portfolio Securities

     Subject to policies  established by the Trustees,  the Manager is primarily
responsible for the execution of the Fund's  portfolio  transactions.  The Trust
has no  obligation  to deal with any dealer or group of dealers in the execution
of transactions in portfolio  securities of the Fund. Where possible,  the Trust
deals  directly  with the dealers who make a market in the  securities  involved
except in those  circumstances  where better  prices and execution are available
elsewhere.  It is the  policy  of the  Trust  to  obtain  the  best  results  in
conducting portfolio transactions for the Fund, taking into account such factors
as price (including the applicable dealer spread or commission),  the size, type
and difficulty of the  transaction  involved,  the firm's general  execution and
operations  facilities  and  the  firm's  risk  in  positioning  the  securities
involved.  The  portfolio  securities  of the Fund  generally  are  traded  on a
principal  basis and normally do not involve  either  brokerage  commissions  or
transfer  taxes.  The  cost of  portfolio  securities  transactions  of the Fund
primarily   consists  of  dealer  or  underwriter   spreads.   While  reasonable
competitive  spreads or commissions are sought, the Fund will not necessarily be
paying the lowest spread or commission  available.  Transactions with respect to
the  securities  of small and  emerging  growth  companies in which the Fund may
invest may involve specialized  services on the part of the broker or dealer and
thereby  entail  higher  commissions  or  spreads  than  would be the case  with
transactions involving more widely traded securities.

     Subject to obtaining the best net results, dealers who provide supplemental
investment  research  (such as  information  concerning  tax-exempt  securities,
economic  data and market  forecasts)  to the  Manager  may  receive  orders for
transactions by the Fund. Information so received will be in addition to and not
in lieu of the  services  required  to be  performed  by the  Manager  under its
Management  Agreement  and the expense of the Manager  will not  necessarily  be
reduced  as  a  result  of  the  receipt  of  such   supplemental   information.
Supplemental investment research obtained from such dealers might be used by the
Manager in servicing all of its accounts and all such research might not be used
by the Manager in connection with the Fund. Consistent with the Conduct Rules of


                                       29
<PAGE>

the NASD and policies  established by the Trustees of the Trust, the Manager may
consider  sales of shares of the Fund as a factor in the selection of brokers or
dealers to execute portfolio transactions for the Fund.

     Because of the  affiliation of Merrill Lynch with the Manager,  the Fund is
prohibited  from  engaging in certain  transactions  involving  such firm or its
affiliates  except pursuant to an exemptive  order under the Investment  Company
Act. Included among such restricted  transactions are purchases from or sales to
Merrill Lynch of securities in transactions in which it acts as principal. Under
an exemptive  order, the Trust may effect  principal  transactions  with Merrill
Lynch in high quality,  short-term,  tax-exempt securities subject to conditions
set forth in such order. Information regarding transactions executed pursuant to
the exemptive order is set forth in the following table:

<TABLE>
<CAPTION>


                                                        Number of        Approximate Aggregate
            Fiscal Year Ended July 31,                Transactions   Market Value of Transactions
            --------------------------                ------------   ----------------------------
     <S>                                              <C>            <C>
     1999 ...........................................       0                  $         0
     1998 ...........................................       1                  $ 2,100,000
     1997 ...........................................       0                  $         0
</TABLE>


     An  affiliated  person of the Trust may serve as broker for the Fund in OTC
transactions  conducted on an agency basis.  Certain court decisions have raised
questions as to the extent to which investment  companies should seek exemptions
under the Investment Company Act in order to seek to recapture  underwriting and
dealer  spreads from  affiliated  entities.  The Trustees  have  considered  all
factors deemed relevant and have made a determination not to seek such recapture
at this time. The Trustees will reconsider this matter from time to time.

     The Fund may not purchase securities, including Municipal Bonds, during the
existence of any underwriting syndicate of which Merrill Lynch is a member or in
a private  placement in which  Merrill  Lynch  serves as placement  agent except
pursuant to procedures approved by the Trustees of the Trust which either comply
with rules adopted by the Commission or with  interpretations  of the Commission
staff.  Rule 10f-3 under the Investment  Company Act sets forth conditions under
which the Fund may purchase  Municipal Bonds from an  underwriting  syndicate of
which Merrill Lynch is a member. The rule sets forth  requirements  relating to,
among other things,  the terms of an issue of Municipal  Bonds  purchased by the
Fund,  the amount of Municipal  Bonds that may be purchased in any one issue and
the assets of the Fund that may be invested in a particular issue.

     Section 11(a) of the Exchange Act generally  prohibits  members of the U.S.
national  securities  exchanges from executing  exchange  transactions for their
affiliates and institutional accounts that they manage unless the member (i) has
obtained   prior  express   authorization   from  the  account  to  effect  such
transactions,  (ii) at least  annually  furnishes  the account  with a statement
setting  forth the  aggregate  compensation  received by the member in effecting
such  transactions,  and  (iii)  complies  with any  rules  the  Commission  has
prescribed  with  respect to the  requirements  of clauses (i) and (ii).  To the
extent  Section  11(a) would apply to Merrill  Lynch  acting as a broker for the
Fund  in any of its  portfolio  transactions  executed  on any  such  securities
exchange of which it is a member,  appropriate  consents have been obtained from
the Fund and annual statements as to aggregate  compensation will be provided to
the Fund. Securities may be held by, or be appropriate investments for, the Fund
as well as other funds or investment advisory clients of the Manager or MLAM.

     Because of different objectives or other factors, a particular security may
be bought for one or more  clients of the  Manager or an  affiliate  when one or
more clients of the Manager or an affiliate  are selling the same  security.  If
purchases or sales of securities  arise for  consideration  at or about the same
time that would involve the Fund or other clients or funds for which the Manager
or an affiliate acts as manager  transactions  in such  securities will be made,
insofar as feasible,  for the  respective  funds and clients in a manner  deemed
equitable  to all.  To the extent that  transactions  on behalf of more than one
client of the Manager or an  affiliate  during the same period may  increase the
demand for securities  being  purchased or the supply of securities  being sold,
there may be an adverse effect on price.


                              SHAREHOLDER SERVICES

     The Trust  offers a number of  shareholder  services and  investment  plans
described  below that are  designed to  facilitate  investment  in shares of the
Fund. Full details as to each of such services,  copies of the various plans and
instructions  as to how to participate in the various  services or plans, or how
to change  options  with  respect  thereto,  can be obtained  from the Fund,  by
calling the telephone  number on the cover page hereof,  or from the Distributor
or Merrill Lynch.


                                       30
<PAGE>

Investment Accounts

     Each  shareholder  whose account is maintained at the Transfer Agent has an
Investment  Account and will receive  statements,  at least quarterly,  from the
Transfer Agent.  These  statements will serve as transaction  confirmations  for
automatic investment purchases and the reinvestment of dividends. The statements
will also show any other activity in the account since the preceding  statement.
Shareholders will also receive separate  confirmations for each purchase or sale
transaction  other than automatic  investment  purchases and the reinvestment of
dividends.  A  shareholder  with an account held at the Transfer  Agent may make
additions  to his or her  Investment  Account  at any  time by  mailing  a check
directly to the  Transfer  Agent.  A  shareholder  may also  maintain an account
through  Merrill  Lynch.  Upon the  transfer  of shares  out of a Merrill  Lynch
brokerage account, an Investment Account in the transferring  shareholder's name
may be opened automatically at the Transfer Agent.

     Share  certificates  are  issued  only for full  shares  and only  upon the
specific  request of a shareholder  who has an Investment  Account.  Issuance of
certificates  representing  all or only part of the full shares in an Investment
Account may be requested by a shareholder directly from the Transfer Agent.

     Shareholders  may transfer  their Fund shares from Merrill Lynch to another
securities dealer that has entered into a selected dealer agreement with Merrill
Lynch.  Certain  shareholder  services may not be available for the  transferred
shares.  After the transfer,  the shareholder may purchase  additional shares of
funds owned before the  transfer and all future  trading of these assets must be
coordinated  by the new firm.  If a  shareholder  wishes to transfer  his or her
shares to a  securities  dealer  that has not  entered  into a  selected  dealer
agreement with Merrill Lynch,  the shareholder must either (i) redeem his or her
shares,  paying any  applicable  CDSC or (ii) continue to maintain an Investment
Account at the Transfer Agent for those shares. The shareholder may also request
the new  securities  dealer to maintain the shares in an account at the Transfer
Agent  registered  in the name of the  securities  dealer for the benefit of the
shareholder  whether the  securities  dealer has entered into a selected  dealer
agreement or not.

Exchange Privilege

     U.S.  shareholders  of each  class of shares  of the Fund have an  exchange
privilege  with certain other Select Pricing Funds and Summit Cash Reserves Fund
("Summit"),  a series of Financial Institutions Series Trust, which is a Merrill
Lynch-sponsored  money  market  fund  specifically  designated  for  exchange by
holders of Class A, Class B, Class C and Class D shares of Select Pricing Funds.
Shares with a net asset  value of at least $100 are  required to qualify for the
exchange privilege and any shares utilized in an exchange must have been held by
the shareholder for at least 15 days. Before effecting an exchange, shareholders
should  obtain a  currently  effective  prospectus  of the fund  into  which the
exchange is to be made.  Exercise of the exchange privilege is treated as a sale
of the exchanged shares and a purchase of the acquired shares for Federal income
tax purposes.

     Exchanges of Class A and Class D Shares.  Class A shareholders may exchange
Class A shares of the Fund for Class A shares of a second Select Pricing Fund if
the  shareholder  holds  any  Class A shares  of the  second  fund in his or her
account  in  which  the  exchange  is made at the  time  of the  exchange  or is
otherwise eligible to purchase Class A shares of the second fund. If the Class A
shareholder  wants to  exchange  Class A shares  for  shares of a second  Select
Pricing Fund,  but does not hold Class A shares of the second fund in his or her
account at the time of the  exchange  and is not  otherwise  eligible to acquire
Class A shares of the second fund, the  shareholder  will receive Class D shares
of the  second  fund as a result  of the  exchange.  Class D shares  also may be
exchanged for Class A shares of a second Select Pricing Fund at any time as long
as, at the time of the  exchange,  the  shareholder  holds Class A shares of the
second  fund in the  account  in  which  the  exchange  is made or is  otherwise
eligible  to  purchase  Class A shares of the  second  fund.  Class D shares are
exchangeable with shares of the same class of other Select Pricing Funds.

     Exchanges of Class A or Class D shares outstanding ("outstanding Class A or
Class D shares") for Class A or Class D shares of other Select  Pricing Funds or
for Class A shares of Summit,  ("new Class A or Class D shares") are  transacted
on the  basis  of  relative  net  asset  value  per  Class A or  Class D  share,
respectively,  plus an amount equal to the difference, if any, between the sales
charge  previously  paid on the  outstanding  Class A or Class D shares  and the
sales  charge  payable at the time of the exchange on the new Class A or Class D
shares.  With  respect  to  outstanding  Class A or Class D  shares  as to which
previous  exchanges have taken place,  the "sales charge  previously paid" shall
include the  aggregate of the sales charges paid with respect to such Class A


                                       31
<PAGE>

or Class D shares in the initial purchase and any subsequent  exchange.  Class A
or Class D shares issued pursuant to dividend reinvestment are sold on a no-load
basis in each of the funds offering  Class A or Class D shares.  For purposes of
the exchange  privilege,  Class A or Class D shares  acquired  through  dividend
reinvestment  shall be deemed to have been sold with a sales charge equal to the
sales  charge  previously  paid on the  Class A or Class D shares  on which  the
dividend was paid.  Based on this formula,  Class A and Class D shares generally
may be exchanged into the Class A or Class D shares, respectively,  of the other
funds with a reduced sales charge or without a sales charge.


     Exchanges of Class B and Class C Shares.  Certain Select Pricing Funds with
Class B or Class C shares outstanding  ("outstanding Class B or Class C shares")
offer to exchange their Class B or Class C shares for Class B or Class C shares,
respectively,  of certain  other Select  Pricing  Funds or for Class B shares of
Summit  ("new  Class B or Class C shares")  on the basis of  relative  net asset
value per Class B or Class C share,  without  the payment of any CDSC that might
otherwise be due on redemption of the outstanding  shares.  Class B shareholders
of the Fund exercising the exchange privilege will continue to be subject to the
Fund's CDSC schedule if such schedule is higher than the CDSC schedule  relating
to the new Class B shares  acquired  through use of the exchange  privilege.  In
addition,  Class B  shares  of the Fund  acquired  through  use of the  exchange
privilege will be subject to the Fund's CDSC schedule if such schedule is higher
than the CDSC schedule relating to the Class B shares of the fund from which the
exchange has been made.  For purposes of computing  the CDSC that may be payable
on a disposition  of the new Class B or Class C shares,  the holding  period for
the  outstanding  Class B or Class C shares is "tacked" to the holding period of
the new Class B or Class C shares. For example, an investor may exchange Class B
shares of the Fund for those of Merrill Lynch Special Value Fund, Inc. ("Special
Value  Fund")  after  having  held the Fund's  Class B shares for two and a half
years. The 2% CDSC that generally would apply to a redemption would not apply to
the  exchange.  Three years later the  investor may decide to redeem the Class B
shares of Special Value Fund and receive cash. There will be no CDSC due on this
redemption,  since by "tacking"  the two and a half year holding  period of Fund
Class B shares to the three-year holding period for the Special Value Fund Class
B shares,  the investor will be deemed to have held the Special Value Fund Class
B shares for more than five years.

     Exchanges for Shares of a Money Market Fund. Class A and Class D shares are
exchangeable  for Class A shares of  Summit  and Class B and Class C shares  are
exchangeable  for Class B shares  of  Summit.  Class A shares of Summit  have an
exchange  privilege back into Class A or Class D shares of Select Pricing Funds;
Class B shares of Summit have an exchange privilege back into Class B or Class C
shares of Select Pricing Funds and, in the event of such an exchange, the period
of time that Class B shares of Summit are held will count toward satisfaction of
the holding  period  requirement  for  purposes of reducing  any CDSC and toward
satisfaction  of any Conversion  Period with respect to Class B shares.  Class B
shares of Summit  will be subject  to a  distribution  fee at an annual  rate of
0.75% of  average  daily  net  assets  of such  Class B  shares.  This  exchange
privilege  does not apply  with  respect  to  certain  Merrill  Lynch  fee-based
programs for which alternative exchange  arrangements may exist. Please see your
Merrill Lynch Financial Consultant for further information.

     Prior to October 12, 1998, exchanges from the Fund and other Select Pricing
Funds into a money market fund were directed to certain Merrill  Lynch-sponsored
money market funds other than Summit.  Shareholders who exchanged Select Pricing
Fund shares for shares of such other money market funds and subsequently wish to
exchange  those money  market fund shares for shares of the Fund will be subject
to the CDSC schedule  applicable to such Fund shares, if any. The holding period
for those money  market fund shares will not count  toward  satisfaction  of the
holding period  requirement for reduction of the CDSC imposed on such shares, if
any, and, with respect to Class B shares,  toward satisfaction of the Conversion
Period.  However,  the  holding  period  for Class B or Class C shares of a Fund
received in exchange for such money market fund shares will be  aggregated  with
the  holding  period for the fund  shares  originally  exchanged  for such money
market  fund  shares  for  purposes  of  reducing  the  CDSC or  satisfying  the
Conversion Period.


     Exchanges by Participants in the MFA Program. The Fund's exchange privilege
is also  modified  with  respect to  purchases  of Class A and Class D shares by
investors under the MFA Program. First, the initial allocation of assets is made
under the MFA Program.  Then any  subsequent  exchange  under the MFA Program of
Class A or Class D shares of a Select Pricing Fund for Class A or Class D shares
of the Fund will be made solely on the basis of the relative net asset values of
the  shares  being  exchanged.  Therefore,  there  will not be a charge  for any


                                       32
<PAGE>

difference  between the sales charge  previously paid on the shares of the other
Select Pricing Fund and the sales charge payable on the shares of the Fund being
acquired in the exchange under the MFA Program.

     Exercise of the Exchange Privilege.  To exercise the exchange privilege,  a
shareholder  should contact his or her Merrill Lynch Financial  Consultant,  who
will advise the Fund of the exchange. Shareholders of the Fund, and shareholders
of the other Select  Pricing Funds with shares for which  certificates  have not
been  issued,  may  exercise  the  exchange  privilege  by  wire  through  their
securities dealers.  The Fund reserves the right to require a properly completed
Exchange  Application.  This exchange privilege may be modified or terminated in
accordance  with the rules of the  Commission.  The Fund  reserves  the right to
limit the number of times an  investor  may  exercise  the  exchange  privilege.
Certain funds may suspend the continuous offering of their shares to the general
public at any time and may  thereafter  resume such  offering from time to time.
The exchange  privilege is available only to U.S.  shareholders  in states where
the exchange legally may be made. It is contemplated that the exchange privilege
may be applicable to other new mutual funds whose shares may be  distributed  by
the Distributor.

Fee-Based Programs

     Certain Merrill Lynch fee-based  programs,  including pricing  alternatives
for securities transactions (each referred to in this paragraph as a "Program"),
may permit the  purchase of Class A shares at net asset value.  Under  specified
circumstances,  participants  in certain  Programs may deposit  other classes of
shares which will be  exchanged  for Class A shares.  Initial or deferred  sales
charges  otherwise  due in  connection  with  such  exchanges  may be  waived or
modified,  as may the  Conversion  Period  applicable to the  deposited  shares.
Termination of participation in a Program may result in the redemption of shares
held therein or the  automatic  exchange  thereof to another  class at net asset
value, which may be shares of a money market fund. In addition, upon termination
of  participation  in a  Program,  shares  that  have  been  held for less  than
specified  periods  within  such  Program may be subject to a fee based upon the
current value of such shares. These Programs also generally prohibit such shares
from  being  transferred  to  another  account  at  Merrill  Lynch,  to  another
broker-dealer or to the Transfer Agent. Except in limited  circumstances  (which
may also involve an exchange as described  above),  such shares must be redeemed
and another  class of shares  purchased  (which may involve  the  imposition  of
initial or deferred sales charges and distribution and account maintenance fees)
in order for the  investment  not to be  subject  to  Program  fees.  Additional
information  regarding a specific Program  (including charges and limitations on
transferability  applicable  to  shares  that  may be held in such  Program)  is
available in such  Program's  client  agreement  and from the Transfer  Agent at
1-800-MER-FUND or 1-800-637-3863.

Automatic Investment Plans

     A shareholder  may make  additions to an Investment  Account at any time by
purchasing  Class A shares (if he or she is an  eligible  Class A  investor)  or
Class B,  Class C or Class D shares at the  applicable  public  offering  price.
These purchases may be made either through the shareholder's  securities dealer,
or by mail directly to the Transfer  Agent,  acting as agent for such securities
dealer.  Voluntary  accumulation also can be made through a service known as the
Fund's  Automatic  Investment  Plan. The Fund would be authorized,  on a regular
basis,  to  provide  systematic  additions  to the  Investment  Account  of such
shareholder  through  charges of $50 or more to the regular  bank account of the
shareholder by either  pre-authorized checks or automated clearing house debits.
An investor  whose shares of the Fund are held within a CMA(R) or CBA(R) Account
may arrange to have periodic  investments made in the Fund in amounts of $100 or
more through the CMA(R) or CBA(R) Automated Investment Program.

Automatic Dividend Reinvestment Plan


     Unless  specific  instructions  are  given  as to the  method  of  payment,
dividends will be automatically reinvested,  without sales charge, in additional
full and fractional  shares of the Fund.  Such  reinvestment  will be at the net
asset value of shares of the Fund as  determined  after the close of business on
the NYSE on the monthly payment date for such dividends. No CDSC will be imposed
upon  redemption of shares issued as a result of the automatic  reinvestment  of
dividends.


     Shareholders may, at any time, by written  notification to Merrill Lynch if
their account is maintained with Merrill Lynch, or by written notification or by
telephone (1-800-MER-FUND) to the Transfer Agent, if their


                                       33
<PAGE>


account  is  maintained  with  the  Transfer  Agent,  elect  to have  subsequent
dividends  paid in cash,  rather than  reinvested  in shares of the Fund or vice
versa  (provided  that, in the event that a payment on an account  maintained at
the  Transfer  Agent  would  amount to $10.00 or less,  a  shareholder  will not
receive such payment in cash and such payment will  automatically  be reinvested
in  additional  shares).  Commencing  ten days after the receipt by the Transfer
Agent of such  notice,  those  instructions  will be  effected.  The Fund is not
responsible for any failure of delivery to the  shareholder's  address of record
and no interest will accrue on amounts  represented by uncashed dividend checks.
Cash payments can also be directly deposited to the shareholder's bank account.

Systematic Withdrawal Plan

     A shareholder may elect to receive  systematic  withdrawals from his or her
Investment  Account by check or through  automatic  payment by direct deposit to
his or her bank  account  on either a monthly  or  quarterly  basis as  provided
below.  Quarterly  withdrawals are available for shareholders that have acquired
shares of the Fund having a value,  based on cost or the current offering price,
of $5,000 or more, and monthly  withdrawals are available for shareholders  with
shares having a value of $10,000 or more.

     At the time of each withdrawal payment, sufficient shares are redeemed from
those on deposit in the shareholder's  account to provide the withdrawal payment
specified by the shareholder.  The shareholder may specify the dollar amount and
the class of shares to be redeemed.  Redemptions will be made at net asset value
as  determined  after the close of  business  on the NYSE  (generally,  the NYSE
closes at 4:00 p.m., Eastern time) on the 24th day of each month or the 24th day
of the last month of each quarter,  whichever is applicable.  If the NYSE is not
open for  business  on such date,  the shares  will be redeemed at the net asset
value  determined  after  the  close of  business  on the NYSE on the  following
business day. The check for the withdrawal payment will be mailed, or the direct
deposit for withdrawal  payment will be made, on the next business day following
redemption.  When a shareholder is making systematic  withdrawals,  dividends on
all shares in the Investment  Account are automatically  reinvested in shares of
the Fund. A  shareholder's  Systematic  Withdrawal Plan may be terminated at any
time,  without  charge or penalty,  by the  shareholder,  the Fund, the Transfer
Agent or the Distributor.


     With  respect to  redemptions  of Class B or Class C shares  pursuant  to a
systematic withdrawal plan, the maximum number of Class B or Class C shares that
can be redeemed  from an account  annually  shall not exceed 10% of the value of
shares  of such  class in that  account  at the time  the  election  to join the
systematic  withdrawal  plan was made. Any CDSC that  otherwise  might be due on
such  redemption  of Class B or Class C shares will be waived.  Shares  redeemed
pursuant to a systematic  withdrawal  plan will be redeemed in the same order as
Class B or Class C shares are  otherwise  redeemed.  See  "Purchase of Shares --
Deferred  Sales Charge  Alternatives  -- Class B and Class C Shares."  Where the
systematic  withdrawal plan is applied to Class B shares, upon conversion of the
last Class B shares in an account to Class D shares,  the systematic  withdrawal
plan will be applied  thereafter to Class D shares if the shareholder so elects.
If an  investor  wishes to change the amount  being  withdrawn  in a  systematic
withdrawal  plan the investor  should contact his or her Merrill Lynch Financial
Consultant.

     Withdrawal payments should not be considered as dividends.  Each withdrawal
is a taxable  event.  If periodic  withdrawals  continuously  exceed  reinvested
dividends, the shareholder's original investment may be reduced correspondingly.
Purchases of  additional  shares  concurrent  with  withdrawals  are  ordinarily
disadvantageous to the shareholder because of sales charges and tax liabilities.
The Fund will not knowingly  accept  purchase orders for shares of the Fund from
investors  that  maintain a Systematic  Withdrawal  Plan unless such purchase is
equal to at least one  year's  scheduled  withdrawals  or $1,200,  whichever  is
greater.  Automatic  investments  may not be made into an Investment  Account in
which the shareholder has elected to make systematic withdrawals.

     Alternatively,  a  shareholder  whose  shares  are held  within a CMA(R) or
CBA(R)  Account  may elect to have  shares  redeemed  on a  monthly,  bimonthly,
quarterly,  semiannual or annual basis  through the CMA(R) or CBA(R)  Systematic
Redemption  Program.  The minimum  fixed dollar  amount  redeemable  is $50. The
proceeds of systematic  redemptions will be posted to the shareholder's  account
three business days after the date the shares are redeemed.  All redemptions are
made at net asset  value.  A  shareholder  may  elect to have his or her  shares
redeemed on the first, second, third or fourth Monday of each month, in the case
of  monthly  redemptions,  or of every  other  month,  in the case of  bimonthly
redemptions.  For quarterly,  semiannual or annual redemptions,  the shareholder
may select the month in which the shares are to be  redeemed  and may  designate
whether  the  redemption  is to be made on the  first,  second,  third or fourth
Monday  of the  month.  If  the  Monday  selected  is not a  business  day,  the
redemption  will be processed at net asset value on the next  business  day. The
CMA(R) or CBA(R) Systematic  Redemption  Program is not available if Fund shares
are being  purchased  within the account


                                       34
<PAGE>

pursuant to the Automatic Investment Program. For more information on the CMA(R)
or CBA(R) Systematic  Redemption Program,  eligible  shareholders should contact
their Merrill Lynch Financial Consultant.

                               DIVIDENDS AND TAXES
Dividends

     The net investment  income of the Fund is declared as dividends daily prior
to the  determination of the net asset value which is calculated after the close
of business on the NYSE (generally,  the NYSE closes at 4:00 p.m., Eastern time)
on that  day.  The net  investment  income  of the  Fund for  dividend  purposes
consists of interest earned on portfolio securities, less expenses, in each case
computed since the most recent determination of net asset value. Expenses of the
Fund, including the management fees and the account maintenance and distribution
fees, are accrued daily.  Dividends of net investment  income are declared daily
and reinvested  monthly in the form of additional full and fractional  shares of
the Fund at net asset value as of the close of business  on the  "payment  date"
unless the  shareholder  elects to receive such  dividends in cash.  Shares will
accrue dividends as long as they are issued and  outstanding.  Shares are issued
and outstanding from the settlement date of a purchase order to the day prior to
settlement date of a redemption order.

     All net realized capital gains, if any, are declared and distributed to the
Fund's shareholders at least annually. Capital gain dividends will be reinvested
automatically  in shares of the Fund  unless the  shareholder  elects to receive
such dividends in cash.

     The per share dividends on each class of shares will be reduced as a result
of any account maintenance,  distribution and transfer agency fees applicable to
that class. See "Pricing of Shares -- Determination of Net Asset Value."

     See  "Shareholder  Services"  for  information  as to how to  elect  either
dividend reinvestment or cash payments.  Portions of dividends which are taxable
to  shareholders  as described  below are subject to income tax whether they are
reinvested in shares of the Fund or received in cash.

Taxes

     The Trust  intends to  continue  to qualify  the Fund for the  special  tax
treatment  afforded regulated  investment  companies ("RICs") under the Code. As
long as it so qualifies, the Fund (but not its shareholders) will not be subject
to Federal  income  tax to the extent  that it  distributes  its net  investment
income and net realized  capital  gains.  The Trust intends to cause the Fund to
distribute substantially all of such income.

     As discussed in "General  Information  -- Description of Shares," the Trust
has  established  other series in addition to the Fund  (together with the Fund,
the "Series"). Each Series of the Trust is treated as a separate corporation for
Federal  income tax  purposes.  Each Series,  therefore,  is  considered to be a
separate entity in determining its treatment under the rules for RICs. Losses in
one Series do not offset gains in another Series,  and the  requirements  (other
than certain organizational  requirements) for qualifying for RIC status will be
determined at the Series level rather than at the Trust level.

     The Code requires a RIC to pay a nondeductible  4% excise tax to the extent
the RIC does not  distribute,  during each  calendar  year,  98% of its ordinary
income,  determined  on a calendar  year basis,  and 98% of its  capital  gains,
determined,  in general,  on an October 31 year end, plus certain  undistributed
amounts from previous years. The required distributions, however, are based only
on the taxable  income of a RIC. The excise tax,  therefore,  generally will not
apply  to  the  tax-exempt  income  of a  RIC,  such  as  the  Fund,  that  pays
exempt-interest dividends.

     The Trust intends to qualify the Fund to pay "exempt-interest dividends" as
defined in Section 852(b)(5) of the Code. Under such section if, at the close of
each quarter of the Fund's taxable year, at least 50% of the value of the Fund's
total assets consists of obligations exempt from Federal income tax ("tax-exempt
obligations")   under  Section  103(a)  of  the  Code  (relating   generally  to
obligations of a state or local governmental  unit), the Fund shall be qualified
to pay  exempt-interest  dividends  to its Class A, Class B, Class C and Class D
shareholders  (together  the  "shareholders").   Exempt-interest  dividends  are
dividends or any part thereof paid by the Fund that are attributable to interest
on  tax-exempt  obligations  and  designated  by the  Trust  as  exempt-interest
dividends in a written notice mailed to the Fund's  shareholders  within 60 days
after the close of the Fund's taxable year. The Fund will allocate interest from
tax-exempt  obligations  (as well as  ordinary  income,  capital  gains  and tax
preference  items discussed below) among the Class A, Class B, Class C and Class
D shareholders  according to a method (which it believes is consistent  with the
Commission rule permitting the issuance and sale of multiple


                                       35
<PAGE>

classes of shares)  that is based upon the gross income that is allocable to the
Class A, Class B, Class C and Class D  shareholders  during the taxable year, or
such other method as the Internal Revenue Service may prescribe.


     Exempt-interest  dividends will be excludable  from a  shareholder's  gross
income for Federal income tax purposes.  Exempt-interest dividends are included,
however,  in determining the portion,  if any, of a person's social security and
railroad  retirement  benefits  subject to Federal  income  taxes.  Interest  on
indebtedness  incurred or  continued to purchase or carry shares of a RIC paying
exempt-interest  dividends,  such as the  Fund,  will not be  deductible  by the
investor for Federal  income tax purposes and, to the extent of  investments  by
the Fund in Arizona  Municipal  Bonds,  is not deductible for Arizona income tax
purposes. Shareholders are advised to consult their tax advisors with respect to
whether exempt-interest dividends retain the exclusion under Code Section 103(a)
if a shareholder  would be treated as a "substantial  user" or "related  person"
under Code Section 147(a) with respect to property financed with the proceeds of
an issue of "industrial  development bonds" or "private activity bonds," if any,
held by the Fund.


     The  portion of the Fund's  exempt-interest  dividends  paid from  interest
received  by the Fund from  Arizona  Municipal  Bonds  also will be exempt  from
Arizona income taxes.  Shareholders  subject to income  taxation by states other
than  Arizona  will  realize  a lower  after-tax  rate of  return  than  Arizona
shareholders  since the dividends  distributed by the Fund generally will not be
exempt,  to any significant  degree,  from income taxation by such other states.
The Trust will inform shareholders  annually regarding the portion of the Fund's
distributions that constitutes exempt-interest dividends and the portion that is
exempt  from  Arizona  income  taxes.  The Trust will  allocate  exempt-interest
dividends  among Class A, Class B, Class C and Class D shareholders  for Arizona
income  tax  purposes  based on a method  similar  to that  described  above for
Federal income tax purposes.

     Distributions  from  investment  income  and  capital  gains  of the  Fund,
including  exempt-interest  dividends,  may also be  subject  to state  taxes in
states  other  than  Arizona  and may be subject  to local  taxes.  Accordingly,
investors  in the Fund should  consult  their tax  advisors  with respect to the
application of such taxes to the receipt of Fund dividends and to the holding of
shares in the Fund.

     To the extent the Fund's  distributions  are derived  from  interest on its
taxable  investments or from an excess of net short-term  capital gains over net
long-term capital losses ("ordinary income  dividends"),  such distributions are
considered  ordinary  income for Federal  income tax purposes and Arizona income
tax purposes.  Distributions,  if any,  from an excess of net long-term  capital
gains over net short-term  capital losses derived from the sale of securities or
from certain  transactions in futures or options  ("capital gain dividends") are
taxable as long-term  capital gains for Federal income tax purposes,  regardless
of the length of time the  shareholder  has owned Fund  shares,  and for Arizona
income tax  purposes,  are treated as capital  gains which are taxed at ordinary
income tax rates.  Certain  categories of capital gains are taxable at different
rates.  Generally  not later than 60 days after the close of the Fund's  taxable
year, the Trust will provide  shareholders with a written notice designating the
amounts of any exempt-interest  dividends and capital gain dividends, as well as
any amount of capital gain dividends in the different categories of capital gain
referred  to above.  Distributions  by the Fund,  whether  from  exempt-interest
income, ordinary income or capital gains, will not be eligible for the dividends
received deduction allowed to corporations under the Code.

     All or a  portion  of the  Fund's  gains  from  the sale or  redemption  of
tax-exempt  obligations  purchased  at a  market  discount  will be  treated  as
ordinary  income rather than capital gain.  This rule may increase the amount of
ordinary income dividends  received by shareholders.  Distributions in excess of
the Fund's  earnings  and profits  will first reduce the adjusted tax basis of a
holder's  shares and,  after such  adjusted  tax basis is reduced to zero,  will
constitute  capital  gains to such  holder  (assuming  the  shares are held as a
capital  asset).  Any loss upon the sale or exchange of Fund shares held for six
months or less will be disallowed to the extent of any exempt-interest dividends
received by the shareholder.  In addition,  any such loss that is not disallowed
under the rule stated  above will be treated as  long-term  capital  loss to the
extent of any capital gain dividends  received by the  shareholder.  If the Fund
pays a dividend in January which was declared in the previous October,  November
or December to shareholders of record on a specified date in one of such months,
then such  dividend  will be treated for tax  purposes as being paid by the Fund
and  received  by its  shareholders  on  December  31 of the year in which  such
dividend was declared.

     The  Code  subjects  interest  received  on  certain  otherwise  tax-exempt
securities to a Federal  alternative  minimum tax. The  alternative  minimum tax
applies to interest  received on certain  "private  activity bonds" issued after
August 7, 1986. Private activity bonds are bonds which, although tax-exempt, are
used for purposes other than those generally performed by governmental units and
which  benefit  non-governmental  entities  (e.g.,  bonds


                                       36
<PAGE>

used for industrial  development or housing  purposes).  Income received on such
bonds is classified as an item of "tax preference,"  which could subject certain
investors  in such  bonds,  including  shareholders  of the  Fund,  to a Federal
alternative  minimum tax. The Fund will purchase such "private  activity bonds,"
and the Trust will report to shareholders within 60 days after calendar year-end
the portion of the Fund's dividends declared during the year which constitute an
item of tax preference for  alternative  minimum tax purposes.  The Code further
provides  that  corporations  are subject to a Federal  alternative  minimum tax
based,  in part, on certain  differences  between taxable income as adjusted for
other tax preferences and the corporation's  "adjusted current  earnings," which
more closely reflect a corporation's economic income. Because an exempt-interest
dividend  paid by the Fund will be  included  in adjusted  current  earnings,  a
corporate  shareholder may be required to pay a Federal  alternative minimum tax
on exempt-interest dividends paid by the Fund.

     The Fund may invest in high yield  securities,  as described in "Investment
Objective and Policies -- Description of Municipal Bonds." Furthermore, the Fund
may also  invest in  instruments  the return on which  includes  non-traditional
features  such as  indexed  principal  or  interest  payments  ("non-traditional
instruments"). These instruments may be subject to special tax rules under which
the Fund may be  required to accrue and  distribute  income  before  amounts due
under the  obligations  are paid.  In  addition,  it is  possible  that all or a
portion  of  the  interest   payments  on  such  high  yield  securities  and/or
non-traditional instruments could be recharacterized as taxable ordinary income.

     No  gain or  loss  will  be  recognized  by  Class  B  shareholders  on the
conversion of their Class B shares into Class D shares. A shareholder's basis on
the Class D shares acquired will be the same as such shareholder's  basis in the
Class B shares  converted and the holding  period of the acquired Class D shares
will include the holding period for the converted Class B shares.

     If a  shareholder  exercises  an  exchange  privilege  within  90  days  of
acquiring  the  shares,  then the  loss the  shareholder  can  recognize  on the
exchange will be reduced (or the gain  increased) to the extent any sales charge
paid to the Fund reduces any sales charge the  shareholder  would have owed upon
purchase of the new shares in the absence of the  exchange  privilege.  Instead,
such sales charge will be treated as an amount paid for the new shares.

     A loss  realized  on a sale or  exchange  of  shares  of the  Fund  will be
disallowed  if other Fund shares are  acquired  (whether  through the  automatic
reinvestment of dividends or otherwise) within a 61-day period beginning 30 days
before and ending 30 days  after the date that the  shares are  disposed  of. In
such a case,  the basis of the shares  acquired  will be adjusted to reflect the
disallowed loss.

     Ordinary income dividends paid to shareholders that are nonresident  aliens
or foreign entities will be subject to a 30% United States withholding tax under
existing  provisions of the Code applicable to foreign  individuals and entities
unless a reduced  rate of  withholding  or a  withholding  exemption is provided
under applicable treaty law. Nonresident shareholders are urged to consult their
own tax advisors  concerning the applicability of the United States  withholding
tax.

     Under certain provisions of the Code, some shareholders may be subject to a
31%  withholding tax on certain  ordinary  income  dividends and on capital gain
dividends   and   redemption   payments   ("backup   withholding").   Generally,
shareholders  subject to backup  withholding will be those for whom no certified
taxpayer  identification number is on file with the Trust or who, to the Trust's
knowledge,  have furnished an incorrect number. When establishing an account, an
investor  must certify  under penalty of perjury that such number is correct and
that such shareholder is not otherwise subject to backup withholding.

     The Code  provides  that every  person  required  to file a tax return must
include for  information  purposes on such return the amount of  exempt-interest
dividends  received  from all sources  (including  the Fund)  during the taxable
year.

Tax Treatment of Options and Futures Transactions


     The Fund may purchase and sell municipal  bond index futures  contracts and
interest  rate  futures  contracts  on U.S.  Government  securities  ("financial
futures  contracts").  The Fund may also purchase and write call and put options
on such financial futures contracts. In general, unless an election is available
to the Fund or an exception applies, such options and futures contracts that are
"Section  1256  contracts"  will be "marked to market"  for  Federal  income tax
purposes at the end of each  taxable  year (i.e.,  each such option or financial
futures  contract  will be treated as sold for its fair market value on the last
day of the taxable  year),  and any gain



                                       37
<PAGE>


or loss  attributable  to Section 1256  contracts  will be 60% long-term and 40%
short-term  capital  gain or loss.  Application  of these rules to Section  1256
contracts  held by the Fund may alter the timing and character of  distributions
to shareholders.  The  mark-to-market  rules outlined above,  however,  will not
apply to certain transactions entered into by the Fund solely to reduce the risk
of changes in price or interest rates with respect to its investments.

     Code Section  1092,  which applies to certain  "straddles,"  may affect the
taxation of the Fund's sales of securities and transactions in financial futures
contracts and related  options.  Under Section 1092, the Fund may be required to
postpone  recognition  for tax purposes of losses  incurred in certain  sales of
securities and certain closing  transactions in financial  futures  contracts or
the related options.

     Under  present  Arizona law, the Fund is not subject to any Arizona  income
taxation during any fiscal year in which the Fund is classified as a diversified
management  company  under  Section  5 of  the  Invesment  Company  Act  and  is
registered as provided in that Act. The Fund might be subject to Arizona  income
taxation for any taxable year in which it is not so classified and registered.


     The  foregoing  is a general  and  abbreviated  summary  of the  applicable
provisions  of the  Code,  Treasury  regulations  and  Arizona  income  tax laws
presently in effect.  For the complete  provisions,  reference should be made to
the pertinent Code sections, the Treasury regulations promulgated thereunder and
Arizona income tax laws. The Code and the Treasury  regulations,  as well as the
Arizona  tax  laws,   are  subject  to  change  by   legislative,   judicial  or
administrative action either prospectively or retroactively.

     Shareholders  are  urged  to  consult  their  tax  advisers  regarding  the
availability  of any  exemptions  from  state or local  taxes and with  specific
questions as to Federal, foreign, state or local taxes.

                                PERFORMANCE DATA

     From time to time the Fund may include its average  annual total return and
other  total  return  data,  as well  as  yield  and  tax-equivalent  yield,  in
advertisements or information furnished to present or prospective  shareholders.
Total  return,  yield and  tax-equivalent  yield figures are based on the Fund's
historical  performance  and are not  intended to indicate  future  performance.
Average  annual total  return,  yield and  tax-equivalent  yield are  determined
separately  for Class A, Class B, Class C and Class D shares in accordance  with
formulas specified by the Commission.

     Average  annual  total  return  quotations  for the  specified  periods are
computed by finding the average annual  compounded rates of return (based on net
investment  income and any realized and  unrealized  capital  gains or losses on
portfolio  investments  over such periods) that would equate the initial  amount
invested to the redeemable  value of such  investment at the end of each period.
Average annual total return is computed assuming all dividends and distributions
are reinvested and taking into account all applicable recurring and nonrecurring
expenses,  including the maximum sales charge in the case of Class A and Class D
shares and the CDSC that would be  applicable  to a complete  redemption  of the
investment at the end of the specified period in the case of Class B and Class C
shares.

     Yield  quotations will be computed based on a 30-day period by dividing (a)
the net income based on the yield of each  security  earned during the period by
(b) the average daily number of shares  outstanding  during the period that were
entitled to receive dividends multiplied by the maximum offering price per share
on the last day of the period.  Tax equivalent yield quotations will be computed
by dividing (a) the part of the Fund's yield that is tax-exempt by (b) one minus
a stated tax rate and (c) adding the result to that part,  if any, of the Fund's
yield that is not tax-exempt.

     The Fund also may quote annual,  average annual and annualized total return
and  aggregate  total return  performance  data,  both as a percentage  and as a
dollar amount based on a hypothetical  $1,000  investment,  for various  periods
other than those noted  below.  Such data will be computed as  described  above,
except that (1) as required by the  periods of the  quotations,  actual  annual,
annualized or aggregate data, rather than average annual data, may be quoted and
(2) the maximum  applicable  sales  charges will not be included with respect to
annual or annualized rates of return calculations.  Aside from the impact on the
performance data  calculations of including or excluding the maximum  applicable
sales charges,  actual annual or annualized  total return data generally will be
lower than average  annual  total return data since the average  rates of return
reflect  compounding  of return;  aggregate  total return data generally will be
higher than average annual total return data since the aggregate rates of return
reflect compounding over a longer period of time.


                                       38
<PAGE>

     Set forth below is total return, yield and tax-equivalent yield information
for the Class A, Class B, Class C and Class D shares of the Fund for the periods
indicated.

<TABLE>
<CAPTION>


                                                           Class A Shares                  Class B Shares
                                               ----------------------------------- ---------------------------------
                                                 Expressed as     Redeemable Value   Expressed as   Redeemable Value
                                                 a percentage    of a hypothetical   a percentage  of a hypothetical
                                                  based on a     $1,000 investment    based on a   $1,000 investment
                                                 hypothetical      at the end of     hypothetical    at the end of
Period                                         $1,000 investment    the period     $1,000 investment  the period
- ------                                         ----------------- ----------------- ----------------- ---------------
                                                                      Average Annual Total Return
                                                             (including maximum applicable sales charges)
<S>                                            <C>              <C>             <C>             <C>
One Year Ended July 31, 1999................          (1.58%)          $ 984.20        (1.86%)         $ 981.40
Five Years Ended July 31, 1999..............           4.96%          $1,273.80         5.28%         $1,293.60
Inception (November 29, 1991) to
  July 31, 1999.............................           6.20%          $1,586.70         6.23%         $1,589.90
                                                                          Annual Total Return
                                                             (excluding maximum applicable sales charges)
Year ended July 31,
1999........................................           2.52%          $1,025.20         2.01%         $1,020.10
1998........................................           5.25%          $1,052.50         4.71%         $1,047.10
1997........................................           8.63%          $1,086.30         8.08%         $1,080.80
1996........................................           6.04%          $1,060.40         5.49%         $1,054.90
1995........................................           6.76%          $1,067.60         6.22%         $1,062.20
1994........................................           1.62%          $1,016.20         1.11%         $1,011.10
1993........................................           9.62%          $1,096.20         9.07%         $1,090.70
Inception (November 29, 1991) to
   July 31, 1992............................          11.82%          $1,118.20        11.45%         $1,114.50
                                                                         Aggregate Total Return
                                                            (including maximum applicable sales charges)
Inception (November 29, 1991) to
   July 31, 1999............................          58.67%          $1,586.70        58.99%         $1,589.90
                                                                                Yield
30 days ended July 31, 1999.................           4.14%              --            3.80%             --
                                                                       Tax Equivalent Yield*
30 days ended July 31, 1999.................           5.75%              --            5.28%             --
</TABLE>

- -------------
* Based on a Federal income tax rate of 28%.

<TABLE>
<CAPTION>

                                                          Class C Shares                  Class D Shares
                                               ----------------------------------- --------------------------------
                                                 Expressed as     Redeemable Value  Expressed as   Redeemable Value
                                                 a percentage     of a hypothetical a percentage  of a hypothetical
                                                  based on a      $1,000 investment  based on a   $1,000 investment
                                                 hypothetical       at the end of   hypothetical    at the end of
Period                                         $1,000 investment     the period   $1,000 investment  the period
- ------                                         -----------------   -------------- ----------------- ---------------
                                                                      Average Annual Total Return
                                                             (including maximum applicable sales charges)
<S>                                            <C>              <C>             <C>             <C>
One year ended July 31, 1999................           0.85%          $1,008.50        (1.68%)         $ 983.20
Inception (October 21, 1994) to
   July 31, 1999............................           5.91%          $1,315.20         5.55%         $1,294.40
                                                                          Annual Total Return
                                                             (excluding maximum applicable sales charges)
Year Ended July 31,
1999........................................           1.81%          $1,018.10         2.42%         $1,024.20
1998........................................           4.61%          $1,046.10         5.14%         $1,051.40
1997........................................           7.97%          $1,079.70         8.52%         $1,085.20
1996........................................           5.38%          $1,053.80         5.93%         $1,059.30
Inception (October 21, 1994) to
   July 31, 1995............................           8.53%          $1,085.30         8.92%         $1,089.20
                                                                        Aggregate Total Return
                                                             (including maximum applicable sales charges)
Inception (October 21, 1994) to
   July 31, 1999............................          31.52%          $1,315.20        29.44%         $1,294.40
                                                                                 Yield
30 days ended July 31, 1999.................           3.70%              --            4.04%             --
                                                                         Tax Equivalent Yield*
30 days ended July 31, 1999.................           5.14%              --            5.61%             --
</TABLE>


- -----------
* Based on a Federal income tax rate of 28%.


                                       39
<PAGE>

     In order to reflect  the  reduced  sales  charges in the case of Class A or
Class D  shares,  or the  waiver  of the  CDSC in the case of Class B or Class C
shares applicable to certain investors,  as described under "Purchase of Shares"
the total  return  data  quoted by the Fund in  advertisements  directed to such
investors may take into account the reduced,  and not the maximum,  sales charge
or may not take into account the CDSC, and, therefore, may reflect greater total
return since,  due to the reduced sales charges or the waiver of CDSCs,  a lower
amount of expenses may be deducted.


     On occasion,  the Fund may compare its  performance to the Lehman  Brothers
Municipal Bond Index or other market indices or to performance data published by
Lipper   Analytical   Services,    Inc.,    Morningstar    Publications,    Inc.
("Morningstar"),  CDA Investment Technology,  Inc., Money Magazine,  U.S. News &
World Report, Business Week, Forbes Magazine, Fortune Magazine or other industry
publications.  When comparing its  performance  to a market index,  the Fund may
refer to various statistical  measures derived from the historic  performance of
the Fund and the index such as standard  deviation and beta.  In addition,  from
time to time the Fund may include Morningstar  risk-adjusted performance ratings
in  advertisements or supplemental  sales literature.  As with other performance
data, performance  comparisons should not be considered indicative of the Fund's
relative performance for any future period.


     Total return figures are based on the Fund's historical performance and are
not intended to indicate future performance.  The Fund's total return, yield and
tax-equivalent  yield will vary depending on market  conditions,  the securities
comprising the Fund's portfolio, the Fund's operating expenses and the amount of
realized and unrealized net capital gains or losses during the period. The value
of an investment  in the Fund will  fluctuate  and an  investor's  shares,  when
redeemed, may be worth more or less than their original cost.


                               GENERAL INFORMATION

Description of Shares

     The Trust is a business trust organized on August 2, 1985 under the laws of
Massachusetts.  On October 1, 1987,  the Trust  changed  its name from  "Merrill
Lynch  Multi-State  Tax-Exempt  Series  Trust"  to  "Merrill  Lynch  Multi-State
Municipal  Bond Series  Trust," and on December 22, 1987 the Trust again changed
its name to "Merrill Lynch Multi-State  Municipal Series Trust." The Trust is an
open-end  management  investment  company comprised of separate Series,  each of
which is a separate  portfolio offering shares to selected groups of purchasers.
Each of the Series is managed  independently in order to provide to shareholders
who are  residents of the state to which such Series  relates with income exempt
from Federal,  and in certain cases state and local,  income taxes. The Trustees
are authorized to create an unlimited number of Series and, with respect to each
Series, to issue an unlimited number of full and fractional shares of beneficial
interest,  $.10 par value  per  share,  of  different  classes  and to divide or
combine the shares  into a greater or lesser  number of shares  without  thereby
changing the  proportionate  beneficial  interests  in the Series.  The Trust is
presently  comprised of the Fund,  Merrill Lynch  Arkansas  Municipal Bond Fund,
Merrill Lynch Colorado Municipal Bond Fund, Merrill Lynch Connecticut  Municipal
Bond Fund,  Merrill Lynch Florida  Municipal  Bond Fund,  Merrill Lynch Maryland
Municipal Bond Fund,  Merrill Lynch  Massachusetts  Municipal Bond Fund, Merrill
Lynch Michigan Municipal Bond Fund, Merrill Lynch Minnesota Municipal Bond Fund,
Merrill Lynch New Jersey Municipal Bond Fund, Merrill Lynch New Mexico Municipal
Bond Fund,  Merrill  Lynch New York  Municipal  Bond Fund,  Merrill  Lynch North
Carolina  Municipal Bond Fund,  Merrill Lynch Ohio Municipal Bond Fund,  Merrill
Lynch Oregon Municipal Bond Fund, Merrill Lynch Pennsylvania Municipal Bond Fund
and  Merrill  Lynch  Texas  Municipal  Bond Fund.  Shareholder  approval  is not
required for the  authorization  of additional  Series or classes of a Series of
the Trust.

     At the date of this Statement of Additional Information,  the shares of the
Fund are  divided  into Class A,  Class B, Class C and Class D shares.  Class A,
Class B, Class C and Class D shares  represent  interests  in the same assets of
the Fund and are  identical  in all  respects  except  that Class B, Class C and
Class D  shares  bear  certain  expenses  relating  to the  account  maintenance
associated with such shares and Class B and Class C shares bear certain expenses
relating to the distribution of such shares.  All shares of the Trust have equal
voting  rights.  Each class has exclusive  voting rights with respect to matters
relating to distribution and/or account maintenance expenditures,  as applicable
(except that Class B shareholders may vote upon any material changes to expenses


                                       40
<PAGE>

charged  under the Class D  Distribution  Plan).  See  "Purchase of Shares." The
Trustees of the Trust may classify and  reclassify the shares of any Series into
additional or other classes at a future date.

     Each issued and  outstanding  share of a Series is entitled to one vote and
to  participate  equally in  dividends  and  distributions  with respect to that
Series and, upon liquidation or dissolution of the Series,  in the net assets of
such Series remaining after satisfaction of outstanding liabilities except that,
as noted above,  expenses relating to distribution and/or account maintenance of
the Class B,  Class C and  Class D shares  are  borne  solely by the  respective
class.  There  normally will be no meetings of  shareholders  for the purpose of
electing  Trustees  unless and until  such time as less than a  majority  of the
Trustees  holding  office have been elected by  shareholders,  at which time the
Trustees  then in office will call a  shareholders'  meeting for the election of
Trustees.  Shareholders  may, in accordance with the terms of the Declaration of
Trust,  cause a meeting of  shareholders to be held for the purpose of voting on
the  removal of  Trustees.  Also,  the Trust will be  required to call a special
meeting of shareholders  in accordance  with the  requirements of the Investment
Company Act to seek approval of new management and advisory  arrangements,  of a
material increase in distribution fees or a change in the fundamental  policies,
objectives or restrictions of a Series.


     The obligations  and  liabilities of a particular  Series are restricted to
the  assets  of  that  Series  and do not  extend  to the  assets  of the  Trust
generally.  The  shares of each  Series,  when  issued,  will be fully  paid and
nonassessable,  have no  preference,  preemptive,  or similar rights and will be
freely  transferable.  Redemption  and  conversion  privileges  are as set forth
elsewhere  herein and in the Prospectus.  Shares do not have  cumulative  voting
rights and the  holders  of more than 50% of the shares of the Trust  voting for
the  election of Trustees  can elect all of the Trustees if they choose to do so
and in such event the holders of the remaining shares would not be able to elect
any Trustees.  No amendments may be made to the Declaration of Trust, other than
amendments  necessary to conform the Declaration to certain laws or regulations,
to  change  the name of the  Trust,  or to make  certain  non-material  changes,
without  the  affirmative  vote of a majority of the  outstanding  shares of the
Trust, or of the affected Series or class, as applicable.

     The  Declaration  of Trust  establishing  the Trust dated August 2, 1985, a
copy of which,  together with all amendments  thereto (the  "Declaration") is on
file in the  office  of the  Secretary  of the  Commonwealth  of  Massachusetts,
provides that the name "Merrill Lynch Multi-State Municipal Series Trust" refers
to the Trustees  under the  Declaration  collectively  as  Trustees,  but not as
individuals or personally;  and no Trustee,  shareholder,  officer,  employee or
agent of the Trust shall be held to any personal liability;  nor shall resort be
had to their private property for the satisfaction of any obligation or claim of
the Trust,  but the "Trust Property" only shall be liable.  Under  Massachusetts
law, shareholders of a business trust may, under certain circumstances,  be held
personally liable as partners for the trust's obligations.  However, the risk of
a shareholder  incurring  financial loss on account of shareholder  liability is
limited to  circumstances  in which both  inadequate  insurance  existed and the
trust itself was unable to meet its obligations.

     The Manager provided the initial capital for the Fund by purchasing  10,000
shares of the Fund for $100,000.  Such shares were acquired for  investment  and
can only be disposed of by  redemption.  If  additional  Series are added to the
Trust,  the  organizational  expenses  will be  allocated  among the Series in a
manner deemed equitable by the Trustees.

Independent Auditors

     Deloitte & Touche LLP, 117 Campus Drive, Princeton,  New Jersey 08540-6400,
has been  selected as the  independent  auditors of the Trust.  The selection of
independent  auditors is subject to approval by the  non-interested  Trustees of
the Trust.  The  independent  auditors are  responsible  for auditing the annual
financial statements of the Fund.

Custodian

     State  Street  Bank and Trust  Company  (the  "Custodian"),  P. O. Box 351,
Boston,  Massachusetts  02101,  acts as the custodian of the Fund's assets.  The
Custodian is responsible  for  safeguarding  and controlling the Fund's cash and
securities,  handling  the receipt and  delivery of  securities  and  collecting
interest on the Fund's investments.



                                       41
<PAGE>

Transfer Agent

     Financial Data  Services,  Inc.,  4800 Deer Lake Drive East,  Jacksonville,
Florida  32246-6484,  acts as the Trust's  Transfer Agent. The Transfer Agent is
responsible for the issuance, transfer and redemption of shares and the opening,
maintenance  and  servicing  of  shareholder  accounts.  See "How to Buy,  Sell,
Transfer and Exchange Shares -- Through the Transfer Agent" in the Prospectus.

Legal Counsel

     Brown & Wood LLP, One World Trade Center, New York, New York 10048-0557, is
counsel for the Trust.

Reports to Shareholders

     The fiscal  year of the Fund ends on July 31 of each year.  The Trust sends
to the Fund's shareholders,  at least semi-annually,  reports showing the Fund's
portfolio  and  other  information.   An  annual  report,  containing  financial
statements audited by independent  auditors,  is sent to shareholders each year.
After  the end of each  year,  shareholders  will  receive  Federal  income  tax
information regarding dividends and capital gains distributions.


Shareholder Inquiries

     Shareholder  inquiries  may be  addressed  to the  Fund at the  address  or
telephone  number set forth on the cover page of this  Statement  of  Additional
Information.

Additional Information

     The Prospectus and this Statement of Additional  Information do not contain
all the  information  set forth in the  Registration  Statement and the exhibits
relating  thereto,  which the Trust has filed with the  Securities  and Exchange
Commission,  Washington,  D.C.,  under  the  Securities  Act and the  Investment
Company Act, to which reference is hereby made.

     Under a separate  agreement,  ML&Co. has granted the Trust the right to use
the  "Merrill  Lynch" name and has reserved the right to withdraw its consent to
the use of such  name by the  Trust at any time or to grant the use of such name
to any other company, and the Trust has granted ML&Co. under certain conditions,
the use of any other name it might  assume in the  future,  with  respect to any
corporation organized by ML & Co.

     To the  knowledge of the Trust,  the  following  persons or entities  owned
beneficially  5% or more of any class of the  Fund's  shares as of  November  1,
1999:

<TABLE>
<CAPTION>

                                                                                    PERCENTAGE
          NAME                                    ADDRESS                           AND CLASS
- ---------------------------              ------------------------              -----------------
<S>                                      <C>                                   <C>
Shemer Investment Co.                    14829 N. 42nd Pl.                       10.14% of Class A
c/o Martha E. Shemer                     Phoenix, AZ 85032

Geddes Revocable Trust                   2930 E. Camelback Rd. #110              6.56% of Class A
F. Michael Geddes &                      Phoenix, AZ 85016
Sheila P. Geddes, Trustees
UAD 4/5/89

Karen Raskin-Young, Trustee              4403 Rustic Knolls Ln.                  5.00% of Class B
U/A DTD 1/2/98                           Flagstaff, AZ 86004
By Karen Raskin-Young

Miss Roseanne C. Sonchik                 4631 E. Crocus Dr.                      15.61% of Class C
                                         Phoenix, AZ 85032

Elleen Z. Lithall, Trustee               4644 Albert Courtade Rd.                15.09% of Class C
U/A DTD 12/20/94                         Traverse City, MI 49686
By Elleen Z. Lithall

Mr. Lawrence R. McCally                  2931 N. 53rd Pkwy.                      11.43% of Class C
                                         Phoenix, AZ 85031
</TABLE>



                                       42
<PAGE>


<TABLE>
<CAPTION>


                                                                                    PERCENTAGE
            NAME                                   ADDRESS                          AND CLASS
- ------------------------------           -------------------------------         -----------------

<S>                                      <C>                                     <C>
Frances Rosenfeld                        Mt. View Lake Estate                    8.54% of Class C
                                         10050 E. Mt. View Lake Dr. #53
                                         Scottsdale, AZ 85258

Marvin L. Miller, Trustee                13002 W. Tangelo Dr.                    6.46% of Class C
Lesa C. Miller, Trustee                  Sun City West, AZ 85375
3/7/96 by Marvin L. Miller
Lesa C. Miller Rev. Liv. Trust

Eino H. Tuomi and                        3602 Washita Dr.                        5.16% of Class C
Geneva R. Tuomi JTWROS                   Lake Havasu City, AZ 86404


Lori Essig and                           4615 E. Gelding Dr.                     5.1% of Class C
Gregory Essig JTWROS                     Phoenix, AZ 85032


Phyllis Jean Dilworth, Trustee           2830 W. Happy Valley Ln.                5.0% of Class D
U/A DTD 9/30/80                          Benson, AZ 85602
By Phyllis Jean Dilworth Trust
</TABLE>



                              FINANCIAL STATEMENTS

     The Fund's audited financial  statements are incorporated in this Statement
of   Additional   Information   by  reference  to  its  1999  annual  report  to
shareholders.  You may  request  a copy of the  annual  report  at no  charge by
calling (800)  456-4587 ext. 789 between 8:00 a.m. and 8:00 p.m. on any business
day.


                                       43
<PAGE>

                                   APPENDIX I

                  ECONOMIC AND FINANCIAL CONDITIONS IN ARIZONA

     The  following  information  is a brief  summary of factors  affecting  the
economy  of  the  State  of  Arizona  and  does  not  purport  to be a  complete
description of such factors.  Other factors will affect issuers.  The summary is
based primarily upon statistics provided by state agencies and other independent
sources,  however,  it has not been  updated  nor will it be updated  during the
year. The Fund has not independently verified the information.

     Over the past several  decades,  the State's  economy has grown faster than
most other regions of the country as measured by nearly every major indicator of
economic  growth,  including  population,  employment,  and  aggregate  personal
income.  Although the rate of growth slowed  considerably during the late 1980's
and early 1990's,  the State's  efforts to diversify its economy have enabled it
to achieve, and then sustain, steady growth rates in recent years. While jobs in
industries such as mining and agriculture have diminished in relative importance
to the  State's  economy  over the  past two  decades,  substantial  growth  has
occurred  in the  areas of  aerospace,  high  technology,  light  manufacturing,
government and the service industry. Other important industries that contributed
to the State's growth in past years, such as construction and real estate,  have
rebounded  from  substantial  declines  during the late 1980's and early 1990's,
and, like the rest of the State, are experiencing positive growth.

     Arizona's  strong  economy,  warm  climate and  reasonable  cost of living,
coupled with economic problems and adverse climatic conditions  experienced from
time to time in other parts of the country,  have encouraged many people to move
to the State.  Between 1990 and 1998, the State's population increased 21%, to a
total of 4.66 million; during the same period, Maricopa County, the State's most
populous county, had the single largest population inflow (in absolute terms) of
any  county  in  the  country.  Current  State  projections  include  continuing
population  gains  averaging  approximately  2.7%, or 127,000  people,  per year
through the year 2002.

     Part of the State's  popularity  in recent years can be  attributed  to the
favorable  job  climate.  For the  period  from  1993 to 1998,  Arizona  had the
nation's  second  highest job growth rate, up 33% to more than two million jobs;
in 1998,  the State had the  highest job  growth.  Similarly,  for the 12 months
ending in May,  1998,  the City of  Phoenix  ranked  first in the  nation in job
growth  among the 22 largest  metropolitan  areas,  with a 5.8% job growth rate.
Notwithstanding  recent  layoffs at Motorola and Intel,  two large  Phoenix area
employers,  a relatively  sound United  States  economy,  a stronger  economy in
California  (which  historically  has been a prime market for Arizona  goods and
services)  and  continued  growth in retail  trade,  manufacturing  and services
should enable the State to realize  positive,  though more modest,  gains in job
growth in 1998.  Unemployment  has declined  from an average of 5.5% in 1996, to
4.7% in 1997, to 4.3% in September, 1998.

     The  State's  economic  growth in recent  years has  enabled  Arizonans  to
realize  substantial  gains in  personal  income.  While the  State's per capita
personal income  generally  varies between 5% and 15% below the national average
due to such factors as the chronic  poverty of the State's Indian  reservations,
the State's  relatively  high numbers of retirees and children,  and the State's
below-average  wage  scale,  the State's per capita  personal  income  growth of
nearly 5.3% during each of 1996 and 1997 is  projected  to continue  through the
year 2002.

     The gains in per capita  personal  income  during  this  period have led to
continued  steady growth in retail sales. In recent years,  average retail sales
growth  has been as high as 12% (in  1994) and as low as 5% (in  1997),  but has
subsequently averaged approximately 7%.

     The State  government's  fiscal  situation  has improved  substantially  in
recent years.  After experiencing  several years of budget shortfalls  requiring
mid-year  adjustments,  the State has had significant budget surpluses each year
from 1993 to 1998.  However,  during fiscal year 1999, a significant  portion of
the  accumulated  surpluses  were  committed to  construction  and renovation of
public school  facilities,  reducing the  projected  surplus at June 30, 1998 to
approximately  $70 million.  On April 16, 1999, the Governor  signed the State's
$12 billion budget for the 2000 and 2001 fiscal years.  Although an amendment to
the State's  Constitution  requiring a 2/3  majority  vote in both houses of the
Legislature  to pass a tax or fee  increase  constrains  the State's  ability to
raise  additional  revenue  if  needed,  the State has  placed in excess of $400
million of its surplus  revenues in a rainy-day fund to protect  against such an
eventuality.

     In 1994,  the Arizona  Supreme Court declared the  then-current  system for
funding  construction  and  maintenance  of the  State's  public  schools  to be
unconstitutional  on the ground that it resulted in  substantial


                                       I-1
<PAGE>

disparities  in the nature and  condition of capital  facilities  in the State's
public  schools.  The  Supreme  Court  directed  the State  Legislature  to make
appropriate  changes in the  system to rectify  this  disparity.  After  several
efforts, the State Legislature, in 1998, adopted legislation which establishes a
State Facilities Board to set uniform minimum capital  facilities  standards for
Arizona's public schools,  with funding for any new facilities or renovations to
be provided on a  pay-as-you-go  basis from a new School  Facilities  Fund which
will be funded by annual State appropriations.  Under limited circumstances, the
voters in a local school district could authorize the issuance and sale of bonds
to pay for the  acquisition  or  construction  of new capital  facilities in the
district  which  exceed  the  State's   established   minimum  standards.   This
legislation  should have no effect on the obligation or ability of the districts
to pay debt service on currently outstanding bonds.

     Maricopa  County  is the  State's  most  populous  and  prosperous  county,
accounting for nearly 60% of the State's  population and a substantial  majority
of its wage and salary  employment  and aggregate  personal  income.  Within its
borders lie the City of Phoenix,  the State's largest city and the sixth largest
city in the United States, and the Cities of Scottsdale,  Tempe, Mesa, Glendale,
Chandler and Peoria,  as well as the Towns of Paradise Valley and Gilbert.  Good
transportation  facilities,  a substantial pool of available labor, a variety of
support  industries and a warm climate have helped make Maricopa  County a major
business center in the southwestern  United States.  Once dependent primarily on
agriculture,  Maricopa County has  substantially  diversified its economic base.
Led by the service sector, which includes transportation, communications, public
utilities, hospitality and entertainment, trade, finance, insurance, real estate
and government, the County has achieved an average annual employment growth rate
of  4.5%  or  more  each  year  since  1995.   In   addition,   several   large,
publicly-traded  companies,  such as The Dial Corp.,  Phelps Dodge and MicroAge,
have their  headquarters  in Maricopa  County,  while others,  such as Motorola,
Intel and Honeywell,  conduct major operations  there. A variety of professional
sports  teams are based in Maricopa  County,  including  the  Phoenix  Suns (NBA
basketball),  the Arizona  Cardinals (NFL  football),  the Phoenix  Coyotes (NHL
hockey), and the Arizona Diamondbacks (MLB baseball).  The City of Scottsdale is
seeking  voter  approval in November 1999 to construct a  multipurpose  facility
which would include a new arena for the Phoenix Coyotes and would be financed by
a share of the incremental State sales taxes generated by the facility.

Pima County is the State's second most populous county, and includes the City of
Tucson.  Traditionally,  Pima  County's  economy has been based  primarily  upon
manufacturing,  mining, government, agriculture, tourism, education and finance.
Hughes Aircraft, which transferred its Hughes Missile Systems division to Tucson
from Canoga  Park,  California,  several  years ago,  and several  large  mining
companies,  including BHP Copper, ASARCO and Phelps Dodge, anchor the non-public
sector of the Tucson economy. During the past decade, Pima County, and Tucson in
particular,  has become a base for hundreds of computer software  companies,  as
well  as  a  number  of  companies  operating  in  the  areas  of  environmental
technology,  bioindustry  and  telecommunications.   Pima  County  traditionally
experienced  more modest  annual job growth,  averaging  2.0-2.5%;  this rate is
expected to continue for the foreseeable future.


                                       I-2
<PAGE>

                                   APPENDIX II

                           RATINGS OF MUNICIPAL BONDs

Description of Moody's  Investors  Service,  Inc.'s  ("Moody's")  Long-Term Debt
Ratings

Aaa       Bonds which are rated Aaa are judged to be of the best  quality.  They
          carry  the  smallest  degree  of  investment  risk  and are  generally
          referred to as "gilt  edged."  Interest  payments  are  protected by a
          large or by an  exceptionally  stable  margin and principal is secure.
          While the  various  protective  elements  are likely to  change,  such
          changes  as  can  be  visualized  are  most  unlikely  to  impair  the
          fundamentally strong position of such issues.

Aa        Bonds  which are  rated Aa are  judged  to be of high  quality  by all
          standards.  Together  with  the  Aaa  group  they  comprise  what  are
          generally  known as high grade  bonds.  They are rated  lower than the
          best bonds because margins of protection may not be as large as in Aaa
          securities or  fluctuation  of  protective  elements may be of greater
          amplitude  or  there  may be other  elements  present  which  make the
          long-term risk appear somewhat larger than in Aaa securities.

A         Bonds which are rated A possess many favorable  investment  attributes
          and are to be  considered as upper medium grade  obligations.  Factors
          giving security to principal and interest are considered adequate, but
          elements may be present which suggest a  susceptibility  to impairment
          sometime in the future.

Baa       Bonds which are rated Baa are  considered as medium grade  obligations
          (i.e., they are neither highly protected nor poorly secured). Interest
          payment and  principal  security  appear  adequate for the present but
          certain    protective    elements   may   be   lacking   or   may   be
          characteristically  unreliable  over any great  length  of time.  Such
          bonds lack  outstanding  investment  characteristics  and in fact have
          speculative characteristics as well.

Ba        Bonds  which are rated Ba are  judged  to have  speculative  elements;
          their  future  cannot  be  considered  as  well  assured.   Often  the
          protection of interest and principal payments may be very moderate and
          thereby not well  safeguarded  during both good and bad times over the
          future. Uncertainty of position characterizes bonds in this class.

B         Bonds  which  are  rated  B  generally  lack  characteristics  of  the
          desirable investment.  Assurance of interest and principal payments or
          of  maintenance of other terms of the contract over any long period of
          time may be small.

Caa       Bonds which are rated Caa are of poor standing.  Such issues may be in
          default or there may be present  elements  of danger  with  respect to
          principal or interest.

Ca        Bonds which are rated Ca represent  obligations  which are speculative
          in a high  degree.  Such  issues  are often in  default  or have other
          marked shortcomings.

C         Bonds  which  are rated C are the  lowest  rated  class of bonds,  and
          issues so rated can be regarded as having  extremely poor prospects of
          ever attaining any real investment standing.

     Note: Those bonds in the Aa, A, Baa, Ba and B groups which Moody's believes
possess the strongest  investment  attributes are designated by the symbols Aa1,
A1, Baa1, Ba1 and B1.

     Short Term Notes: The three ratings of Moody's for short-term notes are MIG
1/VMIG 1, MIG  2/VMIG 2 and MIG  3/VMIG 3; MIG  1/VMIG 1 denotes  "best  quality
strong  protection  from  established  cash flows";  MIG 2/VMIG 2 denotes  "high
quality" with "ample  margins of  protection";  MIG 3/VMIG 3 instruments  are of
"favorable quality but lacking the undeniable strength of the preceding grades."

Description of Moody's Commercial Paper Ratings

     Moody's  Commercial Paper ratings are opinions of the ability of issuers to
repay  punctually  promissory  obligations  not having an  original  maturity in
excess of nine months.  Moody's  employs the following three  designations,  all
judged to be investment  grade, to indicate the relative  repayment  capacity of
rated issuers:


                                       II-1
<PAGE>

     Issuers rated Prime-1 (or supporting  institutions) have a superior ability
for repayment of short-term  promissory  obligations.  Prime-1 repayment ability
will often be evidenced by many of the following characteristics: leading market
positions  in well  established  industries;  high  rates  of  return  on  funds
employed;  conservative capitalization structures with moderate reliance on debt
and ample asset protection; broad margins in earning coverage of fixed financial
charges and high  internal cash  generation;  and well  established  access to a
range of financial markets and assured sources of alternate liquidity.

     Issuers rated Prime-2 (or  supporting  institutions)  have a strong ability
for  repayment  of  short-term  promissory  obligations.  This will  normally be
evidenced  by many of the  characteristics  cited above but to a lesser  degree.
Earnings  trends  and  coverage  ratios,  while  sound,  may be more  subject to
variation. Capitalization characteristics,  while still appropriate, may be more
affected by external conditions. Ample alternate liquidity is maintained.

     Issuers  rated  Prime-3 (or  supporting  institutions)  have an  acceptable
ability for  repayment  of  short-term  promissory  obligations.  The effects of
industry   characteristics  and  market  composition  may  be  more  pronounced.
Variability in earnings and  profitability may result in changes to the level of
debt protection measurements and may require relatively high financial leverage.
Adequate alternate liquidity is maintained.

     Issuers  rated  Not  Prime  do not  fall  within  any of the  Prime  rating
categories.

Description of Standard & Poor's, a Division of the Mcgraw-hill Companies,  Inc.
("Standard & Poor's"), Municipal Debt Ratings

     A  Standard  & Poor's  municipal  debt  rating is a current  opinion of the
creditworthiness of an obligor with respect to a specific financial  obligation,
a specific class of financial  obligations or a specific program.  It takes into
consideration the  creditworthiness of guarantors,  insurers,  or other forms of
credit enhancement on the obligation.

     The  debt  rating  is not a  recommendation  to  purchase,  sell  or hold a
financial obligation, in as much  as it does not  comment as to market  price or
suitability for a particular investor.

     The ratings are based on current  information  furnished by the obligors or
obtained  by Standard & Poor's from other  sources  Standard & Poor's  considers
reliable.  Standard & Poor's  does not perform an audit in  connection  with any
rating and may,  on  occasion,  rely on  unaudited  financial  information.  The
ratings may be changed,  suspended,  or  withdrawn as a result of changes in, or
unavailability of, such information, or based on circumstances.

     The ratings are based, in varying degrees, on the following considerations:

    I.   Likelihood of payment -- capacity and  willingness of the obligor as to
         the timely payment of interest and repayment of principal in accordance
         with the terms of the obligation;

   II.   Nature of and provisions of the obligation;

  III.   Protection afforded to, and relative position of, the obligation in the
         event of bankruptcy, reorganization or other arrangement under the laws
         of bankruptcy and other laws affecting creditors' rights.

  AAA    Debt rated "AAA" has the highest rating  assigned by Standard & Poor's.
         Capacity  to  meet  its  financial  commitment  on  the  obligation  is
         extremely strong.

  AA     Debt rated "AA"  differs  from the highest  rated  issues only in small
         degree. The Obligor's capacity to meet its financial  commitment on the
         obligation is very strong.

  A      Debt rated "A" is somewhat more  susceptible to the adverse  effects of
         changes  in  circumstances   and  economic   conditions  than  debt  in
         higher-rated  categories.  However,  the obligor's capacity to meet its
         financial commitment on the obligation is still strong.

  BBB    Debt rated "BBB"  exhibits  adequate  protection  parameters.  However,
         adverse economic  conditions or changing  circumstances are more likely
         to lead to a weakened  capacity  of the  obligor to meet its  financial
         commitment on the obligation.


                                      II-2
<PAGE>

BB       Debt  rated  "BB,"  "B,"  "CCC,"  "CC" and "C" are  regarded  as having
B        significant  speculative  characteristics.  "BB"  indicates  the  least
CCC      degree of speculation  and "C" the highest degree of speculation. While
CC       such debt will likely have some quality and protective characteristics,
C        these may be outweighed by large uncertainties or  major risk exposures
         to adverse conditions.

D        Debt rated "D" is in payment  default.  The "D" rating category is used
         when payments on an obligation are not made on the date due even if the
         applicable  grace  period  has not  expired,  unless  Standard & Poor's
         believes that such payments will be made during such grace period.  The
         "D" rating also will be used upon the filing of a  bankruptcy  petition
         or the  taking of  similar  action if  payments  on an  obligation  are
         jeopardized.

     Plus (+) or Minus (-):  The  ratings  from "AA" to "CCC" may be modified by
the addition of a plus or minus sign to show relative  standing within the major
rating categories.

Description of Standard & Poor's Commercial Paper Ratings

     A Standard & Poor's commercial paper rating is a current  assessment of the
likelihood of timely payment of debt having an original maturity of no more than
365 days. Ratings are graded into several categories, ranging from "A-1" for the
highest-quality  obligations  to "D" for the  lowest.  These  categories  are as
follows:

A-1   This  designation  indicates  that the degree of safety  regarding  timely
      payment is strong.  Those issues  determined to possess  extremely  strong
      safety characteristics are denoted with a plus sign (+) designation.

A-2   Capacity  for  timely   payment  on  issues  with  this   designation   is
      satisfactory. However, the relative degree of safety is not as high as for
      issues designated "A-1."

A-3   Issues  carrying  this  designation  have an adequate  capacity for timely
      payment.  They are,  however,  more  vulnerable to the adverse  effects of
      changes   in   circumstances   than   obligations   carrying   the  higher
      designations.

B     Issues  rated "B" are  regarded as having only  speculative  capacity  for
      timely payment.

C     This rating is assigned to  short-term  debt  obligations  with a doubtful
      capacity for payment.

D     Debt rated "D" is in payment default. The "D" rating category is used when
      interest payments or principal payments are not made on the date due, even
      if the applicable  grace period has not expired  unless  Standard & Poor's
      believes that such payments will be made during such grace period.

     A  commercial  paper rating is not a  recommendation  to purchase or sell a
security.  The ratings are based on current information  furnished to Standard &
Poor's by the issuer or  obtained  by  Standard & Poor's  from other  sources it
considers  reliable.  The ratings may be changed,  suspended,  or withdrawn as a
result of changes in, or unavailability of, such information.

     A Standard & Poor's note rating  reflects the liquidity  factors and market
access  risks  unique to notes.  Notes  due in three  years or less will  likely
receive a note  rating.  Notes  maturing  beyond  three  years will most  likely
receive a long-term debt rating.  The following  criteria will be used in making
that assessment.

     -- Amortization  schedule--the  larger the final maturity relative to other
        maturities, the more likely it will be treated as a note.

     -- Source of payment--the more dependent the issue is on the market for its
        refinancing, the more likely it will be treated as a note.

     Note rating symbols are as follows:

SP-1   Strong  capacity to pay principal and  interest.  An issue  determined to
       possess a very strong  capacity  to pay debt  service is given a plus (+)
       designation.

SP-2   Satisfactory   capacity  to  pay   principal   and  interest   with  some
       vulnerability to adverse  financial and economic changes over the term of
       the notes.

SP-3   Speculative capacity to pay principal and interest.


                                      II-3
<PAGE>

c      The "c" subscript is used to provide additional  information to investors
       that the bank may terminate its obligation to purchase  tendered bonds if
       the long-term  credit  rating of the issuer is below an  investment-grade
       level and/or the issuer's bonds are deemed taxable.

p      The letter "p" indicates  that the rating is  provisional.  A provisional
       rating assumes the successful  completion of the project  financed by the
       debt being rated and indicates that payment of debt service  requirements
       is largely or entirely  dependent upon the successful,  timely completion
       of the project.  This rating,  however,  while addressing  credit quality
       subsequent  to  completion  of  the  project,  makes  no  comment  on the
       likelihood of or the risk of default upon failure of such completion. The
       investor should exercise his own judgment with respect to such likelihood
       and risk.

*      Continuance  of the ratings is contingent  upon Standard & Poor's receipt
       of an  executed  copy of the escrow  agreement  or closing  documentation
       confirming investments and cash flows.

r      The "r" highlights derivative, hybrid, and certain other obligations that
       Standard  &  Poor's  believes  may  experience  high  volatility  or high
       variability in expected returns as a result of noncredit risks.  Examples
       of such  obligations  are securities  with  principal or interest  return
       indexed  to  equities,  commodities,  or  currencies;  certain  swaps and
       options, and interest-only and principal-only  mortgage  securities.  The
       absence of an "r" symbol  should  not be taken as an  indication  that an
       obligation will exhibit no volatility or variability in total return.

Description of Fitch IBCA, Inc.'s ("Fitch") Investment Grade Bond Ratings

     Fitch  investment  grade  bond  ratings  provide  a guide to  investors  in
determining the credit risk associated  with a particular  security.  The rating
represents Fitch's assessment of the issuer's ability to meet the obligations of
a specific debt issue or class of debt in a timely manner.

     The rating  takes into  consideration  special  features of the issue,  its
relationship  to other  obligations of the issuer,  the current and  prospective
financial  condition and operating  performance of the issuer and any guarantor,
as well as the economic and political environment that might affect the issuer's
future financial strength and credit quality.

     Fitch ratings do not reflect any credit enhancement that may be provided by
insurance policies or financial guarantees unless otherwise indicated.

     Bonds carrying the same rating are of similar but not necessarily identical
credit  quality  since  the  rating   categories  do  not  fully  reflect  small
differences in the degrees of credit risk.

     Fitch ratings are not  recommendations  to buy, sell, or hold any security.
Ratings do not comment on the adequacy of market price,  the  suitability of any
security for a particular  investor,  or the tax-exempt  nature or taxability of
payments made in respect of any security.

     Fitch  ratings  are  based on  information  obtained  from  issuers,  other
obligors,  underwriters,  their experts,  and other sources Fitch believes to be
reliable.  Fitch  does not  audit  or  verify  the  truth  or  accuracy  of such
information.  Ratings may be changed,  suspended,  or  withdrawn  as a result of
changes in, or the unavailability of, information or for other reasons.

AAA   Bonds considered to be investment grade and of the highest credit quality.
      The obligor has an exceptionally  strong ability to pay interest and repay
      principal,  which is unlikely to be  affected  by  reasonably  foreseeable
      events.

AA    Bonds  considered to be investment  grade and of very high credit quality.
      The obligor's  ability to pay interest and repay principal is very strong,
      although not quite as strong as bonds rated "AAA."  Because bonds rated in
      the  "AAA"  and  "AA"  categories  are  not  significantly  vulnerable  to
      foreseeable  future  developments,  short-term  debt of these  issuers  is
      generally rated "F-1+."

A     Bonds  considered to be investment  grade and of high credit quality.  The
      obligor's  ability to pay interest and repay principal is considered to be
      strong,  but  may be  more  vulnerable  to  adverse  changes  in  economic
      conditions and circumstances than bonds with higher ratings.

                                      II-4
<PAGE>


BBB   Bonds  considered  to  be  investment  grade  and  of  satisfactory-credit
      quality.  The  obligor's  ability to pay interest  and repay  principal is
      considered  to be adequate.  Adverse  changes in economic  conditions  and
      circumstances,  however,  are more likely to have adverse  impact on these
      bonds,  and  therefore  impair timely  payment.  The  likelihood  that the
      ratings of these bonds will fall below investment grade is higher than for
      bonds with higher ratings.

     Plus (+) or Minus (-):  Plus and minus signs are used with a rating  symbol
to indicate the relative  position of a credit within the rating category.  Plus
and minus signs, however, are not used in the "AAA" category.

NR          Indicates that Fitch does not rate the specific issue.

Conditional A conditional  rating is premised on the successful  completion of a
            project or the occurrence of a specific event.

Suspended   A rating is  suspended  when Fitch  deems the amount of  information
            available from the issuer to be inadequate for rating purposes.

Withdrawn   A rating  will be  withdrawn  when an issue  matures or is called or
            refinanced  and,  at  Fitch's  discretion,  when an issuer  fails to
            furnish proper and timely information.

FitchAlert  Ratings  are  placed  on  FitchAlert  to  notify   investors  of  an
            occurrence  that is  likely to  result  in a rating  change  and the
            likely direction of such change. These are designated as "Positive,"
            indicating a potential upgrade, "Negative," for potential downgrade,
            or "Evolving," where ratings may be raised or lowered. FitchAlert is
            relatively short-term, and should be resolved within 12 months.

     Ratings  Outlook:  An outlook is used to describe the most likely direction
of any rating change over the  intermediate  term. It is described as "Positive"
or "Negative." The absence of a designation indicates a stable outlook.

Description of Fitch's Speculative Grade Bond Ratings

     Fitch  speculative  grade  bond  ratings  provide a guide to  investors  in
determining the credit risk associated with a particular  security.  The ratings
("BB" to "C") represent  Fitch's  assessment of the likelihood of timely payment
of principal  and interest in accordance  with the terms of obligation  for bond
issues not in default.  For  defaulted  bonds,  the rating  ("DDD" to "D") is an
assessment of the ultimate recovery value through reorganization or liquidation.

     The rating  takes into  consideration  special  features of the issue,  its
relationship  to other  obligations of the issuer,  the current and  prospective
financial  condition and operating  performance of the issuer and any guarantor,
as well as the economic and political environment that might affect the issuer's
future financial strength.

     Bonds  that  have  the  same  rating  are of  similar  but not  necessarily
identical  credit  quality  since rating  categories  cannot  fully  reflect the
differences in degrees of credit risk.

BB     Bonds are considered  speculative.  The obligor's ability to pay interest
       and  repay  principal  may be  affected  over  time by  adverse  economic
       changes.  However,  business and financial alternatives can be identified
       which  could   assist  the  obligor  in   satisfying   its  debt  service
       requirements.

B      Bonds are considered  highly  speculative.  While bonds in this class are
       currently meeting debt service requirements, the probability of continued
       timely payment of principal and interest  reflects the obligor's  limited
       margin  of  safety  and the need for  reasonable  business  and  economic
       activity throughout the life of the issue.

CCC    Bonds have certain identifiable  characteristics  which, if not remedied,
       may  lead to  default.  The  ability  to  meet  obligations  requires  an
       advantageous business and economic environment.

CC     Bonds are  minimally  protected.  Default in payment of  interest  and/or
       principal seems probable over time.

C      Bonds are in imminent default in payment of interest or principal.


                                      II-5
<PAGE>

DDD    Bonds are in default on interest and/or principal payments. Such bonds
       are extremely  speculative  and should be valued on the basis of their
DD     ultimate  recovery  value  in  liquidation  or  reorganization  of the
       obligor.  "DDD" represents the highest potential for recovery on these
D      bonds, and "D" represents the lowest potential for recovery.

     Plus (+) or Minus (-):  Plus and minus signs are used with a rating  symbol
to indicate the relative  position of a credit within the rating category.  Plus
and minus signs, however, are not used in the "DDD," "DD," or "D" categories.

Description of Fitch's Short-Term Ratings

     Fitch's  short-term  ratings apply to debt  obligations that are payable on
demand or have original  maturities of up to three years,  including  commercial
paper, certificates of deposit,  medium-term notes, and municipal and investment
notes.

     The short-term  ratings place greater  emphasis than a long-term  rating on
the  existence of liquidity  necessary  to meet the  issuer's  obligations  in a
timely manner.

     Fitch short-term ratings are as follows:

F-1+  Exceptionally  Strong  Credit  Quality.  Issues  assigned  this rating are
      regarded as having the strongest degree of assurance for timely payment.

F-1   Very  Strong  Credit  Quality.  Issues  assigned  this  rating  reflect an
      assurance of timely payment only slightly less in degree than issues rated
      "F-1+."

F-2   Good Credit  Quality.  Issues  assigned  this  rating have a  satisfactory
      degree of assurance for timely payment, but the margin of safety is not as
      great as for issues assigned "F-1+" and "F-1" ratings.

F-3   Fair Credit  Quality.  Issues  assigned  this rating have  characteristics
      suggesting  that the degree of assurance  for timely  payment is adequate;
      however,  near-term  adverse  changes  could cause these  securities to be
      rated below investment grade.

F-S   Weak Credit  Quality.  Issues  assigned  this rating have  characteristics
      suggesting  a minimal  degree of  assurance  for  timely  payment  and are
      vulnerable  to  near-term   adverse  changes  in  financial  and  economic
      conditions.

D     Default.  Issues  assigned  this rating are in actual or imminent  payment
      default.

LOC   The symbol "LOC"  indicates that the rating is based on a letter of credit
      issued by a commercial bank.


                                      II-6
<PAGE>



     Code # 13975-11-99

<PAGE>


                            PART C. OTHER INFORMATION

ITEM 23. EXHIBITS

   EXHIBIT
   NUMBER       DESCRIPTION
   -------      -----------

     1(a) -- Declaration  of  Trust  of the  Registrant,  dated  August  2,
             1985.(a)

      (b) -- Amendment to Declaration of Trust, dated September 18, 1987.(a)

      (c) -- Amendment to Declaration of Trust,  dated December 21, 1987.(a)

      (d) -- Amendment to  Declaration  of Trust,  dated October 3, 1988.(a)

      (e) -- Amendment to Declaration of Trust, dated October 17, 1994
             and  instrument  establishing  Class C and Class D shares of
             beneficial interest.(a)

      (f) -- Instrument  establishing  Merrill Lynch Arizona Municipal
             Bond Fund (the "Fund") as a series of the Registrant.(a)

      (g) -- Instrument  establishing  Class A and Class B shares of  beneficial
             interest of the Fund.(a)

     2    -- By-Laws of the Registrant.(a)

     3    -- Portions of the Declaration of Trust,  Certificate of Establishment
             and Designation  and By-Laws of the Registrant  defining the rights
             of holders of the Fund as a series of the Registrant.(b)

     4(a) -- Form of Management  Agreement between the Registrant and Fund Asset
             Management, L.P.(a)

      (b) -- Supplement  to Management  Agreement  between  Registrant  and Fund
             Asset Management, L.P.(e)

     5(a) -- Form  of  Revised  Class  A  Distribution   Agreement  between  the
             Registrant and Merrill Lynch Funds Distributor,  Inc. (now known as
             Princeton Funds Distributor,  Inc.) (the "Distributor")  (including
             Form of Selected Dealers Agreement).(e)

      (b) -- Form of Class B Distribution  Agreement  between the Registrant and
             the Distributor (including Form of Selected Dealers Agreement).(a)

      (c) -- Form of Class C Distribution  Agreement  between the Registrant and
             the Distributor (including Form of Selected Dealers Agreement).(e)

      (d) -- Form of Class D Distribution  Agreement  between the Registrant and
             the Distributor (including Form of Selected Dealers Agreement).(e)

      (e) -- Letter  Agreement  between  the  Fund  and the  Distributor,  dated
             September  15, 1993,  in  connection  with the Merrill Lynch Mutual
             Fund Advisor Program.(c)

     6    -- None.

     7    -- Form of Custody  Agreement  between the Registrant and State Street
             Bank and Trust Company.(d)

     8    -- Form of Transfer Agency, Dividend Disbursing Agency and Shareholder
             Servicing Agency Agreement between the Registrant and Merrill Lynch
             Financial  Data  Services,   Inc.  (now  known  as  Financial  Data
             Services, Inc.)(a)


     9    -- Opinion of Brown & Wood LLP, counsel for the Registrant.(g)

    10    -- Consent of  Deloitte & Touche  LLP,  independent  auditors  for the
             Registrant.

    11    -- None.

    12    -- Certificate of Fund Asset Management, L.P.(a)

    13(a) -- Amended and Restated  Class B  Distribution  Plan of the Registrant
             and   Amended   and   Restated    Class   B    Distribution    Plan
             Sub-Agreement.(c)

      (b) -- Form of Class C  Distribution  Plan of the  Registrant  and Class C
             Distribution  Plan   Sub-Agreement.(e)

      (c) -- Form of Class D  Distribution  Plan of the  Registrant  and Class D
             Distribution Plan Sub-Agreement.(e)

    14    -- Merrill  Lynch  Select  Pricing(SM) System Plan  pursuant  to  Rule
             18f-3.(f)


- -------------
(a)  Filed on October 20, 1995 as an Exhibit to  Post-Effective  Amendment No. 5
     to the Registrant's Registration Statement on Form N-1A (File No. 33-41311)
     under the  Securities  Act of 1933,  as amended,  relating to shares of the
     Fund (the "Registration Statement").


                                      C-1
<PAGE>


(b)  Reference is made to Article II,  Section 2.3 and Articles V, VI, VIII, IX,
     X and XI of the  Registrant's  Declaration of Trust,  as amended,  filed as
     Exhibits 1(a), 1(b), 1(c), 1(d) and 1(e) with Post-Effective  Amendment No.
     5 to the Registration  Statement;  to the Certificates of Establishment and
     Designation  establishing  the  Fund  as a  series  of the  Registrant  and
     establishing Class A and Class B shares of beneficial interest of the Fund,
     filed  as  Exhibits  1(f)  and  1(g),  respectively,   with  Post-Effective
     Amendment No. 5 to the Registration Statement;  and to Articles I, V and VI
     of the  Registrant's  By-Laws,  filed  as  Exhibit  2  with  Post-Effective
     Amendment No. 5 to the Registration Statement.

(c)  Filed on November 24, 1993 as an Exhibit to Post-Effective  Amendment No. 3
     to the Registration Statement.

(d)  Incorporated by reference to Exhibit 8 to Post-Effective Amendment No. 3 to
     Registrant's  Registration  Statement on Form N-1A under the Securities Act
     of 1933,  filed on October 14,  1994,  relating to shares of Merrill  Lynch
     Minnesota Municipal Bond Fund series of the Registrant (File No. 33-44734).

(e)  Filed on October 18, 1994 as an Exhibit to  Post-Effective  Amendment No. 4
     to the Registration Statement.

(f)  Incorporated by reference to Exhibit 18 to Post-Effective  Amendment No. 13
     to  Registrant's  Registration  Statement on Form N-1A under the Securities
     Act of 1933, filed on January 25, 1996, relating to shares of Merrill Lynch
     New York Municipal Bond Fund series of the Registrant (File No. 2-99473).

(g)  Filed on October 17, 1991 as an Exhibit to Pre-Effective Amendment No. 1 to
     the Registration Statement.  Refiled with this Post-Effective Amendment No.
     10 pursuant to Electronic  Data Gathering,  Analysis and Retrieval  (EDGAR)
     requirements.

Item 24. Persons Controlled by or Under Common Control With Registrant

     The  Registrant is not controlled by or under common control with any other
person.

Item 25.  Indemnification

     Section 5.3 of the Registrant's Declaration of Trust provides as follows:

     "The Trust shall  indemnify each of its Trustees,  officers,  employees and
agents  (including  persons who serve at its request as  directors,  officers or
trustees of another  organization in which it has any interest as a shareholder,
creditor or otherwise)  against all liabilities and expenses  (including amounts
paid in satisfaction of judgments, in compromise,  as fines and penalties and as
counsel  fees)  reasonably  incurred  by him in  connection  with the defense or
disposition of any action, suit or other proceeding,  whether civil or criminal,
in which he may be involved or with which he may be threatened,  while in office
or  thereafter,  by reason of his being or having been such a trustee,  officer,
employee or agent,  except with  respect to any matter as to which he shall have
been  adjudicated  to  have  acted  in bad  faith,  willful  misfeasance,  gross
negligence or reckless disregard of his duties;  provided,  however,  that as to
any matter  disposed of by a compromise  payment by such  person,  pursuant to a
consent decree or otherwise,  no indemnification  either for said payment or for
any other  expenses  shall be provided  unless the Trust  shall have  received a
written opinion from  independent  legal counsel approved by the Trustees to the
effect that if either the matter of willful  misfeasance,  gross  negligence  or
reckless disregard of duty, or the matter of good faith and reasonable belief as
to the best  interests of the Trust,  had been  adjudicated,  it would have been
adjudicated  in favor of such  person.  The rights  accruing to any Person under
these  provisions  shall not  exclude  any other right to which he or she may be
lawfully entitled; provided that no Person may satisfy any right of indemnity or
reimbursement  granted  herein  or in  Section  5.1 or to which he or she may be
otherwise  entitled except out of the property of the Trust,  and no Shareholder
shall be personally liable to any Person with respect to any claim for indemnity
or  reimbursement  or  otherwise.  The  Trustees  may make  advance  payments in
connection  with  indemnification  under this  Section  5.3,  provided  that the
indemnified person shall have given a written undertaking to reimburse the Trust
in the  event it is  subsequently  determined  that he is not  entitled  to such
indemnification."

     Insofar as the conditional advancing of indemnification  moneys for actions
based upon the  Investment  Company Act of 1940 may be concerned,  such payments
will be made only on the following conditions:  (i) the advances must be limited
to amounts used, or to be used, for the preparation or presentation of a defense
to the action,  including  costs connected with the preparation of a settlement;
(ii)  advances  may be made only upon  receipt  of a written  promise  by, or on
behalf of, the  recipient to repay that amount of the advance  which exceeds the
amount which it is ultimately  determined  that he or she is entitled to receive
from the Registrant by reason of


                                      C-2
<PAGE>

indemnification;  and  (iii)(a)  such  promise must be secured by a surety bond,
other  suitable  insurance or an equivalent  form of security which assures that
any repayments  may be obtained by the  Registrant  without delay or litigation,
which  bond,  insurance  or  other  form of  security  must be  provided  by the
recipient  of the  advance,  or (b) a majority  of a quorum of the  Registrant's
disinterested,  non-party Trustees, or an independent legal counsel in a written
opinion,  shall determine,  based upon a review of readily  available facts that
the   recipient   of  the  advance   ultimately   will  be  found   entitled  to
indemnification.

     In  Section  9 of the  Class  A,  Class  B,  Class  C and  Class  D  Shares
Distribution  Agreements  relating to the securities  being offered hereby,  the
Registrant  agrees to indemnify  the  Distributor  and each person,  if any, who
controls the  Distributor  within the meaning of the  Securities Act of 1933, as
amended  ("1933 Act"),  against  certain types of civil  liabilities  arising in
connection  with the  Registration  Statement  or  Prospectus  and  Statement of
Additional Information.

     Insofar as indemnification  for liabilities  arising under the 1933 Act may
be permitted to Trustees, officers and controlling persons of the Registrant and
the principal underwriter pursuant to the foregoing provisions or otherwise, the
Registrant  has been advised that in the opinion of the  Securities and Exchange
Commission  such  indemnification  is against  public policy as expressed in the
1933  Act  and is,  therefore,  unenforceable.  In the  event  that a claim  for
indemnification  against  such  liabilities  (other  than  the  payment  by  the
Registrant of expenses  incurred or paid by a Trustee,  officer,  or controlling
person of the  Registrant and the principal  underwriter in connection  with the
successful  defense of any  action,  suit or  proceeding)  is  asserted  by such
Trustee,   officer  or  controlling  person  or  the  principal  underwriter  in
connection with the shares being registered,  the Registrant will, unless in the
opinion of its counsel  the matter has been  settled by  controlling  precedent,
submit  to a  court  of  appropriate  jurisdiction  the  question  whether  such
indemnification  by it is against public policy as expressed in the 1933 Act and
will be governed by the final adjudication of such issue.


Item 26. Business and Other Connections of Investment Adviser

     Fund Asset Management, L.P. (the "Manager" or "FAM") acts as the investment
adviser for the following open-end registered  investment  companies:  CBA Money
Fund, CMA Government  Securities Fund, CMA Money Fund, CMA Multi-State Municipal
Series Trust,  CMA  Tax-Exempt  Fund,  CMA Treasury  Fund,  The  Corporate  Fund
Accumulation Program,  Inc., Financial  Institutions Series Trust, Merrill Lynch
Basic Value Fund, Inc., Merrill Lynch California Municipal Series Trust, Merrill
Lynch Corporate Bond Fund, Inc.,  Merrill Lynch Corporate High Yield Fund, Inc.,
Merrill Lynch  Emerging  Tigers Fund,  Inc.,  Merrill  Lynch Federal  Securities
Trust,  Merrill Lynch Funds for Institutions  Series,  Merrill Lynch Multi-State
Limited Maturity  Municipal Series Trust,  Merrill Lynch  Multi-State  Municipal
Series Trust,  Merrill Lynch  Municipal Bond Fund,  Inc.,  Merrill Lynch Phoenix
Fund, Inc.,  Merrill Lynch Special Value Fund, Inc.,  Merrill Lynch World Income
Fund,  Inc.,  and The Municipal  Fund  Accumulation  Program,  Inc.; and for the
following closed-end registered investment companies: Apex Municipal Fund, Inc.,
Corporate High Yield Fund, Inc.,  Corporate High Yield Fund II, Inc.,  Corporate
High Yield Fund III, Inc., Debt Strategies  Fund, Inc., Debt Strategies Fund II,
Inc., Debt  Strategies Fund III, Inc.,  Income  Opportunities  Fund 1999,  Inc.,
Income  Opportunities  Fund 2000, Inc.,  Merrill Lynch Municipal  Strategy Fund,
Inc., MuniAssets Fund, Inc.,  MuniEnhanced Fund, Inc.,  MuniHoldings Fund, Inc.,
MuniHoldings  Fund  II,  Inc.,   MuniHoldings  California  Insured  Fund,  Inc.,
MuniHoldings  California Insured Fund II, Inc.,  MuniHoldings California Insured
Fund III,  Inc.,  MuniHoldings  California  Insured Fund IV, Inc.,  MuniHoldings
California Insured Fund V, Inc., MuniHoldings Florida Insured Fund, MuniHoldings
Florida Insured Fund II,  MuniHoldings  Florida  Insured Fund III,  MuniHoldings
Florida  Insured Fund IV,  MuniHoldings  Florida  Insured  Fund V,  MuniHoldings
Insured Fund, Inc.,  MuniHoldings  Insured Fund II, Inc.,  MuniHoldings  Insured
Fund III,  Inc.,  MuniHoldings  Insured  Fund IV,  Inc.,  MuniHoldings  Michigan
Insured Fund, Inc.,  MuniHoldings  Michigan Insured Fund II, Inc.,  MuniHoldings
New Jersey Insured Fund,  Inc.,  MuniHoldings  New Jersey Insured Fund II, Inc.,
MuniHoldings New Jersey Insured Fund III, Inc.,  MuniHoldings New Jersey Insured
Fund IV, Inc.,  MuniHoldings New York Fund, Inc.,  MuniHoldings New York Insured
Fund, Inc.,  MuniHoldings New York Insured Fund II, Inc.,  MuniHoldings New York
Insured  Fund  III,  Inc.,   MuniHoldings   New  York  Insured  Fund  IV,  Inc.,
MuniHoldings  Pennsylvania Insured Fund,  MuniInsured Fund, Inc., MuniVest Fund,
Inc.,  MuniVest Fund II, Inc.,  MuniVest Florida Fund, MuniVest Michigan Insured
Fund, Inc., MuniVest New Jersey Fund, Inc., MuniVest  Pennsylvania Insured Fund,
MuniYield  Arizona  Fund,  Inc.,  MuniYield  California  Fund,  Inc.,  MuniYield
California  Insured  Fund,  Inc.,  MuniYield  California  Insured Fund II, Inc.,
MuniYield Florida Fund,  MuniYield


                                      C-3
<PAGE>

Florida  Insured Fund,  MuniYield  Fund,  Inc.,  MuniYield  Insured Fund,  Inc.,
MuniYield Michigan Fund, Inc.,  MuniYield Michigan Insured Fund, Inc., MuniYield
New Jersey Fund, Inc.,  MuniYield New Jersey Insured Fund,  Inc.,  MuniYield New
York Insured Fund,  Inc.,  MuniYield  New York Insured Fund II, Inc.,  MuniYield
Pennsylvania  Fund,  MuniYield  Quality Fund, Inc.,  MuniYield  Quality Fund II,
Inc., Senior High Income Portfolio, Inc. and Worldwide DollarVest Fund, Inc.


     Merrill Lynch Asset Management, L.P. ("MLAM"), an affiliate of the Manager,
acts as the investment adviser for the following open-end registered  investment
companies:  Merrill Lynch Adjustable Rate Securities  Fund, Inc.,  Merrill Lynch
Americas Income Fund, Inc.,  Merrill Lynch Asset Builder Program,  Inc., Merrill
Lynch Asset Growth Fund, Inc.,  Merrill Lynch Asset Income Fund,  Inc.,  Merrill
Lynch Capital Fund, Inc.,  Merrill Lynch Convertible  Fund, Inc.,  Merrill Lynch
Developing  Capital Markets Fund, Inc.,  Merrill Lynch Disciplined  Equity Fund,
Inc.,  Merrill Lynch Dragon Fund,  Inc.,  Merrill Lynch EuroFund,  Merrill Lynch
Fundamental  Growth Fund,  Inc.,  Merrill Lynch Global  Allocation  Fund,  Inc.,
Merrill  Lynch Global Bond Fund for  Investment  and  Retirement,  Merrill Lynch
Global Growth Fund,  Inc.,  Merrill Lynch Global Holdings,  Inc.,  Merrill Lynch
Global Resources Trust,  Merrill Lynch Global SmallCap Fund, Inc., Merrill Lynch
Global Technology Fund, Inc.,  Merrill Lynch Global Utility Fund, Inc.,  Merrill
Lynch  Global  Value Fund,  Inc.,  Merrill  Lynch  Growth  Fund,  Merrill  Lynch
Healthcare  Fund,  Inc.,   Merrill  Lynch  Index  Funds,   Inc.,  Merrill  Lynch
Intermediate  Government  Bond Fund,  Merrill Lynch  International  Equity Fund,
Merrill Lynch Latin America Fund, Inc.,  Merrill Lynch Middle  East/Africa Fund,
Inc.,  Merrill Lynch Municipal  Series Trust,  Merrill Lynch Pacific Fund, Inc.,
Merrill Lynch Ready Assets Trust,  Merrill Lynch Real Estate Fund, Inc., Merrill
Lynch Retirement  Series Trust,  Merrill Lynch Series Fund, Inc.,  Merrill Lynch
Short-Term  Global Income Fund,  Inc.,  Merrill Lynch  Strategic  Dividend Fund,
Merrill  Lynch  U.S.  Treasury  Money  Fund,  Merrill  Lynch  U.S.A.  Government
Reserves, Merrill Lynch Utility Income Fund, Inc., Merrill Lynch Variable Series
Funds,  Inc.  and Hotchkis  and Wiley Funds  (advised by Hotchkis  and Wiley,  a
division  of  MLAM);  and for the  following  closed-end  registered  investment
companies:  Merrill Lynch High Income Municipal Bond Fund,  Inc.,  Merrill Lynch
Senior  Floating Rate Fund, Inc. and Merrill Lynch Senior Floating Rate Fund II,
Inc. MLAM also acts as sub-adviser to Merrill Lynch World Strategy Portfolio and
Merrill  Lynch Basic Value Equity  Portfolio,  two  investment  portfolios of EQ
Advisors Trust.


     The address of each of these  registered  investment  companies is P.O. Box
9011, Princeton, New Jersey 08543-9011, except that the address of Merrill Lynch
Funds for  Institutions  Series and Merrill Lynch  Intermediate  Government Bond
Fund is One Financial Center, 23rd Floor, Boston,  Massachusetts 02111-2665. The
address of the Manager,  MLAM, Princeton Services,  Inc. ("Princeton  Services")
and Princeton Administrators, L.P. ("Princeton Administrators") is also P.O. Box
9011,  Princeton,  New  Jersey  08543-9011.   The  address  of  Princeton  Funds
Distributor,  Inc.,  ("PFD") and of Merrill Lynch Funds Distributor  ("MLFD") is
P.O. Box 9081, Princeton,  New Jersey 08543-9081.  The address of Merrill Lynch,
Pierce,  Fenner & Smith Incorporated  ("Merrill Lynch") and Merrill Lynch & Co.,
Inc. ("ML & Co.") is World Financial Center,  North Tower, 250 Vesey Street, New
York, New York 10281-1201.  The address of the Fund's transfer agent,  Financial
Data Services, Inc. ("FDS"), is 4800 Deer Lake Drive East, Jacksonville, Florida
32246-6484.

     Set forth  below is a list of each  executive  officer  and  partner of the
Manager  indicating  each  business,  profession,  vocation or  employment  of a
substantial  nature in which each such person or entity has been  engaged  since
August 1, 1997 for his,  her or its own account or in the  capacity of director,
officer,  partner or trustee. In addition,  Mr. Glenn is President and Mr. Burke
is Vice  President and Treasurer of all or  substantially  all of the investment
companies  described  in the first two  paragraphs  of this Item 26, and Messrs.
Doll, Giordano and Monagle are officers of one or more of such companies.


<TABLE>
<CAPTION>

                              Position(s) with the                     Other Substantial Business,
Name                                Manager                         Profession, Vocation or Employment
- -----                           -----------------                    --------------------------------
<S>                           <C>                       <C>
 ML & Co. ...................   Limited Partner         Financial Services Holding Company; Limited Partner of MLAM

 Princeton Services .........   General Partner         General Partner of MLAM

 Jeffrey M. Peek ............   President               President of MLAM; President and Director of Princeton Services;
                                                        Executive Vice President of ML & Co.; Managing Director and
                                                        Co-Head of the Investment Banking Division of Merrill Lynch in 1997
</TABLE>


                                      C-4
<PAGE>


<TABLE>
<CAPTION>

                              Position(s) with the                     Other Substantial Business,
Name                                 Manager                        Profession, Vocation or Employment
- -----                           -----------------                    --------------------------------
<S>                           <C>                       <C>
 Terry K. Glenn                 Executive Vice          Executive Vice President of MLAM; Executive Vice
                                President               President and Director of Princeton Services; President and
                                                        Director of PFD; Director of FDS; President of Princeton Administrators

 Gregory A. Bundy               Chief Operating         Chief Operating Officer and Managing Director of MLAM;
                                Officer and             Chief Operating Officer and Managing Director of
                                Managing Director       Princeton Services; Co-CEO of Merrill Lynch Australia
                                                        from 1997 to 1999

 Donald C. Burke                Senior Vice President   Senior Vice President, Treasurer and Director of Taxation
                                and Treasurer           of MLAM; Senior Vice President and Treasurer of
                                                        Princeton  Services; Vice President of PFD; First Vice
                                                        President of MLAM from 1997 to 1999; Vice President of
                                                        MLAM from 1990 to 1997

 Michael G. Clark               Senior  Vice President  Senior Vice President of MLAM; Senior Vice President of
                                                        Princeton  Services; Treasurer and Director of PFD;
                                                        First Vice President of MLAM from 1997 to 1999; Vice President
                                                        of MLAM from 1996 to 1997

Robert C. Doll                  Senior Vice President   Senior Vice  President of MLAM; Senior Vice President of Princeton
                                                        Services;  Chief  Investment Officer of Oppenheimer Funds, Inc. in 1999
                                                        and Executive Vice President thereof from 1991 to 1999

Linda L. Federici               Senior Vice President   Senior Vice President of MLAM; Senior Vice President of
                                                        Princeton Services

Vincent R. Giordano             Senior Vice  President  Senior Vice President of MLAM; Senior Vice President of
                                                        Princeton Services

Michael J. Hennewinkel          Senior Vice President,  Senior Vice President, Secretary and General Counsel of
                                Secretary and General   MLAM;  Senior Vice President of Princeton Services
                                Counsel


Philip L. Kirstein              Senior Vice President   Senior Vice President of MLAM; Senior Vice President, Secretary,
                                                        General Counsel and Director of Princeton Services


Debra W. Landsman-Yaros         Senior Vice President   Senior Vice President of MLAM; Senior Vice President of Princeton
                                                        Services; Vice President of PFDS

Stephen M. M. Miller            Senior Vice President   Executive Vice President of Princeton Administrators;
                                                        Senior Vice President of Princeton Services

Joseph T. Monagle, Jr.          Senior Vice President   Senior Vice President of MLAM; Senior Vice President of
                                                        Princeton Services

Brian A. Murdock                Senior Vice President   Senior Vice President of MLAM; Senior Vice President of
                                                        Princeton Services

Gregory D. Upah                 Senior Vice President   Senior Vice President of MLAM; Senior Vice
                                                        President of Princeton Services
</TABLE>

ITEM 27.  Principal Underwriters

     (a) MLFD,  a division of PFD,  acts as the  principal  underwriter  for the
Registrant and for each of the open-end registered investment companies referred
to in the first two  paragraphs of Item 26 except CBA Money Fund, CMA Government
Securities  Fund, CMA Money Fund, CMA Multi-State  Municipal  Series Trust,  CMA
Tax-Exempt  Fund, CMA Treasury Fund,  The Corporate Fund  Accumulation  Program,
Inc.  The  Municipal  Fund  Accumulation  Program,  Inc.  MLFD  also acts as the
principal   underwriter  for  the  following  closed-end  registered  investment
companies:  Merrill Lynch High Income Municipal Bond Fund,  Inc.,  Merrill Lynch
Municipal Strategy Fund, Inc., Merrill Lynch Senior Floating Rate Fund, Inc. and
Merrill Lynch Senior Floating Rate Fund II, Inc. A separate division of PFD acts
as the principal underwriter of a number of other investment companies.


                                      C-5
<PAGE>

     (b) Set forth below is information  concerning each director and officer of
PFD.  The  principal  business  address  of each such  person is P.O.  Box 9081,
Princeton,  New Jersey  08543-9081,  except that the  address of Messrs.  Breen,
Crook,   Fatseas  and  Wasel  is  One  Financial  Center,  23rd  Floor,  Boston,
Massachusetts 02111-2665.

<TABLE>
<CAPTION>


                                              Position(s) and Office(s)       Position(s) and Office(s) with
Name                                                  with Pfd                          Registrant
- -----                                          ----------------------       ----------------------------------
<S>                                           <C>                           <C>
Terry K. Glenn ..............................  President and Director        President and Trustee

Michael G. Clark ............................  Treasurer and Director        None

Thomas J. Verage ............................  Director                      None

Robert W. Crook .............................  Senior Vice President         None

Michael J. Brady ............................  Vice President                None

William M. Breen ............................  Vice President                None

Donald C. Burke .............................  Vice President                Vice President and Treasurer

James T. Fatseas ............................  Vice President                None

Debra W. Landsman-Yaros .....................  Vice President                None

Michelle T. Lau .............................  Vice President                None

Salvatore Venezia ...........................  Vice President                None

William Wasel ...............................  Vice President                None

Robert Harris ...............................  Secretary                     None

</TABLE>

     (c) Not applicable.


Item 28.  Location of Accounts and Records

     All  accounts,  books and other  documents  required  to be  maintained  by
Section  31(a) of the 1940 Act and the rules  thereunder  are  maintained at the
offices  of the  Registrant  (800  Scudders  Mill Road,  Plainsboro,  New Jersey
08536),  and its transfer agent,  Financial Data Services,  Inc. (4800 Deer Lake
Drive East, Jacksonville, Florida 32246-6484).


Item 29.  Management Services

     Other than as set forth under the caption  "Management  of the Fund -- Fund
Asset  Management" in the  Prospectus  constituting  Part A of the  Registration
Statement  and  under  "Management  of the  Trust  --  Management  and  Advisory
Arrangements" in the Statement of Additional Information  constituting Part B of
the   Registration   Statement,   the   Registrant   is  not  a  party   to  any
management-related service contract.


Item 30.  Undertakings.

     Not applicable.


                                      C-6
<PAGE>

                                   SIGNATURES


     Pursuant  to the  requirements  of the  Securities  Act and the  Investment
Company Act, the  Registrant  certifies that it meets all the  requirements  for
effectiveness of this Registration  Statement  pursuant to Rule 485(b) under the
Securities Act and has duly caused this  Registration  Statement to be signed on
its behalf by the undersigned,  duly authorized,  in the Township of Plainsboro,
and the State of New Jersey, on the 24th day of November, 1999.


                          MERRILL LYNCH MULTI-STATE MUNICIPAL SERIES TRUST
                                            (Registrant)


                      By:                /s/ DONALD C. BURKE
                                     ------------------------------------------
                           (Donald C. Burke, Vice President and Treasurer)


     Pursuant to the  requirements  of the  Securities  Act,  this  Registration
Statement has been signed below by the following  persons in the  capacities and
on the date(s) indicated.

<TABLE>
<CAPTION>

                    Signature                                    Title                           Date
                    ---------                                    ----                            ----
<S>                                                   <C>                                  <C>
                 TERRY K. GLENN*                      President and Trustee
- ----------------------------------------------          (Principal Executive Officer)
                (Terry K. Glenn)

               /s/ DONALD C. BURKE                    Vice President and Treasurer         November 24, 1999
- ----------------------------------------------          (Principal Financial and
                (Donald C. Burke)                       Accounting Officer)

               JAMES H. BODURTHA*                     Trustee
- ----------------------------------------------
               (James H. Bodurtha)

               HERBERT I. LONDON*                     Trustee
- ----------------------------------------------
               (Herbert I. London)

                ROBERT R. MARTIN*                     Trustee
- ----------------------------------------------
               (Robert R. Martin)

                 JOSEPH L. MAY*                       Trustee
- ----------------------------------------------
                 (Joseph L. May)

                ANDRE F. PEROLD*                      Trustee
- ----------------------------------------------
                (Andre F. Perold)

                 ARTHUR ZEIKEL*                       Trustee
- ----------------------------------------------
                 (Arthur Zeikel)

*By:           /s/DONALD C. BURKE                                                          November 24, 1999
    ------------------------------------------
       (Donald C. Burke, Attorney-in-Fact)
</TABLE>



                                      C-7
<PAGE>

                                POWER OF ATTORNEY

     The undersigned  Directors/Trustees  and officers of each of the registered
investment  companies  listed below hereby  authorize Terry K. Glenn,  Donald C.
Burke and Joseph T. Monagle,  Jr., or any of them, as attorney-in-fact,  to sign
on his or her behalf in the capacities  indicated any Registration  Statement or
amendment  thereto  (including  post-effective   amendments)  for  each  of  the
following  registered  investment  companies  and to file  the  same,  with  all
exhibits  thereto,  with the Securities and Exchange  Commission:  Merrill Lynch
California  Municipal Series Trust,  Merrill Lynch Multi-State  Municipal Series
Trust,  Merrill  Lynch  Multi-State  Limited  Maturity  Municipal  Series Trust,
Merrill Lynch  Convertible  Fund,  Inc.,  Merrill Lynch  Consults  International
Portfolio,  Merrill Lynch Growth Fund,  Merrill  Lynch World Income Fund,  Inc.,
MuniEnhanced  Fund,  Inc.,   MuniHoldings  California  Insured  Fund  II,  Inc.,
MuniHoldings Florida Insured Fund III, MuniHoldings Michigan Insured Fund, Inc.,
MuniHoldings New York Fund,  Inc.,  MuniHoldings New York Insured Fund II, Inc.,
MuniHoldings New York Insured Fund III, Inc., MuniHoldings  Pennsylvania Insured
Fund,  MuniVest  Pennsylvania  Insured Fund,  MuniYield  Fund,  Inc.,  MuniYield
Arizona Fund,  Inc.,  MuniYield  California  Fund,  Inc.,  MuniYield  California
Insured  Fund,  Inc.,  MuniYield  California  Insured Fund II,  Inc.,  MuniYield
Florida Fund,  MuniYield  Michigan Fund, Inc.,  MuniYield New Jersey Fund, Inc.,
MuniYield New York Insured Fund, Inc., MuniYield New York Insured Fund II, Inc.,
MuniYield Quality Fund, Inc. and MuniYield Quality Fund II, Inc.


Dated: April 7, 1999



                               /s/ TERRY K. GLENN
- --------------------------------------------------------------------------------
                                 Terry K. Glenn
            (President/Principal Executive Officer/Director/Trustee)



                              /s/ JAMES H. BODURTHA
- --------------------------------------------------------------------------------
                                James H. Bodurtha
                               (Director/Trustee)



                              /s/ HERBERT I. LONDON
- --------------------------------------------------------------------------------
                                Herbert I. London
                               (Director/Trustee)



                              /s/ ROBERT R. MARTIN
- --------------------------------------------------------------------------------
                                Robert R. Martin
                               (Director/Trustee)



                                /s/ JOSEPH L. MAY
- --------------------------------------------------------------------------------
                                  Joseph L. May
                               (Director/Trustee)



                               /s/ ANDRE F. PEROLD
- --------------------------------------------------------------------------------
                                 Andre F. Perold
                               (Director/Trustee)



                                /s/ ARTHUR ZEIKEL
- --------------------------------------------------------------------------------
                                  Arthur Zeikel
                               (Director/Trustee)



                               /s/ DONALD C. BURKE
- --------------------------------------------------------------------------------
                                 Donald C. Burke
                (Vice President/Treasurer/Principal Financial and
                               Accounting Officer)

                                      C-8
<PAGE>

                                  EXHIBIT INDEX


Exhibit
Numbers              Description
- --------             ----------

    9         --     Opinion of Brown & Wood LLP, counsel for the Registrant
   10         --     Consent of Deloitte & Touche LLP, independent auditors
                       for the Registrant




                                                                    EXHIBIT 9


                                  BROWN & WOOD

                             ONE WORLD TRADE CENTER
                           NEW YORK, N.Y. 10048-0557

                            TELEPHONE: 212-839-5300
                            FACSIMILE: 212-839-5599




                                                               October 15, 1991

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

Dear Sirs:

     This opinion is furnished in connection with the registration by Merrill
Lynch Arizona Municipal Bond Fund (the "Fund") of Merrill Lynch Multi-State
Municipal Series Trust, a Massachusetts business trust (the "Trust"), of an
indenfinite number of Class A shares of benficial interest, par value $0.10 per
share, and Class B shares of beneficial interest, par value $0.10 per share,
(together, the "Shares"), under the Securities Act of 1933 pursuant to a
registration statement of Form N-1A (File No. 33-41311), as amended (the
"Registration Statement").

     As counsel for the Fund, we are familiar with the proceedings taken by it
in connection with the authorization, issuance and sale of the Shares. In
addition, we have examined and are familiar with the Declaration of Trust of the
Turst, By-Law of the Trust, the instrument establishing the Fund as a series of
the Trust, the instrument designating the Class A and


<PAGE>


Class B Shares, and such other documents as we have deemed relevant to the
matters referred to in this opinion.

     Based upon the foregoing, we are of the opinion that the Shares, upon
issuance and sale in the manner referred to in the Registration Statement for
consideration not less than the par value thereof, will be legally issued, fully
paid and non-assessable shares of beneficial interest of the Fund.

     In rendering this opinion, we have relied as to matters of Massachusetts
law upon an opinion of Gaston & Snow, dated September 16, 1991, rendered to the
Trust.

     We hereby consent to the filing of this opinion as an exhibit to the
Registration Statement and to the use of our name in the prospectus and
statement of additional information constituting parts thereof.

                                                  Very truly yours,


                                                  /s/ BROWN & WOOD








                                                                      EXHIBIT 10





INDEPENDENT AUDITORS' CONSENT

Merrill Lynch Arizona Municipal Bond Fund of
Merrill Lynch Multi-State Municipal Series Trust:



We consent to the  incorporation by reference in this  Post-Effective  Amendment
No. 10 to  Registration  Statement  No.  33-41311 of our report dated August 31,
1999  appearing in the annual  report to  shareholders  of Merrill Lynch Arizona
Municipal Bond Fund for the year ended July 31, 1999, and to the reference to us
under the caption "Financial  Highlights" in the Prospectus,  which is a part of
such Registration Statement.







/s/ Deloitte & Touche LLP
- --------------------------
Deloitte & Touche LLP
Princeton, New Jersey
November 24, 1999





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