DEAN WITTER HEALTH SCIENCES TRUST
485BPOS, 1997-07-17
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<PAGE>

    AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 17, 1997
                                                    REGISTRATION NOS.: 33-48189
                                                                       811-6683
===============================================================================

                       SECURITIES AND EXCHANGE COMMISSION

                             WASHINGTON, D.C. 20549

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

                                   FORM N-1A
                             REGISTRATION STATEMENT
                        UNDER THE SECURITIES ACT OF 1933                  [ ]
                          PRE-EFFECTIVE AMENDMENT NO.
                         POST-EFFECTIVE AMENDMENT NO. 6                   [X]
                                     AND/OR
              REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY
                                  ACT OF 1940                             [ ]
                                AMENDMENT NO. 7                           [X]

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

                       DEAN WITTER HEALTH SCIENCES TRUST
                        (A MASSACHUSETTS BUSINESS TRUST)
               (EXACT NAME OF REGISTRANT AS SPECIFIED IN CHARTER)

                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (ADDRESS OF PRINCIPAL EXECUTIVE OFFICE)

       REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: (212) 392-1600

                                BARRY FINK, ESQ.
                             TWO WORLD TRADE CENTER
                            NEW YORK, NEW YORK 10048
                    (NAME AND ADDRESS OF AGENT FOR SERVICE)

                                    COPY TO:

                            DAVID M. BUTOWSKY, ESQ.
                             GORDON ALTMAN BUTOWSKY
                             WEITZEN SHALOV & WEIN
                              114 WEST 47TH STREET
                            NEW YORK, NEW YORK 10036

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

                 APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING:

 As soon as practicable after this Post-Effective Amendment becomes effective.

 IT IS PROPOSED THAT THIS FILING WILL BECOME EFFECTIVE (CHECK APPROPRIATE BOX)

         [ ]   immediately upon filing pursuant to paragraph (b)
         [X]   on July 28, 1997 pursuant to paragraph (b)
         [ ]   60 days after filing pursuant to paragraph (a)
         [ ]   on (date) pursuant to paragraph (a) of rule 485.

THE REGISTRANT HAS REGISTERED AN INDEFINITE NUMBER OF ITS SHARES UNDER THE
SECURITIES ACT OF 1933 PURSUANT TO SECTION (A)(1) OF RULE 24F-2 UNDER THE
INVESTMENT COMPANY ACT OF 1940. THE REGISTRANT FILED THE RULE 24F-2 NOTICE
FOR ITS FISCAL YEAR ENDED JULY 31, 1996, WITH THE SECURITIES AND EXCHANGE
COMMISSION AUGUST 29, 1996.

           AMENDING THE PROSPECTUS AND UPDATING FINANCIAL STATEMENTS

===============================================================================

<PAGE>

                      DEAN WITTER HEALTH SCIENCES TRUST

                            CROSS-REFERENCE SHEET

FORM N-1A
PART A
ITEM           CAPTION PROSPECTUS
- ----           ------------------
1. ........... Cover Page
2. ........... Summary of Fund Expenses; Prospectus Summary
3. ........... Financial Highlights; Performance Information
4. ........... Investment Objective and Policies; Risk
                Considerations; The Fund and its Management; Cover
                Page; Investment Restrictions; Prospectus Summary;
                Financial Highlights
5. ........... The Fund and Its Management; Back Cover;
                Investment Objective and Policies
6. ........... Dividends, Distributions and Taxes; Additional
                Information
7. ........... Purchase of Fund Shares; Shareholder Services
8. ........... Repurchases and Redemptions; Shareholder Services
9. ........... Not Applicable
               
PART B         
ITEM           STATEMENT OF ADDITIONAL INFORMATION
- ----           -----------------------------------
10. .......... Cover Page
11. .......... Table of Contents
12. .......... The Fund and Its Management
13. .......... Investment Practices and Policies; Investment
                Restrictions; Portfolio Transactions and Brokerage
14. .......... The Fund and Its Management; Trustees and
                Officers
15. .......... Trustees and Officers
16. .......... The Fund and Its Management; The Distributor; Purchase
                of Fund Shares; Custodian and Transfer
                Agent; Independent Accountants
17. .......... Portfolio Transactions and Brokerage
18. .......... Description of Shares; Validity of
                Shares of Beneficial Interest
19. .......... Redemptions and Repurchases; The Distributor;
                Purchase of Fund Shares; Statement of Assets
                and Liabilities; Shareholder Services
20. .......... Dividends, Distributions and Taxes
21. .......... Not applicable
22. .......... Dividends, Distributions and Taxes
23. .......... Financial Statements
           
PART C

   Information required to be included in Part C is set forth under the
appropriate item, so numbered, in Part C of this Registration Statement.

<PAGE>

   
                                  PROSPECTUS
                                 JULY 28, 1997
                                 -------------
    

    Dean Witter Health Sciences Trust (the "Fund") is an open-end,
non-diversified management investment company whose investment objective is
capital appreciation. The Fund seeks to achieve its objective by investing in
securities of companies in the health sciences industry throughout the world.
(See "Investment Objective and Policies.")

   
    The Fund offers four classes of shares (each, a "Class"), each with a
different combination of sales charges, ongoing fees and other features. The
different distribution arrangements permit 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. Shares of the Fund held prior to
July 28, 1997 have been designated Class B shares. (See "Purchase of Fund
Shares--Alternative Purchase Arrangements.")

    This Prospectus sets forth concisely the information you should know before
investing in the Fund. It should be read and retained for future reference.
Additional information about the Fund is contained in the Statement of
Additional Information, dated July 28, 1997, which has been filed with the
Securities and Exchange Commission, and which is available at no charge upon
request of the Fund at the address or telephone numbers listed on this page.
The Statement of Additional Information is incorporated herein by reference.
    

TABLE OF CONTENTS
   
Prospectus Summary/ 2
Summary of Fund Expenses/ 4
Financial Highlights/ 6
The Fund and its Management/ 6
Investment Objective and Policies/ 7
 Risk Considerations/ 12
Investment Restrictions/ 14
Purchase of Fund Shares/ 15
Shareholder Services/ 25
Redemptions and Repurchases/ 28
Dividends, Distributions and Taxes/ 29
Performance Information/ 30
Additional Information/ 31
    

Shares of the Fund are not deposits or obligations of, or guaranteed or
endorsed by, any bank, and the shares are not federally insured by the
Federal Deposit Insurance Corporation, the Federal Reserve Board, or any
other agency.

THESE SECURITIES HAVE NOT BEEN APPROVED OR DISAPPROVED BY THE SECURITIES AND
EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION NOR HAS THE SECURITIES
AND EXCHANGE COMMISSION OR ANY STATE SECURITIES COMMISSION PASSED UPON THE
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY
IS A CRIMINAL OFFENSE.

Dean Witter                                     DEAN WITTER DISTRIBUTORS INC.
Health Sciences Trust                           DISTRIBUTOR                  
Two World Trade Center                          
New York, New York 10048
(212) 392-2550 or
(800) 869-NEWS (toll-free)

<PAGE>

   
PROSPECTUS SUMMARY
- -------------------------------------------------------------------------------
The                The Fund is organized as a Massachusetts business trust, and 
Fund               is an open-end, non-diversified management investment
                   company which invests in securities of companies in the
                   health sciences industry throughout the world.
- -------------------------------------------------------------------------------
Shares Offered     Shares of beneficial interest with $0.01 par value (see page
                   31). The Fund offers four Classes of shares, each with a
                   different combination of sales charges, ongoing fees and
                   other features (see pages 15-25).

- -------------------------------------------------------------------------------
Minimum            The minimum initial investment for each Class is $1,000 
Purchase           ($100 if the account is opened through EasyInvest (Service
                   Mark) ). Class D shares are only available to persons
                   investing $5 million or more and to certain other limited
                   categories of investors. For the purpose of meeting the
                   minimum $5 million investment for Class D shares, and
                   subject to the $1,000 minimum initial investment for each
                   Class of the Fund, an investor's existing holdings of Class
                   A shares and shares of funds for which Dean Witter
                   InterCapital Inc. serves as investment manager ("Dean Witter
                   Funds") that are sold with a front-end sales charge, and
                   concurrent investments in Class D shares of the Fund and
                   other Dean Witter Funds that are multiple class funds, will
                   be aggregated. The minimum subsequent investment is $100
                   (see page 15).
    
- -------------------------------------------------------------------------------
Investment         The investment objective of the Fund is capital appreciation.
Objective
- -------------------------------------------------------------------------------
   
Investment         The Fund will seek to achieve its investment objective by 
Policies           investing at least 65% of its total assets in the equity
                   securities of health science companies throughout the world.
                   The Fund's portfolio will primarily consist of common
                   stocks, preferred stocks, convertible preferred stocks,
                   securities convertible into common stocks and warrants. The
                   Fund may also invest in investment grade debt securities
                   when the Investment Manager believes that such securities
                   present a favorable opportunity for capital appreciation and
                   in various other financial instruments, such as options,
                   futures and options on futures, to hedge against adverse
                   price movements in the securities held in its portfolio, as
                   well as in the securities it might wish to purchase, and the
                   currencies in which they are denominated (see pages 7
                   through 11).
- -------------------------------------------------------------------------------
Investment         Dean Witter InterCapital Inc. ("InterCapital"), the 
Manager            Investment Manager of the Fund, and its wholly-owned
                   subsidiary, Dean Witter Services Company Inc., serve in
                   various investment management, advisory, management and
                   administrative capacities to 100 investment companies and
                   other portfolios with assets of approximately $96.6 billion
                   at June 30, 1997 (see page 6).
- -------------------------------------------------------------------------------
Management         The Investment Manager receives a monthly fee at the annual 
Fee                rate of 1.0% of daily net assets, scaled down to 0.95% on
                   assets over $500 million (see page 7).
- -------------------------------------------------------------------------------
Distributor and    Dean Witter Distributors Inc. (the "Distributor"). The Fund 
Distribution       has adopted a distribution plan pursuant to Rule 12b-1 under
Fee                the Investment Company Act (the "12b-1 Plan") with respect  
                   to the distribution fees paid by the Class A, Class B and   
                   Class C shares of the Fund to the Distributor. The entire   
                   12b-1 fee payable by Class A and a portion of the 12b-1 fee 
                   payable by each of Class B and Class C equal to 0.25% of the
                   average daily net assets of the Class are currently each    
                   characterized as a service fee within the meaning of the    
                   National Association of Securities Dealers, Inc. guidelines.
                   The remaining portion of the 12b-1 fee, if any, is          
                   characterized as an asset-based sales charge (see pages 15  
                   and 23).                                                    
- -------------------------------------------------------------------------------
Alternative        Four classes of shares are offered: 
Purchase           
Arrangements       o Class A shares are offered with a front-end sales charge,
                   starting at 5.25% and reduced for larger purchases.
                   Investments of $1 million or more (and investments by
                   certain other limited categories of investors) are not
                   subject to any sales charge at the time of purchase but a
                   contingent deferred sales charge ("CDSC") of 1.0% may be
                   imposed on redemptions within one year of purchase. The Fund
                   is authorized to reimburse the Distributor for specific
                   expenses incurred in promoting the distribution of the
                   Fund's Class A shares and servicing shareholder accounts
                   pursuant to the Fund's 12b-1 Plan. Reimbursement may in no
                   event exceed an amount equal to payments at an annual rate
                   of 0.25% of average daily net assets of the Class (see pages
                   15, 18 and 23).

                                       2
<PAGE>

- -------------------------------------------------------------------------------
                   o Class B shares are offered without a front-end sales
                   charge, but will in most cases be subject to a CDSC (scaled
                   down from 5.0% to 1.0%) if redeemed within six years after
                   purchase. The CDSC will be imposed on any redemption of
                   shares if after such redemption the aggregate current value
                   of a Class B account with the Fund falls below the aggregate
                   amount of the investor's purchase payments made during the
                   six years preceding the redemption. A different CDSC
                   schedule applies to investments by certain qualified plans.
                   Class B shares are also subject to a 12b-1 fee assessed at
                   the annual rate of 1.0% of the lesser of: (a) the average
                   daily net sales of the Fund's Class B shares or (b) the
                   average daily net assets of Class B. All shares of the Fund
                   held prior to July 28, 1997 have been designated Class B
                   shares. Shares held before May 1, 1997 will convert to Class
                   A shares in May, 2007. In all other instances, Class B
                   shares convert to Class A shares approximately ten years
                   after the date of the original purchase (see pages 15, 20
                   and 23).

                   o Class C shares are offered without a front-end sales
                   charge, but will in most cases be subject to a CDSC of 1.0%
                   if redeemed within one year after purchase. The Fund is
                   authorized to reimburse the Distributor for specific
                   expenses incurred in promoting the distribution of the
                   Fund's Class C shares and servicing shareholder accounts
                   pursuant to the Fund's 12b-1 Plan. Reimbursement may in no
                   event exceed an amount equal to payments at an annual rate
                   of 1.0% of average daily net assets of the Class (see pages
                   15 and 23). 

                   o Class D shares are offered only to investors meeting an 
                   initial investment minimum of $5 million and to certain other
                   limited categories of investors. Class D shares are offered 
                   without a front-end sales charge or CDSC and are not subject 
                   to any 12b-1 fee (see pages 15 and 23).
- -------------------------------------------------------------------------------
Dividends and      Dividends from net investment income are paid quarterly and
Capital Gains      distributions from net capital gains, if any, are paid at  
Distributions      least annually. The Fund may, however, determine to retain 
                   all or part of any net long-term capital gains in any year 
                   for reinvestment. Dividends and capital gains distributions
                   paid on shares of a Class are automatically reinvested in  
                   additional shares of the same Class at net asset value     
                   unless the shareholder elects to receive cash. Shares      
                   acquired by dividend and distribution reinvestment will not
                   be subject to any sales charge or CDSC (see pages 25 and   
                   29).                                                       
- -------------------------------------------------------------------------------
Redemption         Shares are redeemable by the shareholder at net asset value
                   less any applicable CDSC on Class A, Class B or Class C
                   shares. An account may be involuntarily redeemed if the
                   total value of the account is less than $100 or, if the
                   account was opened through EasyInvest(Service Mark), if
                   after twelve months the shareholder has invested less than
                   $1,000 in the account (see page 28).

- -------------------------------------------------------------------------------
Risks              The value of the Fund's portfolio securities, and therefore
                   the net asset value of the Fund's shares, will fluctuate
                   with changes in the market value of its portfolio
                   securities. Unlike more widely diversified mutual funds, the
                   Fund is subject to industry risk, i.e., the possibility that
                   a particular group of related stocks will decline in price.
                   In addition, the health sciences industry generally is
                   subject to substantial government regulation; accordingly,
                   changes in government policies or regulation could have a
                   material effect on the demand for products and services
                   offered by health science companies and, therefore, could
                   affect the performance of the Fund. It should be recognized
                   that the foreign securities and markets in which the Fund
                   invests pose different and greater risks than those
                   customarily associated with domestic securities and their
                   markets. Furthermore, investors should consider other risks
                   associated with a portfolio which contains international
                   securities, including fluctuations in foreign currency
                   exchange rates (i.e., if a substantial portion of the Fund's
                   assets are denominated in foreign currencies which decrease
                   in value with respect to the U.S. dollar, the value of the
                   investor's shares and the distributions made on those shares
                   will, likewise, decrease in value), foreign securities
                   exchange controls and foreign tax rates, as well as
                   investments in forward currency contracts, options and
                   futures contracts (see pages 12 through 14).
- -------------------------------------------------------------------------------
    

  The above is qualified in its entirety by the detailed information appearing
  elsewhere in this Prospectus and in the Statement of Additional Information.

                                       3
<PAGE>

   
SUMMARY OF FUND EXPENSES
- -------------------------------------------------------------------------------

The following table illustrates all expenses and fees that a shareholder of
the Fund will incur. The expenses and fees set forth in the table are based
on the expenses and fees for the fiscal year ended July 31, 1996.
    

   
<TABLE>
<CAPTION>
                                                       CLASS A      CLASS B      CLASS C      CLASS D
                                                       -------      -------      -------      -------
<S>                                                      <C>          <C>          <C>         <C>
Shareholder Transaction Expenses
- --------------------------------
Maximum Sales Charge Imposed on Purchases (as a
 percentage of offering price) .....................     5.25%(1)     None         None        None
Sales Charge Imposed on Dividend Reinvestments  ....     None         None         None        None
Maximum Contingent Deferred Sales Charge
 (as a percentage of original purchase price or
 redemption proceeds)...............................     None(2)      5.00%(3)     1.00%(4)    None
Redemption Fees.....................................     None         None         None        None
Exchange Fee........................................     None         None         None        None
Annual Fund Operating Expenses (as a percentage 
of average net assets)
- -----------------------------------------------
Management Fees ....................................     1.00%        1.00%        1.00%       1.00%
12b-1 Fees (5)(6)...................................     0.25%        1.00%        1.00%       None
Other Expenses .....................................     0.20%        0.20%        0.20%       0.20%
Total Fund Operating Expenses (7)...................     1.45%        2.20%        2.20%       1.20%
</TABLE>
    

   
- --------------
(1)    Reduced for purchases of $25,000 and over (see "Purchase of Fund
       Shares--Initial Sales Charge Alternative--Class A Shares").
(2)    Investments that are not subject to any sales charge at the time of
       purchase are subject to a CDSC of 1.00% that will be imposed on
       redemptions made within one year after purchase, except for certain
       specific circumstances (see "Purchase of Fund Shares--Initial Sales
       Charge Alternative--Class A Shares").
(3)    The CDSC is scaled down to 1.00% during the sixth year, reaching zero
       thereafter.
(4)    Only applicable to redemptions made within one year after purchase (see
       "Purchase of Fund Shares--Level Load Alternative--Class C Shares").
(5)    The 12b-1 fee is accrued daily and payable monthly. The entire 12b-1
       fee payable by Class A and a portion of the 12b-1 fee payable by each
       of Class B and Class C equal to 0.25% of the average daily net assets
       of the Class are currently each characterized as a service fee within
       the meaning of National Association of Securities Dealers, Inc.
       ("NASD") guidelines and are payments made for personal service and/or
       maintenance of shareholder accounts. The remainder of the 12b-1 fee, if
       any, is an asset-based sales charge, and is a distribution fee paid to
       the Distributor to compensate it for the services provided and the
       expenses borne by the Distributor and others in the distribution of the
       Fund's shares (see "Purchase of Fund Shares--Plan of Distribution").
(6)    Upon conversion of Class B shares to Class A shares, such shares will
       be subject to the lower 12b-1 fee applicable to Class A shares. No
       sales charge is imposed at the time of conversion of Class B shares to
       Class A shares. Class C shares do not have a conversion feature and,
       therefore, are subject to an ongoing 1.00% distribution fee (see
       "Purchase of Fund Shares--Alternative Purchase Arrangements").
(7)    There were no outstanding shares of Class A, Class C or Class D prior
       to the date of this Prospectus. Accordingly, "Total Fund Operating
       Expenses," as shown above with respect to those Classes, are based upon
       the sum of 12b-1 Fees, Management Fees and estimated "Other Expenses."
    

                                       4
<PAGE>

- -----------------------------------------------------------------------------
   
<TABLE>
<CAPTION>
EXAMPLES                                                         1 YEAR   3 YEARS   5 YEARS   10 YEARS
- --------                                                         ------   -------   -------   --------
<S>                                                                <C>      <C>       <C>        <C>
You would pay the following expenses on a $1,000 investment
assuming (1) a 5% annual return and (2) redemption at the end
of each time period:
  Class A ......................................................   $66       $96      $128       $217
  Class B ......................................................   $72       $99      $138       $253
  Class C.......................................................   $32       $69      $118       $253
  Class D ......................................................   $12       $38      $ 66       $145

You would pay the following expenses on the same $1,000
investment assuming no redemption at the end of the period:
  Class A ......................................................   $66       $96      $128       $217
  Class B ......................................................   $22       $69      $118       $253
  Class C ......................................................   $22       $69      $118       $253
  Class D ......................................................   $12       $38      $ 66       $145
</TABLE>
    

   
   THE ABOVE EXAMPLES SHOULD NOT BE CONSIDERED A REPRESENTATION OF PAST OR
FUTURE EXPENSES OR PERFORMANCE. ACTUAL EXPENSES OF EACH CLASS MAY BE GREATER
OR LESS THAN THOSE SHOWN.

   The purpose of this table is to assist the investor in understanding the
various costs and expenses that an investor in the Fund will bear directly or
indirectly. For a more complete description of these costs and expenses, see
"The Fund and its Management," "Purchase of Fund Shares--Plan of
Distribution" and "Redemptions and Repurchases."

   Long-term shareholders of Class B and Class C may pay more in sales
charges, including distribution fees, than the economic equivalent of the
maximum front-end sales charges permitted by the NASD.
    

                                       5
<PAGE>

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

   The following ratios and per share data for a share of beneficial interest
outstanding throughout each of the periods through July 31, 1996 have been
audited by Price Waterhouse LLP, independent accountants. The information for
the six-month period ended January 31, 1997 is unaudited. The financial
highlights should be read in conjunction with the financial statements, notes
thereto and the unqualified report of independent accountants, which are
contained in the Statement of Additional Information. Further information
about the performance of the Fund is contained in the Fund's Annual Report to
Shareholders, which may be obtained without charge upon request to the Fund.
All shares of the Fund held prior to July 28, 1997 have been designated Class
B shares.
    

   
<TABLE>
<CAPTION>
                                                                                                         FOR THE PERIOD
                                           FOR THE SIX             FOR THE YEAR ENDED JULY 31           OCTOBER 30, 1992*
                                           MONTHS ENDED     -----------------------------------------        THROUGH
                                         JANUARY 31, 1997      1996           1995            1994        JULY 31, 1993
- -------------------------------------------------------------------------------------------------------------------------
                                            (unaudited)
<S>                                        <C>                <C>            <C>             <C>             <C>
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period  ..   $     14.97        $12.88         $ 9.32          $ 9.22          $10.00
                                           -----------        ------         ------          ------          ------
Net investment loss ....................         (0.16)        (0.26)         (0.24)          (0.22)          (0.08)
Net realized and unrealized gain
 (loss).................................          1.85          3.44           3.80            0.32           (0.70)
                                           -----------        ------         ------          ------          ------
Total from investment operations  ......          1.69          3.18           3.56            0.10           (0.78)
                                           -----------        ------         ------          ------          ------
Less distributions from net realized
 gain...................................         (0.95)        (1.09)           --              --              --
                                           -----------        ------         ------          ------          ------
Net asset value, end of period .........   $     15.71        $14.97         $12.88          $ 9.32          $ 9.22
                                           ===========        ======         ======          ======          ======
TOTAL INVESTMENT RETURN+ ...............         11.90%(1)     24.84%         38.20%           1.08%          (7.80)%(1)
RATIOS TO AVERAGE NET ASSETS:
Expenses................................          2.22%(2)      2.20%          2.30%           2.30%           2.38%(2)
Net investment loss.....................         (2.09)%(2)    (2.03)%        (2.05)%         (2.06)%         (1.38)%(2)
SUPPLEMENTAL DATA:
Net assets, end of period, in
 thousands..............................      $492,370      $442,876       $273,735        $228,573        $231,646
Portfolio turnover rate ................           33%(1)         63%           145%            106%             55%(1)
Average commission rate paid............       $0.0547       $0.0562          --              --              --
</TABLE>

- --------------
*      Commencement of operations.
+      Does not reflect the deduction of sales charge. Calculated based on the
       net asset value as of the last business day of the period.
(1)    Not annualized.
(2)    Annualized.

    

THE FUND AND ITS MANAGEMENT
- -----------------------------------------------------------------------------

   
   Dean Witter Health Sciences Trust (the "Fund") is an open-end,
non-diversified management investment company. The Fund is a trust of the
type commonly known as a "Massachusetts business trust" and was organized
under the laws of The Commonwealth of Massachusetts on May 26, 1992.
    

   Dean Witter InterCapital Inc. ("InterCapital" or the "Investment
Manager"), whose address is Two

                                       6
<PAGE>

   
World Trade Center, New York, New York 10048, is the Fund's Investment
Manager. The Investment Manager, which was incorporated in July, 1992, is a
wholly-owned subsidiary of Morgan Stanley, Dean Witter, Discover & Co., a
preeminent global financial services firm that maintains leading market
positions in each of its three primary businesses--securities, asset
management and credit services.

   InterCapital and its wholly-owned subsidiary, Dean Witter Services Company
Inc., serve in various investment management, advisory, management and
administrative capacities to 100 investment companies, thirty of which are
listed on the New York Stock Exchange, with combined assets of approximately
$93.1 billion at June 30, 1997. The Investment Manager also manages
portfolios of pension plans, other institutions and individuals which
aggregated approximately $3.5 billion at such date.
    

   The Fund has retained the Investment Manager, pursuant to an Investment
Management Agreement, to provide administrative services, manage its business
affairs and manage the investment of the Fund's assets, including the placing
of orders for the purchase and sale of portfolio securities. InterCapital has
retained Dean Witter Services Company Inc. to perform the aforementioned
administrative services for the Fund.

   The Fund's Board of Trustees reviews the various services provided by or
under the direction of the Investment Manager to ensure that the Fund's
general investment policies and programs are being properly carried out and
that administrative services are being provided to the Fund in a satisfactory 
manner. 

   As full compensation for the services and facilities furnished to the Fund 
and for expenses of the Fund assumed by the Investment Manager, the Fund pays 
the Investment Manager monthly compensation calculated daily by applying the 
annual rate of 1.0% of the daily net assets up to $500 million, scaled down 
to 0.95% on assets over $500 million, determined as of the close of each 
business day. For the fiscal year ended July 31, 1996, the Fund accrued total 
compensation to the Investment Manager amounting to 1.0% of the Fund's daily 
net assets and the Fund's total expenses amounted to 2.20% of the Fund's 
daily net assets. 

INVESTMENT OBJECTIVE AND POLICIES 
- ----------------------------------------------------------------------------- 

   The investment objective of the Fund is capital appreciation. The 
investment objective of the Fund is a fundamental policy and may not be 
changed without the approval of the holders of a majority of the Fund's 
shares. There is no assurance that the Fund's investment objective will be 
achieved. 

   The Fund will seek to achieve its investment objective by investing at 
least 65% of its total assets in the equity securities of health science 
companies throughout the world. A health science company is defined as a 
company which is principally engaged in the health sciences industry. A 
company is deemed to be "principally engaged" if it has at least 50% of its 
earnings or revenues derived from health sciences activities, as defined 
below, or at least 50% of its assets is devoted to such activities, based 
upon the financial statements of the company's most recently reported fiscal 
year. 

   In addition, the Investment Manager may invest in companies other than 
health science companies if it considers that such companies have potential 
for capital appreciation primarily as a result of particular products, 
technology, patents or other market advantages in the health sciences 
industry. The Fund does not anticipate that companies not principally engaged 
in the health sciences industry will represent more than 20% of the Fund's 
investments. 

   Health sciences activities are defined as activities which consist of the 
research, development, production or distribution of products and services by 
health science companies which include, but are not limited to, companies 
such as: pharmaceutical companies; companies involved in the ownership and/or 
operation or delivery of health care services such as hospitals, clinical 
test laboratories, convalescent and mental health care facilities, 
rehabilita- 

                                       7
<PAGE>

tion centers, and products and services for home care; companies involved in 
biotechnology, medical diagnostics, biochemical, and nuclear research and 
development; and companies that produce and manufacture medical, dental and 
optical supplies and equipment. 

   The Fund's portfolio will primarily consist of common stocks. The Fund may 
also invest up to 35% of its total assets in preferred stock and in 
investment grade domestic and foreign debt securities of any type of issuer 
(such as foreign and domestic corporations and foreign and domestic 
governments and their political subdivisions), including bonds, notes, 
debentures and debt securities convertible into equity if the Investment 
Manager believes that such securities present a favorable opportunity for 
capital appreciation. The term investment grade consists of debt instruments 
rated Baa or higher by Moody's Investors Service, Inc. ("Moody's") or BBB or 
higher by Standard & Poor's Corporation ("S&P") or, if not rated, determined 
to be of comparable quality by the Investment Manager. Investments in 
securities rated either Baa by Moody's or BBB by S&P may have speculative 
characteristics and, therefore, changes in economic conditions or other 
circumstances are more likely to weaken their capacity to make principal and 
interest payments than would be the case with investments in securities with 
higher credit ratings. If a debt instrument held by the Fund is rated BBB or 
Baa and is subsequently downgraded by a rating agency, the Fund will retain 
such security in its portfolio until the Investment Manager determines that 
it is practicable to sell the security without undue market or tax 
consequences to the Fund. In the event that such downgraded securities 
constitute 5% or more of the Fund's total assets, the Investment Manager will 
sell immediately sufficient securities to reduce the total to below 5%. The 
Fund may invest in various other financial instruments such as warrants and 
forward foreign currency exchange contracts, futures and options, including 
stock index futures contracts and related options in an attempt to hedge its 
portfolio (see below). 

   Foreign Securities. While the Fund expects that, from time to time, a 
significant portion of its investments will be in securities of U.S. 
companies, the Fund's Investment Manager believes that a portfolio comprised 
only of U.S. securities does not provide the greatest potential for capital 
appreciation from an investment in the health sciences industry. It believes 
that a worldwide focus is necessary if the Fund is to take advantage of the 
increasing opportunities presented by health science companies headquartered 
throughout the world. The Fund may invest substantially in securities 
denominated in one or more currencies. The Investment Manager believes that 
by investing worldwide, the Fund can better position itself to take advantage 
of available health sciences investment opportunities (see "Risk 
Considerations"). 

   The Fund may also invest in securities of foreign issuers in the form of 
American Depository Receipts (ADRs), European Depository Receipts (EDRs) or 
other similar securities convertible into securities of foreign issuers. 
These securities may not necessarily be denominated in the same currency as 
the securities into which they may be converted. ADRs are receipts typically 
issued by a United States bank or trust company evidencing ownership of the 
underlying securities. EDRs are European receipts evidencing a similar 
arrangement. Generally, ADRs, in registered form, are designed for use in the 
United States securities markets and EDRs, in bearer form, are designed for 
use in European securities markets. 

   Private Placements/Illiquid Securities. The Fund may invest up to 5% of 
its total assets in securities that are subject to restrictions on resale 
(referred to as private placements or restricted securities) because they 
have not been registered under the Securities Act of 1933, as amended, or 
which are otherwise not readily marketable. (Securities eligible for resale 
pursuant to Rule 144A of the Securities Act, and determined to be liquid 
pursuant to the procedures adopted by the Board of Trustees, are not subject 
to the foregoing restriction.) If a restricted security is determined to be 
"liquid," such security will not be included within the category "illiquid 
securities," which is limited by the Fund's investment policies to 15% of the 
Fund's net assets. 

                                       8
<PAGE>

Investing in Rule 144A securities could have the effect of increasing the 
level of Fund illiquidity to the extent the Fund, at a particular point in 
time, may be unable to find qualified institutional buyers interested in 
purchasing such securities. Generally, OTC options and the assets used as 
"cover" for written OTC options are illiquid securities. However, the Fund is 
permitted to treat the securities it uses as cover for written OTC options as 
liquid provided it follows a procedure whereby it will sell OTC options only 
to qualified dealers who agree that the Fund may repurchase such options at a 
maximum price to be calculated pursuant to a predetermined formula set forth 
in the option agreement. See "Investment Practices and Policies" in the 
Statement of Additional Information. 

   There may be periods during which market conditions warrant reduction of 
some or all of the Fund's securities holdings. During such periods, the Fund 
may adopt a temporary "defensive" posture in which greater than 35% of its 
total assets are invested in cash (U.S. dollars, foreign currencies or 
multinational currency units) and/or invest any portion of its assets in high 
quality debt securities or money market instruments of U.S. or foreign 
issuers. Under such circumstances, the money market instruments in which the 
Fund may invest are securities issued or guaranteed by U.S. or foreign 
governments; American bank obligations; Eurodollar certificates of deposit; 
obligations of American savings institutions; fully insured certificates of 
deposit; and commercial paper of American issuers rated within the two 
highest grades by Moody's or S&P or, if not rated, are issued by a company 
having an outstanding debt issue rated at least AA by S&P or Aa by Moody's. 

   The Fund is classified as a non-diversified investment company under the 
Investment Company Act of 1940, as amended (the "Act"), and as such is not 
limited by the Act in the proportion of its assets that it may invest in the 
obligations of a single issuer. However, the Fund intends to conduct its 
operations so as to qualify as a "regulated investment company" under 
Subchapter M of the Internal Revenue Code. See "Dividends, Distributions and 
Taxes." In order to qualify, among other requirements, the Fund will limit 
its 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% 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. To the extent that a 
relatively high percentage of the Fund's assets may be invested in the 
securities of a limited number of issuers, the Fund's portfolio securities 
may be more susceptible to any single economic, political or regulatory 
occurrence than the portfolio securities of a diversified investment company. 
The limitations described in this paragraph are not fundamental policies and 
may be revised to the extent applicable Federal income tax requirements are 
revised. 

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS. 

   A forward foreign currency exchange contract ("forward contract") involves 
an obligation to purchase or sell a currency at a future date, which may be 
any fixed number of days from the date of the contract agreed upon by the 
parties, at a price set at the time of the contract. The Fund may enter into 
forward contracts as a hedge against fluctuations in future foreign exchange 
rates. 

   The Fund will enter into forward contracts under various circumstances. 
When the Fund enters into a contract for the purchase or sale of a security 
denominated in a foreign currency, it may, for example, desire to "lock in" 
the price of the security in U.S. dollars or some other foreign currency 
which the Fund is temporarily holding in its portfolio. At other times, when, 
for example, it is believed that the currency of a particular foreign country 
may suffer a substantial decline against the U.S. dollar or some other 
foreign currency, the Fund may enter into a forward contract to sell, for a 
fixed amount of dollars or other currency, the amount of foreign currency 
approximating the value of some or all of the Fund's portfolio securities (or 
securities which 

                                       9
<PAGE>

the Fund has purchased for its portfolio) denominated in such foreign 
currency. Under identical circumstances, the Fund may enter into a forward 
contract to sell, for a fixed amount of U.S. dollars or other currency, an 
amount of foreign currency other than the currency in which the securities to 
be hedged are denominated approximating the value of some or all of the 
portfolio securities to be hedged. This method of hedging, called 
"cross-hedging," will be selected when it is determined that the foreign 
currency in which the portfolio securities are denominated has insufficient 
liquidity or is trading at a discount as compared with some other foreign 
currency with which it tends to move in tandem. 

   In addition, when the Fund anticipates purchasing securities at some time 
in the future, and wishes to lock in the current exchange rate of the 
currency in which those securities are denominated against the U.S. dollar or 
some other foreign currency, it may enter into a forward contract to purchase 
an amount of currency equal to some or all of the value of the anticipated 
purchase, for a fixed amount of U.S. dollars or other currency. Lastly, the 
Fund is permitted to enter into forward contracts with respect to currencies 
in which certain of its portfolio securities are denominated and on which 
options have been written (see "Options and Futures Transactions"). 

OPTIONS AND FUTURES TRANSACTIONS. 

   Call and put options on U.S. Treasury notes, bonds and bills, on various 
foreign currencies and on equity securities are listed on several U.S. and 
foreign securities exchanges and are written in over-the-counter transactions 
("OTC options"). Listed options are issued or guaranteed by the exchange on 
which they trade or by a clearing corporation such as the Options Clearing 
Corporation ("OCC"). Ownership of a listed call option gives the Fund the 
right to buy from the OCC (in the U.S.) or other clearing corporation or 
exchange, the underlying security or currency covered by the option at the 
stated exercise price (the price per unit of the underlying security or 
currency) by filing an exercise notice prior to the expiration date of the 
option. The writer (seller) of the option would then have the obligation to 
sell, to the OCC (in the U.S.) or other clearing corporation or exchange, the 
underlying security or currency at that exercise price prior to the 
expiration date of the option, regardless of its then current market price. 
Ownership of a listed put option would give the Fund the right to sell the 
underlying security or currency to the OCC (in the U.S.) or other clearing 
corporation or exchange at the stated exercise price. Upon notice of exercise 
of the put option, the writer of the option would have the obligation to 
purchase the underlying security or currency from the OCC (in the U.S.) or 
other clearing corporation or exchange at the exercise price. 

   Futures Contracts. The Fund may purchase and sell futures contracts that 
are currently traded, or may in the future be traded, on U.S. and foreign 
commodity exchanges on common stocks, such underlying fixed-income securities 
as U.S. Treasury bonds, notes, and bills and/or any foreign government 
fixed-income security ("interest rate" futures), on various currencies 
("currency" futures) and on such indexes of U.S. or foreign equity and 
fixed-income securities as may exist or come into being, such as the Standard 
& Poor's 500 Index or the Financial Times Equity Index ("index" futures). As 
a futures contract purchaser, the Fund incurs an obligation to take delivery 
of a specified amount of the obligation underlying the contract at a 
specified time in the future for a specified price. As a seller of a futures 
contract, the Fund incurs an obligation to deliver the specified amount of 
the underlying obligation at a specified time in return for an agreed upon 
price. 

   Options on Futures Contracts. The Fund may purchase and write call and put 
options on futures contracts which are traded on an exchange and enter into 
closing transactions with respect to such options to terminate an existing 
position. 

OTHER INVESTMENT POLICIES 

   Repurchase Agreements. The Fund may enter into repurchase agreements, 
which may be viewed as a type of secured lending by the Fund, and which 
typically involve the acquisition by the Fund of debt 

                                       10
<PAGE>

securities, from a selling financial institution such as a bank, savings and 
loan association or broker-dealer. The agreement provides that the Fund will 
sell back to the institution, and that the institution will repurchase, the 
underlying security at a specified price and at a fixed time in the future, 
usually not more than seven days from the date of purchase. While repurchase 
agreements involve certain risks not associated with direct investments in 
debt securities, including the risks of default or bankruptcy of the selling 
financial institution, the Fund follows procedures designed to minimize such 
risks. These procedures include effecting repurchase transactions only with 
large, well-capitalized and well-established financial institutions and 
maintaining adequate collateralization. 

   When-Issued and Delayed Delivery Securities and Forward Commitments. From 
time to time, in the ordinary course of business, the Fund may purchase 
securities on a when-issued or delayed delivery basis or may purchase or sell 
securities on a forward commitment basis. When such transactions are 
negotiated, the price is fixed at the time of the commitment, but delivery 
and payment can take place a month or more after the date of the commitment. 
There is no overall limit on the percentage of the Fund's assets which may be 
committed to the purchase of securities on a when-issued, delayed delivery, 
or forward commitment basis. An increase in the percentage of the Fund's 
assets committed to the purchase of securities on a when-issued, delayed 
delivery, or forward commitment basis may increase the volatility of the 
Fund's net asset value. 

   When, As and If Issued Securities. The Fund may purchase securities on a 
"when, as and if issued" basis under which the issuance of the security 
depends upon the occurrence of a subsequent event, such as approval of a 
merger, corporate reorganization, leveraged buyout or debt restructuring. If 
the anticipated event does not occur and the securities are not issued, the 
Fund will have lost an investment opportunity. There is no overall limit on 
the percentage of the Fund's assets which may be committed to the purchase of 
securities on a "when, as and if issued" basis. An increase in the percentage 
of the Fund's assets committed to the purchase of securities on a "when, as 
and if issued" basis may increase the volatility of its net asset value. 

   Lending of Portfolio Securities. Consistent with applicable regulatory 
requirements, the Fund may lend its portfolio securities to brokers, dealers 
and other financial institutions, provided that such loans are callable at 
any time by the Fund (subject to certain notice provisions described in the 
Statement of Additional Information), and are at all times secured by cash or 
cash equivalents, which are maintained in a segregated account pursuant to 
applicable regulations and that are at least equal to the market value, 
determined daily, of the loaned securities. 

   Except as specifically noted, all investment objectives, policies and 
practices discussed above are not fundamental policies of the Fund and, as 
such, may be changed without shareholder approval. 

PORTFOLIO MANAGEMENT 

   
   The Fund's portfolio is actively managed by its Investment Manager with a 
view to achieving the Fund's investment objective. In determining which 
securities to purchase for the Fund or hold in the Fund's portfolio, the 
Investment Manager will rely on information from various sources, including 
research, analysis and appraisals of brokers and dealers, including Dean 
Witter Reynolds Inc. ("DWR") and other broker-dealer affiliates of 
InterCapital and others regarding economic developments and interest rate 
trends, and the Investment Manager's own analysis of factors they deem 
relevant. The Fund's portfolio is managed within InterCapital's Growth Group, 
which manages 31 funds and fund portfolios, with approximately $13.5 billion 
in assets as of June 30, 1997. Ronald J. Worobel, Senior Vice President of 
InterCapital and a member of InterCapital's Growth Group, has been the 
primary portfolio manager since the Fund's inception and has been a portfolio 
manager at InterCapital for over five years. 
    

                                       11
<PAGE>

   Personnel of the Investment Manager have substantial experience in the use 
of the investment techniques described above under the heading "Options and 
Futures Transactions," which techniques require skills different from those 
needed to select the portfolio securities underlying various options and 
futures contracts. 

   
   Orders for transactions in portfolio securities and commodities may be 
placed for the Fund with a number of brokers and dealers, including DWR and 
other brokers and dealers that are affiliates of the Investment Manager. The 
Fund may incur brokerage commissions on transactions conducted through such 
affiliates. Pursuant to an order of the Securities and Exchange Commission, 
the Fund may effect principal transactions in certain money market 
instruments with DWR. 
    

   It is not anticipated that the Fund's portfolio turnover rate will exceed 
100% in any one year. Short-term gains and losses taxable at ordinary income 
rates may result from such portfolio transactions. See "Dividends, 
Distributions and Taxes" for a full discussion of the tax implications of the 
Fund's trading policy. A more extensive discussion of the Fund's portfolio 
brokerage policies is set forth in the Statement of Additional Information. 

   The expenses of the Fund relating to its portfolio management are likely 
to be greater than those incurred by other investment companies investing 
primarily in securities issued by domestic issuers as custodial costs, 
brokerage commissions and other transaction charges related to investing on 
foreign markets are generally higher than in the United States. 

RISK CONSIDERATIONS 

The net asset value of the Fund's shares will fluctuate with changes in the 
market value of its portfolio securities. Dividends payable by the Fund will 
vary in relation to the amount of income earned on portfolio securities. 

   Health Sciences Industry. Investors should consider that the assets of the 
Fund are subject to "industry risk" because investments will be concentrated 
in a particular group of related stocks. The concentration of investments in 
the health sciences industry may cause the value of the Fund's shares to 
fluctuate more widely than those funds investing in a greater variety of 
industries. The Investment Manager believes, however, that the Fund's 
concentration of investments in the health sciences industry also may provide 
it with the potential to achieve greater long-term performance than 
investments in a variety of industries. In addition, the health sciences 
industry generally is subject to substantial government regulation; 
accordingly, changes in government policies or regulation could have a 
material effect on the demand for products and services offered by health 
science companies, thereby affecting the performance of the Fund. In 
addition, the products and services offered by such companies may be subject 
to rapid obsolescence caused by technological and scientific advances. 

   While the Fund's portfolio normally will include securities of established 
suppliers of traditional products and services, the Fund may invest in 
smaller companies which can benefit from the development of new products and 
services. These smaller companies may present greater opportunities for 
capital appreciation, but may also involve greater risks, than large, 
established issuers. Such smaller companies may have limited product lines, 
markets or financial resources, and their securities may trade less 
frequently and in more limited volume than the securities of larger, more 
established companies. As a result, the prices of the securities of such 
smaller companies may fluctuate to a greater degree than the prices of the 
securities of other issuers. 

   Foreign Securities. Investors should carefully consider the risks of the 
Fund's investing in securities of foreign issuers and securities denominated 
in non-U.S. currencies. Fluctuations in the relative rates of exchange 
between the currencies of different nations will affect the value of the 
Fund's investments. Changes in foreign currency exchange rates relative to 
the U.S. dollar will affect the U.S. dollar value of the Fund's assets 
denominated in that currency and may thereby adversely impact upon the Fund's 
total return on such assets. 

                                       12
<PAGE>

   Foreign currency exchange rates are determined by forces of supply and 
demand on the foreign exchange markets. These forces are themselves affected 
by the international balance of payments and other economic and financial 
conditions, government intervention, speculation and other factors. Moreover, 
foreign currency exchange rates may be affected by the regulatory control of 
the exchanges on which the currencies trade. The foreign currency 
transactions of the Fund will be conducted on a spot basis or through forward 
contracts or futures contracts (see below). The Fund may incur certain costs 
in connection with these currency transactions. 

   Investments in foreign securities will also occasion risks relating to 
political and economic developments abroad, including the possibility of 
expropriations or confiscatory taxation, limitations on the use or transfer 
of Fund assets and any effects of foreign social, economic or political 
instability. Political and economic developments in Europe, especially as 
they relate to changes in the structure of the European Economic Community 
and the anticipated development of a unified common market, may have profound 
effects upon the value of a large segment of the Fund's portfolio. Continued 
progress in the evolution of, for example, a united European common market 
may be slowed by unanticipated political or social events and may, therefore, 
adversely affect the value of certain of the securities held in the Fund's 
portfolio. Foreign companies are not subject to the regulatory requirements 
of U.S. companies and, are subject to different risks relating to claims and 
litigation. Regulation of the health sciences industry in foreign countries 
is different from that in the U.S. and there are differences in environmental 
and securities regulation. There is less publicly available information about 
foreign companies as well. Moreover, foreign companies are not subject to 
uniform accounting, auditing and financial reporting standards and 
requirements comparable to those applicable to U.S. companies. 

   The price changes of securities of foreign issuers may be more volatile 
than comparable securities of U.S. issuers. Furthermore, foreign exchanges 
and broker-dealers are generally subject to less government and exchange 
scrutiny and regulation than their American counterparts. Brokerage 
commissions, dealer concessions and other transaction costs may be higher on 
foreign markets than in the U.S. In addition, differences in clearance and 
settlement procedures on foreign markets may occasion delays in settlements 
of Fund trades effected in such markets. Inability to dispose of portfolio 
securities due to settlement delays could result in losses to the Fund due to 
subsequent declines in value of such securities and the inability of the Fund 
to make intended security purchases due to settlement problems could result 
in a failure of the Fund to make potentially advantageous investments. 

   To hedge against adverse price movements in the securities held in its 
portfolio and the currencies in which they are denominated (as well as in the 
securities it might wish to purchase and their denominated currencies) the 
Fund may engage in transactions in forward foreign currency contracts, 
options on securities and currencies, and futures contracts and options on 
futures contracts on securities, currencies and indexes. The Fund may also 
purchase options on securities to facilitate its participation in the 
potential appreciation of the value of the underlying securities. A 
discussion of these transactions follows and is supplemented by further 
disclosure in the Statement of Additional Information. 

   Forward Foreign Currency Exchange Contracts. If the currency in which the 
Fund's portfolio securities (or anticipated portfolio securities) are 
denominated rises in value with respect to the currency which is being 
purchased (or sold), then the Fund will have realized fewer gains than had 
the Fund not entered into the forward contracts. Moreover, the precise 
matching of the forward contract amounts and the value of the securities 
involved will not generally be possible, since the future value of such 
securities in foreign currencies will change as a consequence of market 
movements in the value of those securities between the date the forward 
contract is entered into and the date it matures. The Fund is not required to 
enter into such transactions 

                                       13
<PAGE>

with regard to its foreign currency-denominated securities and will not do so 
unless deemed appropriate by the Investment Manager. 

   Options and Futures Transactions. The Fund may close out its position as 
writer of an option, or as a buyer or seller of a futures contract, only if a 
liquid secondary market exists for options or futures contracts of that 
series. There is no assurance that such a market will exist, particularly in 
the case of OTC options, as such options will generally only be closed out by 
entering into a closing purchase transaction with the purchasing dealer. 

   While the futures contracts and options transactions to be engaged in by 
the Fund for the purpose of hedging the Fund's portfolio securities are not 
speculative in nature, there are risks inherent in the use of such 
instruments. One such risk is that the Fund's management could be incorrect 
in its expectations as to the direction or extent of various interest rate or 
price movements or the time span within which the movements take place. For 
example, if the Fund sold futures contracts for the sale of securities in 
anticipation of an increase in interest rates, and then interest rates went 
down instead, causing bond prices to rise, the Fund would lose money on the 
sale. 

   Another risk which may arise in employing futures contracts to protect 
against the price volatility of portfolio securities is that the prices of 
securities, currencies and indices subject to futures contracts (and thereby 
the futures contract prices) may correlate imperfectly with the behavior of 
the U.S. dollar cash prices of the Fund's portfolio securities and their 
denominated currencies. Another such risk is that prices of interest rate 
futures contracts may not move in tandem with the changes in prevailing 
interest rates against which the Fund seeks a hedge. A correlation may also 
be distorted by the fact that the futures market is dominated by short-term 
traders seeking to profit from the difference between a contract or security 
price objective and their cost of borrowed funds. Such distortions are 
generally minor and would diminish as the contract approached maturity. 

   For additional risk disclosure, please refer to the "Investment Objective 
and Policies" section of the Prospectus and to the "Investment Practices and 
Policies" section in the Statement of Additional Information. 

INVESTMENT RESTRICTIONS 
- ----------------------------------------------------------------------------- 

   The investment restrictions listed below are among the restrictions which 
have been adopted by the Fund as fundamental policies. Under the Investment 
Company Act of 1940, as amended (the "Act"), a fundamental policy may not be 
changed without the vote of a majority of the outstanding voting securities 
of the Fund, as defined in the Act. For purposes of the following 
limitations: (i) all percentage limitations apply immediately after a 
purchase or initial investment, and (ii) any subsequent change in any 
applicable percentage resulting from market fluctuations or other changes in 
total or net assets does not require elimination of any security from the 
portfolio. 

   The Fund may not: 

     1. Invest 25% or more of the value of its total assets in securities of 
   issuers in any one industry, except the Fund will invest at least 25% of 
   the value of its total assets in the health sciences industry. 

     2. Invest more than 5% of the value of its total assets in securities of 
   issuers having a record, together with predecessors, of less than three 
   years of continuous operation. This restriction shall not apply to any 
   obligation issued or guaranteed by the United States Government, its 
   agencies or instrumentalities. 

     3. Purchase or sell commodities or commodities contracts except that the 
   Fund may purchase or write interest rate, currency and stock and bond 
   index futures contracts and related options thereon. 

     4. Pledge its assets or assign or otherwise encumber them except to 
   secure permitted 

                                       14
<PAGE>

   borrowings. (For the purpose of this restriction, collateral arrangements 
   with respect to the writing of options and collateral arrangements with 
   respect to initial or variation margin for futures are not deemed to be 
   pledges of assets.) 

     5. Purchase securities on margin (but the Fund may obtain short-term 
   loans as are necessary for the clearance of transactions). The deposit or 
   payment by the Fund of initial or variation margin in connection with 
   futures contracts or related options thereon is not considered the 
   purchase of a security on margin. 

   
   Notwithstanding any other investment policy or restriction, the Fund may 
seek to achieve its investment objective by investing all or substantially 
all of its assets in another investment company having substantially the same 
investment objective and policies as the Fund. 

PURCHASE OF FUND SHARES 
- ----------------------------------------------------------------------------- 

GENERAL 

   The Fund offers each Class of its shares for sale to the public on a 
continuous basis. Pursuant to a Distribution Agreement between the Fund and 
Dean Witter Distributors Inc. (the "Distributor"), an affiliate of the 
Investment Manager, shares of the Fund are distributed by the Distributor and 
offered by DWR and other dealers which have entered into Selected Dealers 
Agreements with the Distributor ("Selected Broker-Dealers"). The principal 
executive office of the Distributor is located at Two World Trade Center, New 
York, New York 10048. 

   The Fund offers four classes of shares (each, a "Class"). Class A shares 
are sold to investors with an initial sales charge that declines to zero for 
larger purchases; however, Class A shares sold without an initial sales 
charge are subject to a contingent deferred sales charge ("CDSC") of 1.0% if 
redeemed within one year of purchase, except for certain specific 
circumstances. Class B shares are sold without an initial sales charge but 
are subject to a CDSC (scaled down from 5.0% to 1.0%) payable upon most 
redemptions within six years after purchase. (Class B shares purchased by 
certain qualified employer-sponsored benefit plans are subject to a CDSC 
scaled down from 2.0% to 1.0% if redeemed within three years after purchase.) 
Class C shares are sold without an initial sales charge but are subject to a 
CDSC of 1.0% on most redemptions made within one year after purchase. Class D 
shares are sold without an initial sales charge or CDSC and are available 
only to investors meeting an initial investment minimum of $5 million, and to 
certain other limited categories of investors. At the discretion of the Board 
of Trustees of the Fund, Class A shares may be sold to categories of 
investors in addition to those set forth in this prospectus at net asset 
value without a front-end sales charge, and Class D shares may be sold to 
certain other categories of investors, in each case as may be described in 
the then current prospectus of the Fund. See "Alternative Purchase 
Arrangements--Selecting a Particular Class" for a discussion of factors to 
consider in selecting which Class of shares to purchase. 

   The minimum initial purchase is $1,000 for each Class of shares, although 
Class D shares are only available to persons investing $5 million or more and 
to certain other limited categories of investors. For the purpose of meeting 
the minimum $5 million initial investment for Class D shares, and subject to 
the $1,000 minimum initial investment for each Class of the Fund, an 
investor's existing holdings of Class A shares of the Fund and other Dean 
Witter Funds that are multiple class funds ("Dean Witter Multi-Class Funds") 
and shares of Dean Witter Funds sold with a front-end sales charge ("FSC 
Funds") and concurrent investments in Class D shares of the Fund and other 
Dean Witter Multi-Class Funds will be aggregated. Subsequent purchases of 
$100 or more may be made by sending a check, payable to Dean Witter Health 
Sciences Trust, directly to Dean Witter Trust Company (the "Transfer Agent") 
at P.O. Box 1040, Jersey City, NJ 07303 or by contacting an account executive 
of DWR or other Selected Broker-Dealer. When purchas- 
    
                                       15
<PAGE>

   
ing shares of the Fund, investors must specify whether the purchase is for 
Class A, Class B, Class C or Class D shares. If no Class is specified, the 
Transfer Agent will not process the transaction until the proper Class is 
identified. The minimum initial purchase in the case of investments through 
EasyInvest(Service Mark), an automatic purchase plan (see "Shareholder 
Services"), is $100, provided that the schedule of automatic investments will 
result in investments totalling at least $1,000 within the first twelve 
months. In the case of investments made pursuant to Systematic Payroll 
Deduction Plans (including Individual Retirement Plans), the Fund, in its 
discretion, may accept purchases without regard to any minimum amounts which 
would otherwise be required if the Fund has reason to believe that additional 
purchases will increase the purchase of shares in all accounts under such 
Plans to at least $1,000. Certificates for shares purchased will not be 
issued unless a request is made by the shareholder in writing to the Transfer 
Agent. 

   Shares of the Fund are sold through the Distributor on a normal three 
business day settlement basis; that is, payment is due on the third business 
day (settlement date) after the order is placed with the Distributor. Since 
DWR and other Selected Broker-Dealers forward investors' funds on settlement 
date, they will benefit from the temporary use of the funds if payment is 
made prior thereto. As noted above, orders placed directly with the Transfer 
Agent must be accompanied by payment. Investors will be entitled to receive 
income dividends and capital gains distributions if their order is received 
by the close of business on the day prior to the record date for such 
dividends and distributions. Sales personnel of a Selected Broker-Dealer are 
compensated for selling shares of the Fund by the Distributor and/or the 
Selected Broker-Dealer or any of its affiliates. In addition, some sales 
personnel of the Selected Broker-Dealer will receive non-cash compensation as 
special sales incentives, including trips, educational and/or business 
seminars and merchandise. The Fund and the Distributor reserve the right to 
reject any purchase orders. 

ALTERNATIVE PURCHASE ARRANGEMENTS 

   The Fund offers several Classes of shares to investors designed to provide 
them with the flexibility of selecting an investment best suited to their 
needs. The general public is offered three Classes of shares: Class A shares, 
Class B shares and Class C shares, which differ principally in terms of sales 
charges and rate of expenses to which they are subject. A fourth Class of 
shares, Class D shares, is offered only to limited categories of investors 
(see "No Load Alternative--Class D Shares" below). 

   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 except that Class 
A, Class B and Class C shares bear the expenses of the ongoing shareholder 
service fees, Class B and Class C shares bear the expenses of the ongoing 
distribution fees and Class A, Class B and Class C shares which are redeemed 
subject to a CDSC bear the expense of the additional incremental distribution 
costs resulting from the CDSC applicable to shares of those Classes. The 
ongoing distribution fees that are imposed on Class A, Class B and Class C 
shares will be imposed directly against those Classes and not against all 
assets of the Fund and, accordingly, such charges against one Class will not 
affect the net asset value of any other Class or have any impact on investors 
choosing another sales charge option. See "Plan of Distribution" and 
"Redemptions and Repurchases." 

   Set forth below is a summary of the differences between the Classes and 
the factors an investor should consider when selecting a particular Class. 
This summary is qualified in its entirety by detailed discussion of each 
Class that follows this summary. 

   Class A Shares. Class A shares are sold at net asset value plus an initial 
sales charge of up to 5.25%. The initial sales charge is reduced for certain 
purchases. Investments of $1 million or more (and investments by certain 
other limited categories of investors) are not subject to any sales charges 
at the time of purchase but are subject to a CDSC of 1.0% on redemptions made 
within one year after purchase, except for certain specific circumstances. 
Class A shares are also subject to a 12b-1 fee of up to 0.25% of the average 
daily net assets of the Class. See "Initial Sales Charge Alternative--Class A 
Shares." 
    
                                       16
<PAGE>

   
   Class B Shares. Class B shares are offered at net asset value with no 
initial sales charge but are subject to a CDSC (scaled down from 5.0% to 
1.0%) if redeemed within six years of purchase. (Class B shares purchased by 
certain qualified employer-sponsored benefit plans are subject to a CDSC 
scaled down from 2.0% to 1.0% if redeemed within three years after purchase.) 
This CDSC may be waived for certain redemptions. Class B shares are also 
subject to an annual 12b-1 fee of 1.0% of the lesser of: (a) the average 
daily aggregate gross sales of the Fund's Class B shares since the inception 
of the Fund (not including reinvestments of dividends or capital gains 
distributions), less the average daily aggregate net asset value of the 
Fund's Class B shares redeemed since the Fund's inception upon which a CDSC 
has been imposed or waived, or (b) the average daily net assets of Class B. 
The Class B shares' distribution fee will cause that Class to have higher 
expenses and pay lower dividends than Class A or Class D shares. 

   After approximately ten (10) years, Class B shares will convert 
automatically to Class A shares of the Fund, based on the relative net asset 
values of the shares of the two Classes on the conversion date. In addition, 
a certain portion of Class B shares that have been acquired through the 
reinvestment of dividends and distributions will be converted at that time. 
See "Contingent Deferred Sales Charge Alternative--Class B Shares." 

   Class C Shares. Class C shares are sold at net asset value with no initial 
sales charge but are subject to a CDSC of 1.0% on redemptions made within one 
year after purchase. This CDSC may be waived for certain redemptions. They 
are subject to an annual 12b-1 fee of up to 1.0% of the average daily net 
assets of the Class C shares. The Class C shares' distribution fee may cause 
that Class to have higher expenses and pay lower dividends than Class A or 
Class D shares. See "Level Load Alternative--Class C Shares." 

   Class D Shares. Class D shares are available only to limited categories of 
investors (see "No Load Alternative--Class D Shares" below). Class D shares 
are sold at net asset value with no initial sales charge or CDSC. They are 
not subject to any 12b-1 fees. See "No Load Alternative--Class D Shares." 

   Selecting a Particular Class. In deciding which Class of Fund shares to 
purchase, investors should consider the following factors, as well as any 
other relevant facts and circumstances: 

   The decision as to which Class of shares is more beneficial to an investor 
depends on the amount and intended length of his or her investment. Investors 
who prefer an initial sales charge alternative may elect to purchase Class A 
shares. Investors qualifying for significantly reduced or, in the case of 
purchases of $1 million or more, no initial sales charges may find Class A 
shares particularly attractive because similar sales charge reductions are 
not available with respect to Class B or Class C shares. Moreover, Class A 
shares are subject to lower ongoing expenses than are Class B or Class C 
shares over the term of the investment. As an alternative, Class B and Class 
C shares are sold without any initial sales charge so the entire purchase 
price is immediately invested in the Fund. Any investment return on these 
additional investment amounts may partially or wholly offset the higher 
annual expenses of these Classes. Because the Fund's future return cannot be 
predicted, however, there can be no assurance that this would be the case. 

   Finally, investors should consider the effect of the CDSC period and any 
conversion rights of the Classes in the context of their own investment time 
frame. For example, although Class C shares are subject to a significantly 
lower CDSC upon redemptions, they do not, unlike Class B shares, convert into 
Class A shares after approximately ten years, and, therefore, are subject to 
an ongoing 12b-1 fee of 1.0% (rather than the 0.25% fee applicable to Class A 
shares) for an indefinite period of time. Thus, Class B shares may be more 
attractive than Class C shares to investors with longer term investment 
outlooks. Other investors, however, may elect to purchase Class C shares if, 
for example, they 
    
                                       17
<PAGE>

   
determine that they do not wish to be subject to a front-end sales charge and 
they are uncertain as to the length of time they intend to hold their shares. 

   For the purpose of meeting the $5 million minimum investment amount for 
Class D shares, holdings of Class A shares in all Dean Witter Multi-Class 
Funds, shares of FSC Funds and shares of Dean Witter Funds for which such 
shares have been exchanged will be included together with the current 
investment amount. 

   Sales personnel may receive different compensation for selling each Class 
of shares. Investors should understand that the purpose of a CDSC is the same 
as that of the initial sales charge in that the sales charges applicable to 
each Class provide for the financing of the distribution of shares of that 
Class. 

   Set forth below is a chart comparing the sales charge, 12b-1 fees and 
conversion options applicable to each Class of shares: 
    

   
<TABLE>
<CAPTION>
                                                           CONVERSION 
   CLASS          SALES CHARGE           12B-1 FEE          FEATURE 
- -------------------------------------------------------------------------------
<S>          <C>                           <C>              <C>
     A       Maximum 5.25%                 0.25%            No 
             initial sales charge 
             reduced for purchases 
             of $25,000 and over; 
             shares sold without 
             an initial sales charge 
             generally subject to 
             a 1.0% CDSC during 
             first year.   
- -------------------------------------------------------------------------------
     B       Maximum 5.0%                  1.0%             B shares convert 
             CDSC during the first                          to A shares 
             year decreasing                                automatically 
             to 0 after six years                           after approximately 
                                                            ten years 
- -------------------------------------------------------------------------------
     C       1.0% CDSC during              1.0%             No
             first year      
- -------------------------------------------------------------------------------
     D       None                          None             No 
- -------------------------------------------------------------------------------
</TABLE>
    

   
   See "Purchase of Fund Shares" and "The Fund and its Management" for a 
complete description of the sales charges and service and distribution fees 
for each Class of shares and "Determination of Net Asset Value," "Dividends, 
Distributions and Taxes" and "Shareholder Services--Exchange Privilege" for 
other differences between the Classes of shares. 

INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES 

   Class A shares are sold at net asset value plus an initial sales charge. 
In some cases, reduced sales charges may be available, as described below. 
Investments of $1 million or more (and investments by certain other limited 
categories of investors) are not subject to any sales charges at the time of 
purchase but are subject to a CDSC of 1.0% on redemptions made within one 
year after purchase (calculated from the last day of the month in which the 
shares were purchased), except for certain specific circumstances. The CDSC 
will be assessed on an amount equal to the lesser of the current market value 
or the cost of the shares being redeemed. The CDSC will not be imposed (i) in 
the circumstances set forth below in the section "Contingent Deferred Sales 
Charge Alternative--Class B Shares--CDSC Waivers," except that the references 
to six years in the first paragraph of that section shall mean one year in 
the case of Class A shares, and (ii) in the circumstances identified in the 
section "Additional Net Asset Value Purchase Options" below. Class A shares 
are also subject to an annual 12b-1 fee of up to 0.25% of the average daily 
net assets of the Class. 

   The offering price of Class A shares will be the net asset value per share 
next determined following receipt of an order (see "Determination of Net 
Asset Value" below), plus a sales charge (expressed as a percentage of the 
offering price) on a single transaction as shown in the following table: 
    
<PAGE>
   
<TABLE>
<CAPTION>
                              SALES CHARGE 
                     ------------------------------- 
                      PERCENTAGE OF    APPROXIMATE 
 AMOUNT OF SINGLE    PUBLIC OFFERING  PERCENTAGE OF 
    TRANSACTION           PRICE      AMOUNT INVESTED 
    -----------           -----      --------------- 
<S>                        <C>             <C>
Less than $25,000  ..      5.25%           5.54% 
$25,000 but less 
  than $50,000 ......      4.75%           4.99% 
$50,000 but less 
  than $100,000 .....      4.00%           4.17% 
$100,000 but less 
  than $250,000 .....      3.00%           3.09% 
$250,000 but less 
  than $1 million  ..      2.00%           2.04% 
$1 million and over           0               0 
</TABLE>
    

   
   Upon notice to all Selected Broker-Dealers, the Distributor may reallow up 
to the full applicable 
    

                                       18
<PAGE>

   
sales charge as shown in the above schedule during periods specified in such 
notice. During periods when 90% or more of the sales charge is reallowed, 
such Selected Broker-Dealers may be deemed to be underwriters as that term is 
defined in the Securities Act of 1933. 

   The above schedule of sales charges is applicable to purchases in a single 
transaction by, among others: (a) an individual; (b) an individual, his or 
her spouse and their children under the age of 21 purchasing shares for his, 
her or their own accounts; (c) a trustee or other fiduciary purchasing shares 
for a single trust estate or a single fiduciary account; (d) a pension, 
profit-sharing or other employee benefit plan qualified or non-qualified 
under Section 401 of the Internal Revenue Code; (e) tax-exempt organizations 
enumerated in Section 501(c)(3) or (13) of the Internal Revenue Code; (f) 
employee benefit plans qualified under Section 401 of the Internal Revenue 
Code of a single employer or of employers who are "affiliated persons" of 
each other within the meaning of Section 2(a)(3)(c) of the Act; and for 
investments in Individual Retirement Accounts of employees of a single 
employer through Systematic Payroll Deduction plans; or (g) any other 
organized group of persons, whether incorporated or not, provided the 
organization has been in existence for at least six months and has some 
purpose other than the purchase of redeemable securities of a registered 
investment company at a discount. 

   Combined Purchase Privilege. Investors may have the benefit of reduced 
sales charges in accordance with the above schedule by combining purchases of 
Class A shares of the Fund in single transactions with the purchase of Class 
A shares of other Dean Witter Multi-Class Funds and shares of FSC Funds. The 
sales charge payable on the purchase of the Class A shares of the Fund, the 
Class A shares of the other Dean Witter Multi-Class Funds and the shares of 
the FSC Funds will be at their respective rates applicable to the total 
amount of the combined concurrent purchases of such shares. 

   Right of Accumulation. The above persons and entities may benefit from a 
reduction of the sales charges in accordance with the above schedule if the 
cumulative net asset value of Class A shares purchased in a single 
transaction, together with shares of the Fund and other Dean Witter Funds 
previously purchased at a price including a front-end sales charge (including 
shares of the Fund and other Dean Witter Funds acquired in exchange for those 
shares, and including in each case shares acquired through reinvestment of 
dividends and distributions), which are held at the time of such transaction, 
amounts to $25,000 or more. If such investor has a cumulative net asset value 
of shares of FSC Funds and Class A and Class D shares equal to at least $5 
million, such investor is eligible to purchase Class D shares subject to the 
$1,000 minimum initial investment requirement of that Class of the Fund. See 
"No Load Alternative--Class D Shares" below. 

   The Distributor must be notified by DWR or a Selected Broker-Dealer or the 
shareholder at the time a purchase order is placed that the purchase 
qualifies for the reduced charge under the Right of Accumulation. Similar 
notification must be made in writing by the dealer or shareholder when such 
an order is placed by mail. The reduced sales charge will not be granted if: 
(a) such notification is not furnished at the time of the order; or (b) a 
review of the records of the Selected Broker-Dealer or the Transfer Agent 
fails to confirm the investor's represented holdings. 

   Letter of Intent. The foregoing schedule of reduced sales charges will 
also be available to investors who enter into a written Letter of Intent 
providing for the purchase, within a thirteen-month period, of Class A shares 
of the Fund from DWR or other Selected Broker-Dealers. The cost of Class A 
shares of the Fund or shares of other Dean Witter Funds which were previously 
purchased at a price including a front-end sales charge during the 90-day 
period prior to the date of receipt by the Distributor of the Letter of 
Intent, or of Class A shares of the Fund or shares of other Dean Witter Funds 
acquired in exchange for shares of such funds purchased during such period at 
a price including a front-end sales charge, which are still owned by the 
shareholder, may also be included in determining the applicable reduction. 
    
                                       19
<PAGE>

   
   Additional Net Asset Value Purchase Options. In addition to investments of 
$1 million or more, Class A shares also may be purchased at net asset value 
by the following: 

   (1) trusts for which Dean Witter Trust Company ("DWTC") or Dean Witter 
Trust FSB ("DWTFSB") (each of which is an affiliate of the Investment 
Manager) provides discretionary trustee services; 

   (2) persons participating in a fee-based program approved by the 
Distributor, pursuant to which such persons pay an asset based fee for 
services in the nature of investment advisory or administrative services 
(such investments are subject to all of the terms and conditions of such 
programs, which may include termination fees and restrictions on 
transferability of Fund shares); 

   (3) retirement plans qualified under Section 401(k) of the Internal 
Revenue Code ("401(k) plans") and other employer-sponsored plans qualified 
under Section 401(a) of the Internal Revenue Code with at least 200 eligible 
employees and for which DWTC or DWTFSB serves as Trustee or the 401(k) 
Support Services Group of DWR serves as recordkeeper; 

   (4) 401(k) plans and other employer-sponsored plans qualified under 
Section 401(a) of the Internal Revenue Code for which DWTC or DWTFSB serves 
as Trustee or the 401(k) Support Services Group of DWR serves as recordkeeper 
whose Class B shares have converted to Class A shares, regardless of the 
plan's asset size or number of eligible employees; 

   (5) investors who are clients of a Dean Witter account executive who 
joined Dean Witter from another investment firm within six months prior to 
the date of purchase of Fund shares by such investors, if the shares are 
being purchased with the proceeds from a redemption of shares of an open-end 
proprietary mutual fund of the account executive's previous firm which 
imposed either a front-end or deferred sales charge, provided such purchase 
was made within sixty days after the redemption and the proceeds of the 
redemption had been maintained in the interim in cash or a money market fund; 
and 

   (6) other categories of investors, at the discretion of the Board, as 
disclosed in the then current prospectus of the Fund. 

   No CDSC will be imposed on redemptions of shares purchased pursuant to 
paragraphs (1), (2) or (5), above. 

   For further information concerning purchases of the Fund's shares, contact 
DWR or another Se-lected Broker-Dealer or consult the Statement of Additional 
Information. 

CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE--CLASS B SHARES 

   Class B shares are sold at net asset value next determined without an 
initial sales charge so that the full amount of an investor's purchase 
payment may be immediately invested in the Fund. A CDSC, however, will be 
imposed on most Class B shares redeemed within six years after purchase. The 
CDSC will be imposed on any redemption of shares if after such redemption the 
aggregate current value of a Class B account with the Fund falls below the 
aggregate amount of the investor's purchase payments for Class B shares made 
during the six years (or, in the case of shares held by certain 
employer-sponsored benefit plans, three years) preceding the redemption. In 
addition, Class B shares are subject to an annual 12b-1 fee of 1.0% of the 
lesser of: (a) the average daily aggregate gross sales of the Fund's Class B 
shares since the inception of the Fund (not including reinvestments of 
dividends or capital gains distributions), less the average daily aggregate 
net asset value of the Fund's Class B shares redeemed since the Fund's 
inception upon which a CDSC has been imposed or waived, or (b) the average 
daily net assets of Class B. 

   Except as noted below, Class B shares of the Fund which are held for six 
years or more after purchase (calculated from the last day of the month in 
which the shares were purchased) will not be subject to any CDSC upon 
redemption. Shares redeemed earlier than six years after purchase may, 
however, be subject to a CDSC which will be a percentage of the dollar amount 
of shares re- 
    
                                       20
<PAGE>

   
deemed and will be assessed on an amount equal to the lesser of the current 
market value or the cost of the shares being redeemed. The size of this 
percentage will depend upon how long the shares have been held, as set forth 
in the following table: 
    

   
<TABLE>
<CAPTION>
         YEAR SINCE 
          PURCHASE            CDSC AS A PERCENTAGE 
        PAYMENT MADE           OF AMOUNT REDEEMED 
        ------------           ------------------ 
<S>                                   <C>
First......................           5.0% 
Second.....................           4.0% 
Third......................           3.0% 
Fourth.....................           2.0% 
Fifth......................           2.0% 
Sixth......................           1.0% 
Seventh and thereafter ....           None 
</TABLE>
    

   
   In the case of Class B shares of the Fund held by 401 (k) plans or other 
employer-sponsored plans qualified under Section 401(a) of the Internal 
Revenue Code for which DWTC or DWTFSB serves as Trustee or the 401(k) Support 
Services Group of DWR serves as recordkeeper and whose accounts are opened on 
or after July 28, 1997, shares held for three years or more after purchase 
(calculated as described in the paragraph above) will not be subject to any 
CDSC upon redemption. However, shares redeemed earlier than three years after 
purchase may be subject to a CDSC (calculated as described in the paragraph 
above), the percentage of which will depend on how long the shares have been 
held, as set forth in the following table: 
    

   
<TABLE>
<CAPTION>
         YEAR SINCE 
          PURCHASE            CDSC AS A PERCENTAGE 
        PAYMENT MADE           OF AMOUNT REDEEMED 
        ------------           ------------------ 
<S>                                   <C>
First .....................           2.0% 
Second ....................           2.0% 
Third .....................           1.0% 
Fourth and thereafter  ....           None 
</TABLE>
    

   
   CDSC Waivers. A CDSC will not be imposed on: (i) any amount which 
represents an increase in value of shares purchased within the six years (or, 
in the case of shares held by certain employer-sponsored benefit plans, three 
years) preceding the redemption; (ii) the current net asset value of shares 
purchased more than six years (or, in the case of shares held by certain 
employer-sponsored benefit plans, three years) prior to the redemption; and 
(iii) the current net asset value of shares purchased through reinvestment of 
dividends or distributions and/or shares acquired in exchange for shares of 
FSC Funds or of other Dean Witter Funds acquired in exchange for such shares. 
Moreover, in determining whether a CDSC is applicable it will be assumed that 
amounts described in (i), (ii) and (iii) above (in that order) are redeemed 
first. 

   In addition, the CDSC, if otherwise applicable, will be waived in the case 
of: 

   (1) redemptions of shares held at the time a shareholder dies or becomes 
disabled, only if the shares are:   (A) registered either in the name of an 
individual shareholder (not a trust), or in the names of such shareholder and 
his or her spouse as joint tenants with right of survivorship; or   (B) held 
in a qualified corporate or self-employed retirement plan, Individual 
Retirement Account ("IRA") or Custodial Account under Section 403(b)(7) of 
the Internal Revenue Code ("403(b) Custodial Account"), provided in either 
case that the redemption is requested within one year of the death or initial 
determination of disability; 

   (2) redemptions in connection with the following retirement plan 
distributions: (A) lump-sum or other distributions from a qualified corporate
or self-employed retirement plan following retirement (or, in the case of a
"key employee" of a "top heavy" plan, following attainment of age 59 1/2); (B)
distributions from an IRA or 403(b) Custodial Account following attainment of
age 59 1/2; or (C) a tax-free return of an excess contribution to an IRA; and

   (3) all redemptions of shares held for the benefit of a participant in a 
401(k) plan or other employer-sponsored plan qualified under Section 401(a) 
of the Internal Revenue Code which offers investment companies managed by the 
Investment Manager or its subsidiary, Dean Witter Services Company Inc., as 
self-directed investment alternatives and for which DWTC or DWTFSB serves as 
Trustee or the 401(k) 
    
                                       21
<PAGE>

   
Support Services Group of DWR serves as recordkeeper ("Eligible Plan"), 
provided that either: (A) the plan continues to be an Eligible Plan after the 
redemption; or (B) the redemption is in connection with the complete 
termination of the plan involving the distribution of all plan assets to 
participants. 

   With reference to (1) above, for the purpose of determining disability, 
the Distributor utilizes the definition of disability contained in Section 
72(m)(7) of the Internal Revenue Code, which relates to the inability to 
engage in gainful employment. With reference to (2) above, the term 
"distribution" does not encompass a direct transfer of IRA, 403(b) Custodial 
Account or retirement plan assets to a successor custodian or trustee. All 
waivers will be granted only following receipt by the Distributor of 
confirmation of the shareholder's entitlement. 

   Conversion to Class A Shares. All shares of the Fund held prior to July 
28, 1997 have been designated Class B shares. Shares held before May 1, 1997 
will convert to Class A shares in May, 2007. In all other instances Class B 
shares will convert automatically to Class A shares, based on the relative 
net asset values of the shares of the two Classes on the conversion date, 
which will be approximately ten (10) years after the date of the original 
purchase. The ten year period is calculated from the last day of the month in 
which the shares were purchased or, in the case of Class B shares acquired 
through an exchange or a series of exchanges, from the last day of the month 
in which the original Class B shares were purchased, provided that shares 
originally purchased before May 1, 1997 will convert to Class A shares in 
May, 2007. The conversion of shares purchased on or after May 1, 1997 will 
take place in the month following the tenth anniversary of the purchase. 
There will also be converted at that time such proportion of Class B shares 
acquired through automatic reinvestment of dividends and distributions owned 
by the shareholder as the total number of his or her Class B shares 
converting at the time bears to the total number of outstanding Class B 
shares purchased and owned by the shareholder. In the case of Class B shares 
held by a 401(k) plan or other employer-sponsored plan qualified under 
Section 401(a) of the Internal Revenue Code and for which DWTC or DWTFSB 
serves as Trustee or the 401(k) Support Services Group of DWR serves as 
recordkeeper, the plan is treated as a single investor and all Class B shares 
will convert to Class A shares on the conversion date of the first shares of 
a Dean Witter Multi-Class Fund purchased by that plan. In the case of Class B 
shares previously exchanged for shares of an "Exchange Fund" (see 
"Shareholder Services--Exchange Privilege"), the period of time the shares 
were held in the Exchange Fund (calculated from the last day of the month in 
which the Exchange Fund shares were acquired) is excluded from the holding 
period for conversion. If those shares are subsequently re-exchanged for 
Class B shares of a Dean Witter Multi-Class Fund, the holding period resumes 
on the last day of the month in which Class B shares are reacquired. 

   If a shareholder has received share certificates for Class B shares, such 
certificates must be delivered to the Transfer Agent at least one week prior 
to the date for conversion. Class B shares evidenced by share certificates 
that are not received by the Transfer Agent at least one week prior to any 
conversion date will be converted into Class A shares on the next scheduled 
conversion date after such certificates are received. 

   Effectiveness of the conversion feature is subject to the continuing 
availability of a ruling of the Internal Revenue Service or an opinion of 
counsel that (i) the conversion of shares does not constitute a taxable event 
under the Internal Revenue Code, (ii) Class A shares received on conversion 
will have a basis equal to the shareholder's basis in the converted Class B 
shares immediately prior to the conversion, and (iii) Class A shares received 
on conversion will have a holding period that includes the holding period of 
the converted Class B shares. The conversion feature may be suspended if the 
ruling or opinion is no longer available. In such event, Class B shares would 
continue to be subject to Class B 12b-1 fees. 

   Class B shares purchased before July 28, 1997 by trusts for which DWTC or 
DWTFSB provides 
    
                                       22
<PAGE>

   
discretionary trustee services will convert to Class A shares on or about 
August 29, 1997. The CDSC will not be applicable to such shares. 

LEVEL LOAD ALTERNATIVE--CLASS C SHARES 

   Class C shares are sold at net asset value next determined without an 
initial sales charge but are subject to a CDSC of 1.0% on most redemptions 
made within one year after purchase (calculated from the last day of the 
month in which the shares were purchased). The CDSC will be assessed on an 
amount equal to the lesser of the current market value or the cost of the 
shares being redeemed. The CDSC will not be imposed in the circumstances set 
forth above in the section "Contingent Deferred Sales Charge 
Alternative--Class B Shares--CDSC Waivers," except that the references to six 
years in the first paragraph of that section shall mean one year in the case 
of Class C shares. Class C shares are subject to an annual 12b-1 fee of up to 
1.0% of the average daily net assets of the Class. Unlike Class B shares, 
Class C shares have no conversion feature and, accordingly, an investor that 
purchases Class C shares will be subject to 12b-1 fees applicable to Class C 
shares for an indefinite period subject to annual approval by the Fund's 
Board of Trustees and regulatory limitations. 

NO LOAD ALTERNATIVE--CLASS D SHARES 

   Class D shares are offered without any sales charge on purchase or 
redemption and without any 12b-1 fee. Class D shares are offered only to 
investors meeting an initial investment minimum of $5 million and the 
following categories of investors: (i) investors participating in the 
InterCapital mutual fund asset allocation program pursuant to which such 
persons pay an asset based fee; (ii) persons participating in a fee-based 
program approved by the Distributor, pursuant to which such persons pay an 
asset based fee for services in the nature of investment advisory or 
administrative services (subject to all of the terms and conditions of such 
programs, which may include termination fees and restrictions on 
transferability of Fund shares); (iii) 401(k) plans established by DWR and 
SPS Transaction Services, Inc. (an affiliate of DWR) for their employees; 
(iv) certain Unit Investment Trusts sponsored by DWR; (v) certain other 
open-end investment companies whose shares are distributed by the 
Distributor; and (vi) other categories of investors, at the discretion of the 
Board, as disclosed in the then current prospectus of the Fund. Investors who 
require a $5 million minimum initial investment to qualify to purchase Class 
D shares may satisfy that requirement by investing that amount in a single 
transaction in Class D shares of the Fund and other Dean Witter Multi-Class 
Funds, subject to the $1,000 minimum initial investment required for that 
Class of the Fund. In addition, for the purpose of meeting the $5 million 
minimum investment amount, holdings of Class A shares in all Dean Witter 
Multi-Class Funds, shares of FSC Funds and shares of Dean Witter Funds for 
which such shares have been exchanged will be included together with the 
current investment amount. If a shareholder redeems Class A shares and 
purchases Class D shares, such redemption may be a taxable event. 

PLAN OF DISTRIBUTION 

   The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under 
the Act with respect to the distribution of Class A, Class B and Class C 
shares of the Fund. In the case of Class A and Class C shares, the Plan 
provides that the Fund will reimburse the Distributor and others for the 
expenses of certain activities and services incurred by them specifically on 
behalf of those shares. Reimbursements for these expenses will be made in 
monthly payments by the Fund to the Distributor, which will in no event 
exceed amounts equal to payments at the annual rates of 0.25% and 1.0% of the 
average daily net assets of Class A and Class C, respectively. In the case of 
Class B shares, the Plan provides that the Fund will pay the Distributor a 
fee, which is accrued daily and paid monthly, at the annual rate of 1.0% of 
the lesser of: (a) the average daily aggregate gross sales of the Fund's 
Class B shares since the inception of the Fund (not including reinvestments 
of dividends or capital gains distributions), less the average daily 
aggregate net asset value of the Fund's Class B shares redeemed since 
    
                                       23
<PAGE>

   
the Fund's inception upon which a CDSC has been imposed or waived, or (b) the 
average daily net assets of Class B. The fee is treated by the Fund as an 
expense in the year it is accrued. In the case of Class A shares, the entire 
amount of the fee currently represents a service fee within the meaning of 
the NASD guidelines. In the case of Class B and Class C shares, a portion of 
the fee payable pursuant to the Plan, equal to 0.25% of the average daily net 
assets of each of these Classes, is currently characterized as a service fee. 
A service fee is a payment made for personal service and/or the maintenance 
of shareholder accounts. 

   Additional amounts paid under the Plan in the case of Class B and Class C 
shares are paid to the Distributor for services provided and the expenses 
borne by the Distributor and others in the distribution of the shares of 
those Classes, including the payment of commissions for sales of the shares 
of those Classes and incentive compensation to and expenses of DWR's account 
executives and others who engage in or support distribution of shares or who 
service shareholder accounts, including overhead and telephone expenses; 
printing and distribution of prospectuses and reports used in connection with 
the offering of the Fund's shares to other than current shareholders; and 
preparation, printing and distribution of sales literature and advertising 
materials. In addition, the Distributor may utilize fees paid pursuant to the 
Plan in the case of Class B shares to compensate DWR and other Selected 
Broker-Dealers for their opportunity costs in advancing such amounts, which 
compensation would be in the form of a carrying charge on any unreimbursed 
expenses. 

   For the fiscal year ended July 31, 1996, Class B shares of the Fund 
accrued payments under the Plan amounting to $3,864,860, which amount is 
equal to 1.0% of the Fund's average daily net assets for the fiscal year. The 
payments accrued under the Plan were calculated pursuant to clause (b) of the 
compensation formula under the Plan. All shares held prior to July 28, 1997 
have been designated Class B shares. 

   In the case of Class B shares, at any given time, the expenses in 
distributing Class B shares of the Fund may be in excess of the total of (i) 
the payments made by the Fund pursuant to the Plan, and (ii) the proceeds of 
CDSCs paid by investors upon the redemption of Class B shares. For example, 
if $1 million in expenses in distributing Class B shares of the Fund had been 
incurred and $750,000 had been received as described in (i) and (ii) above, 
the excess expense would amount to $250,000. The Distributor has advised the 
Fund that such excess amounts, including the carrying charge described above, 
totalled $16,178,097 at July 31, 1996, which was equal to 3.66% of the net 
assets of the Fund on such date. Because there is no requirement under the 
Plan that the Distributor be reimbursed for all distribution expenses or any 
requirement that the Plan be continued from year to year, such excess amount 
does not constitute a liability of the Fund. Although there is no legal 
obligation for the Fund to pay expenses incurred in excess of payments made 
to the Distributor under the Plan, and the proceeds of CDSCs paid by 
investors upon redemption of shares, if for any reason the Plan is terminated 
the Trustees will consider at that time the manner in which to treat such 
expenses. Any cumulative expenses incurred, but not yet recovered through 
distribution fees or CDSCs, may or may not be recovered through future 
distribution fees or CDSCs. 

   In the case of Class A and Class C shares, expenses incurred pursuant to 
the Plan in any calendar year in excess of 0.25% or 1.0% of the average daily 
net assets of Class A or Class C, respectively, will not be reimbursed by the 
Fund through payments in any subsequent year, except that expenses 
representing a gross sales commission credited to account executives at the 
time of sale may be reimbursed in the subsequent calendar year. No interest 
or other financing charges will be incurred on any Class A or Class C 
distribution expenses incurred by the Distributor under the Plan or on any 
unreimbursed expenses due to the Distributor pursuant to the Plan. 
    
                                       24
<PAGE>

   
DETERMINATION OF NET ASSET VALUE 

   The net asset value per share is determined once daily at 4:00 p.m., New 
York time (or, on days when the New York Stock Exchange closes prior to 4:00 
p.m., at such earlier time), on each day that the New York Stock Exchange is 
open by taking the net assets of the Fund, dividing by the number of shares 
outstanding and adjusting to the nearest cent. The assets belonging to the 
Class A, Class B, Class C and Class D shares will be invested together in a 
single portfolio. The net asset value of each Class, however, will be 
determined separately by subtracting each Class's accrued expenses and 
liabilities. The net asset value per share will not be determined on Good 
Friday and on such other federal and non-federal holidays as are observed by 
the New York Stock Exchange. 

   In the calculation of the Fund's net asset value: (1) an equity portfolio 
security listed or traded on the New York or American Stock Exchange or other 
domestic or foreign stock exchange is valued at its latest sale price on that 
exchange or quotation service prior to the time when assets are valued; if 
there were no sales that day, the security is valued at the latest bid price 
(in cases where securities are traded on more than one exchange, the 
securities are valued on the exchange designated as the primary market 
pursuant to procedures adopted by the Trustees); and (2) all other portfolio 
securities for which over-the-counter market quotations are readily available 
are valued at the latest available bid price prior to the time of valuation. 
When market quotations are not readily available, including circumstances 
under which it is determined by the Investment Manager that sale or bid 
prices are not reflective of a security's market value, portfolio securities 
are valued at their fair value as determined in good faith under procedures 
established by and under the general supervision of the Fund's Trustees. For 
valuation purposes, quotations of foreign portfolio securities, other assets 
and liabilities and forward contracts stated in foreign currency are 
translated into U.S. dollar equivalents at the prevailing market rates as of 
the morning of valuation. Dividends receivable are accrued as of the 
ex-dividend date or as of the time that the relevant ex-dividend date and 
amounts become known. 
    

   Certain of the Fund's portfolio securities may be valued by an outside 
pricing service approved by the Fund's Trustees. The pricing service may 
utilize a matrix system incorporating security quality, maturity and coupon 
as the evaluation model parameters, and/or research evaluations by its staff, 
including review of broker-dealer market price quotations, in determining 
what it believes is the fair valuation of the portfolio securities valued by 
such pricing service. 

SHAREHOLDER SERVICES 
- ----------------------------------------------------------------------------- 

   
   Automatic Investment of Dividends and Distributions. All income dividends 
and capital gains distributions are automatically paid in full and fractional 
shares of the applicable Class of the Fund, (or, if specified by the 
shareholder, in shares of any other open-end Dean Witter Funds), unless the 
shareholder requests that they be paid in cash. Shares so acquired are 
acquired at net asset value and are not subject to the imposition of a 
front-end sales charge or a CDSC (see "Redemptions and Repurchases"). 

   Investment of Dividends or Distributions Received in Cash. Any shareholder 
who receives a cash payment representing a dividend or capital gains 
distribution may invest such dividend or distribution in shares of the 
applicable Class at the net asset value next determined after receipt by the 
Transfer Agent by returning the check or the proceeds to the Transfer Agent 
within 30 days after the payment date. Shares so acquired are acquired at net 
asset value and are not subject to the imposition of a front-end sales charge 
or a CDSC (see "Redemptions and Repurchases"). 
    

   EasyInvest(Service Mark). Shareholders may subscribe to EasyInvest, an 
automatic purchase plan which provides for any amount from $100 to $5,000 to 
be 

                                       25
<PAGE>

   
transferred automatically from a checking or savings account or following 
redemption of shares of a Dean Witter money market fund, on a semi-monthly, 
monthly or quarterly basis, to the Fund's Transfer Agent for investment in 
shares of the Fund (see "Purchase of Fund Shares" and "Redemptions and 
Repurchases--Involuntary Redemption"). 

   Systematic Withdrawal Plan. A systematic withdrawal plan (the "Withdrawal 
Plan") is available for shareholders who own or purchase shares of the Fund 
having a minimum value of $10,000 based upon the current net asset value. The 
Withdrawal Plan provides for monthly or quarterly (March, June, September, 
December) checks in any dollar amount, not less than $25, or in any whole 
percentage of the account balance, on an annualized basis. Any applicable 
CDSC will be imposed on shares redeemed under the Withdrawal Plan (see 
"Purchase of Fund Shares"). Therefore, any shareholder participating in the 
Withdrawal Plan will have sufficient shares redeemed from his or her account 
so that the proceeds (net of any applicable CDSC) to the shareholder will be 
the designated monthly or quarterly amount. Withdrawal plan payments should 
not be considered as dividends, yields or income. If periodic withdrawal plan 
payments continuously exceed net investment income and net capital gains, the 
shareholder's original investment will be correspondingly reduced and 
ultimately exhausted. Each withdrawal constitutes a redemption of shares and 
any gain or loss realized must be recognized for federal income tax purposes. 
    

   Shareholders should contact their DWR or other Selected Broker-Dealer 
Account Executive or the Transfer Agent for further information about any of 
the above services. 

   Tax Sheltered Retirement Plans. Retirement plans are available for use by 
corporations, the self-employed, Individual Retirement Accounts and Custodial 
Accounts under Section 403(b)(7) of the Internal Revenue Code. Adoption of 
such plans should be on advice of legal counsel or tax adviser. 

   For further information regarding plan administration, custodial fees and 
other details, investors should contact their DWR or other Selected 
Broker-Dealer account executive or the Transfer Agent. 

   
   Exchange Privilege. Shares of each Class may be exchanged for shares of 
the same Class of any other Dean Witter Multi-Class Fund without the 
imposition of any exchange fee. Shares may also be exchanged for shares of 
the following funds: Dean Witter Short-Term U.S. Treasury Trust, Dean Witter 
Limited Term Municipal Trust, Dean Witter Short-Term Bond Fund, Dean Witter 
Intermediate Term U.S. Treasury Trust and five Dean Witter funds which are 
money market funds (the "Exchange Funds"). Class A shares may also be 
exchanged for shares of Dean Witter Multi-State Municipal Series Trust and 
Dean Witter Hawaii Municipal Trust, which are Dean Witter Funds sold with a 
front-end sales charge ("FSC Funds"). Class B shares may also be exchanged 
for shares of Dean Witter Global Short-Term Income Fund Inc., Dean Witter 
High Income Securities and Dean Witter National Municipal Trust, which are 
Dean Witter Funds offered with a CDSC ("CDSC Funds"). Exchanges may be made 
after the shares of the Fund acquired by purchase (not by exchange or 
dividend reinvestment) have been held for thirty days. There is no waiting 
period for exchanges of shares acquired by exchange or dividend reinvestment. 

   An exchange to another Dean Witter Multi-Class Fund, any FSC Fund, any 
CDSC Fund or any Exchange Fund that is not a money market fund is on the 
basis of the next calculated net asset value per share of each fund after the 
exchange order is received. When exchanging into a money market fund from the 
Fund, shares of the Fund are redeemed out of the Fund at their next 
calculated net asset value and the proceeds of the redemption are used to 
purchase shares of the money market fund at their net asset value determined 
the following business day. Subsequent exchanges between any of the money 
market funds and any of the Dean Witter Multi-Class Funds, FSC Funds or CDSC 
Funds or any Exchange Fund that is not a money market fund can be effected on 
the same basis. 

   No CDSC is imposed at the time of any exchange of shares, although any 
applicable CDSC will be imposed upon ultimate redemption. During the period 
of time the shareholder remains in an 
    
                                       26
<PAGE>

   
Exchange Fund (calculated from the last day of the month in which the 
Exchange Fund shares were acquired), the holding period (for the purpose of 
determining the rate of the CDSC) is frozen. If those shares are subsequently 
re-exchanged for shares of a Dean Witter Multi-Class Fund or shares of a CDSC 
Fund, the holding period previously frozen when the first exchange was made 
resumes on the last day of the month in which shares of a Dean Witter 
Multi-Class Fund or shares of a CDSC Fund are reacquired. Thus, the CDSC is 
based upon the time (calculated as described above) the shareholder was 
invested in shares of a Dean Witter Multi-Class Fund or in shares of a CDSC 
Fund (see "Purchase of Fund Shares"). In the case of exchanges of Class A 
shares which are subject to a CDSC, the holding period also includes the time 
(calculated as described above) the shareholder was invested in shares of a 
FSC Fund. However, in the case of shares exchanged into an Exchange Fund on 
or after April 23, 1990, upon a redemption of shares which results in a CDSC 
being imposed, a credit (not to exceed the amount of the CDSC) will be given 
in an amount equal to the Exchange Fund 12b-1 distribution fees incurred on 
or after that date which are attributable to those shares. (Exchange Fund 
12b-1 distribution fees are described in the prospectuses for those funds.) 
Class B shares of the Fund acquired in exchange for Class B shares of another 
Dean Witter Multi-Class Fund or shares of a CDSC Fund having a different CDSC 
schedule than that of this Fund will be subject to the higher CDSC schedule, 
even if such shares are subsequently re-exchanged for shares of the fund with 
the lower CDSC schedule. 

   Additional Information Regarding Exchanges. Purchases and exchanges should 
be made for investment purposes only. A pattern of frequent exchanges may be 
deemed by the Investment Manager to be abusive and contrary to the best 
interests of the Fund's other shareholders and, at the Investment Manager's 
discretion, may be limited by the Fund's refusal to accept additional 
purchases and/or exchanges from the investor. Although the Fund does not have 
any specific definition of what constitutes a pattern of frequent exchanges, 
and will consider all relevant factors in determining whether a particular 
situation is abusive and contrary to the best interests of the Fund and its 
other shareholders, investors should be aware that the Fund and each of the 
other Dean Witter Funds may in their discretion limit or otherwise restrict 
the number of times this Exchange Privilege may be exercised by any investor. 
Any such restriction will be made by the Fund on a prospective basis only, 
upon notice to the shareholder not later than ten days following such 
shareholder's most recent exchange. Also, the Exchange Privilege may be 
terminated or revised at any time by the Fund and/or any of such Dean Witter 
Funds for which shares of the Fund may be exchanged, upon such notice as may 
be required by applicable regulatory agencies. Shareholders maintaining 
margin accounts with DWR or another Selected Broker-Dealer are referred to 
their account executive regarding restrictions on exchange of shares of the 
Fund pledged in the margin account. 

   The current prospectus for each fund describes its investment objective(s) 
and policies, and shareholders should obtain a copy and examine it carefully 
before investing. Exchanges are subject to the minimum investment requirement 
of each Class of shares and any other conditions imposed by each fund. In the 
case of a shareholder holding a share certificate or certificates, no 
exchanges may be made until all applicable share certificates have been 
received by the Transfer Agent and deposited in the shareholder's account. An 
exchange will be treated for federal income tax purposes the same as a 
repurchase or redemption of shares, on which the shareholder may realize a 
capital gain or loss. However, the ability to deduct capital losses on an 
exchange may be limited in situations where there is an exchange of shares 
within ninety days after the shares are purchased. The Exchange Privilege is 
only available in states where an exchange may legally be made. 
    

   If DWR or another Selected Broker-Dealer is the current dealer of record 
and its account numbers are part of the account information, shareholders may 
initiate an exchange of shares of the Fund for shares of any of the Dean 
Witter Funds (for which 

                                       27
<PAGE>

the Exchange Privilege is available) pursuant to this Exchange Privilege by 
contacting their account executive (no Exchange Privilege Authorization Form 
is required). Other shareholders (and those shareholders who are clients of 
DWR or another Selected Broker-Dealer but who wish to make exchanges directly 
by writing or telephoning the Transfer Agent) must complete and forward to 
the Transfer Agent an Exchange Privilege Authorization Form, copies of which 
may be obtained from the Transfer Agent, to initiate an exchange. If the 
Authorization Form is used, exchanges may be made in writing or by contacting 
the Transfer Agent at (800) 869-NEWS (toll-free). 

   The Fund will employ reasonable procedures to confirm that exchange 
instructions communicated over the telephone are genuine. Such procedures may 
include requiring various forms of personal identification such as name, 
mailing address, social security or other tax identification number and DWR 
or other Selected Broker-Dealer account number (if any). Telephone 
instructions may also be recorded. If such procedures are not employed, the 
Fund may be liable for any losses due to unauthorized or fraudulent 
instructions. 

   Telephone exchange instructions will be accepted if received by the 
Transfer Agent between 9:00 and 4:00 p.m. New York time, on any day the New 
York Stock Exchange is open. Any shareholder wishing to make an exchange who 
has previously filed an Exchange Privilege Authorization Form and who is 
unable to reach the Fund by telephone should contact his or her DWR or other 
Selected Broker-Dealer account executive, if appropriate, or make a written 
exchange request. Shareholders are advised that during periods of drastic 
economic or market changes it is possible that the telephone exchange 
procedures may be difficult to implement, although this has not been the 
experience of the Dean Witter Funds in the past. 

   For further information regarding the Exchange Privilege, shareholders 
should contact their DWR or other Selected Broker-Dealer account executive or 
the Transfer Agent. 

REDEMPTIONS AND REPURCHASES 
- ----------------------------------------------------------------------------- 

   
   Redemption. Shares of each Class of the Fund can be redeemed for cash at 
any time at the net asset value per share next determined less the amount of 
any applicable CDSC in the case of Class A, Class B or Class C (see "Purchase 
of Fund Shares"). If shares are held in a shareholder's account without a 
share certificate, a written request for redemption to the Fund's Transfer 
Agent at P.O. Box 983, Jersey City, N.J. 07303 is required. If certificates 
are held by the shareholder, the shares may be redeemed by surrendering the 
certificates with a written request for redemption along with any additional 
documentation required by the Transfer Agent. 
    

   Repurchase. DWR and other Selected Broker-Dealers are authorized to 
repurchase shares represented by a share certificate which is delivered to 
any of their offices. Shares held in a shareholder's account without a share 
certificate may also be repurchased by DWR and other Selected Broker-Dealers 
upon the telephonic or telegraphic request of the shareholder. The repurchase 
price is the net asset value next computed (see "Purchase of Fund Shares") 
after such repurchase order is received by DWR or other Selected 
Broker-Dealer, reduced by any applicable CDSC. 

   The CDSC, if any, will be the only fee imposed by the Fund or the 
Distributor. The offer by DWR and other Selected Broker-Dealers to 
repurchase shares may be suspended without notice by them at any time.
In that event, shareholders may redeem their shares through the Fund's
Transfer Agent as set forth above under "Redemption." 

   Payment for Shares Redeemed or Repurchased.  Payment for shares presented 
for repurchase or redemption will be made by check within seven days after 
receipt by the Transfer Agent of the certificate and/or written request in 
good order. Such 

                                       28
<PAGE>

payment may be postponed or the right of redemption suspended under unusual 
circumstances, e.g., when normal trading is not taking place on the New York 
Stock Exchange. If the shares to be redeemed have recently been purchased by 
check, payment of the redemption proceeds may be delayed for the minimum time 
needed to verify that the check used for investment has been honored (not 
more than fifteen days from the time of receipt of the check by the Transfer 
Agent). Shareholders maintaining margin accounts with DWR or another Selected 
Broker-Dealer are referred to their account executive regarding restrictions 
on redemption of shares of the Fund pledged in their margin accounts. 

   
   Reinstatement Privilege. A shareholder who has had his or her shares 
redeemed or repurchased and has not previously exercised this reinstatement 
privilege may, within 35 days after the date of the redemption or repurchase, 
reinstate any portion or all of the proceeds of such redemption or repurchase 
in shares of the Fund in the same Class from which such shares were redeemed 
or repurchased, at net asset value next determined after a reinstatement 
request, together with the proceeds, is received by the Transfer Agent and 
receive a pro rata credit for any CDSC paid in connection with such 
redemption or repurchase. 
    

   Involuntary Redemption. The Fund reserves the right, on sixty days' 
notice, to redeem at their net asset value the shares of any shareholder 
(other than shares held in an Individual Retirement Account or Custodial 
Account under Section 403(b)(7) of the Internal Revenue Code) whose shares, 
due to redemptions by the shareholder, have a value of less than $100 or such 
lesser amount as may be fixed by the Board of Trustees or, in the case of an 
account opened through EasyInvest(Service Mark), if after twelve months the 
shareholder has invested less than $1,000 in the account. However, before the 
Fund redeems such shares and sends the proceeds to the shareholder it will 
notify the shareholder that the value of the shares is less than the 
applicable amount and allow the shareholder sixty days to make an additional 
investment in an amount which will increase the value of the account to at 
least the applicable amount before the redemption is processed. No CDSC will 
be imposed on any involuntary redemption. 

DIVIDENDS, DISTRIBUTIONS AND TAXES 
- ----------------------------------------------------------------------------- 

   
   Dividends and Distributions. The Fund declares dividends separately for 
each Class of shares and intends to pay quarterly income dividends and to 
distribute net short-term and net long-term capital gains, if any, at least 
once each year. The Fund may, however, determine to retain all or part of any 
net long-term capital gains in any year for reinvestment. 

   All dividends and any capital gains distributions will be paid in 
additional shares of the same Class and automatically credited to the 
shareholder's account without issuance of a share certificate unless the 
shareholder requests in writing that all dividends and/or distributions be 
paid in cash. Shares acquired by dividend and distribution reinvestments will 
not be subject to any front-end sales charge or CDSC. Class B shares acquired 
through dividend and distribution reinvestments will become eligible for 
conversion to Class A shares on a pro rata basis. Distributions paid on Class 
A and Class D shares will be higher than for Class B and Class C shares 
because distribution fees paid by Class B and Class C shares are higher. (See 
"Shareholder Services--Automatic Investment of Dividends and Distributions.") 
    

   Taxes. Because the Fund intends to distribute all of its net investment 
income and any net short-term and long-term capital gains to shareholders and 
to otherwise qualify as a regulated investment company under Subchapter M of 
the Internal Revenue Code, it is not expected that the Fund will be required 
to pay any federal income tax on such income and capital gains. 

   Gains or losses on the Fund's transactions in certain listed options and 
on futures and options on futures generally are treated as 60% long-term gain 

                                       29
<PAGE>

or loss and 40% short-term gain or loss. When the Fund engages in options and 
futures transactions, various tax regulations applicable to the Fund may have 
the effect of causing the Fund to recognize a gain or loss for tax purposes 
before that gain or loss is realized, or to defer recognition of a realized 
loss for tax purposes. Recognition, for tax purposes, of an unrealized loss 
may result in a lesser amount of the Fund's net realized gains being 
available for distribution. 

   
   As a regulated investment company, the Fund is subject to the requirement 
that less than 30% of its gross income be derived from the sale of certain 
investments held for less than three months. This requirement may limit the 
Fund's ability to engage in options and futures transactions. 

   Shareholders who are required to pay taxes on their income will normally 
have to pay federal income taxes, and any applicable state and/or local 
income taxes, on the dividends and distributions they receive from the Fund. 
Such dividends and distributions, to the extent that they are derived from 
net investment income and net short-term capital gains, are taxable to the 
shareholder as ordinary dividend income regardless of whether the shareholder 
receives such distributions in additional shares or in cash. Any dividends 
declared in the last quarter of any calendar year which are paid in the 
following calendar year prior to February 1 will be deemed, for tax purposes, 
to have been received by the shareholder in the prior year. 
    

   Distributions of net long-term capital gains, if any, are taxable to 
shareholders as long-term capital gains regardless of how long a shareholder 
has held the Fund's shares and regardless of whether the distribution is 
received in additional shares or in cash. It is anticipated that only a small 
portion, if any, of the Fund's distributions may be eligible for the 
dividends received deduction to corporate shareholders. 

   
   The Fund may at times make payments from sources other than income or net 
capital gains. Payments from such sources would, in effect, represent a 
return of a portion of each shareholder's investment. All, or a portion, of 
such payments would not be taxable to shareholders. 
    

   After the end of the calendar year, shareholders will receive full 
information on their dividends and capital gains distributions for tax 
purposes, including information as to the portion taxable as ordinary income 
and the portion taxable as long-term capital gains. 

   To avoid being subject to a 31% federal backup withholding tax on taxable 
dividends, capital gains distributions and the proceeds of redemptions and 
repurchases, shareholders' taxpayer identification numbers must be furnished 
and certified as to their accuracy. 

   Dividends, interest and gains received by the Fund may give rise to 
withholding and other taxes imposed by foreign countries. If it qualifies for 
and has made the appropriate election with the Internal Revenue Service, the 
Fund will report annually to its shareholders the amount per share of such 
taxes, to enable shareholders to deduct their pro rata portion of such taxes 
from their taxable income or claim United States foreign tax credits with 
respect to such taxes. In the absence of such an election, the Fund would 
deduct foreign tax in computing the amount of its distributable income. 

   The foregoing discussion relates solely to the federal income tax 
consequences of an investment in the Fund. Distributions may also be subject 
to state and local taxes; therefore, each shareholder is advised to consult 
his or her own tax adviser. 

PERFORMANCE INFORMATION 
- ----------------------------------------------------------------------------- 

   
   From time to time the Fund may quote its "total return" in advertisements 
and sales literature. These figures are computed separately for Class A, 
Class B, Class C and Class D shares. The total return of the Fund is based on 
historical earnings and is not intended to indicate future performance. The 
"aver- 
    
                                       30
<PAGE>

   
age annual total return" of the Fund refers to a figure reflecting the average
annualized percentage increase (or decrease) in the value of an initial
investment in a Class of the Fund of $1,000 over a period of one, five and ten
years, or over the life of the Fund, if less than any of the foregoing. Average
annual total return reflects all income earned by the Fund, any appreciation or
depreciation of the Fund's assets, all expenses incurred by the applicable
Class and all sales charges which would be incurred by shareholders, for the
stated periods. It also assumes reinvestment of all dividends and distributions
paid by the Fund.

   In addition to the foregoing, the Fund may advertise its total return for 
each Class over different periods of time by means of aggregate, average, and 
year-by-year or other types of total return figures. The Fund may also 
advertise a growth of hypothetical investments of $10,000, $50,000 and 
$100,000 in each Class of shares of the Fund. Such calculations may or may 
not reflect the deduction of any sales charge which, if reflected, would 
reduce the performance quoted. The Fund from time to time may also advertise 
its performance relative to certain performance rankings and indices compiled 
by independent organizations (such as mutual fund performance rankings of 
Lipper Analytical Services, Inc.). 
    

ADDITIONAL INFORMATION 
- ----------------------------------------------------------------------------- 

   
   Voting Rights. All shares of beneficial interest of the Fund are of $0.01 
par value and are equal as to earnings, assets and voting privileges except 
that each Class will have exclusive voting privileges with respect to matters 
relating to distribution expenses borne solely by such Class or any other 
matter in which the interests of one Class differ from the interests of any 
other Class. In addition, Class B shareholders will have the right to vote on 
any proposed material increase in Class A's expenses, if such proposal is 
submitted separately to Class A shareholders. Also, as discussed herein, 
Class A, Class B and Class C bear the expenses related to the distribution of 
their respective shares. 
    

   The Fund is not required to hold Annual Meetings of Shareholders and, in 
ordinary circumstances, the Fund does not intend to hold such meetings. The 
Trustees may call Special Meetings of Shareholders for action by shareholder 
vote as may be required by the Act or the Declaration of Trust. The Trustees 
themselves have the power to alter the number and the terms of office of the 
Trustees (as provided for in the Declaration of Trust), and they may at any 
time lengthen or shorten their own terms or make their terms of unlimited 
duration and appoint their own successors, provided that always at least a 
majority of the Trustees has been elected by the shareholders of the Fund. 
Under certain circumstances the Trustees may be removed by action of the 
Trustees. The shareholders also have the right under certain circumstances to 
remove the Trustees. The voting rights of shareholders are not cumulative, so 
that holders of more than 50 percent of the shares voting can, if they 
choose, elect all Trustees being elected, while the holders of the remaining 
shares would be unable to elect any Trustees. 

   Under Massachusetts law, shareholders of a business trust may, under 
certain limited circumstances, be held personally liable as partners for the 
obligations of the Fund. However, the Declaration of Trust contains an 
express disclaimer of shareholder liability for acts or obligations of the 
Fund, requires that Fund obligations include such disclaimer, and provides 
for indemnification out of the Fund's property for any shareholder held 
personally liable for the obligations of the Fund. Thus, the risk of a 
shareholder incurring financial loss on account of shareholder liability is 
limited to circumstances in which the Fund itself would be unable to meet its 
obligations. Given the above limitations on shareholder personal liability, 
and the nature of the Fund's assets and operations, the possibility of the 
Fund being unable to meet its obligations is remote and, in the opinion of 
Massachusetts counsel to the Fund, the risk to Fund shareholders of personal 
liability is remote. 

                                       31
<PAGE>

   Code of Ethics. Directors, officers and employees of InterCapital, Dean 
Witter Services Company Inc. and the Distributor are subject to a strict Code 
of Ethics adopted by those companies. The Code of Ethics is intended to 
ensure that the interests of shareholders and other clients are placed ahead 
of any personal interest, that no undue personal ben-efit is obtained from a 
person's employment activities and that actual and potential conflicts of 
interest are avoided. To achieve these goals and comply with regulatory 
requirements, the Code of Ethics requires, among other things, that personal 
securities transactions by employees of the companies be subject to an 
advance clearance process to monitor that no Dean Witter Fund is engaged at 
the same time in a purchase or sale of the same security. The Code of Ethics 
bans the purchase of securities in an initial public offering and prohibits 
engaging in futures and options transactions and profiting on short-term 
trading (that is, a purchase within sixty days of a sale or a sale within 
sixty days of a purchase) of a security. In addition, investment personnel 
may not purchase or sell a security for their personal account within thirty 
days before or after any transaction in any Dean Witter Fund managed by them. 
Any violations of the Code of Ethics are subject to sanctions, including 
reprimand, demotion or suspension or termination of employment. The Code of 
Ethics comports with regulatory requirements and the recommendations in the 
1994 report by the Investment Company Institute Advisory Group on Personal 
Investing. 

   
   Master/Feeder Conversion. The Fund reserves the right to seek to achieve 
its investment objective by investing all of its investable assets in a 
non-diversified, open-end management investment company having the same 
investment objective and policies and substantially the same investment 
restrictions as those applicable to the Fund. 
    

   Shareholder Inquiries. All inquiries regarding the Fund should be directed 
to the Fund at the telephone numbers or address set forth on the front cover 
of this Prospectus. 

                                       32
<PAGE>

                        THE DEAN WITTER FAMILY OF FUNDS

MONEY MARKET FUNDS 
Dean Witter Liquid Asset Fund Inc. 
Dean Witter U.S. Government Money Market Trust 
Dean Witter Tax-Free Daily Income Trust 
Dean Witter California Tax-Free Daily Income Trust 
Dean Witter New York Municipal Money Market Trust 

EQUITY FUNDS 
Dean Witter American Value Fund 
Dean Witter Natural Resource Development Securities Inc. 
Dean Witter Dividend Growth Securities Inc. 
Dean Witter Developing Growth Securities Trust 
Dean Witter World Wide Investment Trust 
Dean Witter Value-Added Market Series 
Dean Witter Utilities Fund 
Dean Witter Capital Growth Securities 
Dean Witter European Growth Fund Inc. 
Dean Witter Precious Metals and Minerals Trust 
Dean Witter Pacific Growth Fund Inc. 
Dean Witter Health Sciences Trust 
Dean Witter Global Dividend Growth Securities 
Dean Witter Global Utilities Fund 
Dean Witter International Small Cap Fund 
Dean Witter Balanced Growth Fund 
Dean Witter Mid-Cap Growth Fund 
Dean Witter Capital Appreciation Fund 
Dean Witter Information Fund 
Dean Witter Japan Fund 
Dean Witter Income Builder Fund 
Dean Witter Special Value Fund 

   
Dean Witter Market Leader Trust 
Dean Witter Financial Services Trust 
    

FIXED-INCOME FUNDS 
Dean Witter High Yield Securities Inc. 
Dean Witter Tax-Exempt Securities Trust 
Dean Witter U.S. Government Securities Trust 
Dean Witter Federal Securities Trust 
Dean Witter Convertible Securities Trust 
Dean Witter California Tax-Free Income Fund 
Dean Witter New York Tax-Free Income Fund 
Dean Witter World Wide Income Trust 
Dean Witter Intermediate Income Securities 
Dean Witter Global Short-Term Income Fund Inc. 

   
Dean Witter Multi-State Municipal Series Trust 
    

Dean Witter Short-Term U.S. Treasury Trust 
Dean Witter Diversified Income Trust 
Dean Witter Limited Term Municipal Trust 
Dean Witter Short-Term Bond Fund
Dean Witter High Income Securities
Dean Witter National Municipal Trust
Dean Witter Balanced Income Fund
Dean Witter Hawaii Municipal Trust
Dean Witter Intermediate Term
  U.S. Treasury Trust

ASSET ALLOCATION FUNDS
Dean Witter Strategist Fund
Dean Witter Global Asset Allocation Fund

ACTIVE ASSETS ACCOUNT PROGRAM
Active Assets Money Trust
Active Assets Tax-Free Trust
Active Assets California Tax-Free Trust
Active Assets Government Securities Trust

DEAN WITTER RETIREMENT SERIES
Liquid Asset Series
U.S. Government Money Market Series
U.S. Government Securities Series
Intermediate Income Securities Series
American Value Series
Capital Growth Series
Dividend Growth Series
Stategist Series
Utilities Series
Value-Added Market Series
Global Equity Series

<PAGE>

Dean Witter 
Health Sciences Trust 
Two World Trade Center 
New York, New York 10048 

TRUSTEES 

Michael Bozic 
Charles A. Fiumefreddo 
Edwin J. Garn 
John R. Haire 
Dr. Manuel H. Johnson 
Michael E. Nugent 
Philip J. Purcell 
John L. Schroeder 

OFFICERS 

Charles A. Fiumefreddo 
Chairman and Chief Executive Officer 

   
Barry Fink 
Vice President, Secretary and 
General Counsel 
    

Ronald J. Worobel 
Vice President 

Thomas F. Caloia 
Treasurer 

CUSTODIAN 

The Bank of New York 
90 Washington Street 
New York, New York 10286 

TRANSFER AGENT AND 
DIVIDEND DISBURSING AGENT 

Dean Witter Trust Company 
Harborside Financial Center 
Plaza Two 
Jersey City, New Jersey 07311 

INDEPENDENT ACCOUNTANTS 

Price Waterhouse LLP 
1177 Avenue of the Americas 
New York, New York 10036 

INVESTMENT MANAGER 

Dean Witter InterCapital Inc. 

DEAN WITTER 
HEALTH SCIENCES 
TRUST 

   
PROSPECTUS--JULY 28, 1997
    

<PAGE>

   
STATEMENT OF ADDITIONAL INFORMATION                                DEAN WITTER  
JULY 28, 1997                                                           HEALTH 
                                                                      SCIENCES 
                                                                         TRUST 
- ------------------------------------------------------------------------------
    

   Dean Witter Health Sciences Trust (the "Fund") is an open-end, 
non-diversified management investment company whose investment objective is 
capital appreciation. The Fund seeks to achieve its investment objective by 
investing in securities of companies in the health sciences industry 
throughout the world. 

   
   A Prospectus for the Fund dated July 28, 1997, which provides the basic 
information you should know before investing in the Fund, may be obtained 
without charge from the Fund at the address or telephone numbers listed below 
or from the Fund's Distributor, Dean Witter Distributors Inc., or from Dean 
Witter Reynolds Inc. at any of its branch offices. This Statement of 
Additional Information is not a Prospectus. It contains information in 
addition to and more detailed than that set forth in the Prospectus. It is 
intended to provide additional information regarding the activities and 
operations of the Fund, and should be read in conjunction with the 
Prospectus. 
    

Dean Witter 
Health Sciences Trust 
Two World Trade Center 
New York, New York 10048 
(212) 392-2550 or 
(800) 869-NEWS (toll-free) 

<PAGE>

TABLE OF CONTENTS 
- -------------------------------------------------------------------------------

The Fund and its Management................................................   3 

Trustees and Officers .....................................................   6 

Investment Practices and Policies..........................................  12 

Investment Restrictions ...................................................  25 

Portfolio Transactions and Brokerage ......................................  26 

   
The Distributor............................................................  28 

Determination of Net Asset Value...........................................  32 

Purchase of Fund Shares ...................................................  33 

Shareholder Services.......................................................  35 

Redemptions and Repurchases................................................  40 

Dividends, Distributions and Taxes ........................................  41 

Performance Information ...................................................  42 

Description of Shares of the Fund..........................................  43 

Custodian and Transfer Agent...............................................  44 

Independent Accountants ...................................................  44 

Reports to Shareholders ...................................................  44 

Legal Counsel .............................................................  45 

Experts....................................................................  45 

Registration Statement ....................................................  45 
    

Financial Statements--July 31, 1996 .......................................  46 

   
Report of Independent Accountants..........................................  58 

Financial Statements--January 31, 1997 (unaudited) ........................  59 
    

                                       2
<PAGE>

THE FUND AND ITS MANAGEMENT 
- ------------------------------------------------------------------------------

THE FUND 

   The Fund is a trust of the type commonly known as a "Massachusetts 
business trust" and was organized under the laws of the Commonwealth of
Massachusetts on May 26, 1992.

THE INVESTMENT MANAGER 

   
   Dean Witter InterCapital Inc. (the "Investment Manager" or 
"InterCapital"), a Delaware corporation, whose address is Two World Trade
Center, New York, New York 10048, is the Fund's Investment Manager.
InterCapital is a wholly-owned subsidiary of Morgan Stanley, Dean Witter,
Discover & Co. ("MSDWD"), a Delaware corporation. In an internal reorganization
which took place in January, 1993, InterCapital assumed the investment
advisory, administrative and management activities previously performed by the
InterCapital Division of Dean Witter Reynolds Inc. ("DWR"), a broker-dealer
affiliate of InterCapital. (As hereinafter used in this Statement of Additional
Information, the terms "InterCapital" and "Investment Manager" refer to DWR's
InterCapital Division prior to the internal reorganization and to Dean Witter
InterCapital Inc. thereafter.) The daily management of the Fund and research
relating to the Fund's portfolio are conducted by or under the direction of
officers of the Fund and of the Investment Manager, subject to review by the
Fund's Board of Trustees. Information as to these Trustees and officers is
contained under the caption "Trustees and Officers."

   InterCapital is also the investment manager or investment adviser of the 
following management investment companies: Dean Witter Liquid Asset Fund 
Inc., InterCapital Income Securities Inc., InterCapital Insured Municipal 
Bond Trust, InterCapital Quality Municipal Investment Trust, InterCapital 
Insured Municipal Trust, Dean Witter High Yield Securities Inc., Dean Witter 
Tax-Free Daily Income Trust, Dean Witter Developing Growth Securities Trust, 
Dean Witter Tax-Exempt Securities Trust, Dean Witter Natural Resource 
Development Securities Inc., Dean Witter Dividend Growth Securities Inc., 
Dean Witter American Value Fund, Dean Witter U.S. Government Money Market 
Trust, Dean Witter Variable Investment Series, Dean Witter World Wide 
Investment Trust, Dean Witter Select Municipal Reinvestment Fund, Dean Witter 
U.S. Government Securities Trust, Dean Witter California Tax-Free Income 
Fund, Dean Witter New York Tax-Free Income Fund, Dean Witter Convertible 
Securities Trust, Dean Witter Federal Securities Trust, Dean Witter 
Value-Added Market Series, High Income Advantage Trust, High Income Advantage 
Trust II, High Income Advantage Trust III, Dean Witter Government Income 
Trust, Dean Witter Utilities Fund, Dean Witter California Tax-Free Daily 
Income Trust, Dean Witter Strategist Fund, Dean Witter World Wide Income 
Trust, Dean Witter Intermediate Income Securities, Dean Witter New York 
Municipal Money Market Trust, Dean Witter Capital Growth Securities, Dean 
Witter European Growth Fund Inc., Dean Witter Precious Metals and Minerals 
Trust, Dean Witter Global Short-Term Income Fund Inc., Dean Witter Pacific 
Growth Fund Inc., Dean Witter Multi-State Municipal Series Trust, Dean Witter 
Short-Term U.S. Treasury Trust, Dean Witter Limited Term Municipal Trust, 
Dean Witter Short-Term Bond Fund, Dean Witter Global Utilities Fund, Dean 
Witter National Municipal Trust, Dean Witter High Income Securities, Dean 
Witter International SmallCap Fund, Dean Witter Mid-Cap Growth Fund, 
InterCapital Quality Municipal Income Trust, Dean Witter Diversified Income 
Trust, Dean Witter Retirement Series, InterCapital Insured Municipal Income 
Trust, InterCapital California Insured Municipal Income Trust, InterCapital 
Quality Municipal Securities, InterCapital California Quality Municipal 
Securities, InterCapital New York Quality Municipal Securities, InterCapital 
Insured Municipal Securities, InterCapital Insured California Municipal 
Securities, Dean Witter Global Dividend Growth Securities, Dean Witter Select 
Dimensions Investment Series, Dean Witter Balanced Growth Fund, Dean Witter 
Balanced Income Fund, Dean Witter Hawaii Municipal Trust, Dean Witter Capital 
Appreciation Fund, Active Assets Money Trust, Active Assets Tax-Free Trust, 
Active Assets California Tax-Free Trust, Active Assets Government Securities 
Trust, Dean Witter Intermediate Term U.S. Treasury Trust, Dean Witter 
Information Fund, Dean Witter Japan Fund, Dean Witter Income Builder Fund, 
Dean Witter Special Value Fund, Dean Witter Financial Services Trust, Dean 
Witter Market Leader Trust, Municipal Income Trust, Municipal Income Trust 
II, Municipal Income Trust III, Municipal 
    
                                       3
<PAGE>

Income Opportunities Trust, Municipal Income Opportunities Trust II, 
Municipal Income Opportunities Trust III, Prime Income Trust and Municipal 
Premium Income Trust. The foregoing investment companies, together with the 
Fund, are collectively referred to as the Dean Witter Funds. 

   
   In addition, Dean Witter Services Company Inc. ("DWSC"), a wholly-owned 
subsidiary of InterCapital serves as manager for the following investment 
companies for which TCW Funds Management, Inc. is the investment adviser: 
TCW/DW Core Equity Trust, TCW/DW North American Government Income Trust, 
TCW/DW Latin American Growth Fund, TCW/DW Income and Growth Fund, TCW/DW 
Small Cap Growth Fund, TCW/DW Total Return Trust, TCW/DW Balanced Fund, 
TCW/DW Mid-Cap Equity Trust, TCW/DW Global Telecom Trust, TCW/DW Strategic 
Income Trust, TCW/DW Emerging Markets Opportunities Trust, TCW/DW Term Trust 
2000, TCW/DW Term Trust 2002 and TCW/DW Term Trust 2003 (the "TCW/DW Funds"). 
InterCapital also serves as: (i) administrator of The BlackRock Strategic 
Term Trust Inc., a closed-end investment company; and (ii) sub-administrator 
of MassMutual Participation Investors and Templeton Global Governments Income 
Trust, closed-end investment companies. 
    

   Pursuant to an Investment Management Agreement (the "Agreement") with the 
Investment Manager, the Fund has retained the Investment Manager to manage 
the investment of the Fund's assets, including the placing of orders for the 
purchase and sale of portfolio securities. The Investment Manager obtains and 
evaluates such information and advice relating to the economy, securities 
markets and specific securities as it considers necessary or useful to 
continuously manage the assets of the Fund in a manner consistent with its 
investment objective. 

   Under the terms of the Agreement, in addition to managing the Fund's 
investments, the Investment Manager maintains certain of the Fund's books and 
records and furnishes, at its own expense, such office space, facilities, 
equipment, clerical help, bookkeeping and certain legal services as the Fund 
may reasonably require in the conduct of its business, including the 
preparation of prospectuses, proxy statements and reports required to be 
filed with Federal and state securities commissions (except insofar as the 
participation or assistance of independent accountants and attorneys is, in 
the opinion of the Investment Manager, necessary or desirable). In addition, 
the Investment Manager pays the salaries of all personnel, including officers 
of the Fund, who are employees of the Investment Manager. The Investment 
Manager also bears the cost of telephone service, heat, light, power and 
other utilities provided to the Fund. 

   Effective December 31, 1993, pursuant to a Services Agreement between 
InterCapital and DWSC, DWSC began to provide the administrative services to 
the Fund which were previously performed directly by InterCapital. On April 
17, 1995, DWSC was reorganized in the State of Delaware, necessitating the 
entry into a new Services Agreement by InterCapital and DWSC on such date. 
The foregoing internal reorganizations did not result in any change in the 
nature or scope of the administrative services being provided to the Fund or 
any of the fees being paid by the Fund for the overall services being 
performed under the terms of the existing Agreement. 

   
   Expenses not expressly assumed by the Investment Manager under the 
Agreement or by the Distributor of the Fund's shares, Dean Witter 
Distributors Inc. ("Distributors" or the "Distributor") (see "The 
Distributor") will be paid by the Fund. These expenses will be allocated 
among the four classes of shares of the Fund (each, a "Class") pro rata based 
on the net assets of the Fund attributable to each Class, except as described 
below. The expenses borne by the Fund include, but are not limited to: 
expenses of the Plan of Distribution pursuant to Rule 12b-1 (the "12b-1 
fee"), charges and expenses of any registrar, custodian, stock transfer and 
dividend disbursing agent; brokerage commissions; taxes; engraving and 
printing of share certificates; registration costs of the Fund and its shares 
under Federal and state securities laws; the cost and expense of printing, 
including typesetting, and distributing prospectuses and statements of 
additional information of the Fund and supplements thereto to the Fund's 
shareholders; all expenses of shareholders' and Trustees' meetings and of 
preparing, printing and mailing of proxy statements and reports to 
shareholders; fees and travel expenses of Trustees or members of any advisory 
board or committee who are not employees of the Investment Manager or any 
corporate affiliate of the Investment Manager; all expenses incident to any 
dividend, withdrawal or redemption options; charges and expenses of any 
outside service used for pricing of the Fund's shares; 
    
                                       4
<PAGE>

   
fees and expenses of legal counsel, including counsel to the Trustees who are 
not interested persons of the Fund or of the Investment Manager (not 
including compensation or expenses of attorneys who are employees of the 
Investment Manager) and independent accountants; membership dues of industry 
associations; interest on Fund borrowings; postage; insurance premiums on 
property or personnel (including officers and Trustees) of the Fund which 
inure to its benefit; extraordinary expenses (including, but not limited to, 
legal claims and liabilities and litigation costs and any indemnification 
relating thereto); and all other costs of the Fund's operation. The 12b-1 
fees relating to a particular Class will be allocated directly to that Class. 
In addition, other expenses associated with a particular Class (except 
advisory or custodial fees) may be allocated directly to that Class, provided 
that such expenses are reasonably identified as specifically attributable to 
that Class and the direct allocation to that Class is approved by the 
Trustees. 

   As full compensation for the services and facilities furnished to the Fund 
and expenses of the Fund assumed by the Investment Manager, the Fund pays the 
Investment Manager monthly compensation calculated daily by applying the 
annual rate of 1.0% to the net assets of the Fund up to $500 million, scaled 
down to 0.95% of the portion of daily net assets exceeding $500 million, 
determined as of the close of each business day. For the fiscal years ended 
July 31, 1994, 1995, and 1996, the Fund accrued to the Investment Manager 
total compensation of $2,603,442, $2,477,072, and $3,862,384, respectively. 

   The Agreement provides that in the absence of willful misfeasance, bad 
faith, gross negligence or reckless disregard of its obligations thereunder, 
the Investment Manager is not liable to the Fund or any of its investors for 
any act or omission by the Investment Manager or for any losses sustained by 
the Fund or its investors. The Agreement in no way restricts the Investment 
Manager from acting as investment manager or adviser to others. 

   The Agreement was initially approved by the Board of Trustees on February 
21, 1997 and by the shareholders of the Fund at a Special Meeting of 
Shareholders held on May 21, 1997. The Agreement is substantially identical 
to a prior investment management agreement which was initially approved by 
the Board of Trustees on July 29, 1992 and by DWR, the then sole shareholder 
of the Fund, on July 31, 1992, and amended by the Fund's Board of Trustees at 
their meeting held on April 17, 1996 to provide a breakpoint in the 
management fee that reduces the compensation received by the Investment 
Manager under the Agreement on assets exceeding $500 million. The Agreement 
took effect on May 31, 1997 upon the consummation of the merger of Dean 
Witter, Discover & Co. with Morgan Stanley Group Inc. The Agreement may be 
terminated at any time, without penalty, on thirty days' notice by the Board 
of Trustees of the Fund, by the holders of a majority, as defined in the 
Investment Company Act of 1940 (the "Act"), of the outstanding shares of the 
Fund, or by the Investment Manager. The Agreement will automatically 
terminate in the event of its assignment (as defined in the Act). 

   Under its terms, the Agreement has an initial term ending April 30, 1999 
and provides that it will continue in effect from year to year thereafter, 
provided such continuance of the Agreement is approved at least annually by 
the vote of the holders of a majority, as defined in the Act, of the 
outstanding shares of the Fund, or by the Board of Trustees of the Fund; 
provided that in either event such continuance is approved annually by the 
vote of a majority of the Trustees of the Fund who are not parties to the 
Agreement or "interested persons" (as defined in the Act) of any such party, 
which vote must be cast in person at a meeting called for the purpose of 
voting on such approval. 

   The Fund has acknowledged that the name "Dean Witter" is a property right 
of DWR. The Fund has agreed that DWR or its parent company may use, or at any 
time permit others to use, the name "Dean Witter." The Fund has also agreed 
that in the event the Agreement between InterCapital and the Fund is 
terminated, or if the affiliation between the Investment Manager and its 
parent company is terminated, the Fund will eliminate the name "Dean Witter" 
from its name if DWR or its parent company shall so request. 
    
                                       5
<PAGE>

TRUSTEES AND OFFICERS 
- ------------------------------------------------------------------------------

   
   The Trustees and Executive Officers of the Fund, their principal business 
occupations during the last five years and their affiliations, if any, with 
InterCapital and with the 83 Dean Witter Funds and 14 TCW/DW Funds are shown 
below: 
    

   
<TABLE>
<CAPTION>
  NAME, AGE, POSITION WITH FUND AND ADDRESS        PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- -------------------------------------------- ------------------------------------------------------- 
<S>                                          <C>
Michael Bozic (56).........................  Chairman and Chief Executive Officer of Levitz 
Trustee                                      Furniture Corporation (since November, 1995); Director 
c/o Levitz Furniture Corporation             or Trustee of the Dean Witter Funds; formerly President 
6111 Broken Sound Parkway, N.W.              and Chief Executive Officer of Hills Department Stores 
Boca Raton, Florida                          (May, 1991-July, 1995); formerly variously Chairman, 
                                             Chief Executive Officer, President and Chief Operating 
                                             Officer (1987-1991) of the Sears Merchandise Group of 
                                             Sears, Roebuck and Co.; Director of Eaglemark Financial 
                                             Services, Inc., the United Negro College Fund and 
                                             Weirton Steel Corporation. 

Charles A. Fiumefreddo* (64)...............  Chairman, Chief Executive Officer and Director of 
Chairman, President,                         InterCapital, Distributors and DWSC; Executive Vice 
Chief Executive Officer and Trustee          President and Director of DWR; Chairman, Director or 
Two World Trade Center                       Trustee, President and Chief Executive Officer of the 
New York, New York                           Dean Witter Funds; Chairman, Chief Executive Officer 
                                             and Trustee of the TCW/DW Funds; Chairman and Director 
                                             of Dean Witter Trust Company ("DWTC"); Director and/or 
                                             officer of various MSDWD subsidiaries; formerly 
                                             Executive Vice President and Director of Dean Witter, 
                                             Discover & Co. (until February, 1993). 

Edwin J. Garn (64).........................  Director or Trustee of the Dean Witter Funds; formerly 
Trustee                                      United States Senator (R-Utah)(1974-1992) and Chairman, 
c/o Huntsman Corporation                     Senate Banking Committee (1980-1986); formerly Mayor of 
500 Huntsman Way                             Salt Lake City, Utah (1972-1974); formerly Astronaut, 
Salt Lake City, Utah                         Space Shuttle Discovery (April 12-19, 1985); Vice 
                                             Chairman, Huntsman Corporation (since January, 1993); 
                                             Director of Franklin Quest (time management systems) 
                                             and John Alden Financial Corp (health insurance); 
                                             Member of the board of various civic and charitable 
                                             organizations. 

John R. Haire (72).........................  Chairman of the Audit Committee and Chairman of the 
Trustee                                      Committee of the Independent Directors or Trustees and 
Two World Trade Center                       Director or Trustee of the Dean Witter Funds; Chairman 
New York, New York                           of the Audit Committee and Chairman of the Committee of 
                                             the Independent Trustees and Trustee of the TCW/DW 
                                             Funds; formerly President, Council for Aid to Education 
                                             (1978-1989) and Chairman and Chief Executive Officer of 
                                             Anchor Corporation, an Investment Adviser (1964-1978); 
                                             Director of Washington National Corporation 
                                             (insurance). 

                                       6
<PAGE>

  NAME, AGE, POSITION WITH FUND AND ADDRESS        PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- -------------------------------------------- ------------------------------------------------------- 

Wayne E. Hedien** (63).....................  Retired; Director or Trustee of the Dean Witter Funds 
Trustee                                      (commencing on September 1, 1997); Director of The PMI 
c/o Gordon Altman Butowsky                   Group, Inc. (private mortgage insurance); Trustee and 
 Weitzen Shalov & Wein                       Vice Chairman of The Field Museum of Natural History; 
Counsel to the Independent Trustees          formerly associated with the Allstate Companies 
114 West 47th Street                         (1966-1994), most recently as Chairman of The Allstate 
New York, New York                           Corporation (March, 1993-December, 1994) and Chairman 
                                             and Chief Executive Officer of its wholly-owned 
                                             subsidiary, Allstate Insurance Company (July, 1989- 
                                             December, 1994); director of various other business and 
                                             charitable organizations. 

Dr. Manuel H. Johnson (48).................  Senior Partner, Johnson Smick International, Inc., a 
Trustee                                      consulting firm; Co-Chairman and a founder of the Group 
c/o Johnson Smick International, Inc.        of Seven Council (G7C), an international economic 
1133 Connecticut Avenue, N.W.                commission; Director or Trustee of the Dean Witter 
Washington, DC                               Funds; Trustee of the TCW/DW Funds; Director of NASDAQ 
                                             (since June, 1995); Trustee of the Financial Accounting 
                                             Foundation (oversight organization for the Financial 
                                             Accounting Standards Board); Director of Greenwich 
                                             Capital Markets, Inc. (broker-dealer); formerly Vice 
                                             Chairman of the Board of Governors of the Federal 
                                             Reserve System (1986-1990) and Assistant Secretary of 
                                             the U.S. Treasury. 

Michael E. Nugent (61).....................  General Partner, Triumph Capital, L.P., a private 
Trustee                                      investment partnership; Director or Trustee of the Dean 
c/o Triumph Capital, L.P.                    Witter Funds; Trustee of the TCW/DW Funds; formerly 
237 Park Avenue                              Vice President, Bankers Trust Company and BT Capital 
New York, New York                           Corporation (1984-1988); Director of various business 
                                             organizations. 

Philip J. Purcell* (53)....................  Chairman of the Board of Directors and Chief Executive 
Trustee                                      Officer of MSDWD, DWR, and Novus Credit Services Inc.; 
1585 Broadway                                Director of InterCapital, DWSC, and Distributors; 
New York, New York                           Director or Trustee of the Dean Witter Funds; Director 
                                             and/or officer of various MSDWD subsidiaries. 

John L. Schroeder (66).....................  Retired; Director or Trustee of the Dean Witter Funds; 
Trustee                                      Trustee of the TCW/DW Funds; Director of Citizens 
c/o Gordon Altman Butowsky Weitzen           Utilities Company; Formerly Executive Vice President 
 Shalov & Wein                               and Chief Investment Officer of the Home Insurance 
Counsel to the Independent Trustees          Company (August, 1991-September, 1995). 
114 West 47th Street 
New York, New York 

                                       7
<PAGE>

  NAME, AGE, POSITION WITH FUND AND ADDRESS        PRINCIPAL OCCUPATIONS DURING LAST FIVE YEARS 
- -------------------------------------------- ------------------------------------------------------- 
Barry Fink (42)............................  Senior Vice President (since March, 1997) and Secretary 
Vice President, Secretary                    and General Counsel (since February, 1997) of 
 and General Counsel                         InterCapital and DWSC; Senior Vice President (since 
Two World Trade Center                       March, 1997) and Assistant Secretary and Assistant 
New York, New York                           General Counsel (since February, 1997) of Distributors; 
                                             Assistant Secretary of DWR (since August, 1996); Vice 
                                             President, Secretary and General Counsel of the Dean 
                                             Witter Funds and the TCW/DW Funds (since February, 
                                             1997); previously First Vice President (June, 
                                             1993-February, 1997), Vice President (until June, 1993) 
                                             and Assistant Secretary and Assistant General Counsel 
                                             of InterCapital and DWSC and Assistant Secretary of the 
                                             Dean Witter Funds and the TCW/DW Funds. 

Ronald J. Worobel (54) ....................  Senior Vice President of InterCapital (since June 
Vice President                               1993); Vice President of various Dean Witter Funds; 
Two World Trade Center                       formerly Vice President of InterCapital (June, 
New York, New York                           1992-June, 1993). 

Thomas F. Caloia (51) .....................  First Vice President and Assistant Treasurer of 
Treasurer                                    InterCapital and DWSC; Treasurer of the Dean Witter 
Two World Trade Center                       Funds and the TCW/DW Funds. 
New York, New York 
</TABLE>
    

   
- --------------
*  Denotes Trustees who are "interested persons" of the Fund, as defined in 
   the Act. 
** Mr. Hedien's term as Trustee will commence on September 1, 1997. 

  In addition, Robert M. Scanlan, President and Chief Operating Officer of 
InterCapital and DWSC, Executive Vice President of Distributors and DWTC and 
Director of DWTC, Mitchell M. Merin, President and Chief Strategic Officer of 
InterCapital and DWSC, Executive Vice President of Distributors and DWTC and 
Director of DWTC, Executive Vice President and Director of DWR, Director of 
SPS Transaction Services, Inc. and various other MSDWD subsidiaries, Robert 
S. Giambrone, Senior Vice President of InterCapital, DWSC, Distributors and 
DWTC, and Director of DWTC, Joseph J. McAlinden, Executive Vice President and 
Chief Investment Officer of InterCapital and Director of DWTC, and Kenton J. 
Hinchliffe, Ira N. Ross and Paul D. Vance, Senior Vice Presidents of 
InterCapital, are Vice Presidents of the Fund. Marilyn K. Cranney, First Vice 
President and Assistant General Counsel of InterCapital and DWSC, LouAnne D. 
McInnis, Carsten Otto and Ruth Rossi, Vice Presidents and Assistant General 
Counsels of InterCapital and DWSC, and Frank Bruttomesso, a Staff Attorney 
with InterCapital, are Assistant Secretaries of the Fund. 

THE BOARD OF TRUSTEES, THE INDEPENDENT TRUSTEES, AND THE COMMITTEES 

   The Board of Trustees currently consists of eight (8) trustees; as noted 
above, Mr. Hedien's term will commence on September 1, 1997. These same 
individuals also serve as directors or trustees for all of the Dean Witter 
Funds, and are referred to in this section as Trustees. As of the date of 
this Statement of Additional Information, there are a total of 83 Dean Witter 
Funds, comprised of 126 portfolios. As of June 30, 1997, the Dean Witter 
Funds had total net assets of approximately $87.9 billion and more than six 
million shareholders. 

   Six Trustees and Mr. Hedien (77% of the total number) have no affiliation 
or business connection with InterCapital or any of its affiliated persons and 
do not own any stock or other securities issued by InterCapital's parent 
company, MSDWD. These are the "disinterested" or "independent" Trustees. The 
other two Trustees (the "management Trustees") are affiliated with 
InterCapital. Four of the six independent Trustees are also Independent 
Trustees of the TCW/DW Funds. 
    
                                       8
<PAGE>

   
   Law and regulation establish both general guidelines and specific duties 
for the Independent Trustees. The Dean Witter Funds seek as Independent 
Trustees individuals of distinction and experience in business and finance, 
government service or academia; these are people whose advice and counsel are 
in demand by others and for whom there is often competition. To accept a 
position on the Funds' Boards, such individuals may reject other attractive 
assignments because the Funds make substantial demands on their time. Indeed, 
by serving on the Funds' Boards, certain Trustees who would otherwise be 
qualified and in demand to serve on bank boards would be prohibited by law 
from doing so. 

   All of the current Independent Trustees serve as members of the Audit 
Committee and the Committee of the Independent Trustees. Three of them also 
serve as members of the Derivatives Committee. During the calendar year ended 
December 31, 1996, the three Committees held a combined total of sixteen 
meetings. The Committees hold some meetings at InterCapital's offices and 
some outside InterCapital. Management Trustees or officers do not attend 
these meetings unless they are invited for purposes of furnishing information 
or making a report. 

   The Committee of the Independent Trustees is charged with recommending to 
the full Board approval of management, advisory and administration contracts, 
Rule 12b-1 plans and distribution and underwriting agreements; continually 
reviewing Fund performance; checking on the pricing of portfolio securities, 
brokerage commissions, transfer agent costs and performance, and trading 
among Funds in the same complex; and approving fidelity bond and related 
insurance coverage and allocations, as well as other matters that arise from 
time to time. The Independent Trustees are required to select and nominate 
individuals to fill any Independent Trustee vacancy on the Board of any Fund 
that has a Rule 12b-1 plan of distribution. Most of the Dean Witter Funds 
have such a plan. 

   The Audit Committee is charged with recommending to the full Board the 
engagement or discharge of the Fund's independent accountants; directing 
investigations into matters within the scope of the independent accountants' 
duties, including the power to retain outside specialists; reviewing with the 
independent accountants the audit plan and results of the auditing 
engagement; approving professional services provided by the independent 
accountants and other accounting firms prior to the performance of such 
services; reviewing the independence of the independent accountants; 
considering the range of audit and non-audit fees; reviewing the adequacy of 
the Fund's system of internal controls; and preparing and submitting 
Committee meeting minutes to the full Board. 

   Finally, the Board of each Fund has formed a Derivatives Committee to 
establish parameters for and oversee the activities of the Fund with respect 
to derivative investments, if any, made by the Fund. 

DUTIES OF CHAIRMAN OF COMMITTEE OF THE INDEPENDENT TRUSTEES AND AUDIT 
COMMITTEE 

   The Chairman of the Committee of the Independent Trustees and the Audit 
Committee maintains an office at the Funds' headquarters in New York. He is 
responsible for keeping abreast of regulatory and industry developments and 
the Funds' operations and management. He screens and/or prepares written 
materials and identifies critical issues for the Independent Trustees to 
consider, develops agendas for Committee meetings, determines the type and 
amount of information that the Committees will need to form a judgment on 
various issues, and arranges to have that information furnished to Committee 
members. He also arranges for the services of independent experts and 
consults with them in advance of meetings to help refine reports and to focus 
on critical issues. Members of the Committees believe that the person who 
serves as Chairman of both Committees and guides their efforts is pivotal to 
the effective functioning of the Committees. 

   The Chairman of the Committees also maintains continuous contact with the 
Funds' management, with independent counsel to the Independent Trustees and 
with the Funds' independent auditors. He arranges for a series of special 
meetings involving the annual review of investment advisory, management and 
other operating contracts of the Funds and, on behalf of the Committees, 
conducts negotiations with the Investment Manager and other service 
providers. In effect, the Chairman of the Committees serves as a combination 
of chief executive and support staff of the Independent Trustees. 

   The Chairman of the Committee of the Independent Trustees and the Audit 
Committee is not employed by any other organization and devotes his time 
primarily to the services he performs as 
    
                                       9
<PAGE>

   
Committee Chairman and Independent Trustee of the Dean Witter Funds and as an 
Independent Trustee and, since July 1, 1996, as Chairman of the Committee of 
the Independent Trustees and the Audit Committee of the TCW/DW Funds. The 
current Committee Chairman has had more than 35 years experience as a senior 
executive in the investment company industry. 

ADVANTAGES OF HAVING SAME INDIVIDUALS AS INDEPENDENT TRUSTEES FOR ALL DEAN 
WITTER FUNDS 

   The Independent Trustees and the Funds' management believe that having the 
same Independent Trustees for each of the Dean Witter Funds avoids the 
duplication of effort that would arise from having different groups of 
individuals serving as Independent Trustees for each of the Funds or even of 
sub-groups of Funds. They believe that having the same individuals serve as 
Independent Trustees of all the Funds tends to increase their knowledge and 
expertise regarding matters which affect the Fund complex generally and 
enhances their ability to negotiate on behalf of each Fund with the Fund's 
service providers. This arrangement also precludes the possibility of 
separate groups of Independent Trustees arriving at conflicting decisions 
regarding operations and management of the Funds and avoids the cost and 
confusion that would likely ensue. Finally, having the same Independent 
Trustees serve on all Fund Boards enhances the ability of each Fund to 
obtain, at modest cost to each separate Fund, the services of Independent 
Trustees, and a Chairman of their Committees, of the caliber, experience and 
business acumen of the individuals who serve as Independent Trustees of the 
Dean Witter Funds. 
    

COMPENSATION OF INDEPENDENT TRUSTEES 

   The Fund pays each Independent Trustee an annual fee of $1,000 plus a per 
meeting fee of $50 for meetings of the Board of Trustees or committees of the 
Board of Trustees attended by the Trustee (the Fund pays the Chairman of the 
Audit Committee an annual fee of $750 and pays the Chairman of the Committee 
of the Independent Trustees an additional annual fee of $1,200). The Fund 
also reimburses such Trustees for travel and other out-of-pocket expenses 
incurred by them in connection with attending such meetings. Trustees and 
officers of the Fund who are or have been employed by the Investment Manager 
or an affiliated company receive no compensation or expense reimbursement 
from the Fund. 

   The following table illustrates the compensation paid to the Fund's 
Independent Trustees by the Fund for the fiscal year ended July 31, 1996. 

                              FUND COMPENSATION 

<TABLE>
<CAPTION>
                               AGGREGATE 
                             COMPENSATION 
NAME OF INDEPENDENT TRUSTEE  FROM THE FUND 
- ---------------------------  ------------- 
<S>                              <C>
Michael Bozic ..............     $1,750 
Edwin J. Garn ..............      1,850 
John R. Haire ..............      3,963(1) 
Dr. Manuel H. Johnson  .....      1,800 
Michael E. Nugent ..........      1,700 
John L. Schroeder...........      1,800 
</TABLE>

(1)    Of Mr. Haire's compensation from the Fund, $3,150 was paid to him as 
       Chairman of the Committee of the Independent Trustees ($2,400) and as 
       Chairman of the Audit Committee ($750). 

   The following table illustrates the compensation paid to the Fund's 
Independent Trustees for the calendar year ended December 31, 1995 for 
services to the 79 Dean Witter Funds and, in the case of Messrs. Haire, 
Johnson, Nugent and Schroeder, the 11 TCW/DW Funds that were in operation at 
December 31, 1995. With respect to Messrs. Haire, Johnson, Nugent and 
Schroeder, the TCW/DW Funds are included solely because of a limited exchange 
privilege between those Funds and five Dean Witter Money Market Funds. Mr. 
Schroeder was elected as a Trustee of the TCW/DW Funds on April 20, 1995. 

                                       10
<PAGE>

   
          CASH COMPENSATION FROM DEAN WITTER FUNDS AND TCW/DW FUNDS 
    

   
<TABLE>
<CAPTION>
                                                                FOR SERVICE AS 
                                                                 CHAIRMAN OF     TOTAL CASH 
                                FOR SERVICE                     COMMITTEES OF   COMPENSATION 
                              AS DIRECTOR OR    FOR SERVICE AS   INDEPENDENT        PAID 
                                TRUSTEE AND      TRUSTEE AND      DIRECTORS/   FOR SERVICES TO 
                             COMMITTEE MEMBER  COMMITTEE MEMBER  TRUSTEES AND  79 DEAN WITTER 
                             OF 79 DEAN WITTER   OF 11 TCW/DW       AUDIT       FUNDS AND 11 
NAME OF INDEPENDENT TRUSTEE        FUNDS            FUNDS         COMMITTEES    TCW/DW FUNDS 
- ---------------------------        -----            -----         ----------    ------------ 
<S>                              <C>               <C>             <C>            <C>
Michael Bozic ..............     $126,050               --               --       $126,050 
Edwin J. Garn ..............      136,450               --               --        136,450 
John R. Haire ..............       98,450          $82,038         $217,350(2)     397,838 
Dr. Manuel H. Johnson  .....      136,450           82,038               --        218,488 
Michael E. Nugent ..........      124,200           75,038               --        199,238 
John L. Schroeder...........      136,450           46,964               --        183,414 
</TABLE>
    
- --------------
(2)    For the 79 Dean Witter Funds in operation at December 31, 1995. As 
       noted above, on July 1, 1996, Mr. Haire became Chairman of the 
       Committee of the Independent Trustees and the Audit Committee of the 
       TCW/DW Funds in addition to continuing to serve in such positions for 
       the Dean Witter Funds. 

   As of the date of this Statement of Additional Information, 57 of the Dean 
Witter Funds, including the Fund, have adopted a retirement program under 
which an Independent Trustee who retires after serving for at least five 
years (or such lesser period as may be determined by the Board) as an 
Independent Director or Trustee of any Dean Witter Fund that has adopted the 
retirement program (each such Fund referred to as an "Adopting Fund" and each 
such Trustee referred to as an "Eligible Trustee") is entitled to retirement 
payments upon reaching the eligible retirement age (normally, after attaining 
age 72). Annual payments are based upon length of service. Currently, upon 
retirement, each Eligible Trustee is entitled to receive from the Adopting 
Fund, commencing as of his or her retirement date and continuing for the 
remainder of his or her life, an annual retirement benefit (the "Regular 
Benefit") equal to 25.0% of his or her Eligible Compensation plus 0.4166666% 
of such Eligible Compensation for each full month of service as an 
Independent Director or Trustee of any Adopting Fund in excess of five years 
up to a maximum of 50.0% after ten years of service. The foregoing 
percentages may be changed by the Board.(3) "Eligible Compensation" is 
one-fifth of the total compensation earned by such Eligible Trustee for 
service to the Adopting Fund in the five year period prior to the date of the 
Eligible Trustee's retirement. Benefits under the retirement program are not 
secured or funded by the Adopting Funds. 

   The following table illustrates the retirement benefits accrued to the 
Fund's Independent Trustees by the Fund for the fiscal year ended July 31, 
1996 and by the 57 Dean Witter Funds (including the Fund) as of December 31, 
1995, and the estimated retirement benefits for the Fund's Independent 
Trustees from the Fund as of July 31, 1996 and from the 57 Dean Witter Funds 
as of December 31, 1995. 

- --------------
(3)    An Eligible Trustee may elect alternate payments of his or her 
       retirement benefits based upon the combined life expectancy of such 
       Eligible Trustee and his or her spouse on the date of such Eligible 
       Trustee's retirement. The amount estimated to be payable under this 
       method, through the remainder of the later of the lives of such 
       Eligible Trustee and spouse, will be the actuarial equivalent of the 
       Regular Benefit. In addition, the Eligible Trustee may elect that the 
       surviving spouse's periodic payment of benefits will be equal to either 
       50% or 100% of the previous periodic amount, an election that, 
       respectively, increases or decreases the previous periodic amount so 
       that the resulting payments will be the actuarial equivalent of the 
       Regular Benefit. 

                                       11
<PAGE>

         RETIREMENT BENEFITS FROM THE FUND AND ALL DEAN WITTER FUNDS 

<TABLE>
<CAPTION>
                             
                              
                                                            
                                                            
                                  FOR ALL ADOPTING FUNDS                                    
                             -------------------------------                       ESTIMATED ANNUAL 
                                ESTIMATED                    RETIREMENT BENEFITS      BENEFITS     
                                CREDITED                     ACCRUED AS EXPENSES UPON RETIREMENT(4)
                                  YEARS         ESTIMATED    ------------------- ------------------ 
                              OF SERVICE AT   PERCENTAGE OF             BY ALL    FROM    FROM ALL 
                               RETIREMENT       ELIGIBLE      BY THE   ADOPTING    THE    ADOPTING 
NAME OF INDEPENDENT TRUSTEE   (MAXIMUM 10)    COMPENSATION     FUND     FUNDS     FUND     FUNDS 
- ---------------------------  --------------- --------------- -------- ---------- ------- ---------- 
<S>                                <C>            <C>         <C>      <C>       <C>      <C>
Michael Bozic ..............       10             50.0%       $  412   $ 26,359  $  950   $ 51,550 
Edwin J. Garn ..............       10             50.0           698     41,901     950     51,550 
John R. Haire ..............       10             50.0         4,333    261,763   1,961    130,404 
Dr. Manuel H. Johnson  .....       10             50.0           277     16,748     950     51,550 
Michael E. Nugent ..........       10             50.0           523     30,370     950     51,550 
John L. Schroeder...........        8             41.7           802     51,812     792     42,958 
</TABLE>

- --------------
(4)    Based on current levels of compensation. Amount of annual benefits also 
       varies depending on the Trustee's elections described in Footnote (3) 
       above. 

   As of the date of this Statement of Additional Information, the aggregate 
number of shares of beneficial interest of the Fund owned by the Fund's 
officers and Trustees as a group was less than 1 percent of the Fund's shares 
of beneficial interest outstanding. 

INVESTMENT PRACTICES AND POLICIES 
- ----------------------------------------------------------------------------- 

   As stated in the Prospectus, the Fund currently anticipates investing over 
65% of its total assets in securities of companies in the health sciences 
industry. The Fund's prospectus contains disclosure discussing the risks of 
investing in a single industry. 

   Private Placements/Illiquid Investments. Under a non-fundamental policy, 
which may be changed by the Trustees of the Fund, the Fund may invest up to 
15% of its net assets in illiquid securities. 

   The Securities and Exchange Commission has adopted Rule 144A under the 
Securities Act of 1933, which permits the Fund to sell restricted securities 
to qualified institutional buyers without limitation. The Trustees of the 
Fund have adopted procedures for the Investment Manager to utilize in 
determining the liquidity of securities which may be sold pursuant to Rule 
144A. In addition, the Trustees have determined that, where such securities 
are determined to be liquid under these procedures, investment in such 
securities by the Fund shall not be subject to the 15% limitation referred to 
above. 

   The Investment Manager will monitor the liquidity of restricted securities 
in the Fund's portfolio under the supervision of the Board of Trustees. In 
reaching liquidity decisions, the Investment Manager will consider, among 
others, the following factors: (1) the frequency of trades and quotes for the 
security; (2) the number of dealers wishing to purchase or sell the security 
and the number of other potential purchasers; (3) dealer undertakings to make 
a market in the security; and (4) the nature of the security and the nature 
of the marketplace trades (e.g., the time needed to dispose of the security, 
the method of soliciting offers and the mechanics of the transfer). 

   Investing in Rule 144A securities could have the effect of increasing the 
level of Fund illiquidity to the extent the Fund, at a particular point in 
time, may be unable to find qualified institutional buyers interested in 
purchasing such securities. 

   Convertible Securities. The Fund may invest in fixed-income securities 
which are convertible into common stock. Convertible securities rank senior 
to common stocks in a corporation's capital structure and, therefore, entail 
less risk than the corporation's common stock. The value of a convertible 
security is a function of its "investment value" (its value as if it did not 
have a conversion privilege), and its "conversion value" (the security's 
worth if it were to be exchanged for the underlying security, at market 
value, pursuant to its conversion privilege). 

   To the extent that a convertible security's investment value is greater 
than its conversion value, its price will be primarily a reflection of such 
investment value and its price will be likely to increase when 

                                       12
<PAGE>

interest rates fall and decrease when interest rates rise, as with a 
fixed-income security (the credit standing of the issuer and other factors 
may also have an effect on the convertible security's value). If the 
conversion value exceeds the investment value, the price of the convertible 
security will rise above its investment value and, in addition, will sell at 
some premium over its conversion value. (This premium represents the price 
investors are willing to pay for the privilege of purchasing a fixed-income 
security with a possibility of capital appreciation due to the conversion 
privilege.) At such times the price of the convertible security will tend to 
fluctuate directly with the price of the underlying equity security. 
Convertible securities may be purchased by the Fund at varying price levels 
above their investment values and/or their conversion values in keeping with 
the Fund's objectives. 

   Warrants. The Fund may acquire warrants, including warrants which are 
attached to fixed-income securities purchased for its portfolio, and hold 
such warrants until the Investment Manager determines it is prudent to sell. 
Warrants are, in effect, an option to purchase equity securities at a 
specific price, generally valid for a specific period of time, and have no 
voting rights, pay no dividends and have no rights with respect to the 
corporations issuing them. 

   U.S. Government Securities. Securities issued by the U.S. Government, its 
agencies or instrumentalities in which the Fund may invest include: 

     (1) U.S. Treasury bills (maturities of one year of less), U.S. Treasury 
   notes (maturities of one to ten years) and U.S. Treasury bonds (generally 
   maturities of greater than ten years), all of which are direct obligations 
   of the U.S. Government and, as such, are backed by the "full faith and 
   credit" of the United States. 

     (2) Securities issued by agencies and instrumentalities of the U.S. 
   Government which are backed by the full faith and credit of the United 
   States. Among the agencies and instrumentalities issuing such obligations 
   are the Federal Housing Administration, the Government National Mortgage 
   Association ("GNMA"), the Department of Housing and Urban Development, the 
   Export-Import Bank, the Farmers Home Administration, the General Services 
   Administration, the Maritime Administration and the Small Business 
   Administration. The maturities of such obligations range from three months 
   to 30 years. 

   Neither the value nor the yield of the U.S. Government securities which 
may be invested in by the Fund are guaranteed by the U.S. Government. Such 
values and yield will fluctuate with changes in prevailing interest rates and 
other factors. Generally, as prevailing interest rates rise, the value of any 
U.S. Government securities held by the Fund will fall. Such securities with 
longer maturities generally tend to produce higher yields and are subject to 
greater market fluctuation as a result of changes in interest rates than debt 
securities with shorter maturities. 

   Zero Coupon Treasury Securities. A portion of the U.S. Government 
securities purchased by the Fund may be "zero coupon" Treasury securities. 
These are U.S. Treasury bills, notes and bonds which have been stripped of 
their unmatured interest coupons and receipts or which are certificates 
representing interests in such stripped debt obligations and coupons. Such 
securities are purchased at a discount from their face amount, giving the 
purchaser the right to receive their full value at maturity. A zero coupon 
security pays no interest to its holder during its life. Its value to an 
investor consists of the difference between its face value at the time of 
maturity and the price for which it was acquired, which is generally an 
amount significantly less than its face value (sometimes referred to as a 
"deep discount" price). The Fund intends to invest in such zero coupon 
treasury securities as STRIPS, Treasury Receipts, Physical Coupons, and 
Proprietary Receipts. However, the Fund does not intend, during the coming 
year, to invest in such securities in amounts totalling more than 5% of its 
total assets. 

   The interest earned on such securities is, implicitly, automatically 
compounded and paid out at maturity. While such compounding at a constant 
rate eliminates the risk of receiving lower yields upon reinvestment of 
interest if prevailing interest rates decline, the owner of a zero coupon 
security will be unable to participate in higher yields upon reinvestment of 
interest received if prevailing interest rates rise. For this reason, zero 
coupon securities are subject to substantially greater market price 
fluctuations during periods of changing prevailing interest rates than are 
comparable debt securities which make 

                                       13
<PAGE>

current distributions of interest. Current federal tax law requires that a 
holder (such as the Fund) of a zero coupon security accrue a portion of the 
discount at which the security was purchased as income each year even though 
the Fund receives no interest payments in cash on the security during the 
year. 

   Currently the only U.S. Treasury security issued without coupons is the 
Treasury bill. However, in the last few years a number of banks and brokerage 
firms have separated ("stripped") the principal portions from the coupon 
portions of the U.S. Treasury bonds and notes and sold them separately in the 
form of receipts or certificates representing undivided interests in these 
instruments (which instruments are generally held by a bank in custodial or 
trust account). 

   As stated in the Prospectus, the money market instruments which the Fund 
may purchase include U.S. and foreign government securities, bank 
obligations, Eurodollar certificates of deposit, obligations of savings 
institutions, fully insured certificates of deposit and commercial paper. 
Such securities are limited to: 

   U.S. and Foreign Government Securities. Obligations issued or guaranteed 
as to principal and interest by the United States or its agencies (such as 
the Export-Import Bank of the United States, Federal Housing Administration 
and Government National Mortgage Association) or its instrumentalities (such 
as the Federal Home Loan Bank), or by a foreign government, including U.S. 
and foreign Treasury bills, notes and bonds; 

   Bank Obligations. Obligations (including certificates of deposit and 
bankers' acceptances) of banks subject to regulation by the U.S. Government 
and having total assets of $1,000,000,000 or more, and instruments secured by 
such obligations, not including obligations of foreign branches of domestic 
banks except to the extent below; 

   Eurodollar Certificates of Deposit. Eurodollar certificates of deposit 
issued by foreign branches of domestic banks having total assets of 
$1,000,000,000 or more; 

   Obligations of Savings Institutions. Certificates of deposit of savings 
and loan associations, having total assets of $1,000,000,000 or more; 

   Fully Insured Certificates of Deposit. Certificates of deposit of banks 
and savings institutions, having total assets of less than $1,000,000,000, if 
the principal amount of the obligation is insured by the Federal Deposit 
Insurance Corporation, limited to $100,000 principal amount per certificate 
and to 10% or less of the Fund's total assets in all such obligations and in 
all illiquid assets, in the aggregate; 

   Commercial Paper. Commercial paper rated within the two highest grades by 
S&P or by Moody's or, if not rated, issued by a company having an outstanding 
debt issue rated at least AA by S&P or Aa by Moody's. 

FORWARD FOREIGN CURRENCY EXCHANGE CONTRACTS 

   As discussed in the Prospectus, the Fund may enter into forward foreign 
currency exchange contracts ("forward contracts") as a hedge against 
fluctuations in future foreign exchange rates. The Fund will conduct its 
foreign currency exchange transactions either on a spot (i.e., cash) basis at 
the spot rate prevailing in the foreign currency exchange market, or through 
entering into forward contracts to purchase or sell foreign currencies. A 
forward contract involves an obligation to purchase or sell a specific 
currency at a future date, which may be any fixed number of days from the 
date of the contract agreed upon by the parties, at a price set at the time 
of the contract. These contracts are traded in the interbank market conducted 
directly between currency traders (usually large, commercial banks) and their 
customers. Such forward contracts will only be entered into with United 
States banks and their foreign branches or foreign banks whose assets total 
$1 billion or more. A forward contract generally has no deposit requirement, 
and no commissions are charged at any stage for trades. 

   When the Investment Manager of the Fund believes that the currency of a 
particular foreign country may suffer a substantial movement against the U.S. 
dollar, it may enter into a forward contract to purchase or sell, for a fixed 
amount of dollars or other currency, the amount of foreign currency 
approximating the value of some or all of the Fund's portfolio securities 
denominated in such foreign 

                                       14
<PAGE>

currency. The Fund will also not enter into such forward contracts or 
maintain a net exposure to such contracts where the consummation of the 
contracts would obligate the Fund to deliver an amount of foreign currency in 
excess of the value of the Fund's portfolio securities or other assets 
denominated in that currency. Under normal circumstances, consideration of 
the prospect for currency parities will be incorporated into the longer term 
investment decisions made with regard to overall diversification strategies. 
However, the management of the Fund believes that it is important to have the 
flexibility to enter into such forward contracts when it determines that the 
best interests of the Fund will be served. The Fund's custodian bank will 
place cash, U.S. Government securities, or other appropriate liquid portfolio 
securities, in a segregated account of the Fund in an amount equal to the 
value of the Fund's total assets committed to the consummation of forward 
contracts entered into under the circumstances set forth above. If the value 
of the securities placed in the segregated account declines, additional cash 
or securities will be placed in the account on a daily basis so that the 
value of the account will equal the amount of the Fund's commitments with 
respect to such contracts. 

   Where, for example, the Fund is hedging a portfolio position consisting of 
foreign fixed-income securities denominated in a foreign currency against 
adverse exchange rate moves vis-a-vis the U.S. dollar, at the maturity of the 
forward contract for delivery by the Fund of a foreign currency, the Fund may 
either sell the portfolio security and make delivery of the foreign currency, 
or it may retain the security and terminate its contractual obligation to 
deliver the foreign currency by purchasing an "offsetting" contract with the 
same currency trader obligating it to purchase, on the same maturity date, 
the same amount of the foreign currency. It is impossible to forecast the 
market value of portfolio securities at the expiration of the contract. 
Accordingly, it may be necessary for the Fund to purchase additional foreign 
currency on the spot market (and bear the expense of such purchase) if the 
market value of the security is less than the amount of foreign currency the 
Fund is obligated to deliver and if a decision is made to sell the security 
and make delivery of the foreign currency. Conversely, it may be necessary to 
sell on the spot market some of the foreign currency received upon the sale 
of the portfolio securities if its market value exceeds the amount of foreign 
currency the Fund is obligated to deliver. 

   If the Fund retains the portfolio securities and engages in an offsetting 
transaction, the Fund will incur a gain or loss to the extent that there has 
been movement in spot or forward contract prices. If the Fund engages in an 
offsetting transaction, it may subsequently enter into a new forward contract 
to sell the foreign currency. Should forward prices decline during the period 
between the Fund's entering into a forward contract for the sale of a foreign 
currency and the date it enters into an offsetting contract for the purchase 
of the foreign currency, the Fund will realize a gain to the extent the price 
of the currency it has agreed to sell exceeds the price of the currency it 
has agreed to purchase. Should forward prices increase, the Fund will suffer 
a loss to the extent the price of the currency it has agreed to purchase 
exceeds the price of the currency it has agreed to sell. 

   If the Fund purchases a fixed-income security which is denominated in U.S. 
dollars but which will pay out its principal based upon a formula tied to the 
exchange rate between the U.S. dollar and a foreign currency, it may hedge 
against a decline in the principal value of the security by entering into a 
forward contract to sell an amount of the relevant foreign currency equal to 
some or all of the principal value of the security. 

   At times when the Fund has written a call option on a fixed-income 
security or the currency in which it is denominated, it may wish to enter 
into a forward contract to purchase or sell the foreign currency in which the 
security is denominated. A forward contract would, for example, hedge the 
risk of the security on which a call option has been written declining in 
value to a greater extent than the value of the premium received for the 
option. The Fund will maintain with its Custodian at all times, cash, U.S. 
Government securities and high grade debt obligations in a segregated account 
equal in value to all forward contract obligations and option contract 
obligations entered into in hedge situations such as this. 

   Although the Fund values its assets daily in terms of U.S. dollars, it 
does not intend to convert its holdings of foreign currencies into U.S. 
dollars on a daily basis. It will, however, do so from time to time, and 
investors should be aware of the costs of currency conversion. Although 
foreign exchange dealers 

                                       15
<PAGE>

do not charge a fee for conversion, they do realize a profit based on the 
spread between the prices at which they are buying and selling various 
currencies. Thus, a dealer may offer to sell a foreign currency to the Fund 
at one rate, while offering a lesser rate of exchange should the Fund desire 
to resell that currency to the dealer. 

OPTIONS AND FUTURES TRANSACTIONS 

   As discussed in the Prospectus, the Fund may write covered call options 
against securities held in its portfolio and purchase options of the same 
series to effect closing transactions, and may hedge against potential 
changes in the market value of its investments (or anticipated investments) 
by purchasing put and call options on portfolio (or eligible portfolio) 
securities (and the currencies in which they are denominated) and engaging in 
transactions involving futures contracts and options on such contracts. 

   Options on Foreign Currencies. The Fund may purchase and write options on 
foreign currencies for purposes similar to those involved with investing in 
forward foreign currency exchange contracts. For example, in order to protect 
against declines in the dollar value of portfolio securities which are 
denominated in a foreign currency, the Fund may purchase put options on an 
amount of such foreign currency equivalent to the current value of the 
portfolio securities involved. As a result, the Fund would be enabled to sell 
the foreign currency for a fixed amount of U.S. dollars, thereby "locking in" 
the dollar value of the portfolio securities (less the amount of the premiums 
paid for the options). Conversely, the Fund may purchase call options on 
foreign currencies in which securities it anticipates purchasing are 
denominated to secure a set U.S. dollar price for such securities and protect 
against a decline in the value of the U.S. dollar against such foreign 
currency. The Fund may also purchase call and put options to close out 
written option positions. 

   The Fund may also write call options on foreign currency to protect 
against potential declines in its portfolio securities which are denominated 
in foreign currencies. If the U.S. dollar value of the portfolio securities 
falls as a result of a decline in the exchange rate between the foreign 
currency in which it is denominated and the U.S. dollar, then a loss to the 
Fund occasioned by such value decline would be ameliorated by receipt of the 
premium on the option sold. At the same time, however, the Fund gives up the 
benefit of any rise in value of the relevant portfolio securities above the 
exercise price of the option and, in fact, only receives a benefit from the 
writing of the option to the extent that the value of the portfolio 
securities falls below the price of the premium received. The Fund may also 
write options to close out long call option positions. 

   The markets in foreign currency options are relatively new and the Fund's 
ability to establish and close out positions on such options is subject to 
the maintenance of a liquid secondary market. Although the Fund will not 
purchase or write such options unless and until, in the opinion of the 
management of the Fund, the market for them has developed sufficiently to 
ensure that the risks in connection with such options are not greater than 
the risks in connection with the underlying currency, there can be no 
assurance that a liquid secondary market will exist for a particular option 
at any specific time. In addition, options on foreign currencies are affected 
by all of those factors which influence foreign exchange rates and 
investments generally. 

   The value of a foreign currency option depends upon the value of the 
underlying currency relative to the U.S. dollar. As a result, the price of 
the option position may vary with changes in the value of either or both 
currencies and have no relationship to the investment merits of a foreign 
security, including foreign securities held in a "hedged" investment 
portfolio. Because foreign currency transactions occurring in the interbank 
market involve substantially larger amounts than those that may be involved 
in the use of foreign currency options, investors may be disadvantaged by 
having to deal in an odd lot market (generally consisting of transactions of 
less than $1 million) for the underlying foreign currencies at prices that 
are less favorable than for round lots. 

   There is no systematic reporting of last sale information for foreign 
currencies or any regulatory requirement that quotations available through 
dealers or other market sources be firm or revised on a timely basis. 
Quotation information available is generally representative of very large 
transactions in the 

                                       16
<PAGE>

interbank market and thus may not reflect relatively smaller transactions 
(i.e., less than $1 million) where rates may be less favorable. The interbank 
market in foreign currencies is a global, around-the-clock market. To the 
extent that the U.S. options markets are closed while the markets for the 
underlying currencies remain open, significant price and rate movements may 
take place in the underlying markets that are not reflected in the options 
market. 

   Covered Call Writing. As stated in the Prospectus, the Fund is permitted 
to write covered call options on portfolio securities and on the U.S. Dollar 
and foreign currencies, without limit, in order to aid in achieving its 
investment objectives. Generally, a call option is "covered" if the Fund 
owns, or has the right to acquire, without additional cash consideration (or 
for additional cash consideration held for the Fund by its Custodian in a 
segregated account) the underlying security (currency) subject to the option 
except that in the case of call options on U.S. Treasury Bills, the Fund 
might own U.S. Treasury Bills of a different series from those underlying the 
call option, but with a principal amount and value corresponding to the 
exercise price and a maturity date no later than that of the security 
(currency) deliverable under the call option. A call option is also covered 
if the Fund holds a call on the same security as the underlying security 
(currency) of the written option, where the exercise price of the call used 
for coverage is equal to or less than the exercise price of the call written 
or greater than the exercise price of the call written if the mark to market 
difference is maintained by the Fund in cash, U.S. Government securities, or 
other liquid portfolio securities, which the Fund holds in a segregated 
account maintained with its Custodian. 

   The Fund will receive from the purchaser, in return for a call it has 
written, a "premium"; i.e., the price of the option. Receipt of these 
premiums may better enable the Fund to earn a higher level of current income 
than it would earn from holding the underlying securities (currencies) alone. 
Moreover, the premium received will offset a portion of the potential loss 
incurred by the Fund if the securities (currencies) underlying the option are 
ultimately sold (exchanged) by the Fund at a loss. The premium received will 
fluctuate with varying economic market conditions. If the market value of the 
portfolio securities (or the currencies in which they are denominated) upon 
which call options have been written increases, the Fund may receive a lower 
total return from the portion of its portfolio upon which calls have been 
written than it would have had such calls not been written. 

   As regards listed options and certain over-the-counter ("OTC") options, 
during the option period, the Fund may be required, at any time, to deliver 
the underlying security (currency) against payment of the exercise price on 
any calls it has written (exercise of certain listed and OTC options may be 
limited to specific expiration dates). This obligation is terminated upon the 
expiration of the option period or at such earlier time when the writer 
effects a closing purchase transaction. A closing purchase transaction is 
accomplished by purchasing an option of the same series as the option 
previously written. However, once the Fund has been assigned an exercise 
notice, the Fund will be unable to effect a closing purchase transaction. 

   Closing purchase transactions are ordinarily effected to realize a profit 
on an outstanding call option, to prevent an underlying security (currency) 
from being called, to permit the sale of an underlying security (or the 
exchange of the underlying currency) or to enable the Fund to write another 
call option on the underlying security (currency) with either a different 
exercise price or expiration date or both. The Fund may realize a net gain or 
loss from a closing purchase transaction depending upon whether the amount of 
the premium received on the call option is more or less than the cost of 
effecting the closing purchase transaction. Any loss incurred in a closing 
purchase transaction may be wholly or partially offset by unrealized 
appreciation in the market value of the underlying security (currency). 
Conversely, a gain resulting from a closing purchase transaction could be 
offset in whole or in part or exceeded by a decline in the market value of 
the underlying security (currency). 

   If a call option expires unexercised, the Fund realizes a gain in the 
amount of the premium on the option less the commission paid. Such a gain, 
however, may be offset by depreciation in the market value of the underlying 
security (currency) during the option period. If a call option is exercised, 
the Fund realizes a gain or loss from the sale of the underlying security 
(currency) equal to the difference between the purchase price of the 
underlying security (currency) and the proceeds of the sale of the security 
(currency) plus the premium received for the option less the commission paid. 

                                       17
<PAGE>

   Options written by the Fund will normally have expiration dates of up to 
eighteen months from the date written. The exercise price of a call option 
may be below, equal to or above the current market value of the underlying 
security at the time the option is written. See "Risks of Options 
Transactions," below. 

   Purchasing Call and Put Options. As stated in the Prospectus, the Fund may 
purchase listed and OTC call and put options in amounts equalling up to 5% of 
its total assets. The Fund may purchase a call option in order to close out a 
covered call position (see "Covered Call Writing" above), to protect against 
an increase in price of a security it anticipates purchasing or, in the case 
of a call option on foreign currency, to hedge against an adverse exchange 
rate move of the currency in which the security it anticipates purchasing is 
denominated vis-a-vis the currency in which the exercise price is 
denominated. The purchase of the call option to effect a closing transaction 
on a call written over-the-counter may be a listed or an OTC option. In 
either case, the call purchased is likely to be on the same securities 
(currencies) and have the same terms as the written option. If purchased 
over-the-counter, the option would generally be acquired from the dealer or 
financial insitution which purchased the call written by the Fund. 

   The Fund may purchase put options on securities (currencies) which it 
holds in its portfolio only to protect itself against a decline in the value 
of the security. If the value of the underlying security (currency) were to 
fall below the exercise price of the put purchased in an amount greater than 
the premium paid for the option, the Fund would incur no additional loss. In 
addition, the Fund may sell a put option which it has previously purchased 
prior to the sale of the securities (currencies) underlying such option. Such 
a sale would result in a net gain or loss depending on whether the amount 
received on the sale is more or less than the premium and other transaction 
costs paid on the put option which is sold. And such gain or loss could be 
offset in whole or in part by a change in the market value of the underlying 
security (currency). If a put option purchased by the Fund expired without 
being sold or exercised, the premium would be lost. 

   Risks of Options Transactions. During the option period, the covered call 
writer has, in return for the premium on the option, given up the opportunity 
for capital appreciation above the exercise price should the market price of 
the underlying security (or the value of its denominated currency) increase, 
but has retained the risk of loss should the price of the underlying security 
(or the value of its denominated currency) decline. The writer has no control 
over the time when it may be required to fulfill its obligation as a writer 
of the option. Once an option writer has received an exercise notice, it 
cannot effect a closing purchase transaction in order to terminate its 
obligation under the option and must deliver or receive the underlying 
securities at the exercise price. 

   Prior to exercise or expiration, an option position can only be terminated 
by entering into a closing purchase or sale transaction. If a covered call 
option writer is unable to effect a closing purchase transaction or to 
purchase an offsetting OTC option, it cannot sell the underlying security 
until the option expires or the option is exercised. Accordingly, a covered 
call option writer may not be able to sell an underlying security at a time 
when it might otherwise be advantageous to do so. 

   As discussed in the Prospectus, the Fund's ability to close out its 
position as a writer of an option is dependent upon the existence of a liquid 
secondary market on Option Exchanges. There is no assurance that such a 
market will exist, particularly in the case of OTC options, as such options 
will generally only be closed out by entering into a closing purchase 
transaction with the purchasing dealer. However, the Fund may be able to 
purchase an offsetting option which does not close out its position as a 
writer but constitutes an asset of equal value to the obligation under the 
option written. If the Fund is not able to either enter into a closing 
purchase transaction or purchase an offsetting position, it will be required 
to maintain the securities subject to the call, or the collateral underlying 
the put, even though it might not be advantageous to do so, until a closing 
transaction can be entered into (or the option is exercised or expires). 

   Among the possible reasons for the absence of a liquid secondary market on 
an Exchange are: (i) insufficient trading interest in certain options; (ii) 
restrictions on transactions imposed by an Exchange; (iii) trading halts, 
suspensions or other restrictions imposed with respect to particular classes 
or series of options or underlying securities; (iv) interruption of the 
normal operations on an Exchange; (v) 

                                       18
<PAGE>

inadequacy of the facilities of an Exchange or the Options Clearing 
Corporation ("OCC") to handle current trading volume; or (vi) a decision by 
one or more Exchanges to discontinue the trading of options (or a particular 
class or series of options), in which event the secondary market on that 
Exchange (or in that class or series of options) would cease to exist, 
although outstanding options on that Exchange that had been issued by the OCC 
as a result of trades on that Exchange would generally continue to be 
exercisable in accordance with their terms. 

   In the event of the bankruptcy of a broker through which the Fund engages 
in transactions in options, the Fund could experience delays and/or losses in 
liquidating open positions purchased or sold through the broker and/or incur 
a loss of all or part of its margin deposits with the broker. Similarly, in 
the event of the bankruptcy of the writer of an OTC option purchased by the 
Fund, the Fund could experience a loss of all or part of the value of the 
option. Transactions are entered into by the Fund only with brokers or 
financial institutions deemed creditworthy by the Fund's Investment Manager. 

   Each of the Exchanges has established limitations governing the maximum 
number of options on the same underlying security or futures contract 
(whether or not covered) which may be written by a single investor, whether 
acting alone or in concert with others (regardless of whether such options 
are written on the same or different Exchanges or are held or written on one 
or more accounts or through one or more brokers). An Exchange may order the 
liquidation of positions found to be in violation of these limits and it may 
impose other sanctions or restrictions. These position limits may restrict 
the number of listed options which the Fund may write. 

   The hours of trading for options may not conform to the hours during which 
the underlying securities are traded. To the extent that the option markets 
close before the markets for the underlying securities, significant price and 
rate movements can take place in the underlying markets that cannot be 
reflected in the option markets. 

   Futures Contracts. As stated in the Prospectus, the Fund may purchase and 
sell interest rate, currency, and index futures contracts ("futures 
contracts"), that are traded on U.S. and foreign commodity exchanges, on such 
underlying securities as U.S. Treasury bonds, notes and bills and/or any 
foreign government fixed-income security ("interest rate" futures), on 
various currencies ("currency futures") and on such indexes of U.S. and 
foreign securities as may exist or come into being ("index" futures). 

   Although most interest rate futures contracts call for actual delivery or 
acceptance of securities, the contracts usually are closed out before the 
settlement date without the making or taking of delivery. A futures contract 
sale is closed out by effecting a futures contract purchase for the same 
aggregate amount of the specific type of security (currency) and the same 
delivery date. If the sale price exceeds the offsetting purchase price, the 
seller would be paid the difference and would realize a gain. If the 
offsetting purchase price exceeds the sale price, the seller would pay the 
difference and would realize a loss. Similarly, a futures contract purchase 
is closed out by effecting a futures contract sale for the same aggregate 
amount of the specific type of security (currency) and the same delivery 
date. If the offsetting sale price exceeds the purchase price, the purchaser 
would realize a gain, whereas if the purchase price exceeds the offsetting 
sale price, the purchaser would realize a loss. There is no assurance that 
the Fund will be able to enter into a closing transaction. 

   Limitations on Futures Contracts and Options on Futures. The Fund may not 
enter into futures contracts or purchase related options thereon if, 
immediately thereafter, the amount committed to margin plus the amount paid 
for premiums for unexpired options on futures contracts exceeds 5% of the 
value of the Fund's total assets, after taking into account unrealized gains 
and unrealized losses on such con-tracts it has entered into, provided, 
however, that in the case of an option that is in-the-money (the exercise 
price of the call (put) option is less (more) than the market price of the 
underlying security) at the time of purchase, the in-the-money amount may be 
excluded in calculating the 5%. However, there is no overall limitation on 
the percentage of the Fund's assets which may be subject to a hedge position. 
In addition, in accordance with the regulations of the Commodity Futures 
Trading Commission ("CFTC") under which the Fund is exempted from 
registration as a commodity pool operator, the Fund may only enter into 
futures contracts and options on futures contracts transactions for purposes 
of hedging a part 

                                       19
<PAGE>

or all of its portfolio. If the CFTC changes its regulations so that the Fund 
would be permitted to write options on futures contracts for purposes other 
than hedging the Fund's investments without CFTC registration, the Fund may 
engage in such transactions for those purposes. Except as described above, 
there are no other limitations on the use of futures and options thereon by 
the Fund. 

   Interest Rate Futures Contracts. When the Fund enters into an interest 
rate futures contract, it is initially required to deposit with the Fund's 
Custodian, in a segregated account in the name of the broker performing the 
transaction, an "initial margin" of cash or U.S. Government securities or 
other liquid portfolio securities equal to approximately 3% of the contract 
amount. Initial margin requirements are established by the Exchanges on which 
futures contracts trade and may, from time to time, change. In addition, 
brokers may establish margin deposit requirements in excess of those required 
by the Exchanges. 

   Initial margin in futures transactions is different from margin in 
securities transactions in that initial margin does not involve the borrowing 
of funds by a brokers' client but is, rather, a good faith deposit on the 
futures contract which will be returned to the Fund upon the proper 
termination of the futures contract. The margin deposits made are marked to 
market daily and the Fund may be required to make subsequent deposits of cash 
or U.S. Government securities called "variation margin," with the Fund's 
futures contract clearing broker, which are reflective of price fluctuations 
in the futures contract. Currently, interest rate futures contracts can be 
purchased on debt securities such as U.S. Treasury Bills and Bonds, U.S. 
Treasury Notes with Maturities between 6 1/2 and 10 years, GNMA Certificates, 
and Bank Certificates of Deposit. 

   Currency Futures. Generally, foreign currency futures provide for the 
delivery of a specified amount of a given currency, on the exercise date, for 
a set exercise price denominated in U.S. dollars or other currency. Foreign 
currency futures contracts would be entered into for the same reason and 
under the same circumstances as forward foreign currency exchange contracts. 
The Investment Manager will assess such factors as cost spreads, liquidity 
and transaction costs in determining whether to utilize futures contracts or 
forward contracts in its foreign currency transactions and hedging strategy. 
Currently, currency futures exist for, among other foreign currencies, the 
Japanese yen, German marks, Canadian dollars, British pound, Swiss franc, and 
European currency unit. 

   Purchasers and sellers of foreign currency futures contracts are subject 
to the same risks that apply to the buying and selling of futures generally. 
In addition, there are risks associated with foreign currency futures 
contracts and their use as a hedging device similar to those associated with 
options on foreign currencies described above. Further, settlement of a 
foreign currency futures contract must occur within the country issuing the 
underlying currency. Thus, the Fund must accept or make delivery of the 
underlying foreign currency in accordance with any U.S. or foreign 
restrictions or regulation regarding the maintenance of foreign banking 
arrangements by U.S. residents and may be required to pay any fees, taxes or 
charges associated with such delivery which are assessed in the issuing 
country. 

   Options on foreign currency futures contracts may involve certain 
additional risks. Trading options on foreign currency futures contracts is 
relatively new. The ability to establish and close out positions on such 
options is subject to the maintenance of a liquid secondary market. To reduce 
this risk, the Fund will not purchase or write options on foreign currency 
futures contracts unless and until, in the Investment Manager's opinion, the 
market for such options has developed sufficiently that the risks in 
connection with such options are not greater than the risks in connection 
with transactions in the underlying foreign currency futures contracts. 

   Index Futures Contracts. As discussed in the Prospectus, the Fund may 
invest in index futures contracts. An index futures contract sale creates an 
obligation by the Fund, as seller, to deliver cash at a specified future 
time. An index futures contract purchase would create an obligation by the 
Fund, as purchaser, to take delivery of cash at a specified future time. 
Futures contracts on indexes do not require the physical delivery of 
securities, but provide for a final cash settlement on the expiration date 
which reflects accumulated profits and losses credited or debited to each 
party's account. 

   The Fund is required to maintain margin deposits with brokerage firms 
through which it effects index futures contracts in a manner similar to that 
described above for interest rate futures contracts. Currently, 

                                       20
<PAGE>

the initial margin requirements range from 3% to 10% of the contract amount 
for index futures. In addition, due to current industry practice, daily 
variations in gains and losses on open contracts are required to be reflected 
in cash in the form of variation margin payments. The Fund may be required to 
make additional margin payments during the term of the contract. 

   At any time prior to expiration of the futures contract, the Fund may 
elect to close the position by taking an opposite position which will operate 
to terminate the Fund's position in the futures contract. A final 
determination of variation margin is then made, additional cash is required 
to be paid by or released to the Fund and the Fund realizes a loss or gain. 

   Options on Futures Contracts. 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 on a futures contract are included in 
initial margin deposits. 

   Risks of Transactions in Futures Contracts and Related Options. As stated 
in the Prospectus, the Fund may sell a futures contract to protect against 
the decline in the value of securities (or the currency in which they are 
denominated) held by the Fund. However, it is possible that the futures 
market may advance and the value of securities (or the currency in which they 
are denominated) held in the portfolio of the Fund may decline. If this 
occurred, the Fund would lose money on the futures contract and also 
experience a decline in value of its portfolio securities. However, while 
this could occur for a very brief period or to a very small degree, over time 
the value of a diversified portfolio will tend to move in the same direction 
as the futures contracts. 

   If the Fund purchases a futures contract to hedge against the increase in 
value of securities it intends to buy (or the currency in which they are 
denominated), and the value of such securities (currencies) decreases, then 
the Fund may determine not to invest in the securities as planned and will 
realize a loss on the futures contract that is not offset by a reduction in 
the price of the securities. 

   In order to assure that the Fund is entering into transactions in futures 
contracts for hedging purposes as such is defined by the Commodity Futures 
Trading Commission either: 1) a substantial majority (i.e., approximately 
75%) of all anticipatory hedge transactions (transactions in which the Fund 
does not own at the time of the transaction, but expects to acquire, the 
securities underlying the relevant futures contract) involving the purchase 
of futures contracts will be completed by the purchase of securities which 
are the subject of the hedge or 2) the underlying value of all long positions 
in futures contracts will not exceed the total value of a) all short-term 
debt obligations held by the Fund; b) cash held by the Fund; c) cash proceeds 
due to the Fund on investments within thirty days; d) the margin deposited on 
the contracts; and e) any unrealized appreciation in the value of the 
contracts. 

   If the Fund has sold a call option in a futures contract, it will cover 
this position by holding, in a segregated account maintained at its 
Custodian, cash, U.S. Government securities or other liquid portfolio 
securities equal in value (when added to any initial or variation margin on 
deposit) to the market value of the securities (currencies) underlying the 
futures contract or the exercise price of the option. Such a position may 
also be covered by owning the securities (currencies) underlying the futures 
contract, or by holding a call option permitting the Fund to purchase the 
same contract at a price no higher than the price at which the short position 
was established. 

   In addition, if the Fund holds a long position in a futures contract it 
will hold cash, U.S. Government securities or other liquid portfolio 
securities equal to the purchase price of the contract (less the amount of 
initial or variation margin on deposit) in a segregated account maintained 
for the Fund by its Custodian. Alternatively, the Fund could cover its long 
position by purchasing a put option on the same futures contract with an 
exercise price as high or higher than the price of the contract held by the 
Fund. 

   Exchanges limit the amount by which the price of a futures contract may 
move on any day. If the price moves equal the daily limit on successive days, 
then it may prove impossible to liquidate a futures position until the daily 
limit moves have ceased. In the event of adverse price movements, the Fund 
would continue to be required to make daily cash payments of variation margin 
on open futures positions. In such situations, if the Fund has insufficient 
cash, it may have to sell portfolio securities to meet daily 

                                       21
<PAGE>

variation margin requirements at a time when it may be disadvantageous to do 
so. In addition, the Fund may be required to take or make delivery of the 
instruments underlying interest rate futures contracts it holds at a time 
when it is disadvantageous to do so. The inability to close out options and 
futures positions could also have an adverse impact on the Fund's ability to 
effectively hedge its portfolio. 

   Futures contracts and options thereon which are purchased or sold on 
foreign commodities exchanges may have greater price volatility than their 
U.S. counterparts. Furthermore, foreign commodities exchanges may be less 
regulated and under less governmental scrutiny than U.S. exchanges. Brokerage 
commissions, clearing costs and other transaction costs may be higher on 
foreign exchanges. Greater margin requirements may limit the Fund's ability 
to enter into certain commodity transactions on foreign exchanges. Moreover, 
differences in clearance and delivery requirements on foreign exchanges may 
occasion delays in the settlement of the Fund's transactions effected on 
foreign exchanges. 

   In the event of the bankruptcy of a broker through which the Fund engages 
in transactions in futures or options thereon, the Fund could experience 
delays and/or losses in liquidating open positions purchased or sold through 
the broker and/or incur a loss of all or part of its margin deposits with the 
broker. Similarly, in the event of the bankruptcy of the writer of an OTC 
option purchased by the Fund, the Fund could experience a loss of all or part 
of the value of the option. Transactions are entered into by the Fund only 
with brokers or financial institutions deemed creditworthy by the Investment 
Manager. 

   While the futures contracts and options transactions to be engaged in by 
the Fund for the purpose of hedging the Fund's portfolio securities are not 
speculative in nature, there are risks inherent in the use of such 
instruments. One such risk which may arise in employing futures contracts to 
protect against the price volatility of portfolio securities (and the 
currencies in which they are denominated) is that the prices of securities 
and indexes subject to futures contracts (and thereby the futures contract 
prices) may correlate imperfectly with the behavior of the cash prices of the 
Fund's portfolio securities (and the currencies in which they are 
denominated). Another such risk is that prices of interest rate futures 
contracts may not move in tandem with the changes in prevailing interest 
rates against which the Fund seeks a hedge. A correlation may also be 
distorted by the fact that the futures market is dominated by short-term 
traders seeking to profit from the difference between a contract or security 
price objective and their cost of borrowed funds. Such distortions are 
generally minor and would diminish as the contract approached maturity. 

   As stated in the Prospectus, there may exist an imperfect correlation 
between the price movements of futures contracts purchased by the Fund and 
the movements in the prices of the securities (currencies) which are the 
subject of the hedge. If participants in the futures market elect to close 
out their contracts through offsetting transactions rather than meet margin 
deposit requirements, distortions in the normal relationship between the debt 
securities or currency markets and futures markets could result. Price 
distortions could also result if investors in futures contracts opt to make 
or take delivery of underlying securities rather than engage in closing 
transactions due to the resultant reduction in the liquidity of the futures 
market. In addition, due to the fact that, from the point of view of 
speculators, the deposit requirements in the futures markets are less onerous 
than margin requirements in the cash market, increased participation by 
speculators in the futures market could cause temporary price distortions. 
Due to the possibility of price distortions in the futures market and because 
of the imperfect correlation between movements in the prices of securities 
and movements in the prices of futures contracts, a correct forecast of 
interest rate trends may still not result in a successful hedging 
transaction. 

   As stated in the Prospectus, there is no assurance that a liquid secondary 
market will exist for futures contracts and related options in which the Fund 
may invest. In the event a liquid market does not exist, it may not be 
possible to close out a futures position, and in the event of adverse price 
movements, the Fund would continue to be required to make daily cash payments 
of variation margin. In addition, limitations imposed by an exchange or board 
of trade on which futures contracts are traded may compel or prevent the Fund 
from closing out a contract which may result in reduced gain or increased 
loss to the Fund. The absence of a liquid market in futures contracts might 
cause the Fund to make or take delivery of the underlying securities 
(currencies) at a time when it may be disadvantageous to do so. 

                                       22
<PAGE>

   Compared to the purchase or sale of futures contracts, the purchase of 
call or put options on futures contracts involves less potential risk to the 
Fund because the maximum amount at risk is the premium paid for the options 
(plus transaction costs). However, there may be circumstances when the 
purchase of a call or put option on a futures contract would result in a loss 
to the Fund notwithstanding that the purchase or sale of a futures contract 
would not result in a loss, as in the instance where there is no movement in 
the prices of the futures contract or underlying securities (currencies). 

OTHER INVESTMENT POLICIES 

   Repurchase Agreements. When cash may be available for only a few days, it 
may be invested by the Fund in repurchase agreements until such time as it 
may otherwise be invested or used for payments of obligations of the Fund. A 
repurchase agreement may be viewed as a type of secured lending by the Fund 
which typically involves the acquisition by the Fund of government securities 
from a selling financial institution such as a bank, savings and loan 
association or broker-dealer. The agreement provides that the Fund will sell 
back to the institution, and that the institution will repurchase, the 
underlying security ("collateral") at a specified price and at a fixed time 
in the future, usually not more than seven days from the date of purchase. 
The collateral will be maintained in a segregated account and will be 
marked-to-market daily to determine that the full value of the collateral, as 
specified in the agreement, is always at least equal to the purchase price 
plus accrued interest. If required, additional collateral will be requested 
and, when received, added to the account to maintain full collateralization. 
In the event the original seller defaults on its obligations to repurchase, 
as a result of its bankruptcy or otherwise, the Fund will seek to sell the 
collateral, which action could involve costs or delays. In such case, the 
Fund's ability to dispose of the collateral to recover its investment may be 
restricted or delayed. 

   The Fund will accrue interest from the institution until the time when the 
repurchase is to occur. Although such date is deemed by the Fund to be the 
maturity date of a repurchase agreement, the maturities of securities subject 
to repurchase agreements are not subject to any limits and may exceed one 
year. 

   While repurchase agreements involve certain risks not associated with 
direct investments in debt securities, the Fund follows procedures designed 
to minimize such risks. Repurchase agreements will be transacted only with 
large, well-capitalized and well-established financial institutions whose 
financial condition will be continuously monitored by the management of the 
Fund subject to procedures established by the Trustees. The procedures also 
require that the collateral underlying the agreement be specified. The Fund 
does not presently intend to enter into repurchase agreements so that more 
than 5% of the Fund's net assets are subject to such agreements. 

   Reverse Repurchase Agreements. The Fund may also use reverse repurchase 
agreements for purposes of meeting redemptions or as part of its investment 
strategy. Reverse repurchase agreements involve sales by the Fund of 
portfolio assets concurrently with an agreement by the Fund to repurchase the 
same assets at a later date at a fixed price. Generally, the effect of such a 
transaction is that the Fund can recover all or most of the cash invested in 
the portfolio securities involved during the term of the reverse repurchase 
agreement, while it will be able to keep the interest income associated with 
those portfolio securities. Such transactions are only advantageous if the 
interest cost to the Fund of the reverse repurchase transaction is less than 
the cost of obtaining the cash otherwise. Opportunities to achieve this 
advantage may not always be available, and the Fund intends to use the 
reverse repurchase technique only when it will be to its advantage to do so. 
The Fund will establish a segregated account with its custodian bank in which 
it will maintain cash or cash equivalents or other liquid portfolio 
securities (i.e., U.S. Government securities) equal in value to its 
obligations in respect of reverse repurchase agreements. Reverse repurchase 
agreements are considered borrowings by the Fund and, in accordance with 
legal requirements, the Fund will maintain an asset coverage (including the 
proceeds) of at least 300% with respect to all reverse repurchase agreements. 
Reverse repurchase agreements may not exceed 10% of the Fund's total assets. 
The Fund does not intend to enter into any reverse repurchase agreements 
during the coming year. 

   When-Issued and Delayed Delivery Securities and Forward Commitments. As 
discussed in the Prospectus, from time to time, in the ordinary course of 
business, the Fund may purchase securities on 

                                       23
<PAGE>

a when-issued or delayed delivery basis and may purchase or sell securities 
on a forward commitment basis. When such transactions are negotiated, the 
price is fixed at the time of the commitment, but delivery and payment can 
take place a month or more after the date of the commitment. The securities 
so purchased are subject to market fluctuation and no interest accrues to the 
purchaser during this period. While the Fund will only purchase securities on 
a when-issued, delayed delivery or forward commitment basis with the 
intention of acquiring the securities, the Fund may sell the securities 
before the settlement date, if it is deemed advisable. At the time the Fund 
makes the commitment to purchase securities on a when-issued or delayed 
delivery basis, the Fund will record the transaction and thereafter reflect 
the value, each day, of such security in determining the net asset value of 
the Fund. At the time of delivery of the securities, the value may be more or 
less than the purchase price. The Fund will also establish a segregated 
account with the Fund's custodian bank in which it will continuously maintain 
cash or U.S. Government securities or other liquid portfolio securities equal 
in value to commitments for such when-issued or delayed delivery securities. 
Subject to this requirement, the Fund may purchase securities on such basis 
without limit. An increase in the percentage of the Fund's assets committed 
to the purchase of securities on a when-issued or delayed delivery basis may 
increase the volatility of the Fund's net asset value. The Fund's Investment 
Manager and the Trustees do not believe that the Fund's net asset value or 
income will be adversely affected by its purchase of securities on such 
basis. 

   When, As and If Issued Securities. As discussed in the Prospectus, the 
Fund may purchase securities on a "when, as and if issued" basis under which 
the issuance of the security depends upon the occurrence of a subsequent 
event, such as approval of a merger, corporate reorganization, leveraged 
buyout or debt restructuring. The commitment for the purchase of any such 
security will not be recognized in the portfolio of the Fund until the 
Investment Manager determines that issuance of the security is probable. At 
such time, the Fund will record the transaction and, in determining its net 
asset value, will reflect the value of the security daily. At such time, the 
Fund will also establish a segregated account with its custodian bank in 
which it will continuously maintain cash or U.S. Government securities or 
other liquid portfolio securities equal in value to recognized commitments 
for such securities. Settlement of the trade will occur within five business 
days of the occurrence of the subsequent event. The value of the Fund's 
commitments to purchase the securities of any one issuer, together with the 
value of all securities of such issuer owned by the Fund, may not exceed 5% 
of the value of the Fund's total assets at the time the initial commitment to 
purchase such securities is made (see "Investment Restrictions"). Subject to 
the foregoing restrictions, the Fund may purchase securities on such basis 
without limit. An increase in the percentage of the Fund's assets committed 
to the purchase of securities on a "when, as and if issued" basis may 
increase the volatility of its net asset value. The Fund's Investment Manager 
and the Trustees do not believe that the net asset value of the Fund will be 
adversely affected by its purchase of securities on such basis. The Fund may 
also sell securities on a "when, as and if issued" basis provided that the 
issuance of the security will result automatically from the exchange or 
conversion of a security owned by the Fund at the time of the sale. 

   Lending of Portfolio Securities. Consistent with applicable regulatory 
requirements, the Fund may lend its portfolio securities to brokers, dealers 
and other financial institutions, provided that such loans are callable at 
any time by the Fund (subject to notice provisions described below), and are 
at all times secured by cash or appropriate high-grade debt obligations, 
which are maintained in a segregated account pursuant to applicable 
regulations and that are at least equal to the market value, determined 
daily, of the loaned securities. The advantage of such loans is that the Fund 
continues to receive the income on the loaned securities while at the same 
time earning interest on the cash amounts deposited as collateral, which will 
be invested in short-term obligations. The Fund will not lend its portfolio 
securities if such loans are not permitted by the laws or regulations of any 
state in which its shares are qualified for sale and will not lend more than 
25% of the value of its total assets. A loan may be terminated by the 
borrower on one business days' notice, or by the Fund on two business days' 
notice. If the borrower fails to deliver the loaned securities within two 
days after receipt of notice, the Fund could use the collateral to replace 
the securities while holding the borrower liable for any excess of 
replacement cost over collateral. As with any extensions of credit, there are 
risks of delay in recovery and in some cases even loss of rights in the 
collateral should the borrower of the securities fail financially. However, 
these loans of portfolio securities will only be made to firms deemed by the 
Fund's management to be creditworthy 

                                       24
<PAGE>

and when the income which can be earned from such loans justifies the 
attendant risks. Upon termination of the loan, the borrower is required to 
return the securities to the Fund. Any gain or loss in the market price 
during the loan period would inure to the Fund. The creditworthiness of firms 
to which the Fund lends its portfolio securities will be monitored on an 
ongoing basis by the Fund's management pursuant to procedures adopted and 
reviewed, on an ongoing basis, by the Board of Trustees of the Fund. 

   When voting or consent rights which accompany loaned securities pass to 
the borrower, the Fund will follow the policy of calling the loaned 
securities, to be delivered within one day after notice, to permit the 
exercise of such rights if the matters involved would have a material effect 
on the Fund's investment in such loaned securities. The Fund will pay 
reasonable finder's, administrative and custodial fees in connection with a 
loan of its securities. The Fund does not presently intend to lend any of its 
portfolio securities. 

   Short Sales "against-the-box." A short sale is a transaction in which the 
Fund sells a security it does not own in anticipation of a decline in market 
price. The Fund will not sell short unless it is "against the box," which 
means that at all times when the short position is open, the Fund owns an 
equal amount of securities or securities convertible into, or exchangeable 
without further consideration, for securities sold short. Short sales against 
the box may be used to defer recognition of capital gains or losses for 
certain federal income tax purposes. The Fund does not intend to enter into 
short sales against the box during the coming year. 

PORTFOLIO TURNOVER 

   The Fund's portfolio turnover rate for the fiscal year ended July 31, 1996 
was 63.06%. A 100% turnover rate would occur, for example, if 100% of the 
securities held in the Fund's portfolio (excluding all securities whose 
maturities at acquisition were one year or less) were sold and replaced 
within one year. 

INVESTMENT RESTRICTIONS 
- ----------------------------------------------------------------------------- 

   In addition to the investment restrictions enumerated in the Prospectus, 
the investment restrictions listed below have been adopted by the Fund as 
fundamental policies, except as otherwise indicated. Under the Act, a 
fundamental policy may not be changed without the vote of a majority of the 
outstanding voting securities of the Fund, as defined in the Act. Such a 
majority is defined as the lesser of (a) 67% or more of the shares present at 
a meeting of shareholders, if the holders of 50% of the outstanding shares of 
the Fund are present or represented by proxy or (b) more than 50% of the 
outstanding shares of the Fund. 

   The Fund may not: 

     1. Purchase or sell real estate or interests therein, although the Fund 
   may purchase securities of issuers which engage in real estate operations 
   and securities secured by real estate or interests therein. 

     2. Purchase oil, gas or other mineral leases, rights or royalty 
   contracts or exploration or development programs, except that the Fund may 
   invest in the securities of companies which operate, invest in, or sponsor 
   such programs. 

     3. Purchase securities of other investment companies, except in 
   connection with a merger, consolidation, reorganization or acquisition of 
   assets or, in the case of a closed-end company, in accordance with the 
   provisions of Section 12(d) of the Act and any Rules promulgated 
   thereunder. 

     4. Borrow money (except insofar as to the Fund may be deemed to have 
   borrowed by entrance into a reverse repurchase agreement up to an amount 
   not exceeding 10% of the Fund's total assets), except that the Fund may 
   borrow from a bank for temporary or emergency purposes in amounts not 
   exceeding 5% (taken at the lower of cost or current value) of its total 
   assets (not including the amount borrowed). 

                                       25
<PAGE>

     5. Issue senior securities as defined in the Act except insofar as the 
   Fund may be deemed to have issued a senior security by reason of (a) 
   entering into any repurchase or reverse repurchase agreement; (b) 
   purchasing any securities on a when-issued or delayed delivery basis; (c) 
   purchasing or selling futures contracts, forward foreign exchange 
   contracts or options; (d) borrowing money in accordance with restrictions 
   described above; or (e) lending portfolio securities. 

     6. Make loans of money or securities, except; (a) by the purchase of 
   publicly distributed debt obligations in which the Fund may invest 
   consistent with its investment objectives and policies; (b) by investment 
   in repurchase or reverse repurchase agreements; or (c) by lending its 
   portfolio securities. 

     7. Make short sales of securities or maintain a short position, unless 
   at all times when a short position is open it either owns an equal amount 
   of such securities or owns securities which, without payment of any 
   further consideration, are convertible into or exchangeable for securities 
   of the same issue as, and equal in amount to, the securities sold short. 

     8. Engage in the underwriting of securities, except insofar as the Fund 
   may be deemed an underwriter under the Securities Act of 1933 in disposing 
   of a portfolio security. 

     9. Invest for the purpose of exercising control or management of any 
   other issuer. 

   The Fund will not invest more than 5% of its net assets in warrants, 
including not more than 2% of such net assets in warrants not listed on 
either a recognized domestic or foreign exchange. However, the acquisition of 
warrants attached to other securities is not subject to this restriction. In 
addition, as a nonfundamental policy, the Fund may not invest in securities 
of any issuer if, to the knowledge of the Fund, any officer or trustee of the 
Fund or any officer or director of the Investment Manager owns more than 1/2 
of 1% of the outstanding securities of such issuer, and such officers, 
trustees and directors who own more than 1/2 of 1% own in the aggregate more 
than 5% of the outstanding securities of such issuers. The Fund has no 
present intention to make any investments, during the coming year, in 
securities issued by other investment companies. 

   
   Notwithstanding any other investment policy or restriction, the Fund may 
seek to achieve its investment objective by investing all or substantially 
all of its assets in another investment company having substantially the same 
investment objective and policies as the Fund. 
    

   If a percentage restriction is adhered to at the time of investment, a 
later increase or decrease in percentage resulting from a change in values of 
portfolio securities or amount of total or net assets will not be considered 
a violation of any of the foregoing restrictions. 

PORTFOLIO TRANSACTIONS AND BROKERAGE 
- ----------------------------------------------------------------------------- 

   Subject to the general supervision of the Fund's Trustees, the Investment 
Manager is responsible for decisions to buy and sell securities of the Fund, 
the selection of brokers and dealers to effect the transactions, and the 
negotiation of brokerage commissions, if any. Purchases and sales of 
securities on a stock exchange are effected through brokers who charge a 
commission for their services. In the over-the-counter market, securities are 
generally traded on a "net" basis with non-affiliated dealers acting as 
principal for their own accounts without a stated commission, although the 
price of the security usually includes a profit to the dealer. The Fund also 
expects that securities will be purchased at times in underwritten offerings 
where the price includes a fixed amount of compensation, generally referred 
to as the underwriter's concession or discount. In the underwritten 
offerings, securities are purchased at a fixed price which includes an amount 
of compensation equal to the underwriter's concession. On occasion, certain 
money market instruments may be purchased directly from an issuer, in which 
case no commissions or discounts are paid. For the fiscal years ended July 
31, 1994, 1995, and 1996, the Fund paid brokerage commissions of $649,320, 
$801,163, and $270,559, respectively. 

   The Investment Manager currently serves as investment adviser to a number 
of clients, including other investment companies, and may in the future act 
as investment manager or adviser to others. It is the practice of the 
Investment Manager to cause purchase and sale transactions to be allocated 
among the Fund and others whose assets it manages in such manner as it deems 
equitable. In making such 

                                       26
<PAGE>

allocations among the Fund and other client accounts, various factors may be 
considered, including the respective investment objectives, the relative size 
of portfolio holdings of the same or comparable securities, the availability 
of cash for investment, the size of investment commitments generally held and 
the opinions of the persons responsible for managing the portfolios of the 
Fund and other client accounts. In the case of certain initial and secondary 
public offerings, the Investment Manager may utilize a pro-rata allocation 
process based on the size of the Dean Witter Funds involved and the number of 
shares available from the public offering. 

   The policy of the Fund regarding purchases and sales of securities for its 
portfolio is that primary consideration will be given to obtaining the most 
favorable prices and efficient executions of transactions. Consistent with 
this policy, when securities transactions are effected on a stock exchange, 
the Fund's policy is to pay commissions which are considered fair and 
reasonable without necessarily determining that the lowest possible 
commissions are paid in all circumstances. The Fund believes that a 
requirement always to seek the lowest possible commission cost could impede 
effective portfolio management and preclude the Fund and the Investment 
Manager from obtaining a high quality of brokerage and research services. In 
seeking to determine the reasonableness of brokerage commissions paid in any 
transaction, the Investment Manager relies upon its experience and knowledge 
regarding commissions generally charged by various brokers and on their 
judgment in evaluating the brokerage and research services received from the 
broker effecting the transaction. Such determinations are necessarily 
subjective and imprecise, as in most cases an exact dollar value for those 
services is not ascertainable. 

   The Fund anticipates that certain of its transactions involving foreign 
securities will be effected on securities exchanges. Fixed commissions on 
such transactions are generally higher than negotiated commissions on 
domestic transactions. There is also generally less government supervision 
and regulation of foreign securities exchanges and brokers than in the United 
States. 

   In seeking to implement the Fund's policies, the Investment Manager 
effects transactions with those brokers and dealers who the Investment 
Manager believes provide the most favorable prices and are capable of 
providing efficient executions. If the Investment Manager believes such 
prices and executions are obtainable from more than one broker or dealer, it 
may give consideration to placing portfolio transactions with those brokers 
and dealers who also furnish research and other services to the Fund or the 
Investment Manager. Such services may include, but are not limited to, any 
one or more of the following: information as to the availability of 
securities for purchase or sale; statistical or factual information or 
opinions pertaining to investment; wire services; and appraisals or 
evaluations of portfolio securities. The Fund will not purchase at a higher 
price or sell at a lower price in connection with transactions effected with 
a dealer, acting as principal, who furnishes research services to the Fund 
than would be the case if no weight were given by the Fund to the dealer's 
furnishing of such services. The Fund paid $468,627, $655,964, and $217,125, 
respectively, in commissions to brokers providing research services to effect 
transactions totalling $175,549,085, $265,984,313, and $92,253,743, 
respectively for the fiscal years ended July 31, 1994, 1995, and 1996. 

   The information and services received by the Investment Manager from 
brokers and dealers may be of benefit to the Investment Manager in the 
management of accounts of some of its other clients and may not in all cases 
benefit the Fund directly. While the receipt of such information and services 
is useful in varying degrees and would generally reduce the amount of 
research or services otherwise performed by the Investment Manager and 
thereby reduce its expenses, it is of indeterminable value and the fees paid 
to the Investment Manager are not reduced by any amount that may be 
attributable to the value of such services. 

   Pursuant to an order of the Securities and Exchange Commission, the Fund 
may effect principal transactions in certain money market instruments with 
DWR. The Fund will limit its transactions with DWR to U.S. Government and 
Government Agency Securities, Bank Money Instruments (i.e., Certificates of 
Deposit and Bankers' Acceptances) and Commercial Paper. Such transactions 
will be effected with DWR only when the price available from DWR is better 
than that available from other dealers. 

                                       27
<PAGE>

   
   Consistent with the policy described above, brokerage transactions in 
securities listed on exchanges or admitted to unlisted trading privileges may 
be effected through DWR and other affiliated brokers and dealers. In order 
for an affiliated broker or dealer to effect any portfolio transactions for 
the Fund, the commissions, fees or other remuneration received by the 
affiliated broker or dealer must be reasonable and fair compared to the 
commissions, fees or other remuneration paid to other brokers in connection 
with comparable transactions involving similar securities being purchased or 
sold on an exchange during a comparable period of time. This standard would 
allow the affiliated broker or dealer to receive no more than the 
remuneration which would be expected to be received by an unaffiliated broker 
in a commensurate arm's-length transaction. Furthermore, the Trustees of the 
Fund, including a majority of the Trustees who are not "interested" persons 
to the Fund, as defined in the Act, have adopted procedures which are 
reasonably designed to provide that any commissions, fees or other 
remuneration paid to an affiliated broker or dealer are consistent with the 
foregoing standard. The Fund paid DWR $74,905, $95,560, and $9,000, 
respectively, (11.54%, 11.93%, and 3.33%, respectively of its brokerage 
commissions) for the fiscal years ended July 31, 1994, 1995, and 1996, to 
effect transactions totalling $32,815,235, $43,615,162, and $4,241,048 
(13.12%, 13.07%, and 3.59% of all transactions on which brokerage commissions 
were paid). The Fund does not reduce the management fee it pays to the 
Investment Manager by any amount of the brokerage commissions it may pay to 
an affiliated broker or dealer. 

THE DISTRIBUTOR 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus, shares of the Fund are distributed by Dean 
Witter Distributors Inc. (the "Distributor"). The Distributor has entered 
into a selected dealer agreement with DWR, which through its own sales 
organization sells shares of the Fund and may enter into selected dealer 
agreements with other selected dealers ("Selected Broker-Dealers"). The 
Distributor, a Delaware corporation, is a wholly-owned subsidiary of MSDWD. 
The Trustees of the Fund, including a majority of the Trustees who are not, 
and were not at the time they voted, interested persons of the Fund, as 
defined in the Act (the "Independent Trustees"), approved, at their meeting 
held on June 30, 1997, the current Distribution Agreement appointing the 
Distributor the exclusive Distributor of the Fund's shares and providing for 
the Distributor to bear distribution expenses not borne by the Fund. By its 
terms, the Distribution Agreement has an initial term ending April 30, 1998 
and will remain in effect from year to year thereafter if approved by the 
Board. 

   The Distributor bears all expenses it may incur in providing services 
under the Distribution Agreement. Such expenses include the payment of 
commissions for sales of the Fund's shares and incentive compensation to 
account executives. The Distributor also pays certain expenses in connection 
with the distribution of the Fund's shares, including the costs of preparing, 
printing and distributing advertising or promotional materials, and the costs 
of printing and distributing prospectuses and supplements thereto used in 
connection with the offering and sale of the Fund's shares. The Fund bears 
the costs of initial typesetting, printing and distribution of prospectuses 
and supplements thereto to shareholders. The Fund also bears the cost of 
registering the Fund and its shares under federal and state securities laws 
and pays filing fees in accordance with state securities laws. The Fund and 
the Distributor have agreed to indemnify each other against certain 
liabilities, including liabilities under the Securities Act of 1933, as 
amended. Under the Distribution Agreement, the Distributor uses its best 
efforts in rendering services to the Fund, but in the absence of willful 
misfeasance, bad faith, gross negligence or reckless disregard of its 
obligations, the Distributor is not liable to the Fund or any of its 
shareholders for any error of judgment or mistake of law or for any act or 
omission or for any losses sustained by the Fund or its shareholders. 

PLAN OF DISTRIBUTION 

   The Fund has adopted a Plan of Distribution pursuant to Rule 12b-1 under 
the Act (the "Plan") pursuant to which each Class, other than Class D, pays 
the Distributor compensation accrued daily and payable monthly at the 
following annual rates: 0.25% and 1.0% of the average daily net assets of 
Class A and Class C, respectively, and, with respect to Class B, 1.0% of the 
lesser of: (a) the average daily aggregate gross sales of the Fund's Class B 
shares since the inception of the Fund (not including 
    
                                       28
<PAGE>

   
reinvestments of dividends or capital gains distributions), less the average 
daily aggregate net asset value of the Fund's Class B shares redeemed since 
the Fund's inception upon which a contingent deferred sales charge has been 
imposed or upon which such charge has been waived, or (b) the average daily 
net assets of Class B. The Distributor also receives the proceeds of 
front-end sales charges and of contingent deferred sales charges imposed on 
certain redemptions of shares, which are separate and apart from payments 
made pursuant to the Plan (see "Purchase of Fund Shares" in the Prospectus). 
The Distributor has informed the Fund that it received approximately 
$877,000, $952,718, and $610,425 in contingent deferred sales charges for the 
fiscal years ended July 31, 1994, 1995, and 1996, respectively, none of which 
was retained by the Distributor. 

   The Distributor has informed the Fund that the entire fee payable by Class 
A and a portion of the fees payable by each of Class B or Class C each year 
pursuant to the Plan equal to 0.25% of such Class's average daily net assets 
are currently each characterized as a "service fee" under the Rules of the 
Association of the National Association of Securities Dealers, Inc. (of which 
the Distributor is a member). The "service fee" is a payment made for 
personal service and/or the maintenance of shareholder accounts. The 
remaining portion of the Plan fees payable by a Class, if any, is 
characterized as an "asset-based sales charge" as such is defined by the 
aforementioned Rules of the Association. 

   The Plan was adopted by a majority vote of the Board of Trustees, 
including all of the Trustees of the Fund who are not "interested persons" of 
the Fund (as defined in the Act) and who have no direct or indirect financial 
interest in the operation of the Plan (the "Independent 12b-1 Trustees"), 
cast in person at a meeting called for the purpose of voting on the Plan, on 
July 29, 1992 and by DWR, as the then sole shareholder of the Fund on July 
31, 1992. 

   At their meeting held on October 30, 1992, the Trustees of the Fund, 
including all of the independent 12b-1 Trustees, approved certain amendments 
to the Plan which took effect in January, 1993 and were designed to reflect 
the facts that upon an internal reorganization described above, the share 
distribution activities theretofore performed for the Fund by DWR were 
assumed by the Distributor and that DWR's sales activities are now being 
performed pursuant to the terms of a selected dealer agreement between the 
Distributor and DWR. The amendments provide that payments under the Plan will 
be made to the Distributor rather than to DWR as they had been before the 
amendment, and that the Distributor in turn is authorized to make payments to 
DWR, its affiliates or other selected broker-dealers (or direct that the Fund 
pay such entities directly). The Distributor is also authorized to retain 
part of such fee as compensation for its own distribution-related expenses. 
At their meeting held on April 28, 1993, the Trustees, including a majority 
of the Independent 12b-1 Trustees, also approved certain technical amendments 
to the Plan in connection with amendments adopted by the National Association 
of Securities Dealers, Inc. to its Rules of the Association. At their meeting 
held on October 26, 1995, the Trustees of the Fund, including all of the 
Independent 12b-1 Trustees, approved an amendment to the Plan to permit 
payments to be made under the Plan with respect to certain distribution 
expenses incurred in connection with the distribution of shares, including 
personal services to shareholders with respect to holdings of such shares, of 
an investment company whose assets are acquired by the Fund in a tax-free 
reorganization. At their meeting held on June 30, 1997, the Trustees, 
including a majority of the Independent 12b-1 Trustees, approved amendments 
to the Plan to reflect the multiple-class structure for the Fund, which took 
effect on July 28, 1997. 

   Under the Plan and as required by Rule 12b-1, the Trustees will receive 
and review promptly after the end of each fiscal quarter a written report 
provided by the Distributor of the amounts expended by the Distributor under 
the Plan and the purpose for which such expenditures were made. The Fund 
accrued amounts payable to the Distributor under the Plan, during the fiscal 
year ended July 31, 1996, of $3,864,860, which is equal to 1.0% of the Fund's 
average daily net assets for the fiscal year and was calculated pursuant to 
clause (b) of the compensation formula under the Plan. This amount is treated 
by the Fund as an expense in the year it is accrued. This amount represents 
amounts paid by Class B only; there were no Class A or Class C shares 
outstanding on such date. 

   The Plan was adopted in order to permit the implementation of the Fund's 
method of distribution. Under this distribution method the Fund offers four 
Classes of shares, each with a different distribution arrangement as set 
forth in the Prospectus. 
    
                                       29
<PAGE>

   
   With respect to Class A shares, DWR compensates its account executives by 
paying them, from proceeds of the front-end sales charge, commissions for the 
sale of Class A shares, currently a gross sales credit of up to 5.0% of the 
amount sold (except as provided in the following sentence) and an annual 
residual commission, currently a residual of up to 0.25% of the current value 
of the respective accounts for which they are the account executives or 
dealers of record in all cases. On orders of $1 million or more (for which no 
sales charge was paid) or net asset value purchases by 401(k) plans or other 
employer-sponsored plans qualified under Section 401(a) of the Internal 
Revenue Code for which Dean Witter Trust Company ("DWTC") or Dean Witter 
Trust FSB ("DWTFSB") serves as Trustee or the 401(k) Support Services Group 
of DWR serves as recordkeeper, the Investment Manager compensates DWR's 
account executives by paying them, from its own funds, a gross sales credit 
of 1.0% of the amount sold. 

   With respect to Class B shares, DWR compensates its account executives by 
paying them, from its own funds, commissions for the sale of Class B shares, 
currently a gross sales credit of up to 5.0% of the amount sold (except as 
provided in the following sentence) and an annual residual commission, 
currently a residual of up to 0.25% of the current value (not including 
reinvested dividends or distributions) of the amount sold in all cases. In 
the case of retirement plans qualified under Section 401(k) of the Internal 
Revenue Code and other employer-sponsored plans qualified under Section 
401(a) of the Internal Revenue Code for which DWTC or DWTFSB serves as 
Trustee or the 401(k) Support Services Group of DWR serves as recordkeeper, 
and which plans are opened on or after July 28, 1997, DWR compensates its 
account executives by paying them, from its own funds, a gross sales credit 
of 3.0% of the amount sold. 

   With respect to Class C shares, DWR compensates its account executives by 
paying them, from its own funds, commissions for the sale of Class C shares, 
currently a gross sales credit of up to 1.0% of the amount sold and an annual 
residual commission, currently a residual of up to 1.0% of the current value 
of the respective accounts for which they are the account executives of 
record. 

   With respect to Class D shares other than shares held by participants in 
the InterCapital mutual fund asset allocation program, the Investment Manager 
compensates DWR's account executives by paying them, from its own funds, 
commissions for the sale of Class D shares, currently a gross sales credit of 
up to 1.0% of the amount sold. There is a chargeback of 100% of the amount 
paid if the Class D shares are redeemed in the first year and a chargeback of 
50% of the amount paid if the Class D shares are redeemed in the second year 
after purchase. The Investment Manager also compensates DWR's account 
executives by paying them, from its own funds, an annual residual commission, 
currently a residual of up to 0.10% of the current value of the respective 
accounts for which they are the account executives of record (not including 
accounts of participants in the InterCapital mutual fund asset allocation 
program). 

   The gross sales credit is a charge which reflects commissions paid by the 
Distributor to account executives of DWR and other Selected Dealers and Fund 
associated distribution-related expenses, including sales compensation, and 
overhead and other branch office distribution-related expenses including: (a) 
the expenses of operating DWR's branch offices in connection with the sale of 
Fund shares, including lease costs, the salaries and employee benefits of 
operations and sales support personnel, utility costs, communications costs 
and the costs of stationery and supplies, (b) the costs of client sales 
seminars, (c) travel expenses of mutual fund sales coordinators to promote 
the sale of Fund shares and (d) other expenses relating to branch promotion 
of Fund sales. The distribution fee that the Distributor receives from the 
Fund under the Plan, in effect, offsets distribution expenses incurred on 
behalf of the Fund and, in the case of Class B shares, opportunity costs, 
such as the gross sales credit and an assumed interest charge thereon 
("carrying charge"). In the Distributor's reporting of its distribution 
expenses to the Fund, in the case of Class B shares, such assumed interest 
(computed at the "broker's call rate") is calculated on the gross sales 
credit as it is reduced by amounts received by the Distributor under the Plan 
and any contingent deferred sales charge received by the Distributor upon 
redemption of shares of the Fund. No other interest charge is included as a 
distribution expense in the Distributor's calculation of its distribution 
costs for this purpose. The broker's call rate is the interest rate charged 
to securities brokers on loans secured by exchange-listed securities. 
    
                                       30
<PAGE>

   
   The Fund paid 100% of the $3,864,860 accrued under the Plan for the fiscal 
year ended July 31, 1996 to the Distributor. The Distributor and DWR estimate 
that they have spent, pursuant to the Plan, $29,461,981 on behalf of the Fund 
since the inception of the Plan. It is estimated that this amount was spent 
in approximately the following ways: (i) 10.64% ($3,134,013)--advertising and 
promotional expenses; (ii) 0.50% ($147,891)--printing of prospectuses for 
distribution to other than current shareholders; and (iii) 88.86% 
($26,180,077)--other expenses, including the gross sales credit and the 
carrying charge of which 6.32% ($1,653,629) represents carrying charges, 
37.30% ($9,766,432) represents commission credits to DWR branch offices for 
payments of commissions to account executives and 56.38% ($14,760,016) 
represents overhead and other branch office distribution-related expenses. 
These amounts represent amounts paid by Class B only; there were no Class A 
or Class C shares outstanding on such date. 

   The Fund is authorized to reimburse expenses incurred or to be incurred in 
promoting the distribution of the Fund's Class A and Class C shares and in 
servicing shareholder accounts. Reimbursement will be made through payments 
at the end of each month. The amount of each monthly payment may in no event 
exceed an amount equal to a payment at the annual rate of 0.25%, in the case 
of Class A, and 1.0%, in the case of Class C, of the average net assets of 
the respective Class during the month. No interest or other financing 
charges, if any, incurred on any distribution expenses on behalf of Class A 
and Class C will be reimbursable under the Plan. With respect to Class A, in 
the case of all expenses other than expenses representing the service fee, 
and, with respect to Class C, in the case of all expenses other than expenses 
representing a gross sales credit or a residual to account executives, such 
amounts shall be determined at the beginning of each calendar quarter by the 
Trustees, including, a majority of the Independent 12b-1 Trustees. Expenses 
representing the service fee (for Class A) or a gross sales credit or a 
residual to account executives (for Class C) may be reimbursed without prior 
determination. In the event that the Distributor proposes that monies shall 
be reimbursed for other than such expenses, then in making quarterly 
determinations of the amounts that may be reimbursed by the Fund, the 
Distributor will provide and the Trustees will review a quarterly budget of 
projected distribution expenses to be incurred on behalf of the Fund, 
together with a report explaining the purposes and anticipated benefits of 
incurring such expenses. The Trustees will determine which particular 
expenses, and the portions thereof, that may be borne by the Fund, and in 
making such a determination shall consider the scope of the Distributor's 
commitment to promoting the distribution of the Fund's Class A and Class C 
shares. 

   At any given time, the Distributor may have incurred expenses in 
distributing shares of the Fund which may be more or less than the total of 
(i) the payments made by the Fund pursuant to the Plan and (ii) the proceeds 
of contingent deferred sales charges paid by investors upon redemption of 
shares. The Distributor has advised the Fund that in the case of Class B 
shares the excess distribution expenses, including the carrying charge 
designed to approximate the opportunity costs incurred by DWR which arise 
from it having advanced monies without having received the amount of any 
sales charges imposed at the time of sale of the Fund's Class B shares, 
totalled $16,178,097 as of July 31, 1996. Because there is no requirement 
under the Plan that the Distributor be reimbursed for all its expenses with 
respect to Class B shares or any requirement that the Plan be continued from 
year to year, this excess amount does not constitute a liability of the Fund. 
Although there is no legal obligation for the Fund to pay expenses incurred 
by the Distributor in excess of payments made to the Distributor under the 
Plan, and the proceeds of contingent deferred sales charges paid by investors 
upon redemption of shares, if for any reason the Plan is terminated, the 
Trustees will consider at that time the manner in which to treat such 
expenses. Any cumulative expenses incurred by the Distributor, but not yet 
recovered through distribution fees or contingent deferred sales charges, may 
or may not be recovered through future distribution fees or contingent 
deferred sales charges. 

   No interested person of the Fund nor any Trustee of the Fund who is not an 
interested person of the Fund, as defined in the Act, has any direct or 
indirect financial interest in the operation of the Plan except to the extent 
that the Distributor, InterCapital, DWR, DWSC or certain of its employees may 
be deemed to have such an interest as a result of benefits derived from the 
successful operation of the Plan or as a result of receiving a portion of the 
amounts expended thereunder by the Fund. 
    
                                       31
<PAGE>

   
   Under its terms, the Plan had an initial term ending April 30, 1993 and 
will continue from year to year thereafter, provided such continuance is 
approved annually by a vote of the Trustees in the manner described above. 
Prior to the Board's approval of amendments to the Plan to reflect the 
multiple-class structure for the Fund, the most recent continuance of the 
Plan for one year, until April 30, 1998, was approved by the Board of 
Trustees of the Fund, including a majority of the Independent 12b-1 Trustees, 
at a Board meeting held on April 24, 1997. Prior to approving the 
continuation of the Plan, the Trustees requested and received from the 
Distributor and reviewed all the information which they deemed necessary to 
arrive at an informed determination. In making their determination to 
continue the Plan, the Trustees considered: (1) the Fund's experience under 
the Plan and whether such experience indicates that the Plan is operating as 
anticipated; (2) the benefits the Fund had obtained, was obtaining and would 
be likely to obtain under the Plan; and (3) what services had been provided 
and were continuing to be provided under the Plan to the Fund and its 
shareholders. Based upon their review, the Trustees of the Fund, including 
each of the Independent 12b-1 Trustees, determined that continuation of the 
Plan would be in the best interest of the Fund and would have a reasonable 
likelihood of continuing to benefit the Fund and its shareholders. In the 
Trustees' quarterly review of the Plan, they will consider its continued 
appropriateness and the level of compensation provided therein. 

   The Plan may not be amended to increase materially the amount to be spent 
for the services described therein without approval by the shareholders of 
the affected Class or Classes of the Fund, and all material amendments to the 
Plan must also be approved by the Trustees in the manner described above. The 
Plan may be terminated at any time, without payment of any penalty, by vote 
of a majority of the Independent 12b-1 Trustees or by a vote of a majority of 
the outstanding voting securities of the Fund (as defined in the Act) on not 
more than thirty days' written notice to any other party to the Plan. So long 
as the Plan is in effect, the election and nomination of Independent 12b-1 
Trustees shall be committed to the discretion of the Independent 12b-1 
Trustees. 

DETERMINATION OF NET ASSET VALUE 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus, the net asset value per share for each 
Class of shares of the Fund is determined at 4:00 p.m., New York time (or, on 
days when the New York Stock Exchange closes prior to 4:00 p.m., at such 
earlier time), on each day the New York Stock Exchange is open, by taking the 
net assets of the Fund, dividing by the number of shares outstanding and 
adjusting the result to the nearest cent. The New York Stock Exchange 
currently observes the following holidays: New Year's Day, Reverend Dr. 
Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day, 
Independence Day, Labor Day, Thanksgiving Day and Christmas Day. 
    

   Short-term debt securities with remaining maturities of 60 days or less at 
the time of purchase are valued at amortized cost, unless the Trustees 
determine such does not reflect the securities' fair value, in which case 
these securities will be valued at their fair value as determined by the 
Trustees. Other short-term debt securities will be valued on a mark to market 
basis until such time as they reach a remaining maturity of 60 days, 
whereupon they will be valued at amortized cost using their value on the 61st 
day unless the Trustees determine such does not reflect the securities' fair 
value, in which case these securities will be valued at their fair market 
value as determined by the Trustees. Listed options on debt securities are 
valued at the latest sale price on the exchange on which they are listed 
unless no sales of such options have taken place that day, in which case, 
they will be valued at the mean between their closing bid and asked prices. 
Unlisted options on debt securities are valued at the mean between the latest 
bid and asked price. Futures are valued at the latest sale price on the 
commodities exchange on which they trade unless the Trustees determine that 
such price does not reflect their market value, in which case they will be 
valued at their fair value as determined by the Trustees. All other 
securities and other assets, including illiquid securities, are valued at 
their fair value as determined in good faith under procedures established by 
and under the supervision of the Trustees. 

   
   Generally, trading in foreign securities, as well as corporate bonds, 
United States government securities and money market instruments, is 
substantially completed each day at various times prior to 4:00 p.m., New 
York time. The values of such securities used in computing the net asset 
value for each Class of shares of the Fund's shares are determined as of such 
times. Foreign currency exchange rates 
    
                                       32
<PAGE>

   
are also generally determined prior to 4:00 p.m., New York time. 
Occasionally, events which affect the values of such securities and such 
exchange rates may occur between the times at which they are determined and 
4:00 p.m., New York time (or, on days when the New York Stock Exchange closes 
prior to 4:00 p.m., at such earlier time), and will therefore not be 
reflected in the computation of net asset value for each Class of shares. If 
events materially affecting the value of such securities occur during such 
period, then these securities will be valued at their fair value as 
determined in good faith under procedures established by and under the 
supervision of the Trustees. 

PURCHASE OF FUND SHARES 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus, the Fund offers four Classes of shares as 
follows: 

INITIAL SALES CHARGE ALTERNATIVE--CLASS A SHARES 

   Class A shares are sold to investors with an initial sales charge that 
declines to zero for larger purchases; however, Class A shares sold without 
an initial sales charge are subject to a contingent deferred sales charge 
("CDSC") of 1.0% if redeemed within one year of purchase, except in the 
circumstances discussed in the Prospectus. 

   Right of Accumulation. As discussed in the Prospectus, investors may 
combine the current value of shares purchased in separate transactions for 
purposes of benefitting from the reduced sales charges available for 
purchases of shares of the Fund totalling at least $25,000 in net asset 
value. For example, if any person or entity who qualifies for this privilege 
holds Class A shares of the Fund and/or other Dean Witter Funds that are 
multiple class funds ("Dean Witter Multi-Class Funds") or shares of other 
Dean Witter Funds sold with a front-end sales charge purchased at a price 
including a front-end sales charge having a current value of $5,000, and 
purchases $20,000 of additional shares of the Fund, the sales charge 
applicable to the $20,000 purchase would be 4.75% of the offering price. 

   The Distributor must be notified by the selected broker-dealer or the 
shareholder at the time a purchase order is placed that the purchase 
qualifies for the reduced charge under the Right of Accumulation. Similar 
notification must be made in writing by the selected broker-dealer or 
shareholder when such an order is placed by mail. The reduced sales charge 
will not be granted if: (a) such notification is not furnished at the time of 
the order; or (b) a review of the records of the Distributor or Dean Witter 
Trust Company (the "Transfer Agent") fails to confirm the investor's 
represented holdings. 

   Letter of Intent. As discussed in the Prospectus, reduced sales charges 
are available to investors who enter into a written Letter of Intent 
providing for the purchase, within a thirteen-month period, of Class A shares 
of the Fund from the Distributor or from a single Selected Broker-Dealer. 

   A Letter of Intent permits an investor to establish a total investment 
goal to be achieved by any number of purchases over a thirteen-month period. 
Each purchase of Class A shares made during the period will receive the 
reduced sales commission applicable to the amount represented by the goal, as 
if it were a single purchase. A number of shares equal in value to 5% of the 
dollar amount of the Letter of Intent will be held in escrow by the Transfer 
Agent, in the name of the shareholder. The initial purchase under a Letter of 
Intent must be equal to at least 5% of the stated investment goal. 

   The Letter of Intent does not obligate the investor to purchase, nor the 
Fund to sell, the indicated amount. In the event the Letter of Intent goal is 
not achieved within the thirteen-month period, the investor is required to 
pay the difference between the sales charge otherwise applicable to the 
purchases made during this period and sales charges actually paid. Such 
payment may be made directly to the Distributor or, if not paid, the 
Distributor is authorized by the shareholder to liquidate a sufficient number 
of his or her escrowed shares to obtain such difference. 

   If the goal is exceeded and purchases pass the next sales charge level, 
the sales charge on the entire amount of the purchase that results in passing 
that level and on subsequent purchases will be subject to further reduced 
sales charges in the same manner as set forth above under "Right of 
Accumulation," but there will be no retroactive reduction of sales charges on 
previous purchases. For the purpose of determining whether the investor is 
entitled to a further reduced sales charge applicable to 
    
                                       33
<PAGE>

   
purchases at or above a sales charge level which exceeds the stated goal of a 
Letter of Intent, the cumulative current net asset value of any shares owned 
by the investor in any other Dean Witter Funds held by the shareholder which 
were previously purchased at a price including a front-end sales charge 
(including shares of the Fund and other Dean Witter Funds acquired in 
exchange for those shares, and including in each case shares acquired through 
reinvestment of dividends and distributions) will be added to the cost or net 
asset value of shares of the Fund owned by the investor. However, shares of 
"Exchange Funds" (see "Shareholder Services--Exchange Privilege") and the 
purchase of shares of other Dean Witter Funds will not be included in 
determining whether the stated goal of a Letter of Intent has been reached. 

   At any time while a Letter of Intent is in effect, a shareholder may, by 
written notice to the Distributor, increase the amount of the stated goal. In 
that event, only shares purchased during the previous 90-day period and still 
owned by the shareholder will be included in the new sales charge reduction. 
The 5% escrow and minimum purchase requirements will be applicable to the new 
stated goal. Investors electing to purchase shares of the Fund pursuant to a 
Letter of Intent should carefully read such Letter of Intent. 

CONTINGENT DEFERRED SALES CHARGE ALTERNATIVE--CLASS B SHARES 

   Class B shares are sold without an initial sales charge but are subject to 
a CDSC payable upon most redemptions within six years after purchase. As 
stated in the Prospectus, a CDSC will be imposed on any redemption by an 
investor if after such redemption the current value of the investor's Class B 
shares of the Fund is less than the dollar amount of all payments by the 
shareholder for the purchase of Class B shares during the preceding six years 
(or, in the case of shares held by certain employer-sponsored benefit plans, 
three years). However, no CDSC will be imposed to the extent that the net 
asset value of the shares redeemed does not exceed: (a) the current net asset 
value of shares purchased more than six years (or, in the case of shares held 
by certain employer-sponsored benefit plans, three years) prior to the 
redemption, plus (b) the current net asset value of shares purchased through 
reinvestment of dividends or distributions of the Fund or another Dean Witter 
Fund (see "Shareholder Services--Targeted Dividends"), plus (c) the current 
net asset value of shares acquired in exchange for (i) shares of Dean Witter 
front-end sales charge funds, or (ii) shares of other Dean Witter Funds for 
which shares of front-end sales charge funds have been exchanged (see 
"Shareholder Services--Exchange Privilege"), plus (d) increases in the net 
asset value of the investor's shares above the total amount of payments for 
the purchase of Fund shares made during the preceding six (three) years. The 
CDSC will be paid to the Distributor. 

   In determining the applicability of the CDSC to each redemption, the 
amount which represents an increase in the net asset value of the investor's 
shares above the amount of the total payments for the purchase of shares 
within the last six years (or, in the case of shares held by certain 
employer-sponsored benefit plans, three years) will be redeemed first. In the 
event the redemption amount exceeds such increase in value, the next portion 
of the amount redeemed will be the amount which represents the net asset 
value of the investor's shares purchased more than six (three) years prior to 
the redemption and/or shares purchased through reinvestment of dividends or 
distributions and/or shares acquired in exchange for shares of Dean Witter 
front-end sales charge funds, or for shares of other Dean Witter funds for 
which shares of front-end sales charge funds have been exchanged. A portion 
of the amount redeemed which exceeds an amount which represents both such 
increase in value and the value of shares purchased more than six years (or, 
in the case of shares held by certain employer-sponsored benefit plans, three 
years) prior to the redemption and/or shares purchased through reinvestment 
of dividends or distributions and/or shares acquired in the above-described 
exchanges will be subject to a CDSC. 

   The amount of the CDSC, if any, will vary depending on the number of years 
from the time of payment for the purchase of Class B shares of the Fund until 
the time of redemption of such shares. For purposes of determining the number 
of years from the time of any payment for the purchase of shares, all 
payments made during a month will be aggregated and deemed to have been made 
on the last day 
    
                                       34
<PAGE>

   
of the month. The following table sets forth the rates of the CDSC applicable 
to most Class B shares of the Fund: 
    

   
<TABLE>
<CAPTION>
         YEAR SINCE 
          PURCHASE             CDSC AS A PERCENTAGE 
        PAYMENT MADE            OF AMOUNT REDEEMED 
        ------------            ------------------ 
<S>                                    <C>
First ......................           5.0% 
Second .....................           4.0% 
Third ......................           3.0% 
Fourth .....................           2.0% 
Fifth ......................           2.0% 
Sixth ......................           1.0% 
Seventh and thereafter  ....           None 
</TABLE>
    

   
   The following table sets forth the rates of the CDSC applicable to Class B 
shares of the Fund held by 401(k) plans or other employer-sponsored plans 
qualified under Section 401(a) of the Internal Revenue Code for which DWTC or 
DWTFSB serves as Trustee or the 401(k) Support Services Group of DWR serves 
as recordkeeper and whose accounts are opened on or after July 28, 1997: 
    

   
<TABLE>
<CAPTION>
        YEAR SINCE 
         PURCHASE            CDSC AS A PERCENTAGE 
       PAYMENT MADE           OF AMOUNT REDEEMED 
       ------------           ------------------ 
<S>                                  <C>
First ....................           2.0% 
Second ...................           2.0% 
Third ....................           1.0% 
Fourth and thereafter ....           None 
</TABLE>
    

   
   In determining the rate of the CDSC, it will be assumed that a redemption 
is made of shares held by the investor for the longest period of time within 
the applicable six-year or three-year period. This will result in any such 
CDSC being imposed at the lowest possible rate. The CDSC will be imposed, in 
accordance with the table shown above, on any redemptions within six years 
(or, in the case of shares held by certain employer-sponsored benefit plans, 
three years) of purchase which are in excess of these amounts and which 
redemptions do not qualify for waiver of the CDSC, as described in the 
Prospectus. 

LEVEL LOAD ALTERNATIVE--CLASS C SHARES 

   Class C shares are sold without a sales charge but are subject to a CDSC 
of 1.0% on most redemptions made within one year after purchase, except in 
the circumstances discussed in the Prospectus. 

NO LOAD ALTERNATIVE--CLASS D SHARES 

   Class D shares are offered without any sales charge on purchase or 
redemption. Class D shares are offered only to those persons meeting the 
qualifications set forth in the Prospectus. 
    

SHAREHOLDER SERVICES 
- ----------------------------------------------------------------------------- 

   
   Shareholder Investment Account. Upon purchase of shares of the Fund, a 
Shareholder Investment Account is opened for the investor on the books of the 
Fund, maintained by the Transfer Agent. This is an open account in which 
shares owned by the investor are credited by the Transfer Agent in lieu of 
issuance of a share certificate. If a share certficate is desired, it must be 
requested in writing for each transaction. Certificates are issued only for 
full shares and may be redeposited in the account at any time. There is no 
charge to the investor for issuance of a certificate. Whenever a shareholder 
instituted transaction takes place in the Shareholder Investment Account, the 
shareholder will be mailed a confirmation of the transaction from the Fund or 
from DWR or other Selected Broker-Dealer. 

   Automatic Investment of Dividends and Distributions. As stated in the 
Prospectus, all income dividends and capital gains distributions are 
automatically paid in full and fractional shares of the applicable Class of 
the Fund, unless the shareholder requests that they be paid in cash. Each 
purchase of shares of the Fund is made upon the condition that the Transfer 
Agent is thereby automatically 
    
                                       35
<PAGE>

   
appointed as agent of the investor to receive all dividends and capital gains 
distributions on shares owned by the investor. Such dividends and 
distributions will be paid, at the net asset value per share, in shares of 
the applicable Class of the Fund (or in cash if the shareholder so requests) 
as of the close of business on the record date. At any time an investor may 
request the Transfer Agent, in writing, to have subsequent dividends and/or 
capital gains distributions paid to him or her in cash rather than shares. To 
assure sufficient time to process the change, such request should be received 
by the Transfer Agent at least five business days prior to the record date of 
the dividend or distribution. In the case of recently purchased shares for 
which registration instructions have not been received on the record date, 
cash payments will be made to DWR or other selected broker-dealer, and will 
be forwarded to the shareholder, upon the receipt of proper instructions. 

   Investment of Distributions Received in Cash. As discussed in the 
Prospectus, any shareholder who receives a cash payment representing a 
dividend or distribution may invest such dividend or distribution in shares 
of the applicable Class at net asset value, without the imposition of a CDSC 
upon redemption, by returning the check or the proceeds to the Transfer Agent 
within 30 days after the payment date. If the shareholder returns the 
proceeds of a dividend or distribution, such funds must be accompanied by a 
signed statement indicating that the proceeds constitute a dividend or 
distribution to be invested. Such investment will be made at the net asset 
value per share next determined after receipt of the check or the proceeds by 
the Transfer Agent. 

   Targeted Dividends(Service Mark). In states where it is legally 
permissible, shareholders may also have all income dividends and capital 
gains distributions automatically invested in shares of any Class of an 
open-end Dean Witter Fund other than Dean Witter Health Sciences Trust or in 
another Class of Dean Witter Health Sciences Trust. Such investment will be 
made as described above for automatic investment in shares of the applicable 
Class of the Fund, at the net asset value per share (without sales charge) of 
the selected Dean Witter Fund as of the close of business on the payment date 
of the dividend or distribution, and will begin to earn dividends, if any, in 
the selected Dean Witter Fund the next business day. To participate in the 
Targeted Dividends program, shareholders should contact their DWR or other 
selected broker-dealer account executive or the Transfer Agent. Shareholders 
of the Fund must be shareholders of the selected Class of the Dean Witter 
Fund targeted to receive investments from dividends at the time they enter 
the Targeted Dividends program. Investors should review the prospectus of the 
targeted Dean Witter Fund before entering the program. 

   EasyInvest(Service Mark). As discussed in the Prospectus, shareholders 
may subscribe to EasyInvest, an automatic purchase plan which provides for 
any amount from $100 to $5,000 to be transferred automatically from a 
checking or savings account or following redemption of shares of a Dean 
Witter money market fund, on a semi-monthly, monthly or quarterly basis, to 
the Transfer Agent for investment in shares of the Fund. Shares purchased 
through EasyInvest will be added to the shareholder's existing account at the 
net asset value calculated the same business day the transfer of funds is 
effected. For further information or to subscribe to EasyInvest, shareholders 
should contact their DWR or other selected broker-dealer account executive or 
the Transfer Agent. 

   Direct Investments through Transfer Agent. As discussed in the Prospectus, 
shareholders may make additional investments in any Class of shares of the 
Fund for which they qualify at any time by sending a check in any amount, not 
less than $100, payable to Dean Witter Health Sciences Trust, and indicating 
the selected Class, directly to the Fund's Transfer Agent. In the case of 
Class A shares, after deduction of any applicable sales charge, the balance 
will be applied to the purchase of Fund shares, and, in the case of shares of 
the other Classes, the entire amount will be applied to the purchase of Fund 
shares, at the net asset value per share next computed after receipt of the 
check or purchase payment by the Transfer Agent. The shares so purchased will 
be credited to the investor's account. 
    

   Systematic Withdrawal Plan. As discussed in the Prospectus, a systematic 
withdrawal plan ("Withdrawal Plan") is available for shareholders who own or 
purchase shares of the Fund having a minimum value of $10,000 based upon the 
then current net asset value. The Withdrawal Plan provides for monthly or 
quarterly (March, June, September, and December) checks in any dollar amount, 
not less than $25, or in any whole percentage of the account balance, on an 
annualized basis. Any applicable 

                                       36
<PAGE>

   
CDSC will be imposed on shares redeemed under the Withdrawal Plan (see 
"Purchase of Fund Shares" in the Prospectus). Therefore, any shareholder 
participating in the Withdrawal Plan will have sufficient shares redeemed 
from his or her account so that the proceeds (net of any applicable CDSC) to 
the shareholder will be the designated monthly or quarterly amount. 
    

   Dividends and capital gains distributions on shares held under the 
Systematic Withdrawal Plan will be invested in additional full and fractional 
shares at net asset value (without a sales charge). Shares will be credited 
to an open account for the investor by the Transfer Agent; no share 
certificates will be issued. A shareholder is entitled to a share certificate 
upon written request to the Transfer Agent, although in that event the 
shareholder's Systematic Withdrawal Plan will be terminated. 

   
   The Transfer Agent acts as agent for the shareholder in tendering to the 
Fund for redemption sufficient full and fractional shares to provide the 
amount of the periodic withdrawal payment designated in the application. The 
shares will be redeemed at their net asset value determined, at the 
shareholder's option, on the tenth or twenty-fifth day (or next following 
business day) of the relevant month or quarter and normally a check for the 
proceeds will be mailed by the Transfer Agent or amounts credited to a 
shareholder's DWR or other selected broker-dealer brokerage account, within 
five business days after the date of redemption. The Withdrawal Plan may be 
terminated at any time by the Fund. 

   Withdrawal Plan payments should not be considered as dividends, yields or 
income. If periodic withdrawal plan payments continuously exceed net 
investment income and net capital gains, the shareholder's original 
investment will be correspondingly reduced and ultimately exhausted. 

   Each withdrawal constitutes a redemption of shares and any gain or loss 
realized must be recognized for federal income tax purposes. Although the 
shareholder may make additional investments of $2,500 or more under the 
Withdrawal Plan, withdrawals made concurrently with purchases of additional 
shares may be inadvisable because of the CDSC applicable to the redemption of 
shares previously purchased (see "Purchase of Fund Shares"). 
    

   Any shareholder who wishes to have payments under the Withdrawal Plan made 
to a third party or sent to an address other than the one listed on the 
account must send complete written instructions to the Transfer Agent to 
enroll in the Withdrawal Plan. The shareholder's signature on such 
instructions must be guaranteed by an eligible guarantor acceptable to the 
Transfer Agent (shareholders should contact the Transfer Agent for a 
determination as to whether a particular institution is an eligible 
guarantor). A shareholder may, at any time, change the amount and interval of 
withdrawal payments through his or her Account Executive or by written 
notification to the Transfer Agent. In addition, the party and/or the address 
to which checks are mailed may be changed by written notification to the 
Transfer Agent, with signature guarantees required in the manner described 
above. The shareholder may also terminate the Withdrawal Plan at any time by 
written notice to the Transfer Agent. In the event of such termination, the 
account will be continued as a regular shareholder investment account. The 
shareholder may also redeem all or part of the shares held in the Withdrawal 
Plan account (see "Redemptions and Repurchases" in the Prospectus) at any 
time. 

   
EXCHANGE PRIVILEGE 

   As discussed in the Prospectus, the Fund makes available to its 
shareholders an Exchange Privilege whereby shareholders of each Class of 
shares of the Fund may exchange their shares for shares of the same Class of 
shares of any other Dean Witter Multi-Class Fund without the imposition of 
any exchange fee. Shares may also be exchanged for shares of any of the 
following funds: Dean Witter Short-Term U.S. Treasury Trust, Dean Witter 
Limited Term Municipal Trust, Dean Witter Short-Term Bond Fund, Dean Witter 
Intermediate Term U.S. Treasury Trust and five Dean Witter Funds which are 
money market funds (the foregoing nine funds are hereinafter referred to as 
the "Exchange Funds"). Class A shares may also be exchanged for shares of 
Dean Witter Multi-State Municipal Series Trust and Dean Witter Hawaii 
Municipal Trust, which are Dean Witter Funds sold with a front-end sales 
charge ("FSC Funds"). Class B shares may also be exchanged for shares of Dean 
Witter Global Short-Term Income Fund Inc., Dean Witter High Income Securities 
and Dean Witter National Municipal Trust, which are Dean Witter Funds offered 
with a CDSC ("CDSC Funds"). Exchanges may be made after the shares of 
    
                                       37
<PAGE>

the Fund acquired by purchase (not by exchange or dividend reinvestment) have 
been held for thirty days. There is no waiting period for exchanges of shares 
acquired by exchange or dividend reinvestment. An exchange will be treated 
for federal income tax purposes the same as a repurchase or redemption of 
shares, on which the shareholder may realize a capital gain or loss. 

   Any new account established through the Exchange Privilege will have the 
same registration and cash dividend or dividend reinvestment plan as the 
present account, unless the Transfer Agent receives written notification to 
the contrary. For telephone exchanges, the exact registration of the existing 
account and the account number must be provided. 

   Any shares held in certificate form cannot be exchanged but must be 
forwarded to the Transfer Agent and deposited into the shareholder's account 
before being eligible for exchange. (Certificates mailed in for deposit 
should not be endorsed.) 

   
   As described below, and in the Prospectus under the caption "Purchase of 
Fund Shares" a CDSC may be imposed upon a redemption, depending on a number 
of factors, including the number of years from the time of purchase until the 
time of redemption or exchange ("holding period"). When shares of a Dean 
Witter Multi-Class Fund or any CDSC Fund are exchanged for shares of Exchange 
Funds, the exchange is executed at no charge to the shareholder, without the 
imposition of the CDSC at the time of the exchange. During the period of time 
the shareholder remains in an Exchange Fund (calculated from the last day of 
the month in which the Exchange Fund shares were acquired), the holding 
period or "year since purchase payment made" is frozen. When shares are 
redeemed out of an Exchange Fund, they will be subject to a CDSC which would 
be based upon the period of time the shareholder held shares in a Dean Witter 
Multi-Class Fund or in a CDSC Fund. However, in the case of shares exchanged 
into an Exchange Fund on or after April 23, 1990, upon a redemption of shares 
which results in a CDSC being imposed, a credit (not to exceed the amount of 
the CDSC) will be given in an amount equal to the Exchange Fund's 12b-1 
distribution fees incurred on or after that date which are attributable to 
those shares. Shareholders acquiring shares of an Exchange Fund pursuant to 
this exchange privilege may exchange those shares back into a Dean Witter 
Multi-Class Fund or in a CDSC Fund from the Exchange Fund, with no CDSC being 
imposed on such exchange. The holding period previously frozen when shares 
were first exchanged for shares of Exchange Fund resumes on the last day of 
the month in which shares of a Dean Witter Multi-Class Fund or a CDSC Fund 
are reacquired. A CDSC is imposed only upon an ultimate redemption, based 
upon the time (calculated as described above) the shareholder was invested in 
a Dean Witter Multi-Class Fund or in a CDSC Fund. In the case of exchanges of 
Class A shares which are subject to a CDSC, the holding period also includes 
the time (calculated as described above) the shareholder was invested in a 
FSC Fund. 

   When shares initially purchased in a Dean Witter Multi-Class Fund or in a 
CDSC Fund are exchanged for shares of a Dean Witter Multi-Class Fund, shares 
of a CDSC Fund, shares of a FSC Fund, or shares of an Exchange Fund, the date 
of purchase of the shares of the fund exchanged into, for purposes of the 
CDSC upon redemption, will be the last day of the month in which the shares 
being exchanged were originally purchased. In allocating the purchase 
payments between funds for purposes of the CDSC, the amount which represents 
the current net asset value of shares at the time of the exchange which were 
(i) purchased more than one, three or six years (depending on the CDSC 
schedule applicable to the shares) prior to the exchange, (ii) originally 
acquired through reinvestment of dividends or distributions and (iii) 
acquired in exchange for shares of FSC Funds, or for shares of other Dean 
Witter Funds for which shares of FSC Funds have been exchanged (all such 
shares called "Free Shares"), will be exchanged first. After an exchange, all 
dividends earned on shares in an Exchange Fund will be considered Free 
Shares. If the exchanged amount exceeds the value of such Free Shares, an 
exchange is made, on a block-by-block basis, of non-Free Shares held for the 
longest period of time (except that with respect to Class B shares if shares 
held for identical periods of time but subject to different CDSC schedules 
are held in the same Exchange Privilege Account, the shares of that block 
that are subject to a lower CDSC rate will be exchanged prior to the shares 
of that block that are subject to a higher CDSC rate). Shares equal to any 
appreciation in the value of non-Free Shares exchanged will be treated as 
Free Shares, and the amount of the purchase payments for the non-Free Shares 
of the fund exchanged into will be equal to the lesser of (a) the purchase 
payments for, or (b) the current net asset value of, the 
    
                                       38
<PAGE>

   
exchanged non-Free Shares. If an exchange between funds would result in 
exchange of only part of a particular block of non-Free Shares, then shares 
equal to any appreciation in the value of the block (up to the amount of the 
exchange) will be treated as Free Shares and exchanged first, and the 
purchase payment for that block will be allocated on a pro rata basis between 
the non-Free Shares of that block to be retained and the non-Free Shares to 
be exchanged. The pro-rated amount of such purchase payment attributable to 
the retained non-Free Shares will remain as the purchase payment for such 
shares, and the amount of purchase payment for the exchanged non-Free Shares 
will be equal to the lesser of (a) the pro-rated amount of the purchase 
payment for, or (b) the current net asset value of those exchanged non-Free 
Shares. Based upon the procedures described in the CDSC fund Prospectus under 
the caption "Purchase of Fund Shares," any applicable CDSC will be imposed 
upon the ultimate redemption of shares of any fund, regardless of the number 
of exchanges since those shares were originally purchased. 

   With respect to the repurchase of shares of the Fund, the application of 
proceeds to the purchase of new shares in the Fund or any other of the funds 
and the general administration of the Exchange Privilege, the Transfer Agent 
acts as agent for the Distributor or other Selected Broker-Dealers in the 
performance of such functions. The Transfer Agent shall be liable for its own 
negligence and not for the default or negligence of its correspondents or for 
losses in transit. The Fund shall not be liable for any default or negligence 
of the Transfer Agent, the Distributor or any Selected Broker-Dealer. 

   The Distributor and any Selected Broker-Dealer have authorized and 
appointed the Transfer Agent to act as their agent in connection with the 
application of proceeds of any redemption of Fund shares to the purchase of 
the shares of any other fund and the general administration of the Exchange 
Privilege. No commission or discounts will be paid to the Distributor or any 
Selected Broker-Dealer for any transactions pursuant to this Exchange 
Privilege. 

   Exchanges are subject to the minimum investment requirement and any other 
conditions imposed by each fund. (The minimum initial investment for the 
Exchange Privilege account for each Class is $5,000 for Dean Witter Liquid 
Asset Fund Inc., Dean Witter Tax-Free Daily Income Trust, Dean Witter 
California Tax-Free Daily Income Trust, and Dean Witter New York Municipal 
Money Market Trust, although those funds may, at their discretion accept 
initial investments of as low as $1,000. The minimum initial investment for 
the Exchange Privilege account for each Class is $10,000 for Dean Witter 
Short-Term U.S. Treasury Trust although that Fund, in its discretion, may 
accept initial purchases of as low as $5,000. The minimum initial investment 
for the Exchange Privilege account for each Class is $5,000 for Dean Witter 
Special Value Fund. The minimum initial investment for the Exchange Privilege 
account for each Class for all other Dean Witter Funds for which the Exchange 
Privilege is available is $1,000.) Upon exchange into Dean Witter Short-Term 
U.S. Treasury Trust or a money market fund, the shares of that fund will be 
held in a special Exchange Privilege Account separately from accounts of 
those shareholders who have acquired their shares directly from that fund. As 
a result, certain services normally available to shareholders of money market 
funds, including the check writing feature, will not be available for funds 
held in that account. 

   The Fund and each of the other Dean Witter Funds may limit the number of 
times this Exchange Privilege may be exercised by any investor within a 
specified period of time. Also, the Exchange Privilege may be terminated or 
revised at any time by any of the Dean Witter Funds, upon such notice as may 
be required by applicable regulatory agencies (presently sixty days' prior 
written notice for termination or material revision), provided that six 
months' prior written notice of termination will be given to the shareholders 
who hold shares of the Exchange Funds pursuant to this Exchange Privilege, 
and provided further that the Exchange Privilege may be terminated or 
materially revised at times (a) when the New York Stock Exchange is closed 
for other than customary weekends and holidays, (b) when trading on that 
Exchange is restricted, (c) when an emergency exists as a result of which 
disposal by the Fund of securities owned by it is not reasonably practicable 
or it is not reasonably practicable for the Fund fairly to determine the 
value of its net assets, (d) during any other period when the Securities and 
Exchange Commission by order so permits (provided that applicable rules and 
regulations of the Securities and Exchange Commission shall govern as to 
whether the conditions prescribed in (b) or (c) exist), or (e), if the Fund 
would be unable to invest amounts effectively in accordance with its 
investment objective, policies and restrictions. 
    
                                       39
<PAGE>

   For further information regarding the Exchange Privilege, shareholders 
should contact their DWR or other Selected Dealer Account Executive or the 
Transfer Agent. 

REDEMPTIONS AND REPURCHASES 
- ----------------------------------------------------------------------------- 

   
   Redemption. As stated in the Prospectus, shares of each Class of the Fund 
can be redeemed for cash at any time at the net asset value per share next 
determined; however, such redemption proceeds will be reduced by the amount 
of any applicable CDSC (see below). If shares are held in a shareholder's 
account without a share certificate,a written request for redemption to the 
Fund's Transfer Agent at P.O. Box 983, Jersey City, NJ 07303 is required. If 
certificates are held by the shareholder, the shares may be redeemed by 
surrendering the certificates with a written request for redemption. The 
share certificate, or an accompanying stock power, and the request for 
redemption must be signed by the shareholder or shareholders exactly as the 
shares are registered. Each request for redemption, whether or not 
accompanied by a share certificate, must be sent to the Fund's Transfer 
Agent, which will redeem the shares at their net asset value next computed 
(see "Purchase of Fund Shares" in the Prospectus) after it receives the 
request, and certificate, if any, in good order. Any redemption request 
received after such computation will be redeemed at the next determined net 
asset value. 

   Whether certificates are held by the shareholder or shares are held in a 
shareholder's account, if the proceeds are to be paid to any person other 
than the record owner, or if the proceeds are to be paid to a corporation 
(other than the Distributor or a selected broker-dealer for the account of 
the shareholder), partnership, trust or fiduciary, or sent to the shareholder 
at an address other than the registered address, signatures must be 
guaranteed by an eligible guarantor acceptable to the Transfer Agent 
(shareholders should contact the Transfer Agent for a determination as to 
whether a particular institution is such an eligible guarantor). A stock 
power may be obtained from any dealer or commercial bank. The Fund may change 
the signature guarantee requirements from time to time upon notice to 
shareholders, which may be by means of a new prospectus. 

   Repurchase. As stated in the Prospectus, DWR and other selected 
broker-dealers are authorized to repurchase shares represented by a share 
certificate which is delivered to any of their offices. Shares held in a 
shareholder's account without a share certificate may also be repurchased by 
DWR and other selected broker-dealers upon the telephonic request of the 
shareholder. The repurchase price is the net asset value next computed after 
such purchase order is received by DWR or other selected broker-dealer 
reduced by any applicable CDSC. 

   Payment for Shares Redeemed or Repurchased. As discussed in the 
Prospectus, payment for shares of any Class presented for repurchase or 
redemption will be made by check within seven days after receipt by the 
Transfer Agent of the certificate and/or written request in good order. The 
term "good order" means that the share certificate, if any, and request for 
redemption are properly signed, accompanied by any documentation required by 
the Transfer Agent, and bear signature guarantees when required by the Fund 
or the Transfer Agent. Such payment may be postponed or the right of 
redemption suspended at times (a) when the New York Stock Exchange is closed 
for other than customary weekends and holidays, (b) when trading on that 
Exchange is restricted, (c) when an emergency exists as a result of which 
disposal by the Fund of securities owned by it is not reasonably practicable 
or it is not reasonably practicable for the Fund fairly to determine the 
value of its net assets, or (d) during any other period when the Securities 
and Exchange Commission by order so permits; provided that applicable rules 
and regulations of the Securities and Exchange Commission shall govern as to 
whether the conditions prescribed in (b) or (c) exist. If the shares to be 
redeemed have recently been purchased by check (including a certified or bank 
cashier's check), payment of redemption proceeds may be delayed for the 
minimum time needed to verify that the check used for investment has been 
honored (not more than fifteen days from the time of receipt of the check by 
the Transfer Agent). Shareholders maintaining margin accounts with DWR or 
another selected broker-dealer are referred to their account executive 
regarding restrictions on redemption of shares of the Fund pledged in the 
margin account. 
    

   Transfers of Shares. In the event a shareholder requests a transfer of 
shares to a new registration, such shares will be transferred without sales 
charge at the time of transfer. With regard to the status of 

                                       40
<PAGE>

   
shares which are either subject to the CDSC or free of such charge (and with 
regard to the length of time shares subject to the change have been held), 
any transfer involving less than all of the shares in an account will be made 
on a pro rata basis (that is, by transferring shares in the same proportion 
that the transferred shares bear to the total shares in the account 
immediately prior to the transfer). The transferred shares will continue to 
be subject to any applicable CDSC as if they had not been so transferred. 

   Reinstatement Privilege. As described in the Prospectus, a shareholder who 
has had his or her shares redeemed or repurchased and has not previously 
exercised this reinstatement privilege may, within 35 days after the date of 
the redemption or repurchase, reinstate any portion or all of the proceeds of 
such redemption or repurchase in shares of the Fund in the same Class at net 
asset value (without sales charge) next determined after a reinstatement 
request, together with the proceeds, is received by the Transfer Agent. 
    

   Exercise of the reinstatement privilege will not affect the federal income 
tax treatment of any gain or loss realized upon the redemption or repurchase, 
except that if the redemption or repurchase resulted in a loss and 
reinstatement is made in shares of the Fund, some or all of the loss, 
depending on the amount reinstated, will not be allowed as a deduction for 
federal income tax purposes but will be applied to adjust the cost basis of 
the shares acquired upon reinstatement. 

DIVIDENDS, DISTRIBUTIONS AND TAXES 
- ----------------------------------------------------------------------------- 

   As discussed in the Prospectus, the Fund will determine either to 
distribute or to retain all or part of any net long-term capital gains in any 
year for reinvestment. If any such gains are retained, the Fund will pay 
federal income tax thereon, and, if the Fund makes an election, the 
shareholders would include such undistributed gains in their income and 
shareholders will be able to claim their share of the tax paid by the Fund as 
a credit against their individual federal income tax. 

   Gains or losses on sales of securities by the Fund will generally be 
long-term capital gains or losses if the securities have been held by the 
Fund for more than twelve months. Gains or losses on the sale of securities 
held for twelve months or less will generally be short-term gains or losses. 

   The Fund intends to qualify as a regulated investment company under 
Subchapter M of the Internal Revenue Code (the "Code"). If so qualified, the 
Fund will not be subject to federal income tax on its net investment income 
and capital gains, if any, realized during any fiscal year in which it 
distributes such income and capital gains to its shareholders. In addition, 
the Fund intends to distribute to its shareholders each calendar year a 
sufficient amount of ordinary income and capital gains to avoid the 
imposition of a 4% excise tax. 

   Any dividend or capital gains distribution received by a shareholder from 
any investment company will have the effect of reducing the net asset value 
of the shareholder's stock in that company by the exact amount of the 
dividend or capital gains distribution. Furthermore, capital gains 
distributions and dividends are subject to federal income taxes. If the net 
asset value of the shares should be reduced below a shareholder's cost as a 
result of the payment of dividends or the distribution of realized net 
long-term capital gains, such payment or distribution would be in part a 
return of the shareholder's investment to the extent of such reduction below 
the shareholder's cost, but nonetheless would be fully taxable. Therefore, an 
investor should consider the tax implications of purchasing Fund shares 
immediately prior to a distribution record date. 

   Any loss realized by shareholders upon a redemption of shares within six 
months of the date of their purchase will be treated as a long-term capital 
loss to the extent of any distributions of net long-term capital gains during 
the six-month period. 

   Dividends, interest and capital gains received by the Fund may give rise 
to withholding and other taxes imposed by foreign countries. Tax conventions 
between certain countries and the United States may reduce or eliminate such 
taxes. Investors may be entitled to claim United States foreign tax credits 
or deductions with respect to such taxes, subject to certain provisions and 
limitations contained in the Code. If more than 50% of the Fund's total 
assets at the close of its fiscal year consist of securities of 

                                       41
<PAGE>

foreign corporations, the Fund would be eligible and would determine whether 
or not to file an election with the Internal Revenue Service pursuant to 
which shareholders of the Fund will be required to include their respective 
pro rata portions of such withholding taxes in their United States income tax 
returns as gross income, treat such respective pro rata portions as taxes 
paid by them, and deduct such respective pro rata portions in computing their 
taxable income or, alternatively, use them as foreign tax credits against 
their United States income taxes. If the Fund makes such election, it will 
report annually to its shareholders the amount per share of such withholding. 

   Special Rules for Certain Foreign Currency Transactions. In general, gains 
from foreign currencies and from foreign currency options, foreign currency 
futures and forward foreign exchange contracts relating to investments in 
stock, securities or foreign currencies are currently considered to be 
qualifying income for purposes of determining whether the Fund qualifies as a 
regulated investment company. It is currently unclear, however, who will be 
treated as the issuer of certain foreign currency instruments or how foreign 
currency options, futures, or forward foreign currency contracts will be 
valued for purposes of the regulated investment company diversification 
requirements applicable to the Fund. The Fund may request a private letter 
ruling from the Internal Revenue Service on some or all of these issues. 

   Under Code Section 988, special rules are provided for certain 
transactions in a foreign currency other than the taxpayer's functional 
currency (i.e., unless certain special rules apply, currencies other than the 
U.S. dollar). In general, foreign currency gains or losses from forward 
contracts, from futures contracts that are not "regulated futures contracts", 
and from unlisted options will be treated as ordinary income or loss under 
Code Section 988. Also, certain foreign exchange gains or losses derived with 
respect to foreign fixed-income securities are also subject to Section 988 
treatment. In general, therefore, Code Section 988 gains or losses will 
increase or decrease the amount of the Fund's investment company taxable 
income available to be distributed to shareholders as ordinary income, rather 
than increasing or decreasing the amount of the Fund's net capital gain. 
Additionally, if Code Section 988 losses exceed other investment company 
taxable income during a taxable year, the Fund would not be able to make any 
ordinary dividend distributions. 

   If the Fund invests in an entity which is classified as a "passive foreign 
investment company" ("PFIC") for U.S. tax purposes, the application of 
certain tax provisions applicable to such companies could result in the 
imposition of federal income tax with respect to such investments at the Fund 
level which could not be eliminated by distributions to shareholders. 
Legislation is currently being considered with respect to this issue and, in 
any event, it is not anticipated that any taxes on the Fund with respect to 
investments in PFIC's would be significant. 

   Shareholders are urged to consult their attorneys or tax advisers 
regarding specific questions as to federal, state or local taxes. 

PERFORMANCE INFORMATION 
- ----------------------------------------------------------------------------- 

   
   As discussed in the Prospectus, from time to time the Fund may quote its 
"total return" in advertisements and sales literature. These figures are 
computed separately for Class A, Class B, Class C and Class D shares. The 
Fund's "average annual total return" represents an annualization of the 
Fund's total return over a particular period and is computed by finding the 
annual percentage rate which will result in the ending redeemable value of a 
hypothetical $1,000 investment made at the beginning of a one, five or ten 
year period, or for the period from the date of commencement of the Fund's 
operations, if shorter than any of the foregoing. The ending redeemable value 
is reduced by any CDSC at the end of the one, five or ten year or other 
period. For the purpose of this calculation, it is assumed that all dividends 
and distributions are reinvested. The formula for computing the average 
annual total return involves a percentage obtained by dividing the ending 
redeemable value by the amount of the initial investment, taking a root of 
the quotient (where the root is equivalent to the number of years in the 
period) and subtracting 1 from the result. The average annual total return of 
the Fund for the fiscal year ended July 31, 1996 and for the period October 
30, 1992 (commencement of operations) through July 31, 1996 was 19.84% and 
13.12%, respectively. These returns are for Class B only; there were no other 
Classes of shares outstanding on such date. 
    
                                       42
<PAGE>

   
   In addition to the foregoing, the Fund may advertise its total return for 
each Class over different periods of time by means of aggregate, average, 
year-by-year or other types of total return figures. Such calculations may or 
may not reflect the imposition of the maximum front-end sales charge for 
Class A or the deduction of the CDSC for each of Class B and Class C which, 
if reflected, would reduce the performance quoted. For example, the average 
annual total return of the Fund may be calculated in the manner described 
above, but without deduction for any applicable sales charge. Based on this 
calculation, the Fund's average annual total return for the fiscal year ended 
July 31, 1996 and for the period October 30, 1992 (commencement of 
operations) through July 31, 1996 was 24.84% and 13.50%, respectively. These 
returns are for Class B only; there were no other Classes of shares 
outstanding on such date. 

   In addition, the Fund may compute its aggregate total return for each 
Class for specified periods by determining the aggregate percentage rate 
which will result in the ending value of a hypothetical $1,000 investment 
made at the beginning of the period. For the purpose of this calculation, it 
is assumed that all dividends and distributions are reinvested. The formula 
for computing aggregate total return involves a percentage obtained by 
dividing the ending value (without the reduction for any sales charge) by the 
initial $1,000 investment and subtracting 1 from the result. Based on this 
calculation, the Fund's total return for the fiscal year ended July 31, 1996 
and for the period October 30, 1992 (commencement of operations) through July 
31, 1996 was 24.84% and 60.79%, respectively. These returns are for Class B 
only; there were no other Classes of shares outstanding on such date. 

   The Fund may also advertise the growth of hypothetical investments of 
$10,000, $50,000 and $100,000 in each Class of shares of the Fund by adding 1 
to the Fund's aggregate total return to date (expressed as a decimal and 
without taking into account the effect of any applicable CDSC) and 
multiplying by $9,475, $48,000 and $97,000 in the case of Class A 
(investments of $10,000, $50,000 and $100,000 adjusted for the initial sales 
charge) or by $10,000, $50,000 and $100,000 in the case of each of Class B, 
Class C and Class D, as the case may be. Based on this calculation, 
investments of $10,000, $50,000 and $100,000 in the Fund at inception would 
have grown to $16,079, $80,395, and $160,790, respectively, at July 31, 1996, 
respectively. This information is for Class B only; there were no other 
Classes of shares outstanding on such date. 
    

   The Fund from time to time may also advertise its performance relative to 
certain performance rankings and indices compiled by independent 
organizations. 

DESCRIPTION OF SHARES OF THE FUND 
- ----------------------------------------------------------------------------- 

   
   The shareholders of the Fund are entitled to a full vote for each full 
share held. All of the Trustees have been elected by the shareholders of the 
Fund, most recently at a Special Meeting of Shareholders held on May 21, 
1997. On that date, Wayne E. Hedien was also elected as a Trustee of the 
Fund, with his term to commence on September 1, 1997. The Trustees themselves 
have the power to alter the number and the terms of office of the Trustees, 
and they may at any time lengthen their own terms or make their terms of 
unlimited duration and appoint their own successors, provided that always at 
least a majority of the Trustees has been elected by the shareholders of the 
Fund. Under certain circumstances the Trustees may be removed by action of 
the Trustees. The shareholders also have the right under certain 
circumstances to remove the Trustees in accordance with the provisions of 
Section 16(c) of the Investment Company Act of 1940. The voting rights of 
shareholders are not cumulative, so that holders of more than 50 percent of 
the shares voting can, if they choose, elect all Trustees being selected, 
while the holders of the remaining shares would be unable to elect any 
Trustees. 
    

   The Fund is not required to hold Annual Meetings of Shareholders and in 
ordinary circumstances the Fund does not intend to hold such meetings. The 
Trustees may call Special Meetings of Shareholders for action by shareholder 
vote as may be required by the Act or the Declaration of Trust. 

   
   The Declaration of Trust permits the Trustees to authorize the creation of 
additional series of shares (the proceeds of which would be invested in 
separate, independently managed portfolios) and additional classes of shares 
within any series. The Trustees have not authorized any such additional 
series or classes of shares other than as set forth in the Prospectus. 
    
                                       43
<PAGE>

   The Declaration of Trust further provides that no Trustee, officer, 
employee or agent of the Fund is liable to the Fund or to a shareholder, nor 
is any Trustee, officer, employee or agent liable to any third persons in 
connection with the affairs of the Fund, except as such liability may arise 
from his or its own bad faith, willful misfeasance, gross negligence, or 
reckless disregard of his duties. It also provides that all third persons 
shall look solely to the Fund's property for satisfaction of claims arising 
in connection with the affairs of the Fund. With the exceptions stated, the 
Declaration of Trust provides that a Trustee, officer, employee or agent is 
entitled to be indemnified against all liability in connection with the 
affairs of the Fund. 

   Under Massachusetts law, shareholders of a business trust may, under 
certain limited circumstances, be held personally liable as partners for 
obligations of the Fund. However, the Declaration of Trust contains an 
express disclaimer of shareholder liability for acts or obligations of the 
Fund, requires that Fund obligations include such disclaimer, and provides 
for indemnification and reimbursement of expenses out of the Fund's property 
for any shareholder held personally liable for the obligations of the Fund. 
Thus, the risk of a shareholder incurring financial loss on account of 
shareholder liability is limited to circumstances in which the Fund itself 
would be unable to meet its obligations. Given the above limitations on 
shareholder personal liability, and the nature of the Fund's assets and 
operations, in the opinion of Massachusetts counsel to the Fund, the risk to 
shareholders of personal liability is remote. 

   The Fund shall be of unlimited duration subject to the provisions in the 
Declaration of Trust concerning termination by action of the shareholders. 

CUSTODIAN AND TRANSFER AGENT 
- ----------------------------------------------------------------------------- 

   The Bank of New York, 90 Washington Street, New York, New York 10286 is 
the Custodian of the Fund's assets. Any Fund cash balances with the Custodian 
in excess of $100,000 are unprotected by Federal deposit insurance. Such 
amounts may, at times, be substantial. 

   
   Dean Witter Trust Company, Harborside Financial Center, Plaza Two, Jersey 
City, New Jersey 07311 is the Transfer Agent of the Fund's shares and 
Dividend Disbursing Agent for payment of dividends and distributions on Fund 
shares and Agent for shareholders under various investment plans described 
herein. Dean Witter Trust Company is an affiliate of Dean Witter Distributors 
Inc., the Fund's Distributor and Dean Witter InterCapital Inc. the Investment 
Manager. As Transfer Agent and Dividend Disbursing Agent, Dean Witter Trust 
Company's responsibilities include maintaining shareholder accounts, 
disbursing cash dividends and reinvesting dividends, processing account 
registration changes, handling purchase and redemption transactions, mailing 
prospectuses and reports, mailing and tabulating proxies, processing share 
certificate transactions, and maintaining shareholder records and lists. For 
these services Dean Witter Trust Company receives a per shareholder account 
fee from the Fund. 
    

INDEPENDENT ACCOUNTANTS 
- ----------------------------------------------------------------------------- 

   Price Waterhouse LLP serves as the independent accountants of the Fund. 
The independent accountants are responsible for auditing the annual financial 
statements of the Fund. 

REPORTS TO SHAREHOLDERS 
- ----------------------------------------------------------------------------- 

   The Fund will send to shareholders, at least semi-annually, reports 
showing the Fund's portfolio and other information. An annual report, 
containing financial statements audited by independent accountants, will be 
sent to shareholders each year. 

   The Fund's fiscal year ends on July 31. The financial statements of the 
Fund must be audited at least once a year by independent accountants whose 
selection is made annually by the Fund's Board of Trustees. 

                                       44
<PAGE>

LEGAL COUNSEL 
- ----------------------------------------------------------------------------- 

   
   Barry Fink, Esq., who is an officer and the General Counsel of the 
Investment Manager, is an officer and the General Counsel of the Fund. 
    

EXPERTS 
- ----------------------------------------------------------------------------- 

   The Annual Financial Statements of the Fund for the year ended July 31, 
1996, included in this Statement of Additional Information and incorporated 
by reference in the Prospectus, have been so included and incorporated in 
reliance on the report of Price Waterhouse LLP, independent accountants, 
given on the authority of said firm as experts in auditing and accounting. 

REGISTRATION STATEMENT 
- ----------------------------------------------------------------------------- 

   This Statement of Additional Information and the Prospectus do not contain 
all of the Information set forth in the Registration Statement the Fund has 
filed with the Securities and Exchange Commission. The complete Registration 
Statement may be obtained from the Securities and Exchange Commission upon 
payment of the fee prescribed by the rules and regulations of the Commission. 

                                       45
<PAGE>
   
DEAN WITTER HEALTH SCIENCES TRUST
PORTFOLIO OF INVESTMENTS JULY 31, 1996
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
             COMMON STOCKS (96.5%)
             AEROSPACE & DEFENSE (0.0%)
    10,000   BE Aerospace, Inc.*....................  $       152,500
                                                      ---------------
             BIOTECHNOLOGY (11.8%)
    40,000   Advanced Tissue Sciences, Inc.*........          520,000
    40,000   Affymetrix, Inc.*......................          475,000
   150,000   Agouron Pharmaceutical, Inc.*..........        4,593,750
    30,000   Aksys Ltd.*............................          270,000
    70,000   Alexion Pharmaceuticals, Inc.*.........          420,000
   200,000   Alkermes, Inc.*........................        2,450,000
    30,000   Allelix Biopharmaceuticals, Inc.*
             (Canada)...............................          414,817
     7,000   Arthrocare Corp.*......................          112,000
    70,000   Avigen, Inc.*..........................          350,000
   140,000   Biochem Pharma, Inc.*..................        4,147,500
    50,000   Biofield Corp.*........................          468,750
    30,000   Biogen, Inc.*..........................        1,822,500
   140,000   Biomira, Inc.* (Canada)................          760,295
     2,100   Cardiac Pathways Corp.*................           26,250
     8,600   Cardiogenesis Corp.*...................           92,450
    38,571   CardioTech International, Inc.*........           65,089
    40,000   Cardiovascular Dynamics, Inc.*.........          495,000
   120,000   Cell Genesys, Inc.*....................          780,000
    60,000   Centocor, Inc.*........................        1,500,000
   120,000   Cephalon Inc.*.........................        1,875,000
    90,000   Cytotherapeutics, Inc.*................          720,000
    40,100   Cytyc Corp.*...........................          551,375
   160,000   Genzyme Corp.
             General Division*......................        3,960,000
    70,000   Genzyme Corp.
             Tissue Repair Division*................          560,000
   185,000   Gilead Sciences, Inc.*.................        3,422,500
   120,000   Gliatech, Inc.*........................          930,000
    85,000   ID Biomedical Corp.*...................          499,375
   212,000   IDEC Pharmaceuticals Corp.*............        3,233,000
    60,000   Integra Lifesciences Corp.*............          277,500
   125,000   La Jolla Pharmaceutical Co.*...........          554,687
   130,000   Lifecore Biomedical, Inc.*.............        2,096,250
   100,000   Ligand Pharmaceuticals, Inc. (Class
             B)*....................................        1,175,000
    30,000   Liposome Co., Inc.*....................          360,000
   130,000   Matritech, Inc.*.......................        1,413,750
   200,000   Medarex, Inc.*.........................        1,200,000
    60,000   Medimmune, Inc.*.......................          825,000
    78,000   Neurogen Corp.*........................        1,345,500
   105,000   Norland Medical Systems, Inc.*.........        1,417,500
    25,000   Oravax, Inc.*..........................          162,500
    80,000   Pharmacopeia, Inc.*....................          990,000
   200,000   Scios, Inc.*...........................        1,087,500
   120,000   Vertex Pharmaceuticals, Inc.*..........        2,880,000
    73,000   Virus Research Institute, Inc.*........          474,500
    60,000   Visible Genetics Inc.* (Canada)........          585,000
                                                      ---------------
                                                           52,359,338
                                                      ---------------
             COMMERCIAL SERVICES (5.0%)
   157,500   ABR Information Services, Inc.*........        7,835,625
    71,000   Equity Corporation International*......        2,014,625
</TABLE>

<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
    30,000   Interim Services, Inc.*................  $     1,110,000
    90,000   Mecon, Inc.*...........................        1,350,000
    71,000   Medquist, Inc.*........................        1,011,750
     5,400   Pharmaceutical Product Development,
             Inc.*..................................          143,100
   145,000   RTW, Inc.*.............................        4,186,875
    80,000   STAT Healthcare, Inc.*.................          510,000
   126,250   Stewart Enterprises, Inc. (Class A)....        3,282,500
     4,100   The Registry, Inc.*....................          109,675
    30,000   Urocor, Inc.*..........................          348,750
    20,000   Walsh International Inc.*..............          147,500
                                                      ---------------
                                                           22,050,400
                                                      ---------------
             COMPUTER SOFTWARE (4.0%)
    24,000   Apache Medical Systems, Inc.*..........          264,000
   180,000   Base Ten Systems Inc. (Class A)*.......        1,912,500
    85,000   HCIA, Inc.*............................        4,845,000
   120,000   MDL Information Systems, Inc.*.........        3,510,000
   180,000   Medic Computer Systems, Inc.*..........        7,200,000
                                                      ---------------
                                                           17,731,500
                                                      ---------------
             COMPUTER SOFTWARE & SERVICES (1.2%)
    60,000   Dendrite International, Inc.*..........        1,665,000
    30,000   Health Systems Design Corp.*...........          315,000
    30,000   ImageMatrix Corp. (Units)++*...........          127,500
     9,500   Imnet Systems, Inc.*...................          244,625
    40,000   Lanvision Systems, Inc.*...............          370,000
    60,000   Lumisys, Inc.*.........................          607,500
    60,000   Summit Medical Systems, Inc.*..........          975,000
    30,000   Sunquest Information Systems, Inc.*....          356,250
    25,000   Transition Systems, Inc.*..............          475,000
                                                      ---------------
                                                            5,135,875
                                                      ---------------
             COSMETICS (0.0%)
    25,000   Electronic Hair Styling, Inc.*.........          100,000
                                                      ---------------
             DRUGS (4.1%)
   100,000   Alza Corp.*............................        2,475,000
    30,000   Astra AB (ADR) (Sweden)................        1,267,500
   330,000   Dura-Pharmaceuticals, Inc.*............        7,507,500
    50,000   Elan Corp. PLC (ADR)* (Ireland)........        2,937,500
    16,400   Fusion Medical Technologies, Inc.*.....          118,900
   120,000   Nexstar Pharmaceuticals, Inc.*.........        2,040,000
    60,000   Teva Pharmaceutical Industries Ltd.
             (ADR) (Israel).........................        1,935,000
                                                      ---------------
                                                           18,281,400
                                                      ---------------
             ELECTRONICS (0.2%)
    41,200   Del Global Technologies Corp.*.........          329,600
    30,000   Thermospectra Corp.*...................          435,000
                                                      ---------------
                                                              764,600
                                                      ---------------
             HEALTH EQUIPMENT & SERVICES (5.4%)
   110,000   ADAC Laboratories......................        2,131,250
    80,000   Compdent Corp.*........................        2,960,000
    30,000   Matria Healthcare, Inc.*...............          243,750
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       46

<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
PORTFOLIO OF INVESTMENTS JULY 31, 1996, CONTINUED
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
   197,400   Renal Treatment Centers, Inc.*.........  $     5,527,200
   270,000   RoTech Medical Corp.*..................        4,657,500
    70,000   Shared Medical Systems Corp............        3,832,500
    30,000   Sybron International Corp.*............          750,000
    50,000   Ventritex, Inc.*.......................          625,000
   112,700   Vivra, Inc.*...........................        3,282,387
                                                      ---------------
                                                           24,009,587
                                                      ---------------
             HEALTHCARE - DIVERSIFIED (4.1%)
   155,500   Access Health, Inc.*...................        6,569,875
    40,000   Allergan, Inc..........................        1,630,000
    30,000   Envoy Corp.*...........................          705,000
    80,000   Healthsouth Corp.*.....................        2,430,000
   160,000   Mentor Corp............................        4,440,000
   100,000   Universal Health Services, Inc. (Class
             B)*....................................        2,562,500
                                                      ---------------
                                                           18,337,375
                                                      ---------------
             HOSPITAL MANAGEMENT & HEALTH MAINTENANCE ORGANIZATIONS
             (0.6%)
    41,000   Collaborative Clinical Research,
             Inc.*..................................          430,500
    35,500   NCS Healthcare, Inc. (Class A)*........          949,625
   110,000   Raytel Medical Corp.*..................        1,155,000
                                                      ---------------
                                                            2,535,125
                                                      ---------------
             HOSPITAL MANAGEMENT (7.8%)
   180,750   American HomePatient, Inc.*............        4,338,000
    40,000   Caremark International, Inc............          915,000
   100,000   Emeritus Corp.*........................        1,587,500
   100,000   Enterprise Systems, Inc.*..............        1,950,000
   150,000   FPA Medical Management, Inc.*..........        2,850,000
    50,000   Genesis Health Ventures, Inc.*.........        1,256,250
    50,000   Harborside Healthcare Corp.*...........          487,500
    40,000   Impath, Inc.*..........................          550,000
    75,000   Mariner Health Group, Inc.*............        1,340,625
   140,000   Occusystems, Inc.*.....................        3,920,000
   100,000   Pediatric Services of America, Inc.*...        1,987,500
   195,000   PhyCor, Inc.*..........................        5,898,750
   100,000   Physician Reliance Network, Inc.*......        1,325,000
    80,000   Pro-Dex, Inc.*.........................          340,000
    40,000   Renal Care Group, Inc.*................        1,250,000
    30,000   Retirement Care Associates, Inc.*......          270,000
    60,000   Sterling House Corp.*..................          960,000
   110,000   Theratx, Inc.*.........................        1,870,000
    38,600   Total Renal Care Holdings, Inc.*.......        1,379,950
                                                      ---------------
                                                           34,476,075
                                                      ---------------
             MANUFACTURING (0.7%)
    67,500   Memtec Ltd. (ADR) (Australia)..........        1,999,687
    45,000   Waters Corp.*..........................        1,260,000
                                                      ---------------
                                                            3,259,687
                                                      ---------------
             MEDICAL EQUIPMENT (2.9%)
    40,000   Advanced Magnetics, Inc.*..............          710,000
    60,000   Endovascular Technologies, Inc.*.......          757,500
    14,000   Innovasive Devices, Inc.*..............          140,000
</TABLE>

<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
    30,000   Interpore International*...............  $       168,750
   300,000   Orthologic Corp.*......................        2,550,000
   100,000   Sofamor Danek Group, Inc.*.............        2,637,500
   100,000   Steris Corp.*..........................        2,900,000
    90,000   Thermo Cardiosystems, Inc.*............        2,880,000
                                                      ---------------
                                                           12,743,750
                                                      ---------------
             MEDICAL PRODUCTS & SUPPLIES (24.5%)
    20,000   Advanced Technology Laboratories,
             Inc.*..................................          645,000
    80,000   Aequitron Medical, Inc.*...............          560,000
   255,000   Angeion Corp.*.........................        1,561,875
    25,000   Aradigm Corp.*.........................          209,375
   150,000   ATS Medical, Inc.*.....................        1,256,250
    75,000   Autonomous Technologies Corp.*.........          300,000
    55,000   Biosource International, Inc.*.........          340,313
    50,000   Calypte Biomedical Corp.*..............          312,500
   160,000   Capstone Pharmacy Services, Inc.*......        1,680,000
   110,000   ClinTrials Research Inc.*..............        4,015,000
   100,000   Coherent, Inc.*........................        3,875,000
    50,000   Cohr, Inc.*............................        1,087,500
    12,000   Conceptus Inc.*........................          102,000
    82,500   Conmed Corp.*..........................        1,402,500
   200,000   Cryolife, Inc.*........................        2,500,000
     7,500   De Rigo SpA (ADR)* (Italy).............          136,875
    20,000   Electroscope, Inc.*....................          160,000
   100,000   EP MedSystems, Inc.*...................          550,000
    25,000   General Surgical Innovations, Inc.*....          303,125
   120,000   Guidant Corp...........................        6,090,000
    25,000   Gynecare, Inc.*........................          115,625
    80,000   Hanger Orthopedic Group, Inc.*.........          470,000
     5,500   Heartport, Inc.*.......................          127,875
    50,000   Hologic, Inc.*.........................        1,887,500
   150,000   ICU Medical, Inc.*.....................        1,256,250
   140,000   IDEXX Laboratories, Inc.*..............        5,355,000
    40,000   Imagyn Medical, Inc.*..................          280,000
   120,000   Immunomedics, Inc.*....................          855,000
   140,000   Innerdyne, Inc.*.......................          455,000
    75,000   Intelligent Medical Imaging, Inc.*.....        1,275,000
    50,000   Invacare Corp..........................        1,450,000
    90,000   IRIDEX Corp.*..........................          675,000
   140,000   Kensey Nash Corp.*.....................        1,645,000
   120,000   Kinetic Concepts, Inc..................        1,665,000
    40,000   Laser Industries, Ltd.* (Israel).......          500,000
   111,000   Life Medical Sciences, Inc.*...........          721,500
   100,000   Lincare Holdings, Inc.*................        3,875,000
   185,000   Lunar Corp.*...........................        6,428,750
   170,000   Med-Design Corp.*......................        2,167,500
   100,000   Millipore Corp.........................        3,412,500
   110,000   Minimed Inc.*..........................        2,392,500
    60,000   Minntech Corp..........................          615,000
    80,000   Neurobiological Technologies, Inc.*....          350,000
   120,000   Neuromedical Systems, Inc.*............        1,710,000
    40,000   Novoste Corp.*.........................          320,000
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       47

<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
PORTFOLIO OF INVESTMENTS JULY 31, 1996, CONTINUED
<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
   220,000   Omnicare, Inc..........................  $     5,142,500
   100,000   Oncogene Science, Inc.*................          737,500
    10,000   Perclose, Inc.*........................          190,000
   170,000   Physician Sales & Service, Inc.*.......        2,911,250
    25,000   Physiometrix, Inc.*....................          137,500
   150,000   PLC Systems, Inc.* (Canada)............        2,437,500
    80,000   Polymedica Industries, Inc.*...........          400,000
   100,000   Possis Medical, Inc.*..................        1,487,500
   130,000   Protocol Systems, Inc.*................        2,258,750
    80,000   Quidel Corp.*..........................          300,000
   150,000   Sano Corp.*............................        1,912,500
    85,000   Serologicals Corp.*....................        2,125,000
    40,000   Sight Resource Corp. (Units)++*........          312,500
    70,400   Spine-Tech Inc.*.......................        1,777,600
   160,000   Staar Surgical Co.*....................        2,000,000
    90,000   Target Therapeutics, Inc.*.............        2,835,000
   170,000   Thermolase Corp.*......................        3,782,500
    30,000   Thoratec Laboratories Corp.*...........          315,000
    40,000   Ultrafem, Inc.*........................          620,000
    60,000   United States Surgical Corp............        2,055,000
    36,000   Urologix, Inc.*........................          513,000
   140,000   Uromed Corp.*..........................        1,785,000
    40,000   Ventana Medical Systems, Inc.*.........          395,000
     2,000   VISX, Inc.*............................           36,500
   130,000   Vivus, Inc.*...........................        4,680,000
                                                      ---------------
                                                          108,239,413
                                                      ---------------
             MEDICAL SERVICES (4.6%)
   135,000   Health Management Systems, Inc.*.......        4,083,750
    40,000   Housecall Medical Resources, Inc.*.....          620,000
   130,000   Medaphis Corp.*........................        4,793,750
    30,000   Medical Resources, Inc.*...............          213,750
    90,000   NABI, Inc.*............................          787,500
    20,000   Phoenix International Life Sciences,
             Inc.* (Canada).........................          203,768
   115,000   Prime Medical Services, Inc.*..........        1,566,875
   100,000   Quintiles Transnational Corp.*.........        6,950,000
    80,000   Zoll Medical Corp.*....................        1,180,000
                                                      ---------------
                                                           20,399,393
                                                      ---------------
             MULTI-LINE INSURANCE (0.2%)
    20,000   United Dental Care, Inc.*..............          680,000
                                                      ---------------
             PERSONAL PRODUCTS (0.7%)
    50,000   National Dentex Corp.*.................        1,087,500
   100,000   Nature's Sunshine Products, Inc........        2,200,000
                                                      ---------------
                                                            3,287,500
                                                      ---------------
             PHARMACEUTICALS (17.1%)
   160,000   Alliance Pharmaceutical Corp.*.........        2,280,000
    80,000   Amrion, Inc.*..........................        1,290,000
    60,000   Andrx Corp.*...........................          795,000
    60,000   Aronex Pharmaceuticals, Inc.*..........          442,500
    40,000   Arris Pharmaceutical Corp.*............          445,000
    50,000   Biotransplant, Inc.*...................          318,750
<PAGE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
   248,968   Biovail Corporation International*.....  $     6,597,652
   167,500   Bone Care International, Inc.*.........        1,130,625
    25,000   Cima Labs, Inc.*.......................          162,500
    60,000   Collagenex Pharmaceuticals, Inc.*......          517,500
   160,000   Curative Health Services, Inc.*........        2,800,000
   100,000   Cygnus, Inc.*..........................        1,400,000
   150,000   Cypros Pharmaceutical Corp.*...........          637,500
    80,000   Cytel Corp.*...........................          290,000
   100,000   Depotech Corp.*........................        1,800,000
   110,000   Ergo Science Corp.*....................        1,540,000
    20,000   Flamel Technologies (ADR)* (France)....          145,000
   100,000   Fuisz Technologies Ltd.*...............        1,775,000
    25,000   Geltex Pharmaceuticals, Inc.*..........          293,750
    56,000   Genset (ADR)* (France).................        1,029,000
   265,000   Guilford Pharmaceuticals, Inc.*........        5,565,000
    50,000   Houghten Pharmaceuticals, Inc.*........          250,000
    50,000   Hyal Pharmaceutical Corp.* (Canada)....          385,707
   120,000   ICOS Corp.*............................          795,000
   130,000   Imclone Systems, Inc.*.................          845,000
   100,000   Incyte Pharmaceuticals, Inc.*..........        3,762,500
    50,000   Inhale Therapeutic Systems*............          768,750
    40,000   Intercardia, Inc.*.....................          800,000
   125,000   Interferon Sciences, Inc.*.............          171,875
   165,100   Interneuron Pharmaceuticals, Inc.*.....        4,457,700
    97,500   Jones Medical Industries, Inc..........        3,339,375
   100,000   Labopharm Inc.* (Canada)...............          473,037
    80,000   Martek Biosciences Corp.*..............        2,000,000
    50,000   Matrix Pharmaceutical, Inc.*...........          537,500
   150,000   Medicis Pharmaceutical Corp. (Class A)*        6,975,000
    50,000   Microcide Pharmaceuticals, Inc.*.......          500,000
    20,000   Millennium Pharmaceuticals, Inc.*......          300,000
    50,000   Neose Technologies, Inc.*..............          687,500
    35,300   Neurocrine Bioscience, Inc.*...........          282,400
   210,000   North American Vaccine, Inc.*..........        3,333,750
    75,000   NPS Pharmaceuticals, Inc.*.............          750,000
    40,000   Onyx Pharmaceuticals, Inc.*............          305,000
   100,000   Orphan Medical, Inc.*..................          712,500
    70,000   Parexel International Corp.*...........        2,800,000
    67,000   Pathogenesis Corp.*....................          804,000
    20,000   PDT, Inc.*.............................          665,000
    25,000   Pharmacyclics, Inc.*...................          318,750
    70,000   Regeneron Pharmaceuticals, Inc.*.......        1,085,000
    75,000   Ribozyme Pharmaceuticals, Inc.*........          881,250
   100,000   Sangstat Medical Corp.*................        1,537,500
    50,000   Sciclone Pharmaceuticals, Inc.*........          606,250
   100,000   Sequus Pharmaceuticals, Inc.*..........        1,450,000
     5,000   SIBIA Neurosciences, Inc.*.............           36,250
    90,000   SuperGen, Inc.*........................        1,035,000
   120,000   Zila, Inc.*............................          900,000
                                                      ---------------
                                                           75,806,371
                                                      ---------------
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       48

<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
PORTFOLIO OF INVESTMENTS JULY 31, 1996, CONTINUED

<TABLE>
<CAPTION>
 NUMBER OF
  SHARES                                                   VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
             RETAIL - SPECIALTY (1.6%)
   110,000   Cole National Corp. (Class A)*.........  $     1,842,500
   180,000   Rexall Sundown, Inc.*..................        5,175,000
                                                      ---------------
                                                            7,017,500
                                                      ---------------
             TOTAL COMMON STOCKS
             (IDENTIFIED COST $339,052,652).........      427,367,389
                                                      ---------------
</TABLE>

<TABLE>
<CAPTION>
 NUMBER OF
 WARRANTS                                                  VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
             WARRANTS (0.0%)
             MEDICAL PRODUCTS & SUPPLIES (0.0%)
    70,000   ATS Medical, Inc.
             (due 03/02/97)*........................           39,375
                                                      ---------------
             PHARMACEUTICALS (0.0%)
    30,000   SuperGen, Inc.
             (due 03/12/01)*........................          159,375
                                                      ---------------
             TOTAL WARRANTS
             (IDENTIFIED COST $43,448)..............          198,750
                                                      ---------------
</TABLE>

<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS                                                 VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>
             SHORT-TERM INVESTMENTS (4.1%)
             COMMERCIAL PAPER (a) (4.0%)
             AUTOMOTIVE - FINANCE
 $  17,500   Ford Motor Credit Co.
             5.63% due 08/01/96.....................       17,500,000
                                                      ---------------
</TABLE>

<TABLE>
<CAPTION>
 PRINCIPAL
 AMOUNT IN
 THOUSANDS                                                 VALUE
- ---------------------------------------------------------------------
<C>          <S>                                      <C>

             REPURCHASE AGREEMENT (0.1%)
 $     292   The Bank of New York 5.75% due 08/01/96
             (dated 07/31/96; proceeds $291,826;
             collateralized by $347,946 Federal Home
             Loan Mortgage Corp. 6.50% due 12/15/23
             valued at $297,615) (Identified Cost
             $291,779)..............................  $       291,779
                                                      ---------------
             TOTAL SHORT-TERM INVESTMENTS
             (IDENTIFIED COST $17,791,779)..........       17,791,779
                                                      ---------------

TOTAL INVESTMENTS
(IDENTIFIED COST $356,887,879)
(B)............................      100.6%   445,357,918

LIABILITIES IN EXCESS OF OTHER
ASSETS.........................       (0.6)    (2,482,340)
                                     -----   ------------
NET ASSETS.....................      100.0%  $442,875,578
                                     =====   ============
<PAGE>
<FN>
- ---------------------
ADR  American Depository Receipt.
 *   Non-income producing security.
++   Consists of more than one class of securities traded together as a unit;
     generally stocks with attached warrants.
(a)  Security was purchased on a discount basis. The interest rate shown has
     been adjusted to reflect a money market equivalent yield.
(b)  The aggregate cost for federal income tax purposes is 357,356,015; the
     aggregate gross unrealized appreciation is $117,721,053 and the aggregate
     gross unrealized depreciation is $29,719,150, resulting in net unrealized
     appreciation of $88,001,903.
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       49
<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
FINANCIAL STATEMENTS

STATEMENT OF ASSETS AND LIABILITIES
JULY 31, 1996

<TABLE>
<S>                                                           <C>
ASSETS:
Investments in securities, at value
  (identified cost $356,887,879)............................  $445,357,918
Receivable for:
    Investments sold........................................     3,503,629
    Shares of beneficial interest sold......................     1,820,941
Deferred organizational expenses............................        40,256
Prepaid expenses and other assets...........................       116,116
                                                              ------------
     TOTAL ASSETS...........................................   450,838,860
                                                              ------------
LIABILITIES:
Payable for:
    Investments purchased...................................     6,708,939
    Plan of distribution fee................................       422,109
    Investment management fee...............................       422,013
    Shares of beneficial interest repurchased...............       215,916
Accrued expenses............................................       194,305
                                                              ------------
     TOTAL LIABILITIES......................................     7,963,282
                                                              ------------
NET ASSETS:
Paid-in-capital.............................................   337,418,795
Net unrealized appreciation.................................    88,470,039
Accumulated net investment loss.............................       (28,348)
Accumulated undistributed net realized gain.................    17,015,092
                                                              ------------
     NET ASSETS.............................................  $442,875,578
                                                              ------------
                                                              ------------
NET ASSET VALUE PER SHARE,
  29,593,202 SHARES OUTSTANDING (UNLIMITED SHARES AUTHORIZED
  OF
  $.01 PAR VALUE)...........................................
                                                                    $14.97
                                                              ------------
                                                              ------------
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       50

<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
FINANCIAL STATEMENTS, CONTINUED

STATEMENT OF OPERATIONS
FOR THE YEAR ENDED JULY 31, 1996

<TABLE>
<CAPTION>
NET INVESTMENT INCOME:
INCOME
<S>                                                           <C>
Interest....................................................  $   392,106
Dividends (net of $8,781 foreign withholding tax)...........      288,598
                                                              -----------
     TOTAL INCOME...........................................      680,704
                                                              -----------
EXPENSES
Plan of distribution fee....................................    3,864,860
Investment management fee...................................    3,862,384
Transfer agent fees and expenses............................      500,280
Registration fees...........................................       69,849
Custodian fees..............................................       62,139
Shareholder reports and notices.............................       54,864
Professional fees...........................................       37,201
Organizational expenses.....................................       32,310
Trustees' fees and expenses.................................       27,958
Other.......................................................        5,651
                                                              -----------
     TOTAL EXPENSES.........................................    8,517,496
                                                              -----------
     NET INVESTMENT LOSS....................................   (7,836,792)
                                                              -----------
NET REALIZED AND UNREALIZED GAIN:
Net realized gain...........................................   38,104,756
Net change in unrealized appreciation.......................   16,813,336
                                                              -----------
     NET GAIN...............................................   54,918,092
                                                              -----------
NET INCREASE................................................  $47,081,300
                                                              -----------
                                                              -----------
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       51

<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
FINANCIAL STATEMENTS, CONTINUED

STATEMENT OF CHANGES IN NET ASSETS

<TABLE>
<CAPTION>
                                                              FOR THE YEAR
                                                                 ENDED
                                                                JULY 31,
FOR THE YEAR ENDED
                                                                  1996
JULY 31, 1995
- -------------------------------------------------------------------------------------------------
<S>                                                           <C>            <C>
INCREASE (DECREASE) IN NET ASSETS:
OPERATIONS:
Net investment loss.........................................  $ (7,836,792)  $ (5,067,553)
Net realized gain...........................................    38,104,756     28,063,934
Net change in unrealized appreciation.......................    16,813,336     57,548,396
                                                              ------------   --------------------
     NET INCREASE...........................................    47,081,300     80,544,777
Distributions from net realized gain........................   (22,643,391)         --
Net increase (decrease) from transactions in shares of
  beneficial interest.......................................   144,702,568   (35,383,030)
                                                              ------------   --------------------
     TOTAL INCREASE.........................................   169,140,477    45,161,747
NET ASSETS:
Beginning of period.........................................   273,735,101   228,573,354
                                                              ------------   --------------------
     END OF PERIOD
    (INCLUDING ACCUMULATED NET INVESTMENT LOSS OF $28,348
    AND $18,664, RESPECTIVELY)..............................  $442,875,578   $ 273,735,101
                                                              ------------   --------------------
                                                              ------------   --------------------
</TABLE>

                                       52

                       SEE NOTES TO FINANCIAL STATEMENTS

<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST
NOTES TO FINANCIAL STATEMENTS July 31, 1996


1. Organization and Accounting Policies 

Dean Witter Health Sciences Trust (the "Fund") is registered under 
the Investment Company Act of 1940, as amended (the "Act"), as 
a non-diversified, open-end management investment company.  The
Fund's investment objective is capital appreciation.  The Fund seeks to achieve
its objective by investing in securities of companies in the health sciences
industry throughout the world. The Fund was organized as a Massachusetts
business trust on May 26, 1992 and commenced operations on October 30, 1992.

The preparation of financial statements in accordance with generally
accepted accounting principles requires management to make estimates and
assumptions that affect the reported amounts and disclosures.  Actual results
could differ from those estimates.  The following is a summary of significant
accounting policies:

A. Valuation of Investments -- (1) an equity security listed or traded on the 
New York or American Stock Exchange or other domestic or foreign stock exchange 
is valued at its latest sale price on that exchange prior to the time when 
assets are valued; if there were no sales that day, the security is valued at 
the latest bid price; (2) all other portfolio securities for which 
over-the-counter market quotations are readily available are valued at the 
latest available bid price prior to the time of valuation; (3) when 
market quotations are not readily available, including circumstances 
under which it is determined by the Investment Manager that sale or 
bid prices are not reflective of a security's market value, portfolio 
securities are valued at their fair value as determined in good 
faith under procedures established by and under the general supervision
of the Trustees (valuation of debt securities for which market quotations are
not readily available may be based upon current market prices of securities
which are comparable in coupon, rating and maturity or an appropriate matrix
utilizing similar factors); (4) short-term debt securities having a maturity
date of more than sixty days at time of purchase are valued on a mark-to-market
basis until sixty days prior to maturity and thereafter at amortized cost based
on their value on the 61st day.  Short-term debt securities having a maturity
date of sixty days or less at the time of purchase are valued at amortized cost;
and (5) the market value of foreign denominated portfolio securities is
translated at the exchange rate prevailing at the end of the period.

B. Accounting for Investments -- Security transactions are accounted for on the
trade date (date the order to buy or sell is executed).  Realized gains and
losses on security transactions are determined by the identified cost method.
Dividend income and other distributions are recorded on the ex-dividend date.
Discounts are accreted over the life of the respective securities.  Interest
income is accrued daily.


                             53
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST
NOTES TO FINANCIAL STATEMENTS July 31, 1996, continued


C. Federal Income Tax Status -- It is the Fund's policy to comply with the
requirements of the Internal Revenue Code applicable to regulated investment
companies and to distribute all of its taxable income to its shareholders.
Accordingly, no federal income tax provision is required.

D. Dividends and Distributions to Shareholders -- The Fund records dividends and
distributions to its shareholders on the ex-dividend date.  The amount of
dividends and distributions from net investment income and net realized capital
gains are determined in accordance with federal income tax regulations which may
differ from generally accepted accounting principles.  These "book/tax"
differences are either considered temporary or permanent in nature.  To the
extent these differences are permanent in nature, such amounts are reclassified
within the capital accounts based on their federal tax-basis treatment;
temporary differences do not require reclassification.  Dividends and
distributions which exceed net investment income and net realized capital gains
for financial reporting purposes but not for tax purposes are reported as
dividends in excess of net investment income or distributions in excess of net
realized capital gains.  To the extent they exceed net investment income and net
realized capital gains for tax purposes, they are reported as distributions of
paid-in-capital.

E. Organizational Expenses - Dean Witter InterCapital Inc. (the "Investment
Manager") paid the organizational expenses of the Fund in the amount of
approximately $162,000 and was reimbursed for the full amount thereof. Such
expenses have been deferred and are being amortized on the straight-line method
over a period not to exceed five years from the commencement of operations.

2. Investment Management Agreement 

Pursuant to an Investment Management Agreement, the Fund 
pays the Investment Manager a management fee, accrued daily
and payable monthly. Prior to April 30, 1996, the Fund paid an annual rate of
1.0% of daily net assets determined at the close of each business day. Effective
May 1, 1996, the fee changed to the following annual rates which are also
applied to the net assets of the Fund determined at the close of each business
day: 1.0% to the portion of daily net assets not exceeding $500 million and
0.95% to the portion of daily net assets exceeding $500 million.

Under the terms of the Agreement, in addition to managing the Fund's
investments, the Investment Manager maintains certain of the Fund's books and
records and furnishes, at its own expense, office space, facilities, equipment,
clerical, bookkeeping and certain legal services and pays the salaries of all
personnel, including officers of the Fund who are employees of the Investment
Manager.  The Investment Manager also bears the cost of telephone services,
heat, light, power and other utilities provided to the Fund.

                                  54
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST
NOTES TO FINANCIAL STATEMENTS July 31, 1996, continued


3. Plan of Distribution 

Shares of the Fund are distributed by Dean Witter
Distributors Inc. (the "Distributor"), an affiliate of the Investment Manager.
The Fund has adopted a Plan of Distribution (the "Plan") pursuant to Rule 12b-1
under the Act pursuant to which the Fund pays the Distributor compensation,
accrued daily and payable monthly, at an annual rate of 1.0% of the lesser of:
(a) the average daily aggregate gross sales of the Fund's shares since the
Fund's inception (not including reinvestment of dividend or capital gain
distributions) less the average daily aggregate net asset value of the Fund's
shares redeemed since the Fund's inception upon which a contingent deferred
sales charge has been imposed or upon which such charge has been waived; or (b)
the Fund's average daily net assets.  Amounts paid under the Plan are paid to
the Distributor to compensate it for the services provided and the expenses
borne by it and others in the distribution of the Fund's shares, including the
payment of commissions for sales of the Fund's shares and incentive compensation
to, and expenses of, the account executives of Dean Witter Reynolds Inc.
("DWR"), an affiliate of the Investment Manager and Distributor, and other
employees or selected broker-dealers who engage in or support distribution of
the Fund's shares or who service shareholder accounts, including overhead and
telephone expenses, printing and distribution of prospectuses and reports used
in connection with the offering of the Fund's shares to other than current
shareholders and preparation, printing and distribution of sales literature and
advertising materials.  In addition, the Distributor may be compensated under
the Plan for its opportunity costs in advancing such amounts, which compensation
would be in the form of a carrying charge on any unreimbursed expenses incurred
by the Distributor.

Provided that the Plan continues in effect, any cumulative expenses
incurred but not yet recovered, may be recovered through future distribution
fees from the Fund and contingent deferred sales charges from the Fund's
shareholders.

Although there is no legal obligation for the Fund to pay expenses
incurred in excess of payments made to the Distributor under the Plan and the
proceeds of contingent deferred sales charges paid by investors upon redemption
of shares, if for any reason the Plan is terminated, the Trustees will consider
at that time the manner in which to treat such expenses. The Distributor has
advised the Fund that such excess amounts, including carrying charges, totaled
$16,178,097 at July 31, 1996.

The Distributor has informed the Fund that for the year ended July
31, 1996, it received approximately $610,000 in contingent deferred sales
charges from certain redemptions of the Fund's shares.

                                 55
<PAGE>
DEAN WITTER HEALTH SCIENCES TRUST
NOTES TO FINANCIAL STATEMENTS July 31, 1996, continued


4. Security Transactions and Transactions with Affiliates 

The cost of purchases and proceeds from sales of portfolio securities, 
excluding short-term investments, for the year ended July 31, 1996 aggregated 
$344,533,358 and $240,556,519, respectively.

For the year ended July 31, 1996, the Fund incurred brokerage
commissions of $9,000 with DWR for portfolio transactions executed on behalf of
the Fund.

Dean Witter Trust Company, an affiliate of the Investment Manager
and Distributor, is the Fund's transfer agent.  At July 31, 1996, the Fund had
transfer agent fees and expenses payable of approximately $52,000.

The Fund has an unfunded noncontributory defined benefit pension
plan covering all independent Trustees of the Fund who will have served as
independent Trustees for at least five years at the time of retirement.
Benefits under this plan are based on years of service and compensation during
the last five years of service.  Aggregate pension costs for the year ended July
31, 1996 included in Trustees' fees and expenses in the Statement of Operations
amounted to $10,608.  At July 31, 1996, the Fund had an accrued pension
liability of $28,348 which is included in accrued expenses in the Statement of
Assets and Liabilities.

5.  Shares of Beneficial Interest 

Transactions in shares of beneficialinterest were as follows:

<TABLE>
<CAPTION>

                                    FOR THE YEAR                FOR THE YEAR
                                       ENDED                        ENDED
                                    JULY 31,1996                JULY 31, 1995
                              --------------------------   --------------------------
                                SHARES         AMOUNT        SHARES         AMOUNT
                              ----------    ------------   ----------    ------------
<S>                         <C>            <C>             <C>          <C>
Sold                          26,005,478    $429,545,190   12,330,853   $136,338,116
Reinvestment of distributions  1,434,910      21,121,878         _              _
                              ----------    ------------   ----------    ------------
                              27,440,388     450,667,068   12,330,853     136,338,116
Repurchased                  (19,102,244)   (305,964,500) (15,613,260)   (171,721,146)
                              ----------    ------------   ----------    ------------
Net increase (decrease)        8,338,144    $144,702,568   (3,282,407)   $(35,383,030)
                              ==========    ============   ==========    ============
</TABLE>

6. Federal Income Tax Status 

As of July 31, 1996, the Fund had temporary book/tax differences primarily 
attributable to capital loss deferrals on wash sales and permanent book/tax 
differences attributable to a net operating loss. To reflect reclassifications 
arising from permanent book/tax differences for the year ended July 31, 1996, 
accumulated undistributed net realized gain was charged and accumulated net 
investment loss was credited $7,827,108. 

                                   56

<PAGE>

Dean Witter Health Sciences Trust 
Financial Highlights

Selected ratios and per share data for a share of beneficial
interest outstanding throughout each period:
<TABLE>
<CAPTION>

                                                                              FOR THE PERIOD
                                             FOR THE YEAR ENDED JULY 31      OCTOBER 30, 1992*
                                             --------------------------           THROUGH
                                              1996       1995      1994        JULY 31, 1993
- -------------------------------------------------------------------------------------------
<S>                                        <C>          <C>       <C>         <C>
PER SHARE OPERATING PERFORMANCE:                                           
Net asset value, beginning of period         $12.88      $9.32      $9.22          $10.00
                                             ------     ------     ------          ------
                                                                          
Net investment loss                           (0.26)     (0.24)     (0.22)          (0.08)
Net realized and unrealized gain (loss)        3.44       3.80       0.32           (0.70)
                                             ------     ------     ------          ------
                                                                          
Total from investment operations               3.18       3.56       0.10           (0.78)
                                             ------     ------     ------          ------

Less distributions from net realized gain     (1.09)        --         --              --
                                             ------     ------     ------          ------

Net asset value, end of period               $14.97     $12.88      $9.32           $9.22
                                             ======     ======      =====           =====

TOTAL INVESTMENT RETURN+                     24.84%      38.20%     1.08%           (7.80)%(1)

RATIOS TO AVERAGE NET ASSETS:                                              

Expenses                                     2.20%       2.30%      2.30%           2.38%(2)
Net investment loss                         (2.03)%     (2.05)%    (2.06)%         (1.38)%(2)

SUPPLEMENTAL DATA:                                                         
Net assets, end of period, 
  in thousands                           $442,876    $273,735   $228,573        $231,646

Portfolio turnover rate                       63%         145%       106%          55%(1)
Average commission rate paid             $0.0562           --         --            --
                                                                          
</TABLE>
* Commencement of operations.

+ Does not reflect the deduction of sales charge. Calculated based on the net
asset value as of the last business day of the period.

(1) Not annualized.

(2) Annualized.

                         See Notes to Financial Statements 

                                      57

<PAGE>




Dean Witter Health Sciences Trust 
Report of Independent Accountants

To the Shareholders and Trustees
of Dean Witter Health Sciences Trust

In our opinion, the accompanying statement of assets and
liabilities, including the portfolio of investments, and the related statements
of operations and of changes in net assets and the financial highlights present
fairly, in all material respects, the financial position of Dean Witter Health
Sciences Trust (the "Fund") at July 31, 1996, the results of its operations for
the year then ended, the changes in its net assets for each of the two years in
the period then ended and the financial highlights for each of the three years
in the period then ended and for the period October 30, 1992 (commencement of
operations) through July 31, 1993, in conformity with generally accepted
accounting principles.  These financial statements and financial highlights
(hereafter referred to as "financial statements") are the responsibility of the
Fund's management; our responsibility is to express an opinion on these
financial statements based on our audits.  We conducted our audits of these
financial statements in accordance with generally accepted auditing standards
which require that we plan and perform the audit to obtain reasonable assurance
about whether the financial statements are free of material misstatement.  An
audit includes examining, on a test basis, evidence supporting the amounts and
disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, and evaluating the overall
financial statement presentation.  We believe that our audits, which included
confirmation of securities at July 31, 1996 by correspondence with the custodian
and brokers and the application of alternative auditing procedures where
confirmations from brokers were not received, provide a reasonable basis for the
opinion expressed above. 

PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
September 13, 1996


                     1996 Federal Tax Notice (unaudited)

          During the year ended July 31, 1996, the Fund paid to its
          shareholders $1.01 per share from long-term capital gains. For such
          period, 15.8% of the income paid qualified for the dividends received
          deduction available to corporations.


                                        58
    
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
PORTFOLIO OF INVESTMENTS January 31, 1997 (unaudited) 

<TABLE>
<CAPTION>
 NUMBER OF 
   SHARES                                                                         VALUE 
- ------------------------------------------------------------------------------------------- 
<S>         <C>                                                              <C>
            COMMON STOCKS (99.4%) 
            Agriculture Related (0.3%) 
    40,000  Delta & Pine Land Co.  .......................................... $  1,495,000 
                                                                             -------------- 
            Biotechnology (20.9%) 
   100,000  Affymetrix, Inc.* ...............................................    2,900,000 
   170,000  Agouron Pharmaceutical, Inc.* ...................................   14,577,500 
    30,000  Aksys Ltd.* .....................................................      375,000 
   150,000  Alexion Pharmaceuticals, Inc.* ..................................    1,818,750 
   250,000  Alkermes, Inc.* .................................................    5,718,750 
    30,000  Allelix Biopharmaceuticals, Inc.* (Canada) ......................      342,832 
   140,000  Biochem Pharma, Inc.* ...........................................    7,857,500 
    60,000  Biofield Corp.* .................................................      682,500 
   220,000  Biomira, Inc.* (Canada) .........................................    1,141,596 
    70,000  Cambridge Heart, Inc.  ..........................................      866,250 
   100,000  Cardiothoracic Systems, Inc. ....................................    2,500,000 
    80,000  Cardiovascular Dynamics, Inc.* ..................................      790,000 
   170,000  Cell Genesys, Inc.* .............................................    1,253,750 
   140,000  Centocor, Inc.* .................................................    5,337,500 
   150,000  Cephalon Inc.* ..................................................    3,881,250 
   100,000  Cytotherapeutics, Inc.* .........................................      987,500 
    50,100  Cytyc Corp.  ....................................................    1,239,975 
    50,000  ESC Medical Systems Ltd.* (Israel) ..............................    1,625,000 
   170,000  Genzyme Corp. General Division* .................................    4,738,750 
   185,000  Gilead Sciences, Inc.* ..........................................    6,035,625 
   120,000  Gliatech, Inc.* .................................................    1,275,000 
   232,000  IDEC Pharmaceuticals Corp.* .....................................    5,365,000 
    75,000  Immune Response Corp.  ..........................................      609,375 
   130,000  Lifecore Biomedical, Inc.* ......................................    2,340,000 
   130,000  Ligand Pharmaceuticals, Inc. (Class B) ..........................    1,803,750 
    60,000  Liposome Co., Inc.* .............................................    1,372,500 
   150,000  Matritech, Inc.* ................................................    1,181,250 
    90,000  Maxim Pharmaceuticals, Inc.  ....................................      686,250 
    60,000  Medimmune, Inc.* ................................................      952,500 
   100,000  Neurogen Corp.* .................................................    1,950,000 
    90,000  Norland Medical Systems, Inc.  ..................................      607,500 
    60,000  OEC Medical Systems, Inc.* ......................................    1,035,000 
    80,000  Pharmacopeia, Inc.  .............................................    1,560,000 
   120,000  Protein Design Labs, Inc.* ......................................    4,110,000 
   200,000  Scios, Inc.* ....................................................    1,187,500 
   140,000  Sepracor Inc.  ..................................................    3,692,500 
   150,000  Vertex Pharmaceuticals, Inc.* ...................................    7,350,000 
   110,000  Virus Research Institute, Inc.  .................................      742,500 
    60,000  Visible Genetics Inc. (Canada) ..................................      465,000 
                                                                             -------------- 
                                                                               102,955,653 
                                                                             -------------- 
            Business Services (0.3%) 
    50,000  Cognizant Corp.* ................................................ $  1,606,250 
                                                                             -------------- 
            Chemicals (0.2%) 
    40,000  Fresenius Medical Care AG (ADR)(Germany) ........................    1,190,000 
                                                                             -------------- 
            Commercial Services (4.9%) 
   127,500  ABR Information Services, Inc.* .................................    5,578,125 
    33,000  Advanced Health Corp.  ..........................................      379,500 
    20,000  American Medical Response, Inc.  ................................      795,000 
    40,000  Complete Management, Inc.  ......................................      515,000 
   150,000  Equity Corporation International* ...............................    2,943,750 
    60,000  Interim Services, Inc.* .........................................    2,175,000 
   100,000  Medquist, Inc.* .................................................    2,475,000 
    30,000  Pharmaceutical Product Development, Inc.  .......................      855,000 
    70,000  Physician Support Systems, Inc.  ................................    1,225,000 
    97,000  RTW, Inc.* ......................................................    1,200,375 
   156,250  Stewart Enterprises, Inc. (Class A) .............................    5,507,812 
    40,000  Urocor, Inc.* ...................................................      410,000 
    20,000  Walsh International Inc.* .......................................      157,500 
                                                                             -------------- 
                                                                                24,217,062 
                                                                             -------------- 
            Computer Software (2.7%) 
    80,000  Apache Medical Systems, Inc .....................................      450,000 
    20,000  HCIA, Inc.* .....................................................      765,000 
   130,000  Healthdyne Information Enterprises, Inc.  .......................      771,875 
   120,000  MDL Information Systems, Inc.* ..................................    2,640,000 
   180,000  Medic Computer Systems, Inc.* ...................................    6,975,000 
    60,000  QuadraMed Corp.  ................................................      697,500 
    60,000  Tripos, Inc.  ...................................................    1,140,000 
                                                                             -------------- 
                                                                                13,439,375 
                                                                             -------------- 
            Computer Software & Services (0.5%) 
    30,000  Health Systems Design Corp.  ....................................      255,000 
    50,000  ImageMatrix Corp. (Units)+* .....................................      153,125 
    40,000  Lanvision Systems, Inc.* ........................................      285,000 
   100,000  Sunquest Information Systems, Inc.* .............................    1,575,000 
                                                                             -------------- 
                                                                                 2,268,125 
                                                                             -------------- 
            Drugs (4.9%) 
    30,000  Atrix Laboratories, Inc.  .......................................      375,000 
   100,000  Columbia Laboratories, Inc.  ....................................    1,487,500 
   280,000  Dura-Pharmaceuticals, Inc.* .....................................   11,760,000 
   110,000  Elan Corp. PLC (ADR)* (Ireland) .................................    4,235,000 
   100,000  Labopharm Inc.* (Canada) ........................................      489,760 
   160,000  Nexstar Pharmaceuticals, Inc.* ..................................    2,400,000 

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       59
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
PORTFOLIO OF INVESTMENTS January 31, 1997 (unaudited) continued 

 NUMBER OF 
   SHARES                                                                         VALUE 
- ------------------------------------------------------------------------------------------- 
    20,000  Scherer (R.P.) Corp.* ...........................................  $ 1,132,500 
    40,000  Teva Pharmaceutical Industries Ltd. (ADR)(Israel) ...............    2,180,000 
                                                                             -------------- 
                                                                                24,059,760 
                                                                             -------------- 
            Electronics (0.2%) 
    42,436  Del Global Technologies Corp.* ..................................      381,924 
    40,000  Galileo Corp. ...................................................      740,000 
                                                                             -------------- 
                                                                                 1,121,924 
                                                                             -------------- 
            Finance (0.1%) 
    45,000  HealthCare Financial Partners, Inc.  ............................      697,500 
                                                                             -------------- 
            Health Equipment & Services (3.5%) 
    70,000  ADAC Laboratories ...............................................    1,732,500 
    30,000  Matria Healthcare, Inc.* ........................................      150,000 
   197,400  Renal Treatment Centers, Inc.  ..................................    5,551,875 
   270,000  RoTech Medical Corp.* ...........................................    4,657,500 
    60,000  Sybron International Corp.* .....................................    1,852,500 
   100,000  Vivra, Inc.* ....................................................    3,050,000 
                                                                             -------------- 
                                                                                16,994,375 
                                                                             -------------- 
            Healthcare (0.5%) 
   100,000  Allegiance Corp. ................................................    2,562,500 
                                                                             -------------- 
            Healthcare-Diversified (2.3%) 
    30,000  Foundation Health Corp.  ........................................      997,500 
   110,000  Healthsouth Corp.* ..............................................    4,798,750 
   100,000  Mentor Corp.  ...................................................    2,812,500 
   100,000  Universal Health Services, Inc. (Class B)* ......................    2,900,000 
                                                                             -------------- 
                                                                                11,508,750 
                                                                             -------------- 
            Healthcare-Miscellaneous (0.4%) 
    15,000  Cornell Corrections, Inc.  ......................................      161,250 
    70,000  MedPartners, Inc.  ..............................................    1,303,750 
    20,500  Trigon Healthcare, Inc.  ........................................      363,875 
                                                                             -------------- 
                                                                                 1,828,875 
                                                                             -------------- 
            Hospital Management (4.7%) 
   180,750  American HomePatient, Inc.* .....................................    4,247,625 
   100,000  Enterprise Systems, Inc.* .......................................    2,075,000 
   150,000  FPA Medical Management, Inc.  ...................................    3,693,750 
    50,000  Harborside Healthcare Corp. .....................................      612,500 
    50,000  Impath, Inc.* ...................................................      875,000 
   195,000  PhyCor, Inc.* ...................................................    6,825,000 
    35,000  Pro-Dex, Inc.* ..................................................       72,187 
    75,000  Renal Care Group, Inc.* .........................................    2,700,000 
    50,000  Sterling House Corp.  ...........................................      475,000 
    48,600  Total Renal Care Holdings, Inc.* ................................    1,779,975 
                                                                             -------------- 
                                                                                23,356,037 
                                                                             -------------- 
<PAGE>
            Hospital Management & Health 
            Maintenance Organizations (1.0%) 
   120,000  Collaborative Clinical Research, Inc.* ..........................  $ 1,200,000 
    74,400  NCS Healthcare, Inc. (Class A) ..................................    2,511,000 
   120,000  Raytel Medical Corp.  ...........................................    1,200,000 
                                                                             -------------- 
                                                                                 4,911,000 
                                                                             -------------- 
            Hospital Supply (0.2%) 
   120,000  Boston Biomedica, Inc. ..........................................      960,000 
                                                                             -------------- 
            Life Insurance (0.7%) 
    50,000  CRA Managed Care, Inc.  .........................................    2,425,000 
    70,000  Provident American Corp.  .......................................      910,000 
                                                                             -------------- 
                                                                                 3,335,000 
                                                                             -------------- 
            Manufacturing (0.9%) 
    35,000  Axogen Ltd. (Units)+ ............................................      962,500 
    67,500  Memtec Ltd. (ADR)(Australia) ....................................    1,957,500 
    45,000  Waters Corp.* ...................................................    1,333,125 
                                                                             -------------- 
                                                                                 4,253,125 
                                                                             -------------- 
            Medical Equipment (1.7%) 
    50,000  AccuMed International, Inc.  ....................................      165,625 
    50,000  Applied Imaging Corp.  ..........................................      362,500 
    10,000  Biopsys Medical, Inc.  ..........................................      267,500 
    80,000  Endovascular Technologies, Inc.  ................................      930,000 
   110,000  Steris Corp.* ...................................................    3,245,000 
    30,000  Stryker Corp.  ..................................................      870,000 
    90,000  Thermo Cardiosystems, Inc.* .....................................    2,306,250 
                                                                             -------------- 
                                                                                 8,146,875 
                                                                             -------------- 
            Medical Products & Supplies (19.2%) 
   165,000  Angeion Corp.* ..................................................      804,375 
    80,000  Aradigm Corp.* ..................................................      700,000 
    70,000  ArQule, Inc.  ...................................................    1,487,500 
    60,000  Avecor Cardiovascular, Inc.  ....................................      705,000 
    75,000  Biosource International, Inc.* ..................................      553,125 
    70,000  Calypte Biomedical Corp.* .......................................      472,500 
   192,600  Capstone Pharmacy Services, Inc.* ...............................    2,214,900 
   145,500  ClinTrials Research Inc.* .......................................    4,292,250 
    82,500  Conmed Corp.* ...................................................    1,598,437 
   200,000  Cryolife, Inc.* .................................................    2,075,000 
    30,000  Dentsply International, Inc. ....................................    1,492,500 
   100,000  EP MedSystems, Inc.  ............................................      350,000 
   110,000  Hanger Orthopedic Group, Inc.* ..................................      673,750 
    50,000  Heartport, Inc.* ................................................    1,575,000 
   100,000  I-STAT Corp.* ...................................................    2,725,000 
   130,000  IDEXX Laboratories, Inc.* .......................................    4,225,000 

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       60
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
PORTFOLIO OF INVESTMENTS January 31, 1997 (unaudited) continued 

 NUMBER OF 
   SHARES                                                                         VALUE 
- ------------------------------------------------------------------------------------------- 
    75,000  Imagyn Medical, Inc.* ...........................................  $   684,375 
   120,000  Immunomedics, Inc.* .............................................      712,500 
   150,000  Innerdyne, Inc.* ................................................      562,500 
   110,000  Invacare Corp.  .................................................    2,915,000 
   110,000  IRIDEX Corp.* ...................................................      770,000 
    75,000  Kensey Nash Corp.  ..............................................      900,000 
   120,000  Kinetic Concepts, Inc.  .........................................    1,470,000 
    80,000  Laser Industries, Ltd.* (Israel) ................................      850,000 
    81,000  Life Medical Sciences, Inc.* ....................................      425,250 
   100,000  Lincare Holdings, Inc.* .........................................    3,762,500 
   170,000  Med-Design Corp.  ...............................................    1,147,500 
   120,000  Minimed Inc.  ...................................................    3,990,000 
    20,000  Minntech Corp.  .................................................      210,000 
    40,000  NewVision Technology, Inc. (Units)+* ............................      235,000 
   100,000  Novoste Corp.  ..................................................    1,675,000 
   220,000  Omnicare, Inc.  .................................................    6,077,500 
   100,000  Oncogene Science, Inc.  .........................................      750,000 
   150,000  PLC Systems, Inc.* (Canada) .....................................    3,712,500 
   120,000  Possis Medical, Inc.* ...........................................    2,235,000 
   100,000  ResMed, Inc.  ...................................................    2,175,000 
   170,000  Sano Corp.* .....................................................    2,210,000 
   110,000  Serologicals Corp.* .............................................    3,245,000 
   160,000  Staar Surgical Co.* .............................................    2,140,000 
    30,000  Sterile Recoveries, Inc.  .......................................      502,500 
    90,000  Target Therapeutics, Inc.* ......................................    6,266,250 
    40,000  Thoratec Laboratories Corp.* ....................................      400,000 
   110,000  United States Surgical Corp.  ...................................    4,413,750 
   100,000  Urologix, Inc.  .................................................    1,725,000 
    90,000  Ventana Medical Systems, Inc.* ..................................    1,215,000 
    70,000  VISX, Inc.* .....................................................    1,505,000 
   160,000  Vivus, Inc.* ....................................................    9,700,000 
                                                                             -------------- 
                                                                                94,526,462 
                                                                             -------------- 
            Medical Services (4.3%) 
    40,000  Alternative Living Services, Inc.  ..............................      525,000 
    40,000  Atria Communities, Inc.  ........................................      480,000 
    15,000  Kapson Senior Quarters Corp.  ...................................      144,375 
    65,200  Medical Alliance, Inc.  .........................................      912,800 
   110,000  Medical Resources, Inc.* ........................................    1,182,500 
   230,000  NABI, Inc.* .....................................................    2,501,250 
    30,000  Oxford Health Plans, Inc.* ......................................    1,631,250 
    40,000  Patient Infosystems, Inc.  ......................................      325,000 
    20,000  Phoenix International Life Sciences, Inc.* (Canada) .............      153,606 
   115,000  Prime Medical Services, Inc.* ...................................    1,322,500 
   120,000  Quintiles Transnational Corp.* ..................................    8,940,000 

<PAGE>
   103,000  Transkaryotic Therapies, Inc.  ..................................  $ 2,034,250 
    80,000  Zoll Medical Corp.* .............................................      790,000 
                                                                             -------------- 
                                                                                20,942,531 
                                                                             -------------- 
            Personal Products (0.2%) 
    50,000  National Dentex Corp.* ..........................................      862,500 
                                                                             -------------- 
            Pharmaceuticals (23.3%) 
   100,000  Algos Pharmaceutical Corp.  .....................................    1,350,000 
   160,000  Alliance Pharmaceutical Corp.* ..................................    2,000,000 
   100,000  Amrion, Inc.* ...................................................    1,812,500 
    80,000  Andrx Corp. .....................................................    1,500,000 
   100,000  Aronex Pharmaceuticals, Inc.* ...................................      787,500 
    50,000  Autoimmune, Inc.* ...............................................      831,250 
    60,000  Biotransplant, Inc.* ............................................      435,000 
   228,968  Biovail Corporation International* ..............................    6,611,451 
   167,500  Bone Care International, Inc.* ..................................    1,298,125 
    50,000  Cadus Pharmaceutical Corp.  .....................................      693,750 
   100,000  Cambridge Neuroscience, Inc.  ...................................    1,187,500 
   100,000  Collagenex Pharmaceuticals, Inc.  ...............................      925,000 
    50,000  Coulter Pharmaceutical, Inc.  ...................................      600,000 
   180,000  Curative Health Services, Inc.* .................................    5,827,500 
   100,000  Cygnus, Inc.* ...................................................    1,450,000 
   200,000  Cypros Pharmaceutical Corp.* ....................................    1,075,000 
   150,000  DUSA Pharmaceuticals, Inc.  .....................................    1,143,750 
   150,000  Emisphere Technologies, Inc.  ...................................    3,487,500 
   130,000  Ergo Science Corp.* .............................................    1,820,000 
    30,000  Flamel Technologies (ADR)* (France) .............................      225,000 
    70,000  Geltex Pharmaceuticals, Inc.  ...................................    1,697,500 
    80,000  Genset (ADR)* (France) ..........................................    1,130,000 
   397,500  Guilford Pharmaceuticals, Inc.* .................................    9,738,750 
    50,000  Hyal Pharmaceutical Corp. (Canada) ..............................      194,791 
   120,000  ICOS Corp.* .....................................................      960,000 
   200,000  Imclone Systems, Inc.* ..........................................    1,575,000 
   120,000  Incyte Pharmaceuticals, Inc.* ...................................    7,920,000 
    80,000  Intercardia, Inc.* ..............................................    1,240,000 
   200,000  Interferon Sciences, Inc.* ......................................      518,750 
   185,100  Interneuron Pharmaceuticals, Inc.* ..............................    5,460,450 
    97,500  Jones Medical Industries, Inc.  .................................    3,692,813 
   200,000  Medarex, Inc.* ..................................................    1,775,000 
   160,000  Medicis Pharmaceutical Corp. (Class A)* .........................   10,040,000 
    50,000  Microcide Pharmaceuticals, Inc.* ................................      593,750 

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       61
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
PORTFOLIO OF INVESTMENTS January 31, 1997 (unaudited) continued 

 NUMBER OF 
   SHARES                                                                         VALUE 
- ------------------------------------------------------------------------------------------- 
    20,000  Millennium Pharmaceuticals, Inc.* ............................... $    387,500 
    50,000  Neose Technologies, Inc.  .......................................      900,000 
   110,000  Neurocrine Bioscience, Inc.  ....................................    1,003,750 
   220,000  North American Vaccine, Inc.* ...................................    5,390,000 
    85,000  NPS Pharmaceuticals, Inc.* ......................................      956,250 
   100,000  Onyx Pharmaceuticals, Inc.  .....................................    1,000,000 
   130,000  Orphan Medical, Inc.* ...........................................      991,250 
   100,000  Parexel International Corp.  ....................................    5,825,000 
   150,000  Pathogenesis Corp.  .............................................    4,537,500 
    45,000  Pharmacyclics, Inc.* ............................................      860,625 
    75,000  Ribozyme Pharmaceuticals, Inc.* .................................      890,625 
   180,000  Sangstat Medical Corp.* .........................................    5,512,500 
   100,000  Sequus Pharmaceuticals, Inc.  ...................................    1,337,500 
   100,000  Sonus Pharmaceuticals, Inc.  ....................................    2,725,000 
    12,500  SuperGen, Inc.* .................................................      156,250 
   100,000  Zila, Inc.* .....................................................      806,250 
                                                                             -------------- 
                                                                               114,877,630 
                                                                             -------------- 
            Retail -Specialty (1.5%) 
   110,000  Cole National Corp.* ............................................    3,135,000 
   125,000  Rexall Sundown, Inc.* ...........................................    3,968,750 
                                                                             -------------- 
                                                                                 7,103,750 
                                                                             -------------- 
            TOTAL COMMON STOCKS 
            (Identified Cost $346,332,483) ..................................  489,220,059 
                                                                             -------------- 
            WARRANTS (0.0%) 
            Medical Products & Supplies (0.0%) 
    70,000  ATS Medical, Inc. (due 03/02/97)* ...............................       21,875 
                                                                             -------------- 
            Pharmaceuticals (0.0%) 
    30,000  SuperGen, Inc. (due 03/12/01)* ..................................      163,125 
                                                                             -------------- 
            TOTAL WARRANTS 
            (Identified Cost $43,448) .......................................      185,000 
                                                                             -------------- 
</TABLE>

<TABLE>
<CAPTION>
 PRINCIPAL 
 AMOUNT IN 
 THOUSANDS                                                                       VALUE 
- ------------------------------------------------------------------------------------------ 
<S>         <C>                                                                 <C>
            SHORT-TERM INVESTMENT (1.0%) 
            REPURCHASE AGREEMENT 
   $4,875   The Bank of New York 5.25% due 02/31/97 (dated 01/31/97; 
             proceeds $4,876,953; collateralized by $4,611,138 FNMA 6.25% due 
             11/10/99 valued at $4,664,958 and $440,265 U.S. Treasury Strip 
             0.00% due 11/15/02 valued at $307,358)(Identified Cost 
             $4,874,820) ....................................................  $4,874,820 
                                                                             ------------- 
TOTAL INVESTMENTS 
(Identified Cost $351,250,751) (a)...............................   100.4%    494,279,879 
LIABILITIES IN EXCESS OF                                          
OTHER ASSETS.....................................................    (0.4)     (1,909,875)
                                                                  -------- -------------- 
NET ASSETS.......................................................   100.0%   $492,370,004 
                                                                  ======== ============== 
</TABLE>                          

- ------------ 
ADR     American Depository Receipt. 
*       Non-income producing security. 
+       Consists of more than one class of securities traded together as a 
        unit; stocks with attached warrants. 
(a)     The aggregate cost for federal income tax purposes approximates 
        identified cost. The aggregate gross unrealized appreciation is 
        $164,106,142 and the aggregate gross unrealized depreciation is 
        $21,077,014, resulting in net unrealized appreciation of 
        $143,029,128. 

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       62
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
FINANCIAL STATEMENTS 

STATEMENT OF ASSETS AND LIABILITIES 
January 31, 1997 (unaudited) 

<TABLE>
<CAPTION>
<S>                                                                      <C>
ASSETS: 
Investments in securities, at value 
 (identified cost $351,250,751).......................................   $494,279,879 
Receivable for: 
  Investments sold....................................................      5,273,061 
  Shares of beneficial interest sold .................................      1,008,320 
Deferred organizational expenses .....................................         24,012 
Prepaid expenses......................................................        129,996 
                                                                         ------------
  TOTAL ASSETS .......................................................    500,715,268 
                                                                         ------------
LIABILITIES: 
Payable for: 
  Investments purchased...............................................      6,634,899 
  Shares of beneficial interest repurchased...........................        767,562 
  Plan of distribution fee ...........................................        408,198 
  Investment advisory fee ............................................        408,198 
Accrued expenses .....................................................        126,407 
                                                                         ------------
  TOTAL LIABILITIES...................................................      8,345,264 
                                                                         ------------
NET ASSETS: 
Paid-in-capital.......................................................    363,100,261 
Net unrealized appreciation ..........................................    143,029,128 
Accumulated net investment loss.......................................     (5,058,494) 
Accumulated net realized loss.........................................     (8,700,891) 
                                                                         ------------
  NET ASSETS..........................................................   $492,370,004 
                                                                         ============
NET ASSET VALUE PER SHARE, 
 31,334,590 shares outstanding (unlimited shares authorized of $.01 
 par value)...........................................................   $      15.71 
                                                                         ============
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       63
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
FINANCIAL STATEMENTS, continued 

STATEMENT OF OPERATIONS 
For the six months ended January 31, 1997 (unaudited) 


<TABLE>
<CAPTION>
<S>                                                  <C>
NET INVESTMENT INCOME: 
INCOME 
Interest..........................................   $   206,421 
Dividends (net of $2,467 foreign withholding 
 tax).............................................       104,859 
                                                     -----------
  TOTAL INCOME ...................................       311,280 
                                                     -----------
EXPENSES 
Plan of distribution fee .........................     2,406,821 
Investment advisory fee ..........................     2,406,219 
Transfer agent fees and expenses .................       347,086 
Registration fees ................................        57,367 
Shareholder reports and notices ..................        33,577 
Custodian fees ...................................        29,406 
Professional fees ................................        27,968 
Organizational expenses ..........................        16,244 
Trustees' fees and expenses ......................        11,972 
Other ............................................         4,766 
                                                     -----------
  TOTAL EXPENSES .................................     5,341,426 
                                                     -----------
  NET INVESTMENT LOSS.............................    (5,030,146) 
                                                     -----------
NET REALIZED AND UNREALIZED GAIN: 
Net realized gain ................................     2,570,344 
Net change in unrealized appreciation ............    54,559,089 
                                                     -----------
  NET GAIN .......................................    57,129,433 
                                                     -----------
NET INCREASE .....................................   $52,099,287 
                                                     ===========
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       64
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
FINANCIAL STATEMENTS, continued 

STATEMENT OF CHANGES IN NET ASSETS 

<TABLE>
<CAPTION>
                                                          FOR THE SIX     FOR THE YEAR 
                                                          MONTHS ENDED        ENDED 
                                                        JANUARY 31, 1997  JULY 31, 1996 
- --------------------------------------------------------------------------------------- 
                                                          (unaudited) 
<S>                                                    <C>              <C>
INCREASE (DECREASE) IN NET ASSETS: 
OPERATIONS: 
Net investment loss....................................   $ (5,030,146)   $ (7,836,792) 
Net realized gain......................................      2,570,344      38,104,756 
Net change in unrealized appreciation..................     54,559,089      16,813,336 
                                                          ------------    ------------
  NET INCREASE ........................................     52,099,287      47,081,300 
                                                          ------------    ------------
Distributions from net realized gain ..................    (28,286,327)    (22,643,391) 
Net increase from transactions in shares of beneficial 
 interest..............................................     25,681,466     144,702,568 
                                                          ------------    ------------
  NET INCREASE ........................................     49,494,426     169,140,477 
NET ASSETS: 
Beginning of period ...................................    442,875,578     273,735,101 
                                                          ------------    ------------
  END OF PERIOD 
  (Including accumulated net investment losses of 
  $5,058,494 and $28,348, respectively)................   $492,370,004    $442,875,578 
                                                          ============    ============
</TABLE>

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       65
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
NOTES TO FINANCIAL STATEMENTS January 31, 1997 (unaudited) 

1. ORGANIZATION AND ACCOUNTING POLICIES 

Dean Witter Health Sciences Trust (the "Fund") is registered under the 
Investment Company Act of 1940, as amended (the "Act"), as a non-diversified, 
open-end management investment company. The Fund's investment objective is 
capital appreciation. The Fund seeks to achieve its objective by investing in 
securities of companies in the health sciences industry throughout the world. 
The Fund was organized as a Massachusetts business trust on May 26, 1992 and 
commenced operations on October 30, 1992. 

The preparation of financial statements in accordance with generally accepted 
accounting principles requires management to make estimates and assumptions 
that affect the reported amounts and disclosures. Actual results could differ 
from those estimates. 

The following is a summary of significant accounting policies: 

A. VALUATION OF INVESTMENTS -- (1) an equity security listed or traded on the 
New York or American or other domestic or foreign stock exchange is valued at 
its latest sale price on that exchange prior to the time when assets are 
valued; if there were no sales that day, the security is valued at the latest 
bid price (in cases where a security is traded on more than one exchange, the 
security is valued on the exchange designated as the primary market pursuant 
to procedures adopted by the Trustees); (2) all other portfolio securities 
for which over-the-counter market quotations are readily available are valued 
at the latest available bid price prior to the time of valuation; (3) when 
market quotations are not readily available, including circumstances under 
which it is determined by Dean Witter InterCapital Inc. (the "Investment 
Manager") that sale or bid prices are not reflective of a security's market 
value, portfolio securities are valued at their fair value as determined in 
good faith under procedures established by and under the general supervision 
of the Trustees (valuation of debt securities for which market quotations are 
not readily available may be based upon current market prices of securities 
which are comparable in coupon, rating and maturity or an appropriate matrix 
utilizing similar factors); (4) short-term debt securities having a maturity 
date of more than sixty days at time of purchase are valued on a 
mark-to-market basis until sixty days prior to maturity and thereafter at 
amortized cost based on their value on the 61st day. Short-term debt 
securities having a maturity date of sixty days or less at the time of 
purchase are valued at amortized cost; and (5) the market value of foreign 
denominated portfolio securities is translated at the exchange rate 
prevailing at the end of the period. 

B. ACCOUNTING FOR INVESTMENTS -- Security transactions are accounted for on 
the trade date (date the order to buy or sell is executed). Realized gains 
and losses on security transactions are determined by the identified cost 
method. Dividend income and other distributions are recorded on the 
ex-dividend date. Discounts are accreted over the life of the respective 
securities. Interest income is accrued daily. 

                                      66
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
NOTES TO FINANCIAL STATEMENTS January 31, 1997 (unaudited) continued 

C. FEDERAL INCOME TAX STATUS -- It is the Fund's policy to comply with the 
requirements of the Internal Revenue Code applicable to regulated investment 
companies and to distribute all of its taxable income to its shareholders. 
Accordingly, no federal income tax provision is required. 

D. DIVIDENDS AND DISTRIBUTIONS TO SHAREHOLDERS -- The Fund records dividends 
and distributions to its shareholders on the ex-dividend date. The amount of 
dividends and distributions from net investment income and net realized 
capital gains are determined in accordance with federal income tax 
regulations which may differ from generally accepted accounting principles. 
These "book/tax" differences are either considered temporary or permanent in 
nature. To the extent these differences are permanent in nature, such amounts 
are reclassified within the capital accounts based on their federal tax-basis 
treatment; temporary differences do not require reclassification. Dividends 
and distributions which exceed net investment income and net realized capital 
gains for financial reporting purposes but not for tax purposes are reported 
as dividends in excess of net investment income or distributions in excess of 
net realized capital gains. To the extent they exceed net investment income 
and net realized capital gains for tax purposes, they are reported as 
distributions of paid-in-capital. 

E. ORGANIZATIONAL EXPENSES -- The Investment Manager paid the organizational 
expenses of the Fund in the amount of approximately $162,000 which have been 
reimbursed for the full amount thereof. Such expenses have been deferred and 
are being amortized on the straight-line method over a period not to exceed 
five years from the commencement of operations. 

2. INVESTMENT MANAGEMENT AGREEMENT 

Pursuant to an Investment Management Agreement, the Fund pays the Investment 
Manager a management fee, accrued daily and payable monthly, by applying the 
following annual rates to the net assets of the Fund determined at the close 
of each business day: 1.0% to the portion of daily net assets not exceeding 
$500 million and 0.95% to the portion of daily net assets exceeding $500 
million. 

Under the terms of the Agreement, in addition to managing the Fund's 
investments, the Investment Manager maintains certain of the Fund's books and 
records and furnishes, at its own expense, office space, facilities, 
equipment, clerical, bookkeeping and certain legal services and pays the 
salaries of all personnel, including officers of the Fund who are employees 
of the Investment Manager. The Investment Manager also bears the cost of 
telephone services, heat, light, power and other utilities provided to the 
Fund. 

                                       67
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
NOTES TO FINANCIAL STATEMENTS January 31, 1997 (unaudited) continued 

3. PLAN OF DISTRIBUTION 

Shares of the Fund are distributed by Dean Witter Distributors Inc. (the 
"Distributor"), an affiliate of the Investment Manager. The Fund has adopted 
a Plan of Distribution (the "Plan") pursuant to Rule 12b-1 under the Act 
pursuant to which the Fund pays the Distributor compensation, accrued daily 
and payable monthly, at an annual rate of 1.0% of the lesser of: (a) the 
average daily aggregate gross sales of the Fund's shares since the Fund's 
inception (not including reinvestment of dividend or capital gain 
distributions) less the average daily aggregate net asset value of the Fund's 
shares redeemed since the Fund's inception upon which a contingent deferred 
sales charge has been imposed or upon which such charge has been waived; or 
(b) the Fund's average daily net assets. Amounts paid under the Plan are paid 
to the Distributor to compensate it for the services provided and the 
expenses borne by it and others in the distribution of the Fund's shares, 
including the payment of commissions for sales of the Fund's shares and 
incentive compensation to, and expenses of, the account executives of Dean 
Witter Reynolds Inc. ("DWR"), an affiliate of the Investment Manager and 
Distributor, and other employees or selected broker-dealers who engage in or 
support distribution of the Fund's shares or who service shareholder 
accounts, including overhead and telephone expenses, printing and 
distribution of prospectuses and reports used in connection with the offering 
of the Fund's shares to other than current shareholders and preparation, 
printing and distribution of sales literature and advertising materials. In 
addition, the Distributor may be compensated under the Plan for its 
opportunity costs in advancing such amounts, which compensation would be in 
the form of a carrying charge on any unreimbursed expenses incurred by the 
Distributor. 

Provided that the Plan continues in effect, any cumulative expenses incurred 
but not yet recovered, may be recovered through future distribution fees from 
the Fund and contingent deferred sales charges from the Fund's shareholders. 

Although there is no legal obligation for the Fund to pay expenses incurred 
in excess of payments made to the Distributor under the Plan and the proceeds 
of contingent deferred sales charges paid by investors upon redemption of 
shares, if for any reason the Plan is terminated, the Trustees will consider 
at that time the manner in which to treat such expenses. The Distributor has 
advised the Fund that such excess amounts, including carrying charges, total 
$17,093,930 at January 31, 1997. 

The Distributor has informed the Fund that for the six months ended January 
31, 1997, it received approximately $509,000 in contingent deferred sales 
charges from certain redemptions of the Fund's shares. 

                                       68
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
NOTES TO FINANCIAL STATEMENTS January 31, 1997 (unaudited) continued 

4. SECURITY TRANSACTIONS AND TRANSACTIONS WITH AFFILIATES 

The cost of purchases and proceeds from sales of portfolio securities, 
excluding short-term investments, for the six months ended January 31, 1997 
aggregated $159,976,549 and $155,061,958, respectively. 

For the six months ended January 31, 1997, the Fund incurred brokerage 
commissions of $6,330 with DWR for portfolio transactions executed on behalf 
of the Fund. 

Dean Witter Trust Company, an affiliate of the Investment Manager and 
Distributor, is the Fund's transfer agent. At January 31, 1997, the Fund had 
transfer agent fees and expenses payable of approximately $40,000. 

The Fund has an unfunded noncontributory defined benefit pension plan 
covering all independent Trustees of the Fund who will have served as 
independent Trustees for at least five years at the time of retirement. 
Benefits under this plan are based on years of service and compensation 
during the last five years of service. Aggregate pension costs for the six 
months ended January 31, 1997 included in Trustees' fees and expenses in the 
Statement of Operations amounted to $2,497. At January 31, 1997, the Fund had 
an accrued pension liability of $30,096 which is included in accrued expenses 
in the Statement of Assets and Liabilities. 

5. SHARES OF BENEFICIAL INTEREST 

Transactions in shares of beneficial interest were as follows: 

<TABLE>
<CAPTION>
                                         FOR THE SIX 
                                        MONTHS ENDED                FOR THE YEAR ENDED 
                                      JANUARY 31, 1997                JULY 31, 1996 
                                ----------------------------- ------------------------------ 
                                         (UNAUDITED) 
                                    SHARES         AMOUNT          SHARES         AMOUNT 
                                    ------         ------          ------         ------ 
<S>                               <C>          <C>              <C>           <C>
Sold                              8,052,051    $ 126,429,499    26,005,478    $ 429,545,190 
Reinvestment of distributions     1,860,102       26,655,267     1,434,910       21,121,878 
                                  ---------    -------------    ----------    -------------
                                  9,912,153      153,084,766    27,440,388      450,667,068 
Repurchased                      (8,170,765)    (127,403,300)  (19,102,244)    (305,964,500) 
                                  ---------    -------------    ----------    -------------
Net increase                      1,741,388    $  25,681,466     8,338,144    $ 144,702,568 
                                  =========    =============    ==========    =============
</TABLE>

6. FEDERAL INCOME TAX STATUS 

As of July 31, 1996, the Fund had temporary book/tax differences primarily 
attributable to capital loss deferrals on wash sales. 

                                       69
<PAGE>

DEAN WITTER HEALTH SCIENCES TRUST 
FINANCIAL HIGHLIGHTS 

Selected ratios and per share data for a share of beneficial interest 
outstanding throughout each period: 

<TABLE>
<CAPTION>
                                                                                                              FOR THE PERIOD 
                                              FOR THE SIX              FOR THE YEAR ENDED JULY 31            OCTOBER 30, 1992* 
                                              MONTHS ENDED      ----------------------------------------          THROUGH 
                                            JANUARY 31, 1997     1996            1995              1994        JULY 31, 1993 
- --------------------------------------------------------------------------------------------------------------------------------
                                              (UNAUDITED) 
<S>                                              <C>             <C>             <C>             <C>              <C>
PER SHARE OPERATING PERFORMANCE: 
Net asset value, beginning of period ......      $14.97          $12.88          $ 9.32          $ 9.22           $10.00 
                                                 ------          ------          ------          ------           ------
Net investment loss........................       (0.16)          (0.26)          (0.24)          (0.22)           (0.08) 
Net realized and unrealized gain (loss) ...        1.85            3.44            3.80            0.32            (0.70) 
                                                 ------          ------          ------          ------           ------
Total from investment operations...........        1.69            3.18            3.56            0.10            (0.78) 
                                                 ------          ------          ------          ------           ------
Less distributions from net realized gain         (0.95)          (1.09)           --              --               -- 
                                                 ------          ------          ------          ------           ------
Net asset value, end of period.............      $15.71          $14.97          $12.88          $ 9.32           $ 9.22 
                                                 ======          ======          ======          ======           ======
TOTAL INVESTMENT RETURN+ ..................       11.90%(1)       24.84%          38.20%           1.08%           (7.80)%(1) 
RATIOS TO AVERAGE NET ASSETS: 
Expenses...................................        2.22%(2)        2.20%           2.30%           2.30%            2.38%(2) 
Net investment loss........................       (2.09)%(2)      (2.03)%         (2.05)%         (2.06)%          (1.38)%(2) 
SUPPLEMENTAL DATA: 
Net assets, end of period, in thousands ...    $492,370        $442,876        $273,735        $228,573         $231,646 
Portfolio turnover rate ...................          33%(1)          63%            145%            106%              55%(1) 
Average commission rate paid...............     $0.0547         $0.0562            --              --               -- 

</TABLE>

- ------------ 
*      Commencement of operations. 
+      Does not reflect the deduction of sales charge. Calculated based on the 
       net asset value as of the last business day of the period. 
(1)    Not annualized. 
(2)    Annualized. 

                       SEE NOTES TO FINANCIAL STATEMENTS

                                       70

<PAGE>

                       DEAN WITTER HEALTH SCIENCES TRUST

                            PART C OTHER INFORMATION

Item 24.  Financial Statements and Exhibits

     (a)  Financial Statements

         (1)  Financial statements and schedules, included
              in Prospectus (Part A):                                 Page in
                                                                     Prospectus
                                                                     ----------
              Financial highlights for the period October 30,
              1992 through July 31, 1993 and for the years
              ended July 31, 1994, 1995 and 1996 and for
              the six months ended January 31, 1997
              (unaudited).........................................       6

         (2)  Financial statements included in the Statement
              of Additional Information (Part B):                     Page in
                                                                        SAI
                                                                        ---
              Portfolio of Investments at July 31, 1996..........        46  

              Statement of Assets and Liabilities at
              July 31, 1996 .....................................        50

              Statement of Operations for the year ended July
              31, 1996  .........................................        51

              Statement of changes in net assets for the 
              years ended July 31, 1995 and 1996.................        52

              Notes to Financial Statements at July 31, 1996.....        53

              Financial highlights for the period October 30,
              1992 through July 31, 1993 and for the 
              years ended July 31, 1994, 1995 and 1996 ..........        57

              Portfolio of Investments at January 31, 1997
              (unaudited)........................................        59

              Statement of Assets and Liabilities at January 31,
              1997 (unaudited)...................................        63

              Statement of Operations for the six months
              ended January 31, 1997 (unaudited).................        64

              Statement of Changes in Net Assets for the six
              months ended January 31, 1997 (unaudited) and for 
              the year ended July 31, 1996.......................        65

                                       1
<PAGE>

              Notes to Financial Statements at January 31, 1997
              (unaudited)..........................................      66

              Financial highlights for the period October 30,
              1992 through July 31, 1993 and for the 
              years ended July 31, 1994, 1995 and 1996 and for
              the six months ended January 31, 1997 (unaudited)....      70

         (3)  Financial statements included in Part C:

              None

     (b)  Exhibits:

          1.     --  Form of Instrument Establishing and Designating
                     Additional Classes.

          5.     --  Form of Investment Management Agreement between
                     the Registrant and Dean Witter InterCapital Inc.

          6.(a)  --  Form of Distribution Agreement between the
                     Registrant and Dean Witter Distributors Inc.

          6.(b)  --  Form of Multiple-Class Distribution Agreement
                     between the Registrant and Dean Witter
                     Distributors Inc.

          11.    --  Consent of Independent Accountants.

          15.    --  Form of Amended and Restated Plan of
                     Distribution pursuant to Rule 12b-1.

          27.    --  Financial Data Schedule.

          Other  --  Form of Multiple-Class Plan pursuant to Rule 18f-3.

- --------------
All other exhibits were previously filed and are hereby incorporated by
reference.

Item 25.   Persons Controlled by or Under Common Control With
           Registrant.

           None

Item 26.   Number of Holders of Securities.

         (1)                                   (2)
                                     Number of Record Holders
     Title of Class                      at June 30, 1997
     --------------                      ----------------

Shares of Beneficial Interest                  54,580

                                       2
<PAGE>

Item 27.   Indemnification

         Pursuant to Section 5.3 of the Registrant's Declaration of Trust and
under Section 4.8 of the Registrant's By-Laws, the indemnification of the
Registrant's trustees, officers, employees and agents is permitted if it is
determined that they acted under the belief that their actions were in or not
opposed to the best interest of the Registrant, and, with respect to any
criminal proceeding, they had reasonable cause to believe their conduct was not
unlawful. In addition, indemnification is permitted only if it is determined
that the actions in question did not render them liable by reason of willful
misfeasance, bad faith or gross negligence in the performance of their duties
or by reason of reckless disregard of their obligations and duties to the
Registrant. Trustees, officers, employees and agents will be indemnified for
the expense of litigation if it is determined that they are entitled to
indemnification against any liability established in such litigation. The
Registrant may also advance money for these expenses provided that they give
their undertakings to repay the Registrant unless their conduct is later
determined to permit indemnification.

         Pursuant to Section 5.2 of the Registrant's Declaration of Trust and
paragraph 8 of the Registrant's Investment Management Agreement, neither the
Investment Manager nor any trustee, officer, employee or agent of the
Registrant shall be liable for any action or failure to act, except in the case
of bad faith, willful misfeasance, gross negligence or reckless disregard of
duties to the Registrant.

         Insofar as indemnification for liabilities arising under the
Securities Act of 1933 (the "Act") may be permitted to trustees, officers and
controlling persons of the Registrant 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 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 in connection with the successful
defense of any action, suit or proceeding) is asserted against the Registrant
by such trustee, officer or controlling person 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 Act, and will be governed by the
final adjudication of such issue.

         The Registrant hereby undertakes that it will apply the
indemnification provision of its by-laws in a manner consistent with Release
11330 of the Securities and Exchange Commission under the Investment Company
Act of 1940, so long as the interpretation of Sections 17(h) and 17(i) of such
Act remains in effect.

                                       3
<PAGE>

         Registrant, in conjunction with the Investment Manager, Registrant's
Trustees, and other registered investment management companies managed by the
Investment Manager, maintains insurance on behalf of any person who is or was a
Trustee, officer, employee, or agent of Registrant, or who is or was serving at
the request of Registrant as a trustee, director, officer, employee or agent of
another trust or corporation, against any liability asserted against him and
incurred by him or arising out of his position. However, in no event will
Registrant maintain insurance to indemnify any such person for any act for
which Registrant itself is not permitted to indemnify him.

Item 28.   Business and Other Connections of Investment Adviser.

         See "The Fund and Its Management" in the Prospectus regarding the
business of the investment adviser. The following information is given
regarding officers of Dean Witter InterCapital Inc. InterCapital is a
wholly-owned subsidiary of Morgan Stanley, Dean Witter, Discover & Co. The
principal address of the Dean Witter Funds is Two World Trade Center, New York,
New York 10048.

         The term "Dean Witter Funds" used below refers to the following
registered investment companies:

Closed-End Investment Companies
- -------------------------------
 (1) InterCapital Income Securities Inc.
 (2) High Income Advantage Trust
 (3) High Income Advantage Trust II
 (4) High Income Advantage Trust III
 (5) Municipal Income Trust
 (6) Municipal Income Trust II
 (7) Municipal Income Trust III
 (8) Dean Witter Government Income Trust
 (9) Municipal Premium Income Trust
(10) Municipal Income Opportunities Trust 
(11) Municipal Income Opportunities Trust II 
(12) Municipal Income Opportunities Trust III 
(13) Prime Income Trust 
(14) InterCapital Insured Municipal Bond Trust 
(15) InterCapital Quality Municipal Income Trust 
(16) InterCapital Quality Municipal Investment Trust
(17) InterCapital Insured Municipal Income Trust
(18) InterCapital California Insured Municipal Income Trust 
(19) InterCapital Insured Municipal Trust 
(20) InterCapital Quality Municipal Securities 
(21) InterCapital New York Quality Municipal Securities 
(22) InterCapital California Quality Municipal Securities 
(23) InterCapital Insured California Municipal Securities 
(24) InterCapital Insured Municipal Securities

Open-end Investment Companies:
- ------------------------------
 (1) Dean Witter Short-Term Bond Fund

                                       4
<PAGE>

 (2) Dean Witter Tax-Exempt Securities Trust
 (3) Dean Witter Tax-Free Daily Income Trust
 (4) Dean Witter Dividend Growth Securities Inc.
 (5) Dean Witter Convertible Securities Trust
 (6) Dean Witter Liquid Asset Fund Inc.
 (7) Dean Witter Developing Growth Securities Trust
 (8) Dean Witter Retirement Series
 (9) Dean Witter Federal Securities Trust
(10) Dean Witter World Wide Investment Trust 
(11) Dean Witter U.S. Government Securities Trust 
(12) Dean Witter Select Municipal Reinvestment Fund 
(13) Dean Witter High Yield Securities Inc. 
(14) Dean Witter Intermediate Income Securities 
(15) Dean Witter New York Tax-Free Income Fund 
(16) Dean Witter California Tax-Free Income Fund 
(17) Dean Witter Health Sciences Trust 
(18) Dean Witter California Tax-Free Daily Income Trust 
(19) Dean Witter Global Asset Allocation Fund 
(20) Dean Witter American Value Fund 
(21) Dean Witter Strategist Fund 
(22) Dean Witter Utilities Fund 
(23) Dean Witter World Wide Income Trust 
(24) Dean Witter New York Municipal Money Market Trust 
(25) Dean Witter Capital Growth Securities 
(26) Dean Witter Precious Metals and Minerals Trust 
(27) Dean Witter European Growth Fund Inc. 
(28) Dean Witter Global Short-Term Income Fund Inc. 
(29) Dean Witter Pacific Growth Fund Inc. 
(30) Dean Witter Multi-State Municipal Series Trust 
(31) Dean Witter Short-Term U.S. Treasury Trust 
(32) Dean Witter Diversified Income Trust 
(33) Dean Witter U.S. Government Money Market Trust 
(34) Dean Witter Global Dividend Growth Securities 
(35) Active Assets California Tax-Free Trust 
(36) Dean Witter Natural Resource Development Securities Inc. 
(37) Active Assets Government Securities Trust 
(38) Active Assets Money Trust 
(39) Active Assets Tax-Free Trust 
(40) Dean Witter Limited Term Municipal Trust 
(41) Dean Witter Variable Investment Series 
(42) Dean Witter Value-Added Market Series 
(43) Dean Witter Global Utilities Fund 
(44) Dean Witter High Income Securities 
(45) Dean Witter National Municipal Trust 
(46) Dean Witter International SmallCap Fund 
(47) Dean Witter Mid-Cap Growth Fund 
(48) Dean Witter Select Dimensions Investment Series
(49) Dean Witter Balanced Growth Fund 
(50) Dean Witter Balanced Income Fund
(51) Dean Witter Hawaii Municipal Trust 
(52) Dean Witter Capital Appreciation Fund 
(53) Dean Witter Intermediate Term U.S. Treasury Trust 
(54) Dean Witter Information Fund 
(55) Dean Witter Japan Fund

                                       5
<PAGE>

(56) Dean Witter Income Builder Fund
(57) Dean Witter Special Value Fund
(58) Dean Witter Financial Services Trust
(59) Dean Witter Market Leader Trust

The term "TCW/DW Funds" refers to the following registered investment
companies:

Open-End Investment Companies
- -----------------------------
 (1) TCW/DW Core Equity Trust
 (2) TCW/DW North American Government Income Trust
 (3) TCW/DW Latin American Growth Fund
 (4) TCW/DW Income and Growth Fund
 (5) TCW/DW Small Cap Growth Fund
 (6) TCW/DW Balanced Fund
 (7) TCW/DW Total Return Trust
 (8) TCW/DW Mid-Cap Equity Trust
 (9) TCW/DW Global Telecom Trust 
(10)TCW/DW Strategic Income Trust

Closed-End Investment Companies
- -------------------------------
 (1) TCW/DW Term Trust 2000
 (2) TCW/DW Term Trust 2002
 (3) TCW/DW Term Trust 2003
 (4) TCW/DW Emerging Markets Opportunities Trust

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Charles A. Fiumefreddo       Executive Vice President and Director of Dean
Chairman, Chief              Witter Reynolds Inc. ("DWR"); Chairman, Chief
Executive Officer and        Executive Officer and Director of Dean Witter
Director                     Distributors Inc. ("Distributors") and Dean
                             Witter Services Company Inc. ("DWSC"); Chairman
                             and Director of Dean Witter Trust Company
                             ("DWTC"); Chairman, Director or Trustee, President
                             and Chief Executive Officer of the Dean Witter
                             Funds and Chairman, Chief Executive Officer and
                             Trustee of the TCW/DW Funds; Director and/or
                             officer of various Morgan Stanley, Dean Witter,
                             Discover & Co. ("MSDWD") subsidiaries; Formerly
                             Executive Vice President and Director of Dean
                             Witter, Discover & Co.

Philip J. Purcell            Chairman, Chief Executive Officer and Director of
Director                     of MSDWD and DWR; Director of DWSC and
                             Distributors; Director or Trustee of the Dean
                             Witter Funds; Director and/or officer of various
                             MSDWD subsidiaries.

                                       6
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Richard M. DeMartini         President and Chief Operating Officer
Director                     of Dean Witter Capital, a division
                             of DWR; Director of DWR, DWSC, Distributors and
                             DWTC; Trustee of the TCW/DW Funds.

James F. Higgins             President and Chief Operating Officer of
Director                     Dean Witter Financial; Director of DWR,
                             DWSC, Distributors and DWTC.

Thomas C. Schneider          Executive Vice President and Chief Strategic
Executive Vice               and Administrative Officer of MSDWD; Executive
President, Chief             Vice President and Chief Financial Officer of 
Financial Officer and        DWSC and Distributors; Director of DWR, 
Director                     DWSC and Distributors.


Christine A. Edwards         Executive Vice President, Chief Legal Officer
Director                     and Secretary of MSDWD; Executive Vice
                             President, Secretary and Chief Legal Officer
                             of Distributors; Director of DWR, DWSC and
                             Distributors.

Robert M. Scanlan            President and Chief Operating Officer of DWSC,
President and Chief          Executive Vice President of Distributors;
Operating Officer            Executive Vice President and Director of DWTC;
                             Vice President of the Dean Witter Funds and the
                             TCW/DW Funds.

Mitchell M. Merin            President and Chief Strategic Officer of DWSC,
President and Chief          Executive Vice President of Distributors;
Strategic Officer            Executive Vice President and Director of DWTC;
                             Executive Vice President and Director of DWR;
                             Director of SPS Transaction Services, Inc. and
                             various other MSDWD subsidiaries.

John B. Van Heuvelen         President, Chief Operating Officer and Director
Executive Vice               of DWTC.
President

Joseph J. McAlinden
Executive Vice President
and Chief Investment         Vice President of the Dean Witter Funds and
Officer                      Director of DWTC.

Barry Fink                   Assistant Secretary of DWR; Senior Vice President,
Senior Vice President,       Secretary and General Counsel of DWSC; Senior Vice
Secretary and General        President, Assistant Secretary and Assistant
Counsel                      General Counsel of Distributors; Vice President,
                             Secretary and General Counsel of the Dean Witter
                             Funds and the TCW/DW Funds.

                                       7
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Peter M. Avelar
Senior Vice President        Vice President of various Dean Witter Funds.

Mark Bavoso
Senior Vice President        Vice President of various Dean Witter Funds.

Richard Felegy
Senior Vice President

Edward F. Gaylor
Senior Vice President        Vice President of various Dean Witter Funds.

Robert S. Giambrone          Senior Vice President of DWSC, Distributors
Senior Vice President        and DWTC and Director of DWTC; Vice President
                             of the Dean Witter Funds and the TCW/DW Funds.

Rajesh K. Gupta
Senior Vice President        Vice President of various Dean Witter Funds.

Kenton J. Hinchcliffe
Senior Vice President        Vice President of various Dean Witter Funds.

Kevin Hurley
Senior Vice President        Vice President of various Dean Witter Funds.

Jenny Beth Jones             Vice President of Dean Witter Special Value Fund.
Senior Vice President 

John B. Kemp, III            Director of the Provident Savings Bank, Jersey
Senior Vice President        City, New Jersey.

Anita H. Kolleeny
Senior Vice President        Vice President of various Dean Witter Funds.

Jonathan R. Page
Senior Vice President        Vice President of various Dean Witter Funds.

Ira N. Ross 
Senior Vice President        Vice President of various Dean Witter Funds.

Guy G. Rutherfurd, Jr.       Vice President of Dean Witter Market Leader
Senior Vice President        Trust.

Rafael Scolari               Vice President of Prime Income Trust.
Senior Vice President

Rochelle G. Siegel
Senior Vice President        Vice President of various Dean Witter Funds.

                                       8
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Jayne M. Stevlingston        Vice President of various Dean Witter Funds.
Senior Vice President      
                           
Paul D. Vance              
Senior Vice President        Vice President of various Dean Witter Funds.
                           
Elizabeth A. Vetell        
Senior Vice President      
                           
James F. Willison          
Senior Vice President        Vice President of various Dean Witter Funds.
                           
Ronald J. Worobel          
Senior Vice President        Vice President of various Dean Witter Funds.
                           
Douglas Brown              
First Vice President       
                           
Thomas F. Caloia             First Vice President and Assistant Treasurer of
First Vice President         DWSC, Assistant Treasurer of Distributors;
and Assistant                Treasurer and Chief Financial Officer of the
Treasurer                    Dean Witter Funds and the TCW/DW Funds.
                           
Thomas Chronert            
First Vice President       
                           
Rosalie Clough             
First Vice President       
                           
Marilyn K. Cranney           Assistant Secretary of DWR; First Vice President
First Vice President         and Assistant Secretary of DWSC; Assistant
and Assistant Secretary      Secretary of the Dean Witter Funds and the TCW/DW
                             Funds.
                           
Michael Interrante           First Vice President and Controller of DWSC;
First Vice President         Assistant Treasurer of Distributors;First Vice
and Controller               President and Treasurer of DWTC.
                          
David Johnson
First Vice President

Stanley Kapica
First Vice President

Robert Zimmerman
First Vice President

Dale Albright
Vice President

                                       9
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Joan G. Allman               
Vice President               
                             
Andrew Arbenz                
Vice President               
                             
Joseph Arcieri               
Vice President               Vice President of various Dean Witter Funds.
                             
Kirk Balzer                  
Vice President               Vice President of Various Dean Witter Funds.
                             
Nancy Belza                  
Vice President               
                             
Dale Boettcher               
Vice President               
                             
Joseph Cardwell              
Vice President               
                             
Philip Casparius             
Vice President               
                             
B. Catherine Connelly        
Vice President               
                             
Salvatore DeSteno            
Vice President               Vice President of DWSC.
                             
Frank J. DeVito              
Vice President               Vice President of DWSC.
                             
Bruce Dunn                   
Vice President               
                             
Jeffrey D. Geffen            
Vice President              

Deborah Genovese
Vice President

Michael Geringer
Vice President

Stephen Greenhut
Vice President

Peter W. Gurman
Vice President

                                       10
<PAGE>

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Matthew Haynes               Vice President of Dean Witter
Vice President               Variable Investment Series
                             
Peter Hermann                
Vice President               Vice President of various Dean Witter Funds
                             
Elizabeth Hinchman           
Vice President               
                             
David Hoffman                
Vice President               
                             
Christopher Jones            
Vice President               
                             
James P. Kastberg            
Vice President               
                             
Michelle Kaufman             
Vice President               Vice President of various Dean Witter Funds
                             
Michael Knox                 
Vice President               Vice President of various Dean Witter Funds
                             
Paula LaCosta                
Vice President               Vice President of various Dean Witter Funds.
                             
Thomas Lawlor                
Vice President               
                             
Gerard J. Lian               
Vice President               Vice President of various Dean Witter Funds.
                             
Catherine Maniscalco         Vice President of Dean Witter Natural
Vice President               Resource Development Securities Inc.
                             
Albert McGarity              
Vice President              

LouAnne D. McInnis           Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and
Assistant Secretary          the TCW/DW Funds.
                             
Sharon K. Milligan           
Vice President               
                             
Julie Morrone                
Vice President               
                             
                                       11
<PAGE>                       
                             
NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Mary Beth Mueller            
Vice President               
                             
David Myers                  Vice President of Dean Witter Natural
Vice President               Resource Development Securities Inc.
                             
James Nash                   
Vice President               
                             
Richard Norris               
Vice President               
                             
Carsten Otto                 Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and
Assistant Secretary          the TCW/DW Funds.
                             
George Paoletti              
Vice President               
                             
Anne Pickrell                Vice President of Dean Witter Global Short-
Vice President               Term Income Fund Inc.
                             
Michael Roan                 
Vice President               
                             
Hugh Rose                    
Vice President               
                             
Robert Rossetti              Vice President of Dean Witter Precious Metal and
Vice President               Minerals Trust.
                             
Ruth Rossi                   Vice President and Assistant Secretary of DWSC;
Vice President and           Assistant Secretary of the Dean Witter Funds and
Assistant Secretary          the TCW/DW Funds.
                             
Carl F. Sadler               
Vice President               
                             
Peter Seeley                 Vice President of Dean Witter World
Vice President               Wide Income Trust
                             
Naomi Stein                  
Vice President               
                             
Kathleen H. Stromberg        
Vice President               Vice President of various Dean Witter Funds.
                             
Marybeth Swisher             
Vice President               
                             
                                       12
<PAGE>                       

NAME AND POSITION            OTHER SUBSTANTIAL BUSINESS, PROFESSION, VOCATION
WITH DEAN WITTER             OR EMPLOYMENT, INCLUDING NAME, PRINCIPAL ADDRESS
INTERCAPITAL INC.            AND NATURE OF CONNECTION
- -----------------            ------------------------------------------------
Vinh Q. Tran
Vice President               Vice President of various Dean Witter Funds.

Robert Vanden Assem
Vice President

Alice Weiss
Vice President               Vice President of various Dean Witter Funds.

Katherine Wickham
Vice President

Item 29.    Principal Underwriters

     (a)  Dean Witter Distributors Inc. ("Distributors"), a Delaware
          corporation, is the principal underwriter of the Registrant.
          Distributors is also the principal underwriter of the following
          investment companies:

 (1)        Dean Witter Liquid Asset Fund Inc.
 (2)        Dean Witter Tax-Free Daily Income Trust
 (3)        Dean Witter California Tax-Free Daily Income Trust
 (4)        Dean Witter Retirement Series
 (5)        Dean Witter Dividend Growth Securities Inc.
 (6)        Dean Witter Global Asset Allocation
 (7)        Dean Witter World Wide Investment Trust
 (8)        Dean Witter Capital Growth Securities
 (9)        Dean Witter Convertible Securities Trust
(10)        Active Assets Tax-Free Trust
(11)        Active Assets Money Trust
(12)        Active Assets California Tax-Free Trust
(13)        Active Assets Government Securities Trust
(14)        Dean Witter Short-Term Bond Fund
(15)        Dean Witter Mid-Cap Growth Fund
(16)        Dean Witter U.S. Government Securities Trust
(17)        Dean Witter High Yield Securities Inc.
(18)        Dean Witter New York Tax-Free Income Fund
(19)        Dean Witter Tax-Exempt Securities Trust
(20)        Dean Witter California Tax-Free Income Fund
(21)        Dean Witter Limited Term Municipal Trust
(22)        Dean Witter Natural Resource Development Securities Inc.
(23)        Dean Witter World Wide Income Trust
(24)        Dean Witter Utilities Fund
(25)        Dean Witter Strategist Fund
(26)        Dean Witter New York Municipal Money Market Trust
(27)        Dean Witter Intermediate Income Securities
(28)        Prime Income Trust
(29)        Dean Witter European Growth Fund Inc.
(30)        Dean Witter Developing Growth Securities Trust
(31)        Dean Witter Precious Metals and Minerals Trust

                                       13
<PAGE>

(32)        Dean Witter Pacific Growth Fund Inc.
(33)        Dean Witter Multi-State Municipal Series Trust
(34)        Dean Witter Federal Securities Trust
(35)        Dean Witter Short-Term U.S. Treasury Trust
(36)        Dean Witter Diversified Income Trust
(37)        Dean Witter Health Sciences Trust
(38)        Dean Witter Global Dividend Growth Securities
(39)        Dean Witter American Value Fund
(40)        Dean Witter U.S. Government Money Market Trust
(41)        Dean Witter Global Short-Term Income Fund Inc.
(42)        Dean Witter Value-Added Market Series
(43)        Dean Witter Global Utilities Fund
(44)        Dean Witter High Income Securities
(45)        Dean Witter National Municipal Trust
(46)        Dean Witter International SmallCap Fund
(47)        Dean Witter Balanced Growth Fund
(48)        Dean Witter Balanced Income Fund
(49)        Dean Witter Hawaii Municipal Trust
(50)        Dean Witter Variable Investment Series
(51)        Dean Witter Capital Appreciation Fund
(52)        Dean Witter Intermediate Term U.S. Treasury Trust
(53)        Dean Witter Information Fund
(54)        Dean Witter Japan Fund
(55)        Dean Witter Income Builder Fund
(56)        Dean Witter Special Value Fund
(57)        Dean Witter Financial Services Trust
(58)        Dean Witter Market Leader Trust
 (1)        TCW/DW Core Equity Trust
 (2)        TCW/DW North American Government Income Trust
 (3)        TCW/DW Latin American Growth Fund
 (4)        TCW/DW Income and Growth Fund
 (5)        TCW/DW Small Cap Growth Fund
 (6)        TCW/DW Balanced Fund
 (7)        TCW/DW Total Return Trust
 (8)        TCW/DW Mid-Cap Equity Trust
 (9)        TCW/DW Global Telecom Trust
(10)        TCW/DW Strategic Income Trust

(b) The following information is given regarding directors and officers of
Distributors not listed in Item 28 above. The principal address of Distributors
is Two World Trade Center, New York, New York 10048. None of the following
persons has any position or office with the Registrant.


                                    Positions and
                                    Office with
Name                                Distributors
- ----                                ------------

Fredrick K. Kubler                Senior Vice President, Assistant
                                  Secretary and Chief Compliance
                                  Officer.

Michael T. Gregg                  Vice President and Assistant
                                  Secretary.

                                       14
<PAGE>

Item 30.    Location of Accounts and Records

       All accounts, books and other documents required to be maintained by
Section 31(a) of the Investment Company Act of 1940 and the Rules thereunder
are maintained by the Investment Manager at its offices, except records
relating to holders of shares issued by the Registrant, which are maintained by
the Registrant's Transfer Agent, at its place of business as shown in the
prospectus.

Item 31.    Management Services

        Registrant is not a party to any such management-related service
contract.

Item 32.    Undertakings

        Registrant hereby undertakes to furnish each person to whom a
prospectus is delivered with a copy of the Registrant's latest annual report to
shareholders, upon request and without charge.

                                       15
<PAGE>

                                   SIGNATURES

       Pursuant to the requirements of the Securities Act of 1933 and the
Investment Company Act of 1940, the Registrant certifies that it meets all of
the requirements for effectiveness of this Registration Statement pursuant to
Rule 485(b) under the Securities Act of 1933 and has duly caused this
PostEffective Amendment to the Registration Statement to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of New York and State
of New York on the 17th day of July, 1997.

                                              DEAN WITTER HEALTH SCIENCES TRUST

                                              By  /s/ Barry Fink
                                                 --------------------------
                                                     Barry Fink
                                                  Vice President and Secretary

       Pursuant to the requirements of the Securities Act of 1933, this
PostEffective Amendment No. 6 has been signed below by the following persons in
the capacities and on the dates indicated.

         Signatures                    Title                     Date

(1) Principal Executive Officer        President, Chief
                                       Executive Officer,
                                       Trustee and Chairman
By  /s/ Charles A. Fiumefreddo                                   07/17/97
   -------------------------------
        Charles A. Fiumefreddo

(2) Principal Financial Officer        Treasurer and Principal
                                       Accounting Officer

By   /s/ Thomas F. Caloia                                        07/17/97
    ------------------------------
        Thomas F. Caloia

(3) Majority of the Trustees

    Charles A. Fiumefreddo (Chairman)
    Philip J. Purcell

By   /s/ Barry Fink                                              07/17/97
    ------------------------------
           Barry Fink
        Attorney-in-Fact

    Manuel H. Johnson          John R. Haire
    Michael Bozic              Michael E. Nugent
    Edwin J. Garn              John L. Schroeder



By  /s/ David M. Butowsky                                        07/17/97
   -------------------------------
        David M. Butowsky
        Attorney-in-Fact






<PAGE>

                                  EXHIBIT INDEX

                        DEAN WITTER HEALTH SCIENCES TRUST

       1.    --  Form of Instrument Establishing and
                 Designating Additional Classes.

       5.    --  Form of Investment Management Agreement
                 between the Registrant and Dean Witter
                 InterCapital Inc.

       6.(a) --  Form of Distribution Agreement between the
                 Registrant and Dean Witter Distributors Inc.

         (b) --  Form of Multiple-Class Distribution Agreement
                 between the Registrant and Dean Witter
                 Distributors Inc.

      11.    --  Consent of Independent Accountants.

      15.    --  Form of Amended and Restated Plan of
                 Distribution pursuant to Rule 12b-1.

      27.    --  Financial Data Schedule.

      Other  --  Form of Multiple-Class Plan pursuant to Rule
                 18f-3.

- -------------
All other exhibits were previously filed and are hereby incorporated by
reference.


<PAGE>

                                   CERTIFICATE


                  The undersigned hereby certifies that he is the Secretary of
Dean Witter Health Sciences Trust (the "Trust"), an unincorporated business
trust organized under the laws of the Commonwealth of Massachusetts, that
annexed hereto is an Instrument Establishing and Designating Additional Classes
of Shares of the Trust unanimously adopted by the Trustees of the Trust on June
30, 1997, as provided in Section 6.9(h) of the said Declaration, said Instrument
to take effect on July 28, 1997, and I do hereby further certify that such
Instrument has not been amended and is on the date hereof in full force and
effect.

                  Dated this 28th day of July, 1997.



                                               --------------------------------
                                               Barry Fink
                                               Secretary




(SEAL)

















<PAGE>



                        DEAN WITTER HEALTH SCIENCES TRUST

                     INSTRUMENT ESTABLISHING AND DESIGNATING
                          ADDITIONAL CLASSES OF SHARES

WHEREAS, Dean Witter Health Sciences Trust (the "Trust") was established by the
Declaration of Trust dated May 26, 1992, as amended from time to time (the
"Declaration"), under the laws of the Commonwealth of Massachusetts; 

WHEREAS, Section 6.9(h) of the Declaration provides that the establishment and
designation of any additional class of shares shall be effective upon the
execution by a majority of the then Trustees of an instrument setting forth
such establishment and designation and the relative rights, preferences,
voting powers, restrictions, limitations as to dividends, qualifications, and
terms and conditions of such class, or as otherwise provided in such
instrument, which instrument shall have the status of an amendment to the
Declaration; and

WHEREAS, the Trustees of the Trust have deemed it advisable to establish and
designate three additional classes of shares and to designate classes for the
existing shares held prior to July 28, 1997 ("Existing Class") as provided
herein.

NOW, THEREFORE, BE IT RESOLVED, pursuant to Section 6.9(h) of the Declaration,
there are hereby established and designated three additional classes of
shares, to be known as: Class A, Class C and Class D (the "Additional
Classes"), each of which shall be subject to the relative rights, preferences,
voting powers, restrictions, limitations as to dividends, qualifications, and
terms and conditions of redemption set forth in the Declaration with respect
to the Existing Class, except to the extent the Dean Witter Funds Multiple
Class Plan Pursuant to Rule 18f-3 attached hereto as Exhibit A sets forth
differences (i) between each of the Additional Classes, or (ii) among each of
the Existing Class and the Additional Classes; and be it further

RESOLVED, pursuant to Section 6.9(h) of the Declaration, all shares of the
Trust held prior to July 28, 1997 are hereby designated as Class B shares of
the Trust.


This instrument may be executed in more than one counterpart, each of which
shall be deemed an original, but all of which together shall constitute one
and the same document.




<PAGE>



IN WITNESS THEREOF, the undersigned, the Trustees of the Trust, have executed
this instrument this 30th day of June, 1997.



/s/ Michael Bozic                         /s/ Manuel H. Johnson
- --------------------------------          --------------------------------
Michael Bozic, as Trustee                 Manuel H. Johnson, as Trustee
and not individually                      and not individually
c/o Levitz Furniture Corp.                c/o Johnson Smick International Inc.
6111 Broken Sound Parkway, N.W.           1133 Connecticut Avenue, N.W.
Boca Raton, FL  33487                     Washington, D.C.  20036




/s/ Charles A. Fiumefreddo                /s/ Michael E. Nugent
- --------------------------------          --------------------------------
Charles A. Fiumefreddo, as Trustee        Michael E. Nugent, as Trustee
and not individually                      and not individually
Two World Trade Center                    c/o Triumph Capital, L.P.
New York, NY  10048                       237 Park Avenue
                                          New York, NY  10017



/s/ Edwin J. Garn                         Philip J. Purcell
- --------------------------------          --------------------------------
Edwin J. Garn, as Trustee                 Philip J. Purcell, as Trustee
and not individually                      and not individually
c/o Huntsman Chemical Corporation         Two World Trade Center
500 Huntsman Way                          New York, NY  10048
Salt Lake City, UT  84111




/s/ John R. Haire                         /s/ John L. Schroeder
- --------------------------------          --------------------------------
John R. Haire, as Trustee                 John L. Schroeder, as Trustee
and not individually                      and not individually
Two World Trade Center                    c/o Gordon Altman Butowsky Weitzen
New York, NY  10048                         Shalov & Wein
                                          Counsel to the Independent Trustees
                                          114 West 47th Street
                                          New York, NY  10036



<PAGE>




STATE OF NEW YORK             )
                              )ss:
COUNTY OF NEW YORK            )



         On this 30th day of June, 1997, MICHAEL BOZIC, CHARLES A.
FIUMEFREDDO, EDWIN J. GARN, JOHN R. HAIRE, MANUEL H. JOHNSON, MICHAEL E.
NUGENT, PHILIP J. PURCELL and JOHN L. SCHROEDER, known to me to be the
individuals described in and who executed the foregoing instrument, personally
appeared before me and they severally acknowledged the foregoing instrument to
be their free act and deed.



                                                 /s/ Marilyn K. Cranney
                                                 ---------------------------
                                                 Notary Public






My Commission expires:

MARILYN K. CRANNEY
NOTARY PUBLIC, STATE OF NEW YORK
NO. 24-4795538
QUALIFIED IN KINGS COUNTY
COMMISSION EXPIRES MAY 31, 1999








<PAGE>
                                                                     EXHIBIT A 

                                 DEAN WITTER 
                                    FUNDS 
                             MULTIPLE CLASS PLAN 
                            PURSUANT TO RULE 18f-3 

  INTRODUCTION 

   This plan (the "Plan") is adopted pursuant to Rule 18f-3(d) of the Investment
Company Act of 1940, as amended (the "1940 Act"), and will be effective as of
July 28, 1997. The Plan relates to shares of the open-end investment companies
to which Dean Witter InterCapital Inc. acts as investment manager, that are
listed on Schedule A, as may be amended from time to time (each, a "Fund" and
collectively, the "Funds"). The Funds are distributed pursuant to a system (the
"Multiple Class System") in which each class of shares (each, a "Class" and
collectively, the "Classes") of a Fund represents a pro rata interest in the
same portfolio of investments of the Fund and differs only to the extent
outlined below.

I. DISTRIBUTION ARRANGEMENTS 

   One or more Classes of shares of the Funds are offered for purchase by
investors with the sales load structures described below. In addition, pursuant
to Rule 12b-1 under the 1940 Act, the Funds have each adopted a Plan of
Distribution (the "12b-1 Plan") under which shares of certain Classes are
subject to the service and/or distribution fees ("12b-1 fees") described below.

   1. Class A Shares 

   Class A shares are offered with a front-end sales load ("FESL"). The schedule
of sales charges applicable to a Fund and the circumstances under which the
sales charges are subject to reduction are set forth in each Fund's current
prospectus. As stated in each Fund's current prospectus, Class A shares may be
purchased at net asset value (without a FESL): (i) in the case of certain large
purchases of such shares; and (ii) by certain limited categories of investors,
in each case, under the circumstances and conditions set forth in each Fund's
current prospectus. Class A shares purchased at net asset value may be subject
to a contingent deferred sales charge ("CDSC") on redemptions made within one
year of purchase. Further information relating to the CDSC, including the manner
in which it is calculated, is set forth in paragraph 6 below. Class A shares are
also subject to payments under each Fund's 12b-1 Plan to reimburse Dean Witter
Distributors Inc., Dean Witter Reynolds Inc. ("DWR"), its affiliates and other
broker-dealers for distribution expenses incurred by them specifically on behalf
of the Class, assessed at an annual rate of up to 0.25% of average daily net
assets. The entire amount of the 12b-1 fee represents a service fee within the
meaning of National Association of Securities Dealers, Inc. ("NASD") guidelines.

   2. Class B Shares 

   Class B shares are offered without a FESL, but will in most cases be subject
to a six-year declining CDSC which is calculated in the manner set forth in
paragraph 6 below. Class B shares purchased by certain qualified
employer-sponsored benefit plans are subject to a three-year declining CDSC
which is calculated in the manner set forth in paragraph 6 below. The schedule
of CDSC charges applicable to each Fund is set forth in each Fund's current
prospectus. With the exception of certain of the Funds which have a different
formula described below (Dean Witter American Value Fund, Dean Witter Natural
Resource Development Securities Inc., Dean Witter Strategist Fund and Dean
Witter Dividend Growth Securities

                                1           
<PAGE>

Inc.)(1), Class B shares are also subject to a fee under each Fund's respective
12b-1 Plan, assessed at the annual rate of up to 1.0% of either: (a) the lesser
of (i) the average daily aggregate gross sales of the Fund's Class B shares
since the inception of the Fund (not including reinvestment of dividends or
capital gains distributions), less the average daily aggregate net asset value
of the Fund's Class B shares redeemed since the Fund's inception upon which a
CDSC has been imposed or waived, or (ii) the average daily net assets of Class
B; or (b) the average daily net assets of Class B. A portion of the 12b-1 fee
equal to up to 0.25% of the Fund's average daily net assets is characterized as
a service fee within the meaning of the NASD guidelines and the remaining
portion of the 12b-1 fee, if any, is characterized as an asset-based sales
charge. Also, Class B shares have a conversion feature ("Conversion Feature")
under which such shares convert to Class A shares after a certain holding
period. Details of the Conversion Feature are set forth in Section IV below.

   3. Class C Shares 

   Class C shares are offered without imposition of a FESL, but will in most
cases be subject to a CDSC of 1.0% on redemptions made within one year after
purchase. Further information relating to the CDSC is set forth in paragraph 6
below. In addition, Class C shares, under each Fund's 12b-1 Plan, are subject to
12b-1 payments to reimburse Dean Witter Distributors Inc., DWR, its affiliates
and other broker-dealers for distribution expenses incurred by them specifically
on behalf of the Class, assessed at the annual rate of up to 1.0% of the average
daily net assets of the Class. A portion of the 12b-1 fee equal to up to 0.25%
of the Fund's average daily net assets is characterized as a service fee within
the meaning of NASD guidelines. Unlike Class B shares, Class C shares do not
have the Conversion Feature.

   4. Class D Shares 

   Class D shares are offered without imposition of a FESL, CDSC or a 12b-1 fee
for purchases of Fund shares by (i) investors meeting an initial minimum
investment requirement and (ii) certain other limited categories of investors,
in each case, as may be approved by the Boards of Directors/Trustees of the
Funds and as disclosed in each Fund's current prospectus.

   5. Additional Classes of Shares 

   The Boards of Directors/Trustees of the Funds have the authority to create
additional Classes, or change existing Classes, from time to time, in accordance
with Rule 18f-3 under the 1940 Act.

   6. Calculation of the CDSC 

   Any applicable CDSC is calculated based upon the lesser of net asset value of
the shares at the time of purchase or at the time of redemption. The CDSC does
not apply to amounts representing an increase in share value due to capital
appreciation and shares acquired through the reinvestment of dividends or

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

(1)The payments under the 12b-1 Plan for each of Dean Witter American Value
Fund, Dean Witter Natural Resource Development Securities Inc. and Dean Witter
Dividend Growth Securities Inc. are assessed at the annual rate of 1.0% of the
lesser of: (a) the average daily aggregate gross sales of the Fund's Class B
shares since the inception of the Fund's Plan (not including reinvestment of
dividends or capital gains distributions), less the average daily aggregate net
asset value of the Fund's Class B shares redeemed since the Plan's inception
upon which a contingent deferred sales charge has been imposed or waived, or (b)
the average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since inception of the Plan. The payments under the
12b-1 Plan for the Dean Witter Strategist Fund are assessed at the annual rate
of: (i) 1% of the lesser of (a) the average daily aggregate gross sales of the
Fund's Class B shares since the effectiveness of the first amendment of the Plan
on November 8, 1989 (not including reinvestment of dividends or capital gains
distributions), less the average daily aggregate net asset value of the Fund's
Class B shares redeemed since the effectiveness of the first amended Plan, upon
which a contingent deferred sales charge has been imposed or waived, or (b) the
average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since the effectiveness of the first amended Plan; plus
(ii) 0.25% of the average daily net assets of Class B attributable to shares
issued, net of related shares redeemed, prior to effectiveness of the first
amended Plan. 

                                       2
<PAGE>
capital gains distributions. The CDSC schedule applicable to a Fund and the
circumstances in which the CDSC is subject to waiver are set forth in each
Fund's prospectus.

II. EXPENSE ALLOCATIONS 

   Expenses incurred by a Fund are allocated among the various Classes of shares
pro rata based on the net assets of the Fund attributable to each Class, except
that 12b-1 fees relating to a particular Class are allocated directly to that
Class. In addition, other expenses associated with a particular Class (except
advisory or custodial fees), may be allocated directly to that Class, provided
that such expenses are reasonably identified as specifically attributable to
that Class and the direct allocation to that Class is approved by the Fund's
Board of Directors/Trustees.

III. CLASS DESIGNATION 

   All shares of the Funds held prior to July 28, 1997 (other than the shares
held by certain employee benefit plans established by DWR and its affiliate, SPS
Transaction Services, Inc., shares of Funds offered with a FESL, and shares of
Dean Witter Balanced Growth Fund and Dean Witter Balanced Income Fund) have been
designated Class B shares. Shares held prior to July 28, 1997 by such employee
benefit plans have been designated Class D shares. Shares held prior to July 28,
1997 of Funds offered with a FESL have been designated Class D shares. In
addition, shares of Dean Witter American Value Fund purchased prior to April 30,
1984, shares of Dean Witter Strategist Fund purchased prior to November 8, 1989
and shares of Dean Witter Natural Resource Development Securities Inc. and Dean
Witter Dividend Growth Securities Inc. purchased prior to July 2, 1984 (with
respect to such shares of each Fund, including such proportion of shares
acquired through reinvestment of dividends and capital gains distributions as
the total number of shares acquired prior to each of the preceding dates in this
sentence bears to the total number of shares purchased and owned by the
shareholder of that Fund) have been designated Class D shares. Shares of Dean
Witter Balanced Growth Fund and Dean Witter Balanced Income Fund held prior to
July 28, 1997 have been designated Class C shares except that shares of Dean
Witter Balanced Growth Fund and Dean Witter Balanced Income Fund held prior to
July 28, 1997 that were acquired in exchange for shares of an investment company
offered with a CDSC have been designated Class B shares and those that were
acquired in exchange for shares of an investment company offered with a FESL
have been designated Class A shares.

IV. THE CONVERSION FEATURE 

   Class B shares held before May 1, 1997 will convert to Class A shares in May,
2007, except that Class B shares which are purchased before July 28, 1997 by
trusts for which Dean Witter Trust Company ("DWTC") or Dean Witter Trust FSB
("DWTFSB") provides discretionary trustee services will convert to Class A
shares on or about August 29, 1997 (the CDSC will not be applicable to such
shares upon the conversion). In all other instances, Class B shares of each Fund
will automatically convert to Class A shares, based on the relative net asset
values of the shares of the two Classes on the conversion date, which will be
approximately ten (10) years after the date of the original purchase.
Conversions will be effected once a month. The 10 year period will be calculated
from the last day of the month in which the shares were purchased or, in the
case of Class B shares acquired through an exchange or a series of exchanges,
from the last day of the month in which the original Class B shares were
purchased, provided that shares originally purchased before May 1, 1997 will
convert to Class A shares in May, 2007. Except as set forth below, the
conversion of shares purchased on or after May 1, 1997 will take place in the
month following the tenth anniversary of the purchase. There will also be
converted at that time such proportion of Class B shares acquired through
automatic reinvestment of dividends owned by the shareholder as the total number
of his or her Class B shares converting at the time bears to the total number of
outstanding Class B shares purchased and owned by the shareholder. In the case
of Class B shares held by a 401(k) plan or other employer-sponsored plan
qualified under Section 401(a) of the Internal Revenue Code (the "Code") and for
which DWTC or DWTFSB serves as Trustee or the 401(k) Support Services Group of
DWR serves as recordkeeper, all Class B shares will convert to Class A shares on
the conversion date of the first shares of a Fund purchased by that plan. In the
case of Class B shares previously exchanged

                                        3
<PAGE>
for shares of an "Exchange Fund" (as such term is defined in the prospectus of
each Fund), the period of time the shares were held in the Exchange Fund
(calculated from the last day of the month in which the Exchange Fund shares
were acquired) is excluded from the holding period for conversion. If those
shares are subsequently re-exchanged for Class B shares of a Fund, the holding
period resumes on the last day of the month in which Class B shares are
reacquired.

   Effectiveness of the Conversion Feature is subject to the continuing
availability of a ruling of the Internal Revenue Service or an opinion of
counsel to the effect that (i) the conversion of shares does not constitute a
taxable event under the Code; (ii) Class A shares received on conversion will
have a basis equal to the shareholder's basis in the converted Class B shares
immediately prior to the conversion; and (iii) Class A shares received on
conversion will have a holding period that includes the holding period of the
converted Class B shares. The Conversion Feature may be suspended if the Ruling
or opinion is no longer available. In such event, Class B shares would continue
to be subject to Class B fees under the applicable Fund's 12b-1 Plan.

V. EXCHANGE PRIVILEGES 

   Shares of each Class may be exchanged for shares of the same Class of the
other Funds and for shares of certain other investment companies without the
imposition of an exchange fee as described in the prospectuses and statements of
additional information of the Funds. The exchange privilege of each Fund may be
terminated or revised at any time by the Fund upon such notice as may be
required by applicable regulatory agencies as described in each Fund's
prospectus.

VI. VOTING 

   Each Class shall have exclusive voting rights on any matter that relates
solely to its 12b-1 Plan, except that Class B shareholders will have the right
to vote on any proposed material increase in Class A's expenses, including
payments under the Class A 12b-1 Plan, if such proposal is submitted separately
to Class A shareholders. If the amount of expenses, including payments under the
Class A 12b-1 Plan, is increased materially without the approval of Class B
shareholders, the Fund will establish a new Class A for Class B shareholders
whose shares automatically convert on the same terms as applied to Class A
before the increase. In addition, each Class shall have separate voting rights
on any matter submitted to shareholders in which the interests of one Class
differ from the interests of any other Class.

                                        4
<PAGE>
                              DEAN WITTER FUNDS 
                  MULTIPLE CLASS PLAN PURSUANT TO RULE 18f-3 

                                  SCHEDULE A 
                               AT JULY 28, 1997 

<TABLE>
<CAPTION>
<S>      <C>
1)       Dean Witter American Value Fund
2)       Dean Witter Balanced Growth Fund
3)       Dean Witter Balanced Income Fund
4)       Dean Witter California Tax-Free Income Fund
5)       Dean Witter Capital Appreciation Fund
6)       Dean Witter Capital Growth Securities
7)       Dean Witter Convertible Securities Trust
8)       Dean Witter Developing Growth Securities Trust
9)       Dean Witter Diversified Income Trust
10)      Dean Witter Dividend Growth Securities Inc.
11)      Dean Witter European Growth Fund Inc.
12)      Dean Witter Federal Securities Trust
13)      Dean Witter Financial Services Trust
14)      Dean Witter Global Asset Allocation Fund
15)      Dean Witter Global Dividend Growth Securities
16)      Dean Witter Global Utilities Fund
17)      Dean Witter Health Sciences Trust
18)      Dean Witter High Yield Securities Inc.
19)      Dean Witter Income Builder Fund
20)      Dean Witter Information Fund
21)      Dean Witter Intermediate Income Securities
22)      Dean Witter International SmallCap Fund
23)      Dean Witter Japan Fund
24)      Dean Witter Managers' Select Fund
25)      Dean Witter Market Leader Trust
26)      Dean Witter Mid-Cap Growth Fund
27)      Dean Witter Natural Resource Development Securities Inc.
28)      Dean Witter New York Tax-Free Income Fund
29)      Dean Witter Pacific Growth Fund Inc.
30)      Dean Witter Precious Metals and Minerals Trust
31)      Dean Witter Special Value Fund
32)      Dean Witter Strategist Fund
33)      Dean Witter Tax-Exempt Securities Trust
34)      Dean Witter U.S. Government Securities Trust
35)      Dean Witter Utilities Fund
36)      Dean Witter Value-Added Market Series/Equity Portfolio
37)      Dean Witter World Wide Income Trust
38)      Dean Witter World Wide Investment Trust
</TABLE> 


                                   5


<PAGE>
                                                                 Exhibit 5

                       INVESTMENT MANAGEMENT AGREEMENT 

   AGREEMENT made as of the 31st day of May, 1997, by and between Dean Witter
Health Sciences Trust, an unincorporated business trust organized under the laws
of the Commonwealth of Massachusetts (hereinafter called the "Fund"), and Dean
Witter InterCapital Inc., a Delaware corporation (hereinafter called the
"Investment Manager"):

   WHEREAS, The Fund is engaged in business as an open-end management investment
company and is registered as such under the Investment Company Act of 1940, as
amended (the "Act"); and

   WHEREAS, The Investment Manager is registered as an investment adviser under
the Investment Advisers Act of 1940, and engages in the business of acting as
investment adviser; and

   WHEREAS, The Fund desires to retain the Investment Manager to render
management and investment advisory services in the manner and on the terms and
conditions hereinafter set forth; and

   WHEREAS, The Investment Manager desires to be retained to perform services on
said terms and conditions:

   Now, Therefore, this Agreement 

                             W I T N E S S E T H: 

that in consideration of the premises and the mutual covenants hereinafter 
contained, the Fund and the Investment Manager agree as follows: 

   1. The Fund hereby retains the Investment Manager to act as investment
manager of the Fund and, subject to the supervision of the Trustees, to
supervise the investment activities of the Fund as hereinafter set forth.
Without limiting the generality of the foregoing, the Investment Manager shall
obtain and evaluate such information and advice relating to the economy,
securities and commodities markets and securities and commodities as it deems
necessary or useful to discharge its duties hereunder; shall continuously manage
the assets of the Fund in a manner consistent with the investment objectives and
policies of the Fund; shall determine the securities and commodities to be
purchased, sold or otherwise disposed of by the Fund and the timing of such
purchases, sales and dispositions; and shall take such further action, including
the placing of purchase and sale orders on behalf of the Fund, as the Investment
Manager shall deem necessary or appropriate. The Investment Manager shall also
furnish to or place at the disposal of the Fund such of the information,
evaluations, analyses and opinions formulated or obtained by the Investment
Manager in the discharge of its duties as the Fund may, from time to time,
reasonably request.

   2. The Investment Manager shall, at its own expense, maintain such staff and
employ or retain such personnel and consult with such other persons as it shall
from time to time determine to be necessary or useful to the performance of its
obligations under this Agreement. Without limiting the generality of the
foregoing, the staff and personnel of the Investment Manager shall be deemed to
include persons employed or otherwise retained by the Investment Manager to
furnish statistical and other factual data, advice regarding economic factors
and trends, information with respect to technical and scientific developments,
and such other information, advice and assistance as the Investment Manager may
desire. The Investment Manager shall, as agent for the Fund, maintain the Fund's
records and books of account (other than those maintained by the Fund's transfer
agent, registrar, custodian and other agencies). All such books and records so
maintained shall be the property of the Fund and, upon request therefor, the
Investment Manager shall surrender to the Fund such of the books and records so
requested.

   3. The Fund will, from time to time, furnish or otherwise make available to
the Investment Manager such financial reports, proxy statements and other
information relating to the business and affairs of the Fund as the Investment
Manager may reasonably require in order to discharge its duties and obligations
hereunder.

   4. The Investment Manager shall bear the cost of rendering the investment
management and supervisory services to be performed by it under this Agreement,
and shall, at its own expense, pay the compensation of the officers and
employees, if any, of the Fund, and provide such office space, facilities

                                        1
<PAGE>
and equipment and such clerical help and bookkeeping services as the Fund shall
reasonably require in the conduct of its business. The Investment Manager shall
also bear the cost of telephone service, heat, light, power and other utilities
provided to the Fund.

   5. The Fund assumes and shall pay or cause to be paid all other expenses of
the Fund, including without limitation: fees pursuant to any plan of
distribution that the Fund may adopt; the charges and expenses of any registrar,
any custodian or depository appointed by the Fund for the safekeeping of its
cash, portfolio securities or commodities and other property, and any stock
transfer or dividend agent or agents appointed by the Fund; brokers' commissions
chargeable to the Fund in connection with portfolio transactions to which the
Fund is a party; all taxes, including securities or commodities issuance and
transfer taxes, and fees payable by the Fund to federal, state or other
governmental agencies; the cost and expense of engraving or printing
certificates representing shares of the Fund; all costs and expenses in
connection with the registration and maintenance of registration of the Fund and
its shares with the Securities and Exchange Commission and various states and
other jurisdictions (including filing fees and legal fees and disbursements of
counsel); the cost and expense of printing, including typesetting, and
distributing prospectuses and statements of additional information of the Fund
and supplements thereto to the Fund's shareholders; all expenses of
shareholders' and Trustees' meetings and of preparing, printing and mailing
proxy statements and reports to shareholders; fees and travel expenses of
Trustees or members of any advisory board or committee who are not employees of
the Investment Manager or any corporate affiliate of the Investment Manager; all
expenses incident to the payment of any dividend, distribution, withdrawal or
redemption, whether in shares or in cash; charges and expenses of any outside
service used for pricing of the Fund's shares; charges and expenses of legal
counsel, including counsel to the Trustees of the Fund who are not interested
persons (as defined in the Act) of the Fund or the Investment Manager, and of
independent accountants, in connection with any matter relating to the Fund;
membership dues of industry associations; interest payable on Fund borrowings;
postage; insurance premiums on property or personnel (including officers and
Trustees) of the Fund which inure to its benefit; extraordinary expenses
(including but not limited to legal claims and liabilities and litigation costs
and any indemnification related thereto); and all other charges and costs of the
Fund's operation unless otherwise explicitly provided herein.

   6. For the services to be rendered, the facilities furnished, and the
expenses assumed by the Investment Manager, the Fund shall pay to the Investment
Manager monthly compensation determined by applying the following annual rates
to the Fund's daily net assets: 1.0% of daily net assets up to $500 million; and
0.95% of daily net assets over $500 million. Except as hereinafter set forth,
compensation under this Agreement shall be calculated and accrued daily and the
amounts of the daily accruals shall be paid monthly. Such calculations shall be
made by applying 1/365ths of the annual rates to the Fund's net assets each day
determined as of the close of business on that day or the last previous business
day. If this Agreement becomes effective subsequent to the first day of a month
or shall terminate before the last day of a month, compensation for that part of
the month this Agreement is in effect shall be prorated in a manner consistent
with the calculation of the fees as set forth above.

   Subject to the provisions of paragraph 7 hereof, payment of the Investment
Manager's compensation for the preceding month shall be made as promptly as
possible after completion of the computations contemplated by paragraph 7
hereof.

   7. In the event the operating expenses of the Fund, including amounts payable
to the Investment Manager pursuant to paragraph 6 hereof, for any fiscal year
ending on a date on which this Agreement is in effect, exceed the expense
limitations applicable to the Fund imposed by state securities laws or
regulations thereunder, as such limitations may be raised or lowered from time
to time, the Investment Manager shall reduce its management fee to the extent of
such excess and, if required, pursuant to any such laws or regulations, will
reimburse the Fund for annual operating expenses in excess of any expense
limitation that may be applicable; provided, however, there shall be excluded
from such expenses the amount of any interest, taxes, brokerage commissions,
distribution fees and extraordinary expenses (including but not limited to legal
claims and liabilities and litigation costs and any indemnification related
thereto) paid or payable by the Fund. Such reduction, if any, shall be computed
and accrued daily, shall be settled on a monthly basis, and shall be based upon
the expense limitation applicable to the Fund as

                                        2
<PAGE>
at the end of the last business day of the month. Should two or more such
expense limitations be applicable as at the end of the last business day of the
month, that expense limitation which results in the largest reduction in the
Investment Manager's fee shall be applicable.

   For purposes of this provision, should any applicable expense limitation 
be based upon the gross income of the Fund, such gross income shall include, 
but not be limited to, interest on debt securities in the Fund's portfolio 
accrued to and including the last day of the Fund's fiscal year, and 
dividends declared on equity securities in the Fund's portfolio, the record 
dates for which fall on or prior to the last day of such fiscal year, but 
shall not include gains from the sale of securities. 

   8. The Investment Manager will use its best efforts in the supervision and
management of the investment activities of the Fund, but in the absence of
willful misfeasance, bad faith, gross negligence or reckless disregard of its
obligations hereunder, the Investment Manager shall not be liable to the Fund or
any of its investors for any error of judgment or mistake of law or for any act
or omission by the Investment Manager or for any losses sustained by the Fund or
its investors.

   9. Nothing contained in this Agreement shall prevent the Investment Manager
or any affiliated person of the Investment Manager from acting as investment
adviser or manager for any other person, firm or corporation and shall not in
any way bind or restrict the Investment Manager or any such affiliated person
from buying, selling or trading any securities or commodities for their own
accounts or for the account of others for whom they may be acting. Nothing in
this Agreement shall limit or restrict the right of any Trustee, officer or
employee of the Investment Manager to engage in any other business or to devote
his or her time and attention in part to the management or other aspects of any
other business whether of a similar or dissimilar nature.

   10. This Agreement shall remain in effect until April 30, 1999 and from year
to year thereafter provided such continuance is approved at least annually by
the vote of holders of a majority, as defined in the Investment Company Act of
1940, as amended (the "Act"), of the outstanding voting securities of the Fund
or by the Trustees of the Fund; provided that in either event such continuance
is also approved annually by the vote of a majority of the Trustees of the Fund
who are not parties to this Agreement or "interested persons" (as defined in the
Act) of any such party, which vote must be cast in person at a meeting called
for the purpose of voting on such approval; provided, however, that (a) the Fund
may, at any time and without the payment of any penalty, terminate this
Agreement upon thirty days' written notice to the Investment Manager, either by
majority vote of the Trustees of the Fund or by the vote of a majority of the
outstanding voting securities of the Fund; (b) this Agreement shall immediately
terminate in the event of its assignment (to the extent required by the Act and
the rules thereunder) unless such automatic terminations shall be prevented by
an exemptive order of the Securities and Exchange Commission; and (c) the
Investment Manager may terminate this Agreement without payment of penalty on
thirty days' written notice to the Fund. Any notice under this Agreement shall
be given in writing, addressed and delivered, or mailed post-paid, to the other
party at the principal office of such party.

   11. This Agreement may be amended by the parties without the vote or consent
of the shareholders of the Fund to supply any omission, to cure, correct or
supplement any ambiguous, defective or inconsistent provision hereof, or if they
deem it necessary to conform this Agreement to the requirements of applicable
federal laws or regulations, but neither the Fund nor the Investment Manager
shall be liable for failing to do so.

   12. This Agreement shall be construed in accordance with the laws of the
State of New York and the applicable provisions of the Act. To the extent the
applicable law of the State of New York, or any of the provisions herein,
conflicts with the applicable provisions of the Act, the latter shall control.

   13. The Investment Manager and the Fund each agree that the name "Dean
Witter," which comprises a component of the Fund's name, is a property right of
Dean Witter Reynolds Inc. The Fund agrees and consents that (i) it will only use
the name "Dean Witter" as a component of its name and for no other purpose, (ii)
it will not purport to grant to any third party the right to use the name "Dean
Witter" for any purpose, (iii) the Investment Manager or its parent, Morgan
Stanley, Dean Witter,

                                        3
<PAGE>
Discover & Co., or any corporate affiliate of the Investment Manager's parent,
may use or grant to others the right to use the name "Dean Witter," or any
combination or abbreviation thereof, as all or a portion of a corporate or
business name or for any commercial purpose, including a grant of such right to
any other investment company, (iv) at the request of the Investment Manager or
its parent, the Fund will take such action as may be required to provide its
consent to the use of the name "Dean Witter," or any combination or abbreviation
thereof, by the Investment Manager or its parent or any corporate affiliate of
the Investment Manager's parent, or by any person to whom the Investment Manager
or its parent or any corporate affiliate of the Investment Manager's parent
shall have granted the right to such use, and (v) upon the termination of any
investment advisory agreement into which the Investment Manager and the Fund may
enter, or upon termination of affiliation of the Investment Manager with its
parent, the Fund shall, upon request by the Investment Manager or its parent,
cease to use the name "Dean Witter" as a component of its name, and shall not
use the name, or any combination or abbreviation thereof, as a part of its name
or for any other commercial purpose, and shall cause its officers, Trustees and
shareholders to take any and all actions which the Investment Manager or its
parent may request to effect the foregoing and to reconvey to the Investment
Manager or its parent any and all rights to such name.

   14. The Declaration of Trust establishing Dean Witter Health Sciences Trust,
dated May 26, 1992, 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 Dean Witter Health Sciences 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 Dean Witter Health Sciences 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 or otherwise, in connection with the
affairs of said Dean Witter Health Sciences Trust, but the Trust Estate only
shall be liable.

   IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement on the day and year first above written in New York, New York.

                                         DEAN WITTER HEALTH SCIENCES TRUST 


                                         By:.................................. 



Attest:  ................................ 


                                         DEAN WITTER INTERCAPITAL INC. 


Attest:  ................................ 

                                         By:.................................. 
                             

                                        4


<PAGE>
                                                                 Exhibit 6(a)

                              DEAN WITTER FUNDS 

                            DISTRIBUTION AGREEMENT 

   AGREEMENT made as of this 31st day of May, 1997 between each of the 
open-end investment companies to which Dean Witter InterCapital Inc. acts as 
investment manager, that are listed on Schedule A, as may be amended from 
time to time (each, a "Fund" and collectively, the "Funds"), and Dean Witter 
Distributors Inc., a Delaware corporation (the "Distributor"). 

                             W I T N E S S E T H: 

   WHEREAS, each Fund is registered as an open-end investment company under 
the Investment Company Act of 1940, as amended (the "1940 Act"), and it is in 
the interest of each Fund to offer its shares for sale continuously, and 

   WHEREAS, each Fund and the Distributor wish to enter into an agreement 
with each other with respect to the continuous offering of each Fund's 
transferable shares, of $0.01 par value (the "Shares"), to commence on the 
date listed above, in order to promote the growth of each Fund and facilitate 
the distribution of its shares. 

   NOW, THEREFORE, the parties agree as follows: 

   SECTION 1. Appointment of the Distributor. 

   (a) Each Fund hereby appoints the Distributor as the principal underwriter 
and distributor of the Fund to sell Shares to the public on the terms set 
forth in this Agreement and that Fund's prospectus and the Distributor hereby 
accepts such appointment and agrees to act hereunder. Each Fund, during the 
term of this Agreement, shall sell Shares to the Distributor upon the terms 
and conditions set forth herein. 

   (b) The Distributor agrees to purchase Shares, as principal for its own 
account, from each Fund and to sell Shares as principal to investors, and 
securities dealers, including Dean Witter Reynolds Inc. ("DWR"), an affiliate 
of the Distributor, upon the terms described herein and in that Fund's 
prospectus (the "Prospectus") and statement of additional information 
included in the Fund's registration statement (the "Registration Statement") 
most recently filed from time to time with the Securities and Exchange 
Commission (the "SEC") and effective under the Securities Act of 1933, as 
amended (the "1933 Act"), and the 1940 Act or as the Prospectus may be 
otherwise amended or supplemented and filed with the SEC pursuant to Rule 497 
under the 1933 Act. 

   SECTION 2 Exclusive Nature of Duties. The Distributor shall be the 
exclusive principal underwriter and distributor of each Fund, except that the 
exclusive rights granted to the Distributor to sell the Shares shall not 
apply to Shares issued by each Fund: (i) in connection with the merger or 
consolidation of any other investment company or personal holding company 
with the Fund or the acquisition by purchase or otherwise of all (or 
substantially all) the assets or the outstanding shares of any such company 
by the Fund; (ii) pursuant to reinvestment of dividends or capital gains 
distributions; or (iii) pursuant to the reinstatement privilege afforded 
redeeming shareholders. 

   SECTION 3. Purchase of Shares from each Fund. 

   (a) The Distributor shall have the right to buy from each Fund the Shares 
needed, but not more than the Shares needed (except for clerical errors in 
transmission), to fill unconditional orders for Shares placed with the 
Distributor by investors or securities dealers. The price which the 
Distributor shall pay for the Shares so purchased from the Fund shall be the 
net asset value, determined as set forth in the Prospectus, used in 
determining the public offering price on which such orders were based. 

   (b) The Shares are to be resold by the Distributor at the public offering 
price of Shares as set forth in the Prospectus, to investors or to securities 
dealers, including DWR, who have entered into selected dealer agreements with 
the Distributor upon the terms and conditions set forth in Section 7 hereof 
("Selected Dealers"). 

   (c) Each Fund shall have the right to suspend the sale of the Shares at 
times when redemption is suspended pursuant to the conditions set forth in 
Section 4(f) hereof. Each Fund shall also have the right 

                                1           
<PAGE>
to suspend the sale of the Shares if trading on the New York Stock Exchange 
shall have been suspended, if a banking moratorium shall have been declared 
by federal or New York authorities, or if there shall have been some other 
extraordinary event which, in the judgment of a Fund, makes it impracticable 
to sell its Shares. 

   (d) Each Fund, or any agent of a Fund designated in writing by the Fund, 
shall be promptly advised of all purchase orders for Shares received by the 
Distributor. Any order may be rejected by a Fund; provided, however, that a 
Fund will not arbitrarily or without reasonable cause refuse to accept orders 
for the purchase of Shares. The Distributor will confirm orders upon their 
receipt, and each Fund (or its agent) upon receipt of payment therefor and 
instructions will deliver share certificates for such Shares or a statement 
confirming the issuance of Shares. Payment shall be made to the Fund in New 
York Clearing House funds. The Distributor agrees to cause such payment and 
such instructions to be delivered promptly to the Fund (or its agent). 

   (e) With respect to Shares sold by any Selected Dealer, the Distributor is 
authorized to direct each Fund's transfer agent to receive instructions 
directly from the Selected Dealer on behalf of the Distributor as to 
registration of Shares in the names of investors and to confirm issuance of 
the Shares to such investors. The Distributor is also authorized to instruct 
the transfer agent to receive payment directly from the Selected Dealer on 
behalf of the Distributor, for prompt transmittal to each Fund's custodian, 
of the purchase price of the Shares. In such event the Distributor shall 
obtain from the Selected Dealer and maintain a record of such registration 
instructions and payments. 

   SECTION 4. Repurchase or Redemption of Shares. 

   (a) Any of the outstanding Shares of a Fund may be tendered for redemption 
at any time, and each Fund agrees to redeem its Shares so tendered in 
accordance with the applicable provisions set forth in its Prospectus. The 
price to be paid to redeem the Shares shall be equal to the net asset value 
determined as set forth in the Prospectus less, in the case of a Fund whose 
Shares are offered with a contingent deferred sales charge ("CDSC"), any 
applicable CDSC. Upon any redemption of Shares the Fund shall pay the total 
amount of the redemption price in New York Clearing House funds in accordance 
with applicable provisions of the Prospectus. 

   (b) In the case of a Fund whose Shares are offered with a front-end sales 
charge, the redemption by a Fund of any of its Shares purchased by or through 
the Distributor will not affect the applicable front-end sales charge secured 
by the Distributor or any Selected Dealer in the course of the original sale, 
except that if any Shares are tendered for redemption within seven business 
days after the date of the confirmation of the original purchase, the right 
to the applicable front-end sales charge shall be forfeited by the 
Distributor and the Selected Dealer which sold such Shares. 

   (c) In the case of a Fund whose Shares are offered with a CDSC, the 
proceeds of any redemption of Shares shall be paid by each Fund as follows: 
(i) any applicable CDSC shall be paid to the Distributor or to the Selected 
Dealer, or, when applicable, pursuant to the Rules of the Association of the 
National Association of Securities Dealers, Inc. ("NASD"), retained by the 
Fund and (ii) the balance shall be paid to the redeeming shareholders, in 
each case in accordance with applicable provisions of its Prospectus in New 
York Clearing House funds. The Distributor is authorized to direct a Fund to 
pay directly to the Selected Dealer any CDSC payable by a Fund to the 
Distributor in respect of Shares sold by the Selected Dealer to the redeeming 
shareholders. 

   (d) The Distributor is authorized, as agent for the Fund, to repurchase 
Shares, represented by a share certificate which is delivered to any office 
of the Distributor in accordance with applicable provisions set forth in each 
Fund's Prospectus. The Distributor shall promptly transmit to the transfer 
agent of the Fund for redemption all Shares so delivered. The Distributor 
shall be responsible for the accuracy of instructions transmitted to the 
Fund's transfer agent in connection with all such repurchases. 

   (e) The Distributor is authorized, as agent for each Fund, to repurchase 
Shares held in a shareholder's account with a Fund for which no share 
certificate has been issued, upon the telephonic request of the shareholders, 
or at the discretion of the Distributor. The Distributor shall promptly 
transmit to the 

                                2           
<PAGE>
transfer agent of the Fund, for redemption, all such orders for repurchase of 
Shares. Payment for Shares repurchased may be made by a Fund to the 
Distributor for the account of the shareholder. The Distributor shall be 
responsible for the accuracy of instructions transmitted to the Fund's 
transfer agent in connection with all such repurchases. 

   (f) Redemption of its Shares or payment by a Fund may be suspended at 
times when the New York Stock Exchange is closed, when trading on said 
Exchange is restricted, when an emergency exists as a result of which 
disposal by a Fund of securities owned by it is not reasonably practicable or 
it is not reasonably practicable for a Fund fairly to determine the value of 
its net assets, or during any other period when the SEC, by order, so 
permits. 

   (g) With respect to its Shares tendered for redemption or repurchase by 
any Selected Dealer on behalf of its customers, the Distributor is authorized 
to instruct the transfer agent of a Fund to accept orders for redemption or 
repurchase directly from the Selected Dealer on behalf of the Distributor and 
to instruct the Fund to transmit payments for such redemptions and 
repurchases directly to the Selected Dealer on behalf of the Distributor for 
the account of the shareholder. The Distributor shall obtain from the 
Selected Dealer, and shall maintain, a record of such orders. The Distributor 
is further authorized to obtain from the Fund, and shall maintain, a record 
of payment made directly to the Selected Dealer on behalf of the Distributor. 

   SECTION 5. Duties of the Fund. 

   (a) Each Fund shall furnish to the Distributor copies of all information, 
financial statements and other papers which the Distributor may reasonably 
request for use in connection with the distribution of its Shares, including 
one certified copy, upon request by the Distributor, of all financial 
statements prepared by the Fund and examined by independent accountants. Each 
Fund shall, at the expense of the Distributor, make available to the 
Distributor such number of copies of its Prospectus as the Distributor shall 
reasonably request. 

   (b) Each Fund shall take, from time to time, but subject to the necessary 
approval of its shareholders, all necessary action to fix the number of its 
authorized Shares and to register Shares under the 1933 Act, to the end that 
there will be available for sale such number of Shares as investors may 
reasonably be expected to purchase. 

   (c) Each Fund shall use its best efforts to pay the filing fees for an 
appropriate number of its Shares to be sold under the securities laws of such 
states as the Distributor and the Fund may approve. Any qualification to sell 
its Shares in a state may be withheld, terminated or withdrawn by a Fund at 
any time in its discretion. As provided in Section 8(c) hereof, such filing 
fees shall be paid by the Fund. The Distributor shall furnish any information 
and other material relating to its affairs and activities as may be required 
by a Fund in connection with the sale of its Shares in any state. 

   (d) Each Fund shall, at the expense of the Distributor, furnish, in 
reasonable quantities upon request by the Distributor, copies of its annual 
and interim reports. 

   SECTION 6. Duties of the Distributor. 

   (a) The Distributor shall sell shares of each Fund through DWR and may 
sell shares through other securities dealers and its own Account Executives, 
and shall devote reasonable time and effort to promote sales of the Shares, 
but shall not be obligated to sell any specific number of Shares. The 
services of the Distributor hereunder are not exclusive and it is understood 
that the Distributor may act as principal underwriter for other registered 
investment companies, so long as the performance of its obligations hereunder 
is not impaired thereby. It is also understood that Selected Dealers, 
including DWR, may also sell shares for other registered investment 
companies. 

   (b) Neither the Distributor nor any Selected Dealer shall give any 
information or make any representations, other than those contained in the 
Registration Statement or related Prospectus and any sales literature 
specifically approved by the appropriate Fund. 

   (c) The Distributor agrees that it will at all times comply with the 
applicable terms and limitations of the Rules of the Association of the NASD. 

                                3           
<PAGE>
   SECTION 7. Selected Dealers Agreements. 

   (a) The Distributor shall have the right to enter into selected dealer 
agreements with Selected Dealers for the sale of Shares. In making agreements 
with Selected Dealers, the Distributor shall act only as principal and not as 
agent for a Fund. Shares sold to Selected Dealers shall be for resale by such 
dealers only at the public offering price set forth in the Prospectus. With 
respect to Funds whose Shares are offered with a front-end sales charge, in 
such agreement the Distributor shall have the right to fix the portion of the 
applicable front-end sales charge which may be allocated to the Selected 
Dealers. 

   (b) Within the United States, the Distributor shall offer and sell Shares 
only to Selected Dealers that are members in good standing of the NASD. 

   (c) The Distributor shall adopt and follow procedures, as approved by each 
Fund, for the confirmation of sales of its Shares to investors and Selected 
Dealers, the collection of amounts payable by investors and Selected Dealers 
on such sales, and the cancellation of unsettled transactions, as may be 
necessary to comply with the requirements of the NASD, as such requirements 
may from time to time exist. 

   SECTION 8. Payment of Expenses. 

   (a) Each Fund shall bear all costs and expenses of the Fund, including 
fees and disbursements of legal counsel including counsel to the 
Directors/Trustees of each Fund who are not interested persons (as defined in 
the 1940 Act) of the Fund or the Distributor, and independent accountants, in 
connection with the preparation and filing of any required Registration 
Statements and Prospectuses and all amendments and supplements thereto, and 
the expense of preparing, printing, mailing and otherwise distributing 
prospectuses and statements of additional information, annual or interim 
reports or proxy materials to shareholders. 

   (b) The Distributor shall bear all expenses incurred by it in connection 
with its duties and activities under this Agreement including the payment to 
Selected Dealers of any sales commissions, service fees and other expenses 
for sales of a Fund's Shares (except such expenses as are specifically 
undertaken herein by a Fund) incurred or paid by Selected Dealers, including 
DWR. The Distributor shall bear the costs and expenses of preparing, printing 
and distributing any supplementary sales literature used by the Distributor 
or furnished by it for use by Selected Dealers in connection with the 
offering of the Shares for sale. Any expenses of advertising incurred in 
connection with such offering will also be the obligation of the Distributor. 
It is understood and agreed that, so long as a Fund's Plan of Distribution 
pursuant to Rule 12b-1 under the 1940 Act ("Rule 12b-1 Plan") continues in 
effect, any expenses incurred by the Distributor hereunder may be paid in 
accordance with the terms of such Rule 12b-1 Plan. 

   (c) Each Fund shall pay the filing fees, and, if necessary or advisable in 
connection therewith, bear the cost and expense of qualifying each Fund as a 
broker or dealer, in such states of the United States or other jurisdictions 
as shall be selected by the Fund and the Distributor pursuant to Section 5(c) 
hereof and the cost and expenses payable to each such state for continuing to 
offer Shares therein until the Fund decides to discontinue selling Shares 
pursuant to Section 5(c) hereof. 

   SECTION 9. Indemnification. 

   (a) Each Fund shall indemnify and hold harmless the Distributor and each 
person, if any, who controls the Distributor against any loss, liability, 
claim, damage or expense (including the reasonable cost of investigating or 
defending any alleged loss, liability, claim, damage or expense and 
reasonable counsel fees incurred in connection therewith) arising by reason 
of any person acquiring any Shares, which may be based upon the 1933 Act, or 
on any other statute or at common law, on the ground that the Registration 
Statement or related Prospectus and Statement of Additional Information, as 
from time to time amended and supplemented, or the annual or interim reports 
to shareholders of a Fund, includes an untrue statement of a material fact or 
omits to state a material fact required to be stated therein or necessary in 
order to make the statements therein not misleading, unless such statement or 
omission was made in reliance upon, and in conformity with, information 
furnished to the Fund in connection therewith by or on behalf of the 
Distributor; provided, however, that in no case (i) is the indemnity of a 
Fund in 

                                4           
<PAGE>
favor of the Distributor and any such controlling persons to be deemed to 
protect the Distributor or any such controlling persons thereof against any 
liability to a Fund or its security holders to which the Distributor or any 
such controlling persons would otherwise be subject by reason of willful 
misfeasance, bad faith or gross negligence in the performance of its duties 
or by reason of reckless disregard of its obligations and duties under this 
Agreement; or (ii) is a Fund to be liable under its indemnity agreement 
contained in this paragraph with respect to any claim made against the 
Distributor or any such controlling persons, unless the Distributor or any 
such controlling persons, as the case may be, shall have notified the Fund in 
writing within a reasonable time after the summons or other first legal 
process giving information of the nature of the claim shall have been served 
upon the Distributor or such controlling persons (or after the Distributor or 
such controlling persons shall have received notice of such service on any 
designated agent), but failure to notify the Fund of any such claim shall not 
relieve it from any liability which it may have to the person against whom 
such action is brought otherwise than on account of its indemnity agreement 
contained in this paragraph. Each Fund will be entitled to participate at its 
own expense in the defense, or, if it so elects, to assume the defense, of 
any such suit brought to enforce any such liability, but if a Fund elects to 
assume the defense, such defense shall be conducted by counsel chosen by it 
and satisfactory to the Distributor or such controlling person or persons, 
defendant or defendants in the suit. In the event the Fund elects to assume 
the defense of any such suit and retain such counsel, the Distributor or such 
controlling person or persons, defendant or defendants in the suit, shall 
bear the fees and expenses of any additional counsel retained by them, but, 
in case the Fund does not elect to assume the defense of any such suit, it 
will reimburse the Distributor or such controlling person or persons, 
defendant or defendants in the suit, for the reasonable fees and expenses of 
any counsel retained by them. Each Fund shall promptly notify the Distributor 
of the commencement of any litigation or proceedings against it or any of its 
officers or Directors/Trustees in connection with the issuance or sale of the 
Shares. 

   (b)   (i) The Distributor shall indemnify and hold harmless each Fund and 
each of its Directors/Trustees and officers and each person, if any, who 
controls the Fund against any loss, liability, claim, damage, or expense 
described in the indemnity contained in subsection (a) of this Section, but 
only with respect to statements or omissions made in reliance upon, and in 
conformity with, information furnished to a Fund in writing by or on behalf 
of the Distributor for use in connection with the Registration Statement or 
related Prospectus and Statement of Additional Information, as from time to 
time amended, or the annual or interim reports to shareholders. 

        (ii) The Distributor shall indemnify and hold harmless each Fund and 
each Fund's transfer agent, individually and in its capacity as the Fund's 
transfer agent, from and against any claims, damages and liabilities which 
arise as a result of actions taken pursuant to instructions from, or on 
behalf of, the Distributor to: (1) redeem all or a part of shareholder 
accounts in the Fund pursuant to Section 4(g) hereof and pay the proceeds to, 
or as directed by, the Distributor for the account of each shareholder whose 
Shares are so redeemed; and (2) register Shares in the names of investors, 
confirm the issuance thereof and receive payment therefor pursuant to Section 
3(e) hereof. 

       (iii) In case any action shall be brought against a Fund or any person 
so indemnified by this Section 9(b) in respect of which indemnity may be 
sought against the Distributor, the Distributor shall have the rights and 
duties given to a Fund, and the Fund and each person so indemnified shall 
have the rights and duties given to the Distributor, by the provisions of 
subsection (a) of this Section 9. 

   (c) If the indemnification provided for in this Section 9 is unavailable 
or insufficient to hold harmless an indemnified party under subsection (a) or 
(b) above in respect of any losses, claims, damages, liabilities or expenses 
(or actions in respect thereof) referred to herein, then each indemnifiying 
party shall contribute to the amount paid or payable by such indemnified 
party as a result of such losses, claims, damages, liabilities or expenses 
(or actions in respect thereof) in such proportion as is appropriate to 
reflect the relative benefits received by a Fund on the one hand and the 
Distributor on the other from the offering of the Shares. If, however, the 
allocation provided by the immediately preceding sentence is not permitted by 
applicable law, then each indemnifying party shall contribute to such amount 
paid or payable by such indemnified party in such proportion as is 
appropriate to reflect not only such relative benefits but also the relative 
fault of a Fund on the one hand and the Distributor on the other in 
connection with the statements or omissions which resulted in such losses, 
claims, damages, liabilities or expenses (or actions 

                                5           
<PAGE>
in respect thereof), as well as any other relevant equitable considerations. 
The relative benefits received by a Fund on the one hand and the Distributor 
on the other shall be deemed to be in the same proportion as the total net 
proceeds from the offering (before deducting expenses) received by the Fund 
bear to the total compensation received by the Distributor, in each case as 
set forth in the Prospectus. The relative fault shall be determined by 
reference to, among other things, whether the untrue or alleged untrue 
statement of a material fact or the omission or alleged omission to state a 
material fact relates to information supplied by a Fund or the Distributor 
and the parties' relative intent, knowledge, access to information and 
opportunity to correct or prevent such statement or omission. Each Fund and 
the Distributor agree that it would not be just and equitable if contribution 
were determined by pro rata allocation or by any other method of allocation 
which does not take into account the equitable considerations referred to 
above. The amount paid or payable by an indemnified party as a result of the 
losses, claims, damages, liabilities or expenses (or actions in respect 
thereof) referred to above shall be deemed to include any legal or other 
expenses reasonably incurred by such indemnified party in connection with 
investigating or defending any such claim. Notwithstanding the provisions of 
this subsection (c), the Distributor shall not be required to contribute any 
amount in excess of the amount by which the total price at which the Shares 
distributed by it to the public were offered to the public exceeds the amount 
of any damages which it has otherwise been required to pay by reason of such 
untrue or alleged untrue statement or omission or alleged omission. No person 
guilty of fraudulent misrepresentation (within the meaning of Section 11(f) 
of the 1933 Act) shall be entitled to contribution from any person who was 
not guilty of such fraudulent misrepresentation. 

   SECTION 10. Duration and Termination of this Agreement. This Agreement 
shall become effective with respect to a Fund as of the date first above 
written and shall remain in force until April 30, 1998, and thereafter, but 
only so long as such continuance is specifically approved at least annually 
by (i) the Board of Directors/Trustees of each Fund, or by the vote of a 
majority of the outstanding voting securities of the Fund, cast in person or 
by proxy, and (ii) a majority of those Directors/Trustees who are not parties 
to this Agreement or interested persons of any such party and who have no 
direct or indirect financial interest in this Agreement or in the operation 
of the Fund's Rule 12b-1 Plan or in any agreement related thereto, cast in 
person at a meeting called for the purpose of voting upon such approval. 

   This Agreement may be terminated at any time without the payment of any 
penalty, by the Directors/Trustees of a Fund, by a majority of the 
Directors/Trustees of a Fund who are not interested persons of the Fund and 
who have no direct or indirect financial interest in this Agreement, or by 
vote of a majority of the outstanding voting securities of a Fund, or by the 
Distributor, on sixty days' written notice to the other party. This Agreement 
shall automatically terminate in the event of its assignment. 

   The terms "vote of a majority of the outstanding voting securities," 
"assignment" and "interested person," when used in this Agreement, shall have 
the respective meanings specified in the 1940 Act. 

   SECTION 11. Amendments of this Agreement. This Agreement may be amended by 
the parties only if such amendment is specifically approved by (i) the 
Directors/Trustees of a Fund, or by the vote of a majority of outstanding 
voting securities of a Fund, and (ii) a majority of those Directors/Trustees 
of a Fund who are not parties to this Agreement or interested persons of any 
such party and who have no direct or indirect financial interest in this 
Agreement or in any Agreement related to the Fund's Rule 12b-1 Plan, cast in 
person at a meeting called for the purpose of voting on such approval. 

   SECTION 12. Additional Funds. If at any time another Fund desires to 
appoint the Distributor as its principal underwriter and distributor under 
this Agreement, it shall notify the Distributor in writing. If the 
Distributor is willing to serve as the Fund's principal underwriter and 
distributor under this Agreement, it shall notify the Fund in writing, 
whereupon such other Fund shall become a Fund hereunder. 

   SECTION 13. Governing Law. This Agreement shall be construed in accordance 
with the law of the State of New York and the applicable provisions of the 
1940 Act. To the extent the applicable law of the State of New York, or any 
of the provisions herein, conflicts with the applicable provisions of the 
1940 Act, the latter shall control. 

                                6           
<PAGE>
   SECTION 14. Personal Liability. With respect to any Fund that is organized 
as an unincorporated business trust under the laws of the Commonwealth of 
Massachusetts, its Declaration of the Trust (each, a "Declaration") is on 
file in the office of the Secretary of the Commonwealth of Massachusetts. 
Each Declaration provides that the name of the Fund 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 any 
Fund shall be held to any personal liability, nor shall resort be had to 
their private property for the satisfaction of any obligation or claim or 
otherwise, in connection with the affairs of any Fund, but the Trust Estate 
only shall be liable. 

   IN WITNESS WHEREOF, the parties hereto have executed and delivered this 
Agreement as of the day and year first written in New York, New York. 

                                        ON BEHALF OF THE FUNDS SET FORTH ON 
                                        SCHEDULE A, ATTACHED HERETO 

                                        By:
                                           ..................................

                                        DEAN WITTER DISTRIBUTORS INC. 

                                        By:
                                           ..................................

                                7           
<PAGE>
                              DEAN WITTER FUNDS 
                            DISTRIBUTION AGREEMENT 

                                  SCHEDULE A 
                               AT MAY 31, 1997 

<TABLE>
<CAPTION>
<S>  <C>
1)   Dean Witter American Value Fund 
2)   Dean Witter Balanced Growth Fund 
3)   Dean Witter Balanced Income Fund 
4)   Dean Witter California Tax-Free Income Fund 
5)   Dean Witter Capital Appreciation Fund 
6)   Dean Witter Capital Growth Securities 
7)   Dean Witter Convertible Securities Trust 
8)   Dean Witter Developing Growth Securities Trust 
9)   Dean Witter Diversified Income Trust 
10)  Dean Witter Dividend Growth Securities Inc. 
11)  Dean Witter European Growth Fund Inc. 
12)  Dean Witter Federal Securities Trust 
13)  Dean Witter Financial Services Trust 
14)  Dean Witter Global Asset Allocation Fund 
15)  Dean Witter Global Dividend Growth Securities 
16)  Dean Witter Global Utilities Fund 
17)  Dean Witter Health Sciences Trust 
18)  Dean Witter High Yield Securities Inc. 
19)  Dean Witter Income Builder Fund 
20)  Dean Witter Information Fund 
21)  Dean Witter Intermediate Income Securities 
22)  Dean Witter International SmallCap Fund 
23)  Dean Witter Japan Fund 
24)  Dean Witter Managers' Select Fund 
25)  Dean Witter Market Leader Trust 
26)  Dean Witter Mid-Cap Growth Fund 
27)  Dean Witter NaturalResource Development Securities Inc. 
28)  Dean Witter New York Tax-Free Income Fund 
29)  Dean Witter Pacific Growth Fund Inc. 
30)  Dean Witter Precious Metals and Minerals Trust 
31)  Dean Witter Special Value Fund 
32)  Dean Witter Strategist Fund 
33)  Dean Witter Tax-Exempt Securities Trust 
34)  Dean Witter U.S. Government Securities Trust 
35)  Dean Witter Utilities Fund 
36)  Dean Witter Value-Added Market Series/Equity Portfolio 
37)  Dean Witter World Wide Income Trust 
38)  Dean Witter World Wide Investment Trust 
</TABLE>

                                8           


<PAGE>

                                                                 Exhibit 6(b)

                              DEAN WITTER FUNDS 

                            DISTRIBUTION AGREEMENT 

   AGREEMENT made as of this 28th day of July, 1997 between each of the open-end
investment companies to which Dean Witter InterCapital Inc. acts as investment
manager, that are listed on Schedule A, as may be amended from time to time
(each, a "Fund" and collectively, the "Funds"), and Dean Witter Distributors
Inc., a Delaware corporation (the "Distributor").

                             W I T N E S S E T H: 

   WHEREAS, each Fund is registered as an open-end investment company under the
Investment Company Act of 1940, as amended (the "1940 Act"), and it is in the
interest of each Fund to offer its shares for sale continuously, and

   WHEREAS, each Fund and the Distributor wish to enter into an agreement with
each other with respect to the continuous offering of each Fund's transferable
shares, of $0.01 par value (the "Shares"), to commence on the date listed above,
in order to promote the growth of each Fund and facilitate the distribution of
its shares.

   NOW, THEREFORE, the parties agree as follows: 

   SECTION 1. Appointment of the Distributor. 

   (a) Each Fund hereby appoints the Distributor as the principal underwriter
and distributor of the Fund to sell Shares to the public on the terms set forth
in this Agreement and that Fund's prospectus and the Distributor hereby accepts
such appointment and agrees to act hereunder. Each Fund, during the term of this
Agreement, shall sell Shares to the Distributor upon the terms and conditions
set forth herein.

   (b) The Distributor agrees to purchase Shares, as principal for its own
account, from each Fund and to sell Shares as principal to investors, and
securities dealers, including Dean Witter Reynolds Inc. ("DWR"), an affiliate of
the Distributor, upon the terms described herein and in that Fund's prospectus
(the "Prospectus") and statement of additional information included in the
Fund's registration statement (the "Registration Statement") most recently filed
from time to time with the Securities and Exchange Commission (the "SEC") and
effective under the Securities Act of 1933, as amended (the "1933 Act"), and the
1940 Act or as the Prospectus may be otherwise amended or supplemented and filed
with the SEC pursuant to Rule 497 under the 1933 Act.

   SECTION 2 Exclusive Nature of Duties. The Distributor shall be the exclusive
principal underwriter and distributor of each Fund, except that the exclusive
rights granted to the Distributor to sell the Shares shall not apply to Shares
issued by each Fund: (i) in connection with the merger or consolidation of any
other investment company or personal holding company with the Fund or the
acquisition by purchase or otherwise of all (or substantially all) the assets or
the outstanding shares of any such company by the Fund; (ii) pursuant to
reinvestment of dividends or capital gains distributions; or (iii) pursuant to
the reinstatement privilege afforded redeeming shareholders.

   SECTION 3. Purchase of Shares from each Fund. The Shares are offered in four
classes (each, a "Class"), as described in the Prospectus, as amended or
supplemented from time to time.

   (a) The Distributor shall have the right to buy from each Fund the Shares of
the particular class needed, but not more than the Shares needed (except for
clerical errors in transmission), to fill unconditional orders for Shares of the
applicable class placed with the Distributor by investors or securities dealers.
The price which the Distributor shall pay for the Shares so purchased from the
Fund shall be the net asset value, determined as set forth in the Prospectus,
used in determining the public offering price on which such orders were based.

   (b) The Shares are to be resold by the Distributor at the public offering
price of Shares of the applicable class as set forth in the Prospectus, to
investors or to securities dealers, including DWR, who have entered into
selected dealer agreements with the Distributor upon the terms and conditions
set forth in Section 7 hereof ("Selected Dealers").

                                        1
<PAGE>
   (c) Each Fund shall have the right to suspend the sale of the Shares at times
when redemption is suspended pursuant to the conditions set forth in Section
4(f) hereof. Each Fund shall also have the right to suspend the sale of the
Shares if trading on the New York Stock Exchange shall have been suspended, if a
banking moratorium shall have been declared by federal or New York authorities,
or if there shall have been some other extraordinary event which, in the
judgment of a Fund, makes it impracticable to sell its Shares.

   (d) Each Fund, or any agent of a Fund designated in writing by the Fund,
shall be promptly advised of all purchase orders for Shares received by the
Distributor. Any order may be rejected by a Fund; provided, however, that a Fund
will not arbitrarily or without reasonable cause refuse to accept orders for the
purchase of Shares. The Distributor will confirm orders upon their receipt, and
each Fund (or its agent) upon receipt of payment therefor and instructions will
deliver share certificates for such Shares or a statement confirming the
issuance of Shares. Payment shall be made to the Fund in New York Clearing House
funds. The Distributor agrees to cause such payment and such instructions to be
delivered promptly to the Fund (or its agent).

   (e) With respect to Shares sold by any Selected Dealer, the Distributor is
authorized to direct each Fund's transfer agent to receive instructions directly
from the Selected Dealer on behalf of the Distributor as to registration of
Shares in the names of investors and to confirm issuance of the Shares to such
investors. The Distributor is also authorized to instruct the transfer agent to
receive payment directly from the Selected Dealer on behalf of the Distributor,
for prompt transmittal to each Fund's custodian, of the purchase price of the
Shares. In such event the Distributor shall obtain from the Selected Dealer and
maintain a record of such registration instructions and payments.

   SECTION 4. Repurchase or Redemption of Shares. 

   (a) Any of the outstanding Shares of a Fund may be tendered for redemption at
any time, and each Fund agrees to redeem its Shares so tendered in accordance
with the applicable provisions set forth in its Prospectus. The price to be paid
to redeem the Shares shall be equal to the net asset value determined as set
forth in the Prospectus less any applicable contingent deferred sales charge
("CDSC"). Upon any redemption of Shares the Fund shall pay the total amount of
the redemption price in New York Clearing House funds in accordance with
applicable provisions of the Prospectus.

   (b) The redemption by a Fund of any of its Class A Shares purchased by or
through the Distributor will not affect the applicable front-end sales charge
secured by the Distributor or any Selected Dealer in the course of the original
sale, except that if any Class A Shares are tendered for redemption within seven
business days after the date of the confirmation of the original purchase, the
right to the applicable front-end sales charge shall be forfeited by the
Distributor and the Selected Dealer which sold such Shares.

   (c) The proceeds of any redemption of Class A, Class B or Class C Shares
shall be paid by each Fund as follows: (i) any applicable CDSC shall be paid to
the Distributor or to the Selected Dealer, or, when applicable, pursuant to the
Rules of the Association of the National Association of Securities Dealers, Inc.
("NASD"), retained by the Fund and (ii) the balance shall be paid to the
redeeming shareholders, in each case in accordance with applicable provisions of
its Prospectus in New York Clearing House funds. The Distributor is authorized
to direct a Fund to pay directly to the Selected Dealer any CDSC payable by a
Fund to the Distributor in respect of Class A, Class B, or Class C Shares sold
by the Selected Dealer to the redeeming shareholders.

   (d) The Distributor is authorized, as agent for the Fund, to repurchase
Shares, represented by a share certificate which is delivered to any office of
the Distributor in accordance with applicable provisions set forth in each
Fund's Prospectus. The Distributor shall promptly transmit to the transfer agent
of the Fund for redemption all Shares so delivered. The Distributor shall be
responsible for the accuracy of instructions transmitted to the Fund's transfer
agent in connection with all such repurchases.

   (e) The Distributor is authorized, as agent for each Fund, to repurchase
Shares held in a shareholder's account with a Fund for which no share
certificate has been issued, upon the telephonic request of the shareholders, or
at the discretion of the Distributor. The Distributor shall promptly transmit to
the

                                        2
<PAGE>
transfer agent of the Fund, for redemption, all such orders for repurchase of
Shares. Payment for Shares repurchased may be made by a Fund to the Distributor
for the account of the shareholder. The Distributor shall be responsible for the
accuracy of instructions transmitted to the Fund's transfer agent in connection
with all such repurchases.

   (f) Redemption of its Shares or payment by a Fund may be suspended at times
when the New York Stock Exchange is closed, when trading on said Exchange is
restricted, when an emergency exists as a result of which disposal by a Fund of
securities owned by it is not reasonably practicable or it is not reasonably
practicable for a Fund fairly to determine the value of its net assets, or
during any other period when the SEC, by order, so permits.

   (g) With respect to its Shares tendered for redemption or repurchase by any
Selected Dealer on behalf of its customers, the Distributor is authorized to
instruct the transfer agent of a Fund to accept orders for redemption or
repurchase directly from the Selected Dealer on behalf of the Distributor and to
instruct the Fund to transmit payments for such redemptions and repurchases
directly to the Selected Dealer on behalf of the Distributor for the account of
the shareholder. The Distributor shall obtain from the Selected Dealer, and
shall maintain, a record of such orders. The Distributor is further authorized
to obtain from the Fund, and shall maintain, a record of payment made directly
to the Selected Dealer on behalf of the Distributor.

   SECTION 5. Duties of the Fund. 

   (a) Each Fund shall furnish to the Distributor copies of all information,
financial statements and other papers which the Distributor may reasonably
request for use in connection with the distribution of its Shares, including one
certified copy, upon request by the Distributor, of all financial statements
prepared by the Fund and examined by independent accountants. Each Fund shall,
at the expense of the Distributor, make available to the Distributor such number
of copies of its Prospectus as the Distributor shall reasonably request.

   (b) Each Fund shall take, from time to time, but subject to the necessary
approval of its shareholders, all necessary action to fix the number of its
authorized Shares and to register Shares under the 1933 Act, to the end that
there will be available for sale such number of Shares as investors may
reasonably be expected to purchase.

   (c) Each Fund shall use its best efforts to pay the filing fees for an
appropriate number of its Shares to be sold under the securities laws of such
states as the Distributor and the Fund may approve. Any qualification to sell
its Shares in a state may be withheld, terminated or withdrawn by a Fund at any
time in its discretion. As provided in Section 8(c) hereof, such filing fees
shall be paid by the Fund. The Distributor shall furnish any information and
other material relating to its affairs and activities as may be required by a
Fund in connection with the sale of its Shares in any state.

   (d) Each Fund shall, at the expense of the Distributor, furnish, in
reasonable quantities upon request by the Distributor, copies of its annual and
interim reports.

   SECTION 6. Duties of the Distributor. 

   (a) The Distributor shall sell shares of each Fund through DWR and may sell
shares through other securities dealers and its own Account Executives, and
shall devote reasonable time and effort to promote sales of the Shares, but
shall not be obligated to sell any specific number of Shares. The services of
the Distributor hereunder are not exclusive and it is understood that the
Distributor may act as principal underwriter for other registered investment
companies, so long as the performance of its obligations hereunder is not
impaired thereby. It is also understood that Selected Dealers, including DWR,
may also sell shares for other registered investment companies.

   (b) Neither the Distributor nor any Selected Dealer shall give any
information or make any representations, other than those contained in the
Registration Statement or related Prospectus and any sales literature
specifically approved by the appropriate Fund.

   (c) The Distributor agrees that it will at all times comply with the
applicable terms and limitations of the Rules of the Association of the NASD.

                                        3
<PAGE>
   SECTION 7. Selected Dealers Agreements. 

   (a) The Distributor shall have the right to enter into selected dealer
agreements with Selected Dealers for the sale of Shares. In making agreements
with Selected Dealers, the Distributor shall act only as principal and not as
agent for a Fund. Shares sold to Selected Dealers shall be for resale by such
dealers only at the public offering price set forth in the Prospectus. With
respect to Class A Shares, in such agreement the Distributor shall have the
right to fix the portion of the applicable front-end sales charge which may be
allocated to the Selected Dealers.

   (b) Within the United States, the Distributor shall offer and sell Shares
only to Selected Dealers that are members in good standing of the NASD.

   (c) The Distributor shall adopt and follow procedures, as approved by each
Fund, for the confirmation of sales of its Shares to investors and Selected
Dealers, the collection of amounts payable by investors and Selected Dealers on
such sales, and the cancellation of unsettled transactions, as may be necessary
to comply with the requirements of the NASD, as such requirements may from time
to time exist.

   SECTION 8. Payment of Expenses. 

   (a) Each Fund shall bear all costs and expenses of the Fund, including fees
and disbursements of legal counsel including counsel to the Directors/Trustees
of each Fund who are not interested persons (as defined in the 1940 Act) of the
Fund or the Distributor, and independent accountants, in connection with the
preparation and filing of any required Registration Statements and Prospectuses
and all amendments and supplements thereto, and the expense of preparing,
printing, mailing and otherwise distributing prospectuses and statements of
additional information, annual or interim reports or proxy materials to
shareholders.

   (b) The Distributor shall bear all expenses incurred by it in connection with
its duties and activities under this Agreement including the payment to Selected
Dealers of any sales commissions, service fees and other expenses for sales of a
Fund's Shares (except such expenses as are specifically undertaken herein by a
Fund) incurred or paid by Selected Dealers, including DWR. The Distributor shall
bear the costs and expenses of preparing, printing and distributing any
supplementary sales literature used by the Distributor or furnished by it for
use by Selected Dealers in connection with the offering of the Shares for sale.
Any expenses of advertising incurred in connection with such offering will also
be the obligation of the Distributor. It is understood and agreed that, so long
as a Fund's Plan of Distribution pursuant to Rule 12b-1 under the 1940 Act
("Rule 12b-1 Plan") continues in effect, any expenses incurred by the
Distributor hereunder may be paid in accordance with the terms of such Rule
12b-1 Plan.

   (c) Each Fund shall pay the filing fees, and, if necessary or advisable in
connection therewith, bear the cost and expense of qualifying each Fund as a
broker or dealer, in such states of the United States or other jurisdictions as
shall be selected by the Fund and the Distributor pursuant to Section 5(c)
hereof and the cost and expenses payable to each such state for continuing to
offer Shares therein until the Fund decides to discontinue selling Shares
pursuant to Section 5(c) hereof.

   SECTION 9. Indemnification. 

   (a) Each Fund shall indemnify and hold harmless the Distributor and each
person, if any, who controls the Distributor against any loss, liability, claim,
damage or expense (including the reasonable cost of investigating or defending
any alleged loss, liability, claim, damage or expense and reasonable counsel
fees incurred in connection therewith) arising by reason of any person acquiring
any Shares, which may be based upon the 1933 Act, or on any other statute or at
common law, on the ground that the Registration Statement or related Prospectus
and Statement of Additional Information, as from time to time amended and
supplemented, or the annual or interim reports to shareholders of a Fund,
includes an untrue statement of a material fact or omits to state a material
fact required to be stated therein or necessary in order to make the statements
therein not misleading, unless such statement or omission was made in reliance
upon, and in conformity with, information furnished to the Fund in connection
therewith by or on behalf of the Distributor; provided, however, that in no case
(i) is the indemnity of a Fund in

                                        4
<PAGE>
favor of the Distributor and any such controlling persons to be deemed to
protect the Distributor or any such controlling persons thereof against any
liability to a Fund or its security holders to which the Distributor or any such
controlling persons would otherwise be subject by reason of willful misfeasance,
bad faith or gross negligence in the performance of its duties or by reason of
reckless disregard of its obligations and duties under this Agreement; or (ii)
is a Fund to be liable under its indemnity agreement contained in this paragraph
with respect to any claim made against the Distributor or any such controlling
persons, unless the Distributor or any such controlling persons, as the case may
be, shall have notified the Fund in writing within a reasonable time after the
summons or other first legal process giving information of the nature of the
claim shall have been served upon the Distributor or such controlling persons
(or after the Distributor or such controlling persons shall have received notice
of such service on any designated agent), but failure to notify the Fund of any
such claim shall not relieve it from any liability which it may have to the
person against whom such action is brought otherwise than on account of its
indemnity agreement contained in this paragraph. Each Fund will be entitled to
participate at its own expense in the defense, or, if it so elects, to assume
the defense, of any such suit brought to enforce any such liability, but if a
Fund elects to assume the defense, such defense shall be conducted by counsel
chosen by it and satisfactory to the Distributor or such controlling person or
persons, defendant or defendants in the suit. In the event the Fund elects to
assume the defense of any such suit and retain such counsel, the Distributor or
such controlling person or persons, defendant or defendants in the suit, shall
bear the fees and expenses of any additional counsel retained by them, but, in
case the Fund does not elect to assume the defense of any such suit, it will
reimburse the Distributor or such controlling person or persons, defendant or
defendants in the suit, for the reasonable fees and expenses of any counsel
retained by them. Each Fund shall promptly notify the Distributor of the
commencement of any litigation or proceedings against it or any of its officers
or Directors/Trustees in connection with the issuance or sale of the Shares.

   (b)   (i) The Distributor shall indemnify and hold harmless each Fund and 
each of its Directors/ Trustees and officers and each person, if any, who 
controls the Fund against any loss, liability, claim, damage, or expense 
described in the indemnity contained in subsection (a) of this Section, but 
only with respect to statements or omissions made in reliance upon, and in 
conformity with, information furnished to a Fund in writing by or on behalf 
of the Distributor for use in connection with the Registration Statement or 
related Prospectus and Statement of Additional Information, as from time to 
time amended, or the annual or interim reports to shareholders. 

        (ii) The Distributor shall indemnify and hold harmless each Fund and
each Fund's transfer agent, individually and in its capacity as the Fund's
transfer agent, from and against any claims, damages and liabilities which arise
as a result of actions taken pursuant to instructions from, or on behalf of, the
Distributor to: (1) redeem all or a part of shareholder accounts in the Fund
pursuant to Section 4(g) hereof and pay the proceeds to, or as directed by, the
Distributor for the account of each shareholder whose Shares are so redeemed;
and (2) register Shares in the names of investors, confirm the issuance thereof
and receive payment therefor pursuant to Section 3(e) hereof.

        (iii) In case any action shall be brought against a Fund or any person
so indemnified by this Section 9(b) in respect of which indemnity may be sought
against the Distributor, the Distributor shall have the rights and duties given
to a Fund, and the Fund and each person so indemnified shall have the rights and
duties given to the Distributor, by the provisions of subsection (a) of this
Section 9.

   (c) If the indemnification provided for in this Section 9 is unavailable or
insufficient to hold harmless an indemnified party under subsection (a) or (b)
above in respect of any losses, claims, damages, liabilities or expenses (or
actions in respect thereof) referred to herein, then each indemnifiying party
shall contribute to the amount paid or payable by such indemnified party as a
result of such losses, claims, damages, liabilities or expenses (or actions in
respect thereof) in such proportion as is appropriate to reflect the relative
benefits received by a Fund on the one hand and the Distributor on the other
from the offering of the Shares. If, however, the allocation provided by the
immediately preceding sentence is not permitted by applicable law, then each
indemnifying party shall contribute to such amount paid or payable by such
indemnified party in such proportion as is appropriate to reflect not only such
relative benefits but also the relative fault of a Fund on the one hand and the
Distributor on the other in connection with the statements or omissions which
resulted in such losses, claims, damages, liabilities or expenses (or actions

                                        5
<PAGE>
in respect thereof), as well as any other relevant equitable considerations. The
relative benefits received by a Fund on the one hand and the Distributor on the
other shall be deemed to be in the same proportion as the total net proceeds
from the offering (before deducting expenses) received by the Fund bear to the
total compensation received by the Distributor, in each case as set forth in the
Prospectus. The relative fault shall be determined by reference to, among other
things, whether the untrue or alleged untrue statement of a material fact or the
omission or alleged omission to state a material fact relates to information
supplied by a Fund or the Distributor and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. Each Fund and the Distributor agree that it would not be
just and equitable if contribution were determined by pro rata allocation or by
any other method of allocation which does not take into account the equitable
considerations referred to above. The amount paid or payable by an indemnified
party as a result of the losses, claims, damages, liabilities or expenses (or
actions in respect thereof) referred to above shall be deemed to include any
legal or other expenses reasonably incurred by such indemnified party in
connection with investigating or defending any such claim. Notwithstanding the
provisions of this subsection (c), the Distributor shall not be required to
contribute any amount in excess of the amount by which the total price at which
the Shares distributed by it to the public were offered to the public exceeds
the amount of any damages which it has otherwise been required to pay by reason
of such untrue or alleged untrue statement or omission or alleged omission. No
person guilty of fraudulent misrepresentation (within the meaning of Section
11(f) of the 1933 Act) shall be entitled to contribution from any person who was
not guilty of such fraudulent misrepresentation.

   SECTION 10. Duration and Termination of this Agreement. This Agreement shall
become effective with respect to a Fund as of the date first above written and
shall remain in force until April 30, 1998, and thereafter, but only so long as
such continuance is specifically approved at least annually by (i) the Board of
Directors/Trustees of each Fund, or by the vote of a majority of the outstanding
voting securities of the Fund, cast in person or by proxy, and (ii) a majority
of those Directors/Trustees who are not parties to this Agreement or interested
persons of any such party and who have no direct or indirect financial interest
in this Agreement or in the operation of the Fund's Rule 12b-1 Plan or in any
agreement related thereto, cast in person at a meeting called for the purpose of
voting upon such approval.

   This Agreement may be terminated at any time without the payment of any
penalty, by the Directors/Trustees of a Fund, by a majority of the
Directors/Trustees of a Fund who are not interested persons of the Fund and who
have no direct or indirect financial interest in this Agreement, or by vote of a
majority of the outstanding voting securities of a Fund, or by the Distributor,
on sixty days' written notice to the other party. This Agreement shall
automatically terminate in the event of its assignment.

   The terms "vote of a majority of the outstanding voting securities,"
"assignment" and "interested person," when used in this Agreement, shall have
the respective meanings specified in the 1940 Act.

   SECTION 11. Amendments of this Agreement. This Agreement may be amended by
the parties only if such amendment is specifically approved by (i) the
Directors/Trustees of a Fund, or by the vote of a majority of outstanding voting
securities of a Fund, and (ii) a majority of those Directors/Trustees of a Fund
who are not parties to this Agreement or interested persons of any such party
and who have no direct or indirect financial interest in this Agreement or in
any Agreement related to the Fund's Rule 12b-1 Plan, cast in person at a meeting
called for the purpose of voting on such approval.

   SECTION 12. Additional Funds. If at any time another Fund desires to appoint
the Distributor as its principal underwriter and distributor under this
Agreement, it shall notify the Distributor in writing. If the Distributor is
willing to serve as the Fund's principal underwriter and distributor under this
Agreement, it shall notify the Fund in writing, whereupon such other Fund shall
become a Fund hereunder.

   SECTION 13. Governing Law. This Agreement shall be construed in accordance
with the law of the State of New York and the applicable provisions of the 1940
Act. To the extent the applicable law of the State of New York, or any of the
provisions herein, conflicts with the applicable provisions of the 1940 Act, the
latter shall control.

                                        6
<PAGE>
   SECTION 14. Personal Liability. With respect to any Fund that is organized as
an unincorporated business trust under the laws of the Commonwealth of
Massachusetts, its Declaration of the Trust (each, a "Declaration") is on file
in the office of the Secretary of the Commonwealth of Massachusetts. Each
Declaration provides that the name of the Fund 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 any Fund shall be held to
any personal liability, nor shall resort be had to their private property for
the satisfaction of any obligation or claim or otherwise, in connection with the
affairs of any Fund, but the Trust Estate only shall be liable.

   IN WITNESS WHEREOF, the parties hereto have executed and delivered this
Agreement as of the day and year first written in New York, New York.

                                      ON BEHALF OF THE FUNDS SET FORTH ON 
                                      SCHEDULE A, ATTACHED HERETO 

                                      By: .................................... 


                                      DEAN WITTER DISTRIBUTORS INC. 

                                      By: .................................... 

                                       7
<PAGE>
                              DEAN WITTER FUNDS 
                            DISTRIBUTION AGREEMENT 

                                  SCHEDULE A 
                               AT JULY 28, 1997 

<TABLE>
<CAPTION>
<S>      <C>
1)       Dean Witter American Value Fund
2)       Dean Witter Balanced Growth Fund
3)       Dean Witter Balanced Income Fund
4)       Dean Witter California Tax-Free Income Fund
5)       Dean Witter Capital Appreciation Fund
6)       Dean Witter Capital Growth Securities
7)       Dean Witter Convertible Securities Trust
8)       Dean Witter Developing Growth Securities Trust
9)       Dean Witter Diversified Income Trust
10)      Dean Witter Dividend Growth Securities Inc.
11)      Dean Witter European Growth Fund Inc.
12)      Dean Witter Federal Securities Trust
13)      Dean Witter Financial Services Trust
14)      Dean Witter Global Asset Allocation Fund
15)      Dean Witter Global Dividend Growth Securities
16)      Dean Witter Global Utilities Fund
17)      Dean Witter Health Sciences Trust
18)      Dean Witter High Yield Securities Inc.
19)      Dean Witter Income Builder Fund
20)      Dean Witter Information Fund
21)      Dean Witter Intermediate Income Securities
22)      Dean Witter International SmallCap Fund
23)      Dean Witter Japan Fund
24)      Dean Witter Managers' Select Fund
25)      Dean Witter Market Leader Trust
26)      Dean Witter Mid-Cap Growth Fund
27)      Dean Witter Natural Resource Development Securities Inc.
28)      Dean Witter New York Tax-Free Income Fund
29)      Dean Witter Pacific Growth Fund Inc.
30)      Dean Witter Precious Metals and Minerals Trust
31)      Dean Witter Special Value Fund
32)      Dean Witter Strategist Fund
33)      Dean Witter Tax-Exempt Securities Trust
34)      Dean Witter U.S. Government Securities Trust
35)      Dean Witter Utilities Fund
36)      Dean Witter Value-Added Market Series/Equity Portfolio
37)      Dean Witter World Wide Income Trust
38)      Dean Witter World Wide Investment Trust
</TABLE>

                                        8


<PAGE>

CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the use in the Statement of Additional Information
constituting part of this Post-Effective Amendment No. 6 to the registration
statement on Form N-1A (the "Registration Statement") of our report dated
September 13, 1996, relating to the financial statements and financial 
highlights of Dean Witter Health Sciences Trust, which appears in such 
Statement of Additional Information, and to the incorporation by reference of 
our report into the Prospectus which constitutes part of this Registration 
Statement. We also consent to the references to us under the headings 
"Independent Accountants" and "Experts" in such Statement of Additional 
Information and to the reference to us under the heading "Financial Highlights" 
in such Prospectus.

PRICE WATERHOUSE LLP
1177 Avenue of the Americas
New York, New York 10036
July 14, 1997


<PAGE>
                                                                 Exhibit 15

       AMENDED AND RESTATED PLAN OF DISTRIBUTION PURSUANT TO RULE 12b-1 
                                      OF 
                      DEAN WITTER HEALTH SCIENCES TRUST 

   WHEREAS, Dean Witter Health Sciences Trust (the "Fund") is engaged in
business as an open-end management investment company and is registered as such
under the Investment Company Act of 1940, as amended (the "Act"); and

   WHEREAS, on October 26, 1995, the Fund most recently amended and restated a
Plan of Distribution pursuant to Rule 12b-1 under the Act which had initially
been adopted on September 2, 1992, and the Trustees then determined that there
was a reasonable likelihood that adoption of the Plan of Distribution, as then
amended and restated, would benefit the Fund and its shareholders; and

   WHEREAS, the Trustees believe that continuation of said Plan of Distribution,
as amended and restated herein, is reasonably likely to continue to benefit the
Fund and its shareholders; and

   WHEREAS, on September 2, 1992, the Fund and Dean Witter Reynolds Inc. ("DWR")
entered into a Distribution Agreement pursuant to which the Fund employed DWR as
distributor of the Fund's shares; and

   WHEREAS, on January 4, 1993, the Fund and DWR substituted Dean Witter
Distributors Inc. (the "Distributor") in the place of DWR as distributor of the
Fund's shares; and

   WHEREAS, the Fund, DWR and the Distributor intend that DWR will continue to
promote the sale of Fund shares and provide personal services to Fund
shareholders with respect to their holdings of Fund shares; and

   WHEREAS, the Fund and the Distributor entered into a separate Distribution
Agreement dated as of July 28, 1997 (which superseded a Distribution Agreement
dated May 31, 1997, which Agreement in turn superseded an Agreement dated June
30, 1993), pursuant to which the Fund has employed the Distributor in such
capacity during the continuous offering of shares of the Fund.

   NOW, THEREFORE, the Fund hereby amends the Plan of Distribution previously
adopted and amended and restated, and the Distributor hereby agrees to the terms
of said Plan of Distribution (the "Plan"), as amended herein, in accordance with
Rule 12b-1 under the Act on the following terms and conditions with respect to
the Class A, Class B and Class C shares of the Fund:

   1(a)(i). With respect to Class A and Class C shares of the Fund, the
Distributor hereby undertakes to directly bear all costs of rendering the
services to be performed by it under this Plan and under the Distribution
Agreement, except for those specific expenses that the Trustees determine to
reimburse as hereinafter set forth.

   1(a)(ii). The Fund is hereby authorized to reimburse the Distributor, DWR,
its affiliates and other broker-dealers for distribution expenses incurred by
them specifically on behalf of Class A and Class C shares of the Fund.
Reimbursement will be made through payments at the end of each month. The amount
of each monthly payment may in no event exceed an amount equal to a payment at
the annual rate of 0.25%, in the case of Class A, and 1.0%, in the case of Class
C, of the average net assets of the respective Class during the month. With
respect to Class A, in the case of all expenses other than expenses representing
the service fee and, with respect to Class C, in the case of all expenses other
than expenses representing a gross sales credit or a residual to account
executives, such amounts shall be determined at the beginning of each calendar
quarter by the Trustees, including a majority of the Trustees who are not
"interested persons" of the Fund, as defined in the Act. Expenses representing
the service fee (for Class A) or a gross sales credit or a residual to account
executives (for Class C) may be reimbursed without prior determination. In the
event that the Distributor proposes that monies shall be reimbursed for other
than such expenses, then in making the quarterly determinations of the amounts
that may be expended by the Fund, the Distributor shall provide, and the
Trustees shall review, a quarterly budget of projected distribution expenses to
be incurred by the Distributor, DWR, its affiliates or other broker-dealers on
behalf of the Fund together with a report explaining the purposes and
anticipated benefits of incurring

<PAGE>
such expenses. The Trustees shall determine the particular expenses, and the
portion thereof that may be borne by the Fund, and in making such determination
shall consider the scope of the Distributor's commitment to promoting the
distribution of the Fund's Class A and Class C shares directly or through DWR,
its affiliates or other broker-dealers.

   1(a)(iii). If, as of the end of any calendar year, the actual expenses
incurred by the Distributor, DWR, its affiliates and other broker-dealers on
behalf of Class A or Class C shares of the Fund (including accrued expenses and
amounts reserved for incentive compensation and bonuses) are less than the
amount of payments made by such Class pursuant to this Plan, the Distributor
shall promptly make appropriate reimbursement to the appropriate Class. If,
however, as of the end of any calendar year, the actual expenses (other than
expenses representing a gross sales credit) of the Distributor, DWR, its
affiliates and other broker-dealers are greater than the amount of payments made
by Class A or Class C shares of the Fund pursuant to this Plan, such Class will
not reimburse the Distributor, DWR, its affiliates or other broker-dealers for
such expenses through payments accrued pursuant to this Plan in the subsequent
fiscal year. Expenses representing a gross sales credit may be reimbursed in the
subsequent calendar year.

   1(b). With respect to Class B shares of the Fund, the Fund shall pay to the
Distributor, as the distributor of securities of which the Fund is the issuer,
compensation for distribution of its Class B shares at the rate of the lesser of
(i) 1.0% per annum of the average daily aggregate sales of the Fund's Class B
shares since the Fund's inception (not including reinvestment of dividends and
capital gains distributions from the Fund) less the average daily aggregate net
asset value of the Fund's Class B shares redeemed since the Fund's inception
upon which a contingent deferred sales charge has been imposed or upon which
such charge has been waived, or (ii) 1.0% per annum of the average daily net
assets of Class B. Such compensation shall be calculated and accrued daily and
paid monthly or at such other intervals as the Trustees shall determine.

   The Distributor may direct that all or any part of the amounts receivable by
it under this Plan be paid directly to DWR, its affiliates or other
broker-dealers who provide distribution and shareholder services. All payments
made hereunder pursuant to the Plan shall be in accordance with the terms and
limitations of the Rules of the Association of the National Association of
Securities Dealers, Inc.

   2. With respect to expenses incurred by each Class, the amount set forth in
paragraph 1 of this Plan shall be paid for services of the Distributor, DWR its
affiliates and other broker-dealers it may select in connection with the
distribution of the Fund's shares, including personal services to shareholders
with respect to their holdings of Fund shares, and may be spend by the
Distributor, DWR, its affiliates and such broker-dealers on any activities or
expenses related to the distribution of the Fund's shares or services to
shareholders, including, but not limited to: compensation to, and expenses of,
account executives or other employees of the Distributor, DWR, its affiliates or
other broker-dealers; overhead and other branch office distribution-related
expenses and telephone expenses of persons who engage in or support distribution
of shares or who provide personal services to shareholders; printing of
prospectuses and reports for other than existing shareholders; preparation,
printing and distribution of sales literature and advertising materials and,
with respect to Class B, opportunity costs in incurring the foregoing expenses
(which may be calculated as a carrying charge on the excess of the distribution
expenses incurred by the Distributor, DWR, its affiliates or other
broker-dealers over distribution revenues received by them, such excess being
hereinafter referred to as "carryover expenses"). The overhead and other branch
office distribution-related expenses referred to in this paragraph 2 may
include: (a) the expenses operating the branch offices of the Distributor or
other broker-dealers, including DWR, in connection with the sale of the Fund
shares, including lease costs, the salaries and employee benefits of operations
and sales support personnel, utility costs, communications costs and the costs
of stationery and supplies; (b) the costs of client sales seminars; (c) travel
expenses of mutual fund sales coordinators to promote the sale of Fund shares;
and (d) other expenses relating to branch promotion of Fund sales. Payments may
also be made with respect to distribution expenses incurred in connection with
the distribution of shares, including personal services to shareholders with
respect to holdings of such shares, of an investment company whose assets are
acquired by the Fund in a tax-free reorganization, provided that, with respect
to Class B, carryover expenses as a percentage of Fund assets will not be
materially increased thereby. It is

                                        2
<PAGE>
contemplated that, with respect to Class A shares, the entire fee set forth in
paragraph 1(a) will be characterized as a service fee within the meaning of the
National Association of Securities Dealers, Inc. guidelines and that, with
respect to Class B and Class C shares, payments at the annual rate of 0.25% will
be so characterized.

   3. This Plan, as amended and restated, shall not take effect with respect to
any particular Class until it has been approved, together with any related
agreements, by votes of a majority of the Board of Trustees of the Fund and of
the Trustees who are not "interested persons" of the Fund (as defined in the
Act) and have no direct financial interest in the operation of this Plan or any
agreements related to it (the "Rule 12b-1 Trustees"), cast in person at a
meeting (or meetings) called for the purpose of voting on this Plan and such
related agreements.

   4. This Plan shall continue in effect with respect to each Class until April
30, 1998, and from year to year thereafter, provided such continuance is
specifically approved at least annually in the manner provided for approval of
this Plan in paragraph 3 hereof.

   5. The Distributor shall provide to the Trustees of the Fund and the Trustees
shall review, at least quarterly, a written report of the amounts so expended
and the purposes for which such expenditures were made. In this regard, the
Trustees shall request the Distributor to specify such items of expenses as the
Trustees deem appropriate. The Trustees shall consider such items as they deem
relevant in making the determinations required by paragraph 4 hereof.

   6. This Plan may be terminated at any time with respect to a Class by vote of
a majority of the Rule 12b-1 Trustees, or by vote of a majority of the
outstanding voting securities of the Fund. The Plan may remain in effect with
the respect to a particular Class even if the Plan has been terminated in
accordance with this paragraph 6 with respect to any other Class. In the event
of any such termination or in the event of nonrenewal, the Fund shall have no
obligation to pay expenses which have been incurred by the Distributor, DWR, its
affiliates or other broker-dealers in excess of payments made by the Fund
pursuant to this Plan. However, with respect to Class B, this shall not preclude
consideration by the Trustees of the manner in which such excess expenses shall
be treated.

   7. This Plan may not be amended with respect to any Class to increase
materially the amount each Class may spend for distribution provided in
paragraph 1 hereof unless such amendment is approved by a vote of at least a
majority (as defined in the Act) of the outstanding voting securities of that
Class, and no material amendment to the Plan shall be made unless approved in
the manner provided for approval in paragraph 3 hereof. Class B shares will have
the right to vote on any material increase in the fee set forth in paragraph
1(a) above affecting Class A shares.

   8. While this Plan is in effect, the selection and nomination of Trustees who
are not interested persons (as defined in the Act) of the Fund shall be
committed to the discretion of the Trustees who are not interested persons.

   9. The Fund shall preserve copies of this Plan and any related agreements and
all reports made pursuant to paragraph 5 hereof, for a period of not less than
six years from the date of this Plan, any such agreement or any such report, as
the case may be, the first two years in an easily accessible place.

   10. The Declaration of Trust establishing Dean Witter Health Sciences Trust,
dated May 26, 1992, 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 Dean Witter Health Sciences 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 Dean Witter Health Sciences Trust shall be held to any personal
liability, nor shall resort be had to their private property for this
satisfaction of any obligation or claim or otherwise, in connection with the
affairs of said Dean Witter Health Sciences Trust, but the Trust Estate only
shall be liable.

                                        3
<PAGE>
   IN WITNESS WHEREOF, the Fund, the Distributor and DWR have executed this
amended and restated Plan of Distribution as of the day and year set forth below
in New York, New York.

Date: September 2, 1992 
      As Amended on January 4, 1993, 
      April 28, 1993, October 26, 1995 
      and July 28, 1997 

Attest:                                 DEAN WITTER HEALTH SCIENCES TRUST 


 ..................................      By: ................................. 


Attest:                                 DEAN WITTER DISTRIBUTORS INC. 


 ..................................      By: ................................. 


Attest:                                 DEAN WITTER REYNOLDS INC. 


 ..................................      By: ................................. 







                                        4


<PAGE>
                                                                      OTHER

                                 DEAN WITTER 
                                    FUNDS 
                             MULTIPLE CLASS PLAN 
                            PURSUANT TO RULE 18f-3 

  INTRODUCTION 

   This plan (the "Plan") is adopted pursuant to Rule 18f-3(d) of the Investment
Company Act of 1940, as amended (the "1940 Act"), and will be effective as of
July 28, 1997. The Plan relates to shares of the open-end investment companies
to which Dean Witter InterCapital Inc. acts as investment manager, that are
listed on Schedule A, as may be amended from time to time (each, a "Fund" and
collectively, the "Funds"). The Funds are distributed pursuant to a system (the
"Multiple Class System") in which each class of shares (each, a "Class" and
collectively, the "Classes") of a Fund represents a pro rata interest in the
same portfolio of investments of the Fund and differs only to the extent
outlined below.

I. DISTRIBUTION ARRANGEMENTS 

   One or more Classes of shares of the Funds are offered for purchase by
investors with the sales load structures described below. In addition, pursuant
to Rule 12b-1 under the 1940 Act, the Funds have each adopted a Plan of
Distribution (the "12b-1 Plan") under which shares of certain Classes are
subject to the service and/or distribution fees ("12b-1 fees") described below.

   1. Class A Shares 

   Class A shares are offered with a front-end sales load ("FESL"). The schedule
of sales charges applicable to a Fund and the circumstances under which the
sales charges are subject to reduction are set forth in each Fund's current
prospectus. As stated in each Fund's current prospectus, Class A shares may be
purchased at net asset value (without a FESL): (i) in the case of certain large
purchases of such shares; and (ii) by certain limited categories of investors,
in each case, under the circumstances and conditions set forth in each Fund's
current prospectus. Class A shares purchased at net asset value may be subject
to a contingent deferred sales charge ("CDSC") on redemptions made within one
year of purchase. Further information relating to the CDSC, including the manner
in which it is calculated, is set forth in paragraph 6 below. Class A shares are
also subject to payments under each Fund's 12b-1 Plan to reimburse Dean Witter
Distributors Inc., Dean Witter Reynolds Inc. ("DWR"), its affiliates and other
broker-dealers for distribution expenses incurred by them specifically on behalf
of the Class, assessed at an annual rate of up to 0.25% of average daily net
assets. The entire amount of the 12b-1 fee represents a service fee within the
meaning of National Association of Securities Dealers, Inc. ("NASD") guidelines.

   2. Class B Shares 

   Class B shares are offered without a FESL, but will in most cases be subject
to a six-year declining CDSC which is calculated in the manner set forth in
paragraph 6 below. Class B shares purchased by certain qualified
employer-sponsored benefit plans are subject to a three-year declining CDSC
which is calculated in the manner set forth in paragraph 6 below. The schedule
of CDSC charges applicable to each Fund is set forth in each Fund's current
prospectus. With the exception of certain of the Funds which have a different
formula described below (Dean Witter American Value Fund, Dean Witter Natural
Resource Development Securities Inc., Dean Witter Strategist Fund and Dean
Witter Dividend Growth Securities

                                        1
<PAGE>
Inc.)(1), Class B shares are also subject to a fee under each Fund's respective
12b-1 Plan, assessed at the annual rate of up to 1.0% of either: (a) the lesser
of (i) the average daily aggregate gross sales of the Fund's Class B shares
since the inception of the Fund (not including reinvestment of dividends or
capital gains distributions), less the average daily aggregate net asset value
of the Fund's Class B shares redeemed since the Fund's inception upon which a
CDSC has been imposed or waived, or (ii) the average daily net assets of Class
B; or (b) the average daily net assets of Class B. A portion of the 12b-1 fee
equal to up to 0.25% of the Fund's average daily net assets is characterized as
a service fee within the meaning of the NASD guidelines and the remaining
portion of the 12b-1 fee, if any, is characterized as an asset-based sales
charge. Also, Class B shares have a conversion feature ("Conversion Feature")
under which such shares convert to Class A shares after a certain holding
period. Details of the Conversion Feature are set forth in Section IV below.

   3. Class C Shares 

   Class C shares are offered without imposition of a FESL, but will in most
cases be subject to a CDSC of 1.0% on redemptions made within one year after
purchase. Further information relating to the CDSC is set forth in paragraph 6
below. In addition, Class C shares, under each Fund's 12b-1 Plan, are subject to
12b-1 payments to reimburse Dean Witter Distributors Inc., DWR, its affiliates
and other broker-dealers for distribution expenses incurred by them specifically
on behalf of the Class, assessed at the annual rate of up to 1.0% of the average
daily net assets of the Class. A portion of the 12b-1 fee equal to up to 0.25%
of the Fund's average daily net assets is characterized as a service fee within
the meaning of NASD guidelines. Unlike Class B shares, Class C shares do not
have the Conversion Feature.

   4. Class D Shares 

   Class D shares are offered without imposition of a FESL, CDSC or a 12b-1 fee
for purchases of Fund shares by (i) investors meeting an initial minimum
investment requirement and (ii) certain other limited categories of investors,
in each case, as may be approved by the Boards of Directors/Trustees of the
Funds and as disclosed in each Fund's current prospectus.

   5. Additional Classes of Shares 

   The Boards of Directors/Trustees of the Funds have the authority to create
additional Classes, or change existing Classes, from time to time, in accordance
with Rule 18f-3 under the 1940 Act.

   6. Calculation of the CDSC 

   Any applicable CDSC is calculated based upon the lesser of net asset value of
the shares at the time of purchase or at the time of redemption. The CDSC does
not apply to amounts representing an increase in share value due to capital
appreciation and shares acquired through the reinvestment of dividends or

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

(1)The payments under the 12b-1 Plan for each of Dean Witter American Value
Fund, Dean Witter Natural Resource Development Securities Inc. and Dean Witter
Dividend Growth Securities Inc. are assessed at the annual rate of 1.0% of the
lesser of: (a) the average daily aggregate gross sales of the Fund's Class B
shares since the inception of the Fund's Plan (not including reinvestment of
dividends or capital gains distributions), less the average daily aggregate net
asset value of the Fund's Class B shares redeemed since the Plan's inception
upon which a contingent deferred sales charge has been imposed or waived, or (b)
the average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since inception of the Plan. The payments under the
12b-1 Plan for the Dean Witter Strategist Fund are assessed at the annual rate
of: (i) 1% of the lesser of (a) the average daily aggregate gross sales of the
Fund's Class B shares since the effectiveness of the first amendment of the Plan
on November 8, 1989 (not including reinvestment of dividends or capital gains
distributions), less the average daily aggregate net asset value of the Fund's
Class B shares redeemed since the effectiveness of the first amended Plan, upon
which a contingent deferred sales charge has been imposed or waived, or (b) the
average daily net assets of Class B attributable to shares issued, net of
related shares redeemed, since the effectiveness of the first amended Plan; plus
(ii) 0.25% of the average daily net assets of Class B attributable to shares
issued, net of related shares redeemed, prior to effectiveness of the first
amended Plan. 

                                       2
<PAGE>
capital gains distributions. The CDSC schedule applicable to a Fund and the
circumstances in which the CDSC is subject to waiver are set forth in each
Fund's prospectus.

II. EXPENSE ALLOCATIONS 

   Expenses incurred by a Fund are allocated among the various Classes of shares
pro rata based on the net assets of the Fund attributable to each Class, except
that 12b-1 fees relating to a particular Class are allocated directly to that
Class. In addition, other expenses associated with a particular Class (except
advisory or custodial fees), may be allocated directly to that Class, provided
that such expenses are reasonably identified as specifically attributable to
that Class and the direct allocation to that Class is approved by the Fund's
Board of Directors/Trustees.

III. CLASS DESIGNATION 

   All shares of the Funds held prior to July 28, 1997 (other than the shares
held by certain employee benefit plans established by DWR and its affiliate, SPS
Transaction Services, Inc., shares of Funds offered with a FESL, and shares of
Dean Witter Balanced Growth Fund and Dean Witter Balanced Income Fund) have been
designated Class B shares. Shares held prior to July 28, 1997 by such employee
benefit plans have been designated Class D shares. Shares held prior to July 28,
1997 of Funds offered with a FESL have been designated Class D shares. In
addition, shares of Dean Witter American Value Fund purchased prior to April 30,
1984, shares of Dean Witter Strategist Fund purchased prior to November 8, 1989
and shares of Dean Witter Natural Resource Development Securities Inc. and Dean
Witter Dividend Growth Securities Inc. purchased prior to July 2, 1984 (with
respect to such shares of each Fund, including such proportion of shares
acquired through reinvestment of dividends and capital gains distributions as
the total number of shares acquired prior to each of the preceding dates in this
sentence bears to the total number of shares purchased and owned by the
shareholder of that Fund) have been designated Class D shares. Shares of Dean
Witter Balanced Growth Fund and Dean Witter Balanced Income Fund held prior to
July 28, 1997 have been designated Class C shares except that shares of Dean
Witter Balanced Growth Fund and Dean Witter Balanced Income Fund held prior to
July 28, 1997 that were acquired in exchange for shares of an investment company
offered with a CDSC have been designated Class B shares and those that were
acquired in exchange for shares of an investment company offered with a FESL
have been designated Class A shares.

IV. THE CONVERSION FEATURE 

   Class B shares held before May 1, 1997 will convert to Class A shares in May,
2007, except that Class B shares which are purchased before July 28, 1997 by
trusts for which Dean Witter Trust Company ("DWTC") or Dean Witter Trust FSB
("DWTFSB") provides discretionary trustee services will convert to Class A
shares on or about August 29, 1997 (the CDSC will not be applicable to such
shares upon the conversion). In all other instances, Class B shares of each Fund
will automatically convert to Class A shares, based on the relative net asset
values of the shares of the two Classes on the conversion date, which will be
approximately ten (10) years after the date of the original purchase.
Conversions will be effected once a month. The 10 year period will be calculated
from the last day of the month in which the shares were purchased or, in the
case of Class B shares acquired through an exchange or a series of exchanges,
from the last day of the month in which the original Class B shares were
purchased, provided that shares originally purchased before May 1, 1997 will
convert to Class A shares in May, 2007. Except as set forth below, the
conversion of shares purchased on or after May 1, 1997 will take place in the
month following the tenth anniversary of the purchase. There will also be
converted at that time such proportion of Class B shares acquired through
automatic reinvestment of dividends owned by the shareholder as the total number
of his or her Class B shares converting at the time bears to the total number of
outstanding Class B shares purchased and owned by the shareholder. In the case
of Class B shares held by a 401(k) plan or other employer-sponsored plan
qualified under Section 401(a) of the Internal Revenue Code (the "Code") and for
which DWTC or DWTFSB serves as Trustee or the 401(k) Support Services Group of
DWR serves as recordkeeper, all Class B shares will convert to Class A shares on
the conversion date of the first shares of a Fund purchased by that plan. In the
case of Class B shares previously exchanged

                                        3
<PAGE>
for shares of an "Exchange Fund" (as such term is defined in the prospectus of
each Fund), the period of time the shares were held in the Exchange Fund
(calculated from the last day of the month in which the Exchange Fund shares
were acquired) is excluded from the holding period for conversion. If those
shares are subsequently re-exchanged for Class B shares of a Fund, the holding
period resumes on the last day of the month in which Class B shares are
reacquired.

   Effectiveness of the Conversion Feature is subject to the continuing
availability of a ruling of the Internal Revenue Service or an opinion of
counsel to the effect that (i) the conversion of shares does not constitute a
taxable event under the Code; (ii) Class A shares received on conversion will
have a basis equal to the shareholder's basis in the converted Class B shares
immediately prior to the conversion; and (iii) Class A shares received on
conversion will have a holding period that includes the holding period of the
converted Class B shares. The Conversion Feature may be suspended if the Ruling
or opinion is no longer available. In such event, Class B shares would continue
to be subject to Class B fees under the applicable Fund's 12b-1 Plan.

V. EXCHANGE PRIVILEGES 

   Shares of each Class may be exchanged for shares of the same Class of the
other Funds and for shares of certain other investment companies without the
imposition of an exchange fee as described in the prospectuses and statements of
additional information of the Funds. The exchange privilege of each Fund may be
terminated or revised at any time by the Fund upon such notice as may be
required by applicable regulatory agencies as described in each Fund's
prospectus.

VI. VOTING 

   Each Class shall have exclusive voting rights on any matter that relates
solely to its 12b-1 Plan, except that Class B shareholders will have the right
to vote on any proposed material increase in Class A's expenses, including
payments under the Class A 12b-1 Plan, if such proposal is submitted separately
to Class A shareholders. If the amount of expenses, including payments under the
Class A 12b-1 Plan, is increased materially without the approval of Class B
shareholders, the Fund will establish a new Class A for Class B shareholders
whose shares automatically convert on the same terms as applied to Class A
before the increase. In addition, each Class shall have separate voting rights
on any matter submitted to shareholders in which the interests of one Class
differ from the interests of any other Class.

                                        4
<PAGE>
                              DEAN WITTER FUNDS 
                  MULTIPLE CLASS PLAN PURSUANT TO RULE 18f-3 

                                  SCHEDULE A 
                               AT JULY 28, 1997 

<TABLE>
<CAPTION>
<S>      <C>
1)       Dean Witter American Value Fund
2)       Dean Witter Balanced Growth Fund
3)       Dean Witter Balanced Income Fund
4)       Dean Witter California Tax-Free Income Fund
5)       Dean Witter Capital Appreciation Fund
6)       Dean Witter Capital Growth Securities
7)       Dean Witter Convertible Securities Trust
8)       Dean Witter Developing Growth Securities Trust
9)       Dean Witter Diversified Income Trust
10)      Dean Witter Dividend Growth Securities Inc.
11)      Dean Witter European Growth Fund Inc.
12)      Dean Witter Federal Securities Trust
13)      Dean Witter Financial Services Trust
14)      Dean Witter Global Asset Allocation Fund
15)      Dean Witter Global Dividend Growth Securities
16)      Dean Witter Global Utilities Fund
17)      Dean Witter Health Sciences Trust
18)      Dean Witter High Yield Securities Inc.
19)      Dean Witter Income Builder Fund
20)      Dean Witter Information Fund
21)      Dean Witter Intermediate Income Securities
22)      Dean Witter International SmallCap Fund
23)      Dean Witter Japan Fund
24)      Dean Witter Managers' Select Fund
25)      Dean Witter Market Leader Trust
26)      Dean Witter Mid-Cap Growth Fund
27)      Dean Witter Natural Resource Development Securities Inc.
28)      Dean Witter New York Tax-Free Income Fund
29)      Dean Witter Pacific Growth Fund Inc.
30)      Dean Witter Precious Metals and Minerals Trust
31)      Dean Witter Special Value Fund
32)      Dean Witter Strategist Fund
33)      Dean Witter Tax-Exempt Securities Trust
34)      Dean Witter U.S. Government Securities Trust
35)      Dean Witter Utilities Fund
36)      Dean Witter Value-Added Market Series/Equity Portfolio
37)      Dean Witter World Wide Income Trust
38)      Dean Witter World Wide Investment Trust
</TABLE>

                                        5


<TABLE> <S> <C>

<PAGE>

<ARTICLE> 6
<CIK>     0000888122
<NAME>    DEAN WITTER HEALTH SCIENCES TRUST
       
<S>                             <C>
<PERIOD-TYPE>                   6-MOS
<FISCAL-YEAR-END>                          JUL-31-1997
<PERIOD-END>                               JAN-31-1997
<INVESTMENTS-AT-COST>                      351,250,751
<INVESTMENTS-AT-VALUE>                     494,279,879
<RECEIVABLES>                                6,282,092
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<OTHER-ITEMS-LIABILITIES>                    1,710,365
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<SENIOR-EQUITY>                                      0
<PAID-IN-CAPITAL-COMMON>                   363,100,261
<SHARES-COMMON-STOCK>                       31,334,590
<SHARES-COMMON-PRIOR>                       29,593,202
<ACCUMULATED-NII-CURRENT>                  (5,058,494)
<OVERDISTRIBUTION-NII>                               0
<ACCUMULATED-NET-GAINS>                    (8,700,891)
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<ACCUM-APPREC-OR-DEPREC>                   143,029,128
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<DIVIDEND-INCOME>                              104,859
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<OTHER-INCOME>                                       0
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<NET-CHANGE-FROM-OPS>                       52,099,287
<EQUALIZATION>                                       0
<DISTRIBUTIONS-OF-INCOME>                            0
<DISTRIBUTIONS-OF-GAINS>                  (28,286,327)
<DISTRIBUTIONS-OTHER>                                0
<NUMBER-OF-SHARES-SOLD>                      8,052,051
<NUMBER-OF-SHARES-REDEEMED>                (8,170,765)
<SHARES-REINVESTED>                          1,860,102
<NET-CHANGE-IN-ASSETS>                      49,494,426
<ACCUMULATED-NII-PRIOR>                       (28,348)
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<GROSS-EXPENSE>                              5,341,426
<AVERAGE-NET-ASSETS>                       477,440,008
<PER-SHARE-NAV-BEGIN>                            14.97
<PER-SHARE-NII>                                  (.16)
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<PER-SHARE-DIVIDEND>                                 0
<PER-SHARE-DISTRIBUTIONS>                        (.95)
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<PER-SHARE-NAV-END>                              15.71
<EXPENSE-RATIO>                                   2.22
<AVG-DEBT-OUTSTANDING>                               0
<AVG-DEBT-PER-SHARE>                                 0
        


</TABLE>


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