MORGAN STANLEY DEAN WITTER MID CAP DIVIDEND GROWTH SEC
497, 1998-04-06
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                                                Filed Pursuant to Rule 497(e)
                                                Registration File No.: 333-43135

PROSPECTUS --PROSPECTUS 
             MARCH 23, 1998 


              Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities 
(the "Fund") is an open-end, diversified management investment company whose 
investment objective is to seek total return. The Fund seeks to meet its 
investment objective by investing primarily in domestic and foreign equity 
securities of companies whose market capitalization falls within the 
capitalization range of the companies comprising the Standard and Poor's 
MidCap 400 Index, which capitalization range is approximately between $220 
million and $13 billion as of February 24, 1998, and that currently pay 
dividends and that have the potential for increasing dividends. 

             Initial Offering--Shares of the Fund are being offered in an 
underwriting by Dean Witter Distributors Inc. at $10.00 per share for Class 
B, Class C and Class D shares with all proceeds going to the Fund and at 
$10.00 per share plus a sales charge for Class A shares with the sales charge 
paid to the Underwriter and the net asset value of $10.00 per share going to 
the Fund. All expenses in connection with the organization of the Fund and 
this offering will be paid by the Investment Manager and Underwriter except 
for a maximum of $250,000 of organizational expenses to be reimbursed by the 
Fund. The initial offering will run from approximately April 24, 1998 through 
May 21, 1998. 

             Continuous Offering--A continuous offering of the shares of the 
Fund will commence approximately two weeks after the closing date of the 
initial offering which is anticipated for June 8, 1998. Class B, Class C and 
Class D shares will be priced at the net asset value per share and Class A 
shares will be priced at the net asset value per share plus a sales charge, 
in each case as next determined following receipt of an order. 

             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 March 23, 1998, 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. 

           MORGAN STANLEY DEAN WITTER 
           MID-CAP DIVIDEND GROWTH SECURITIES 
           TWO WORLD TRADE CENTER 
           NEW YORK, NEW YORK 10048 
           (212) 392-2550 OR 
           (800) 869-NEWS (TOLL-FREE) 
           TABLE OF CONTENTS 

Prospectus Summary/ 2 

Summary of Fund Expenses/ 4 

The Fund and its Management/ 6 

Investment Objective and Policies/ 6 

 Risk Considerations/ 12 

Investment Restrictions/ 13 

Underwriting/ 13 

Purchase of Fund Shares-- 
 Continuous Offering/ 14 

Shareholder Services/ 25 

Redemptions and Repurchases/ 28 

Dividends, Distributions and Taxes/ 29 

Performance Information/ 30 

Additional Information/ 30 

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 NOR ANY STATE SECURITIES COMMISSION PASSED UPON THE 
ACCURACY OR ADEQUACY OF THIS PROSPECTUS. ANY REPRESENTATION TO THE CONTRARY 
IS A CRIMINAL OFFENSE. 

       Dean Witter Distributors Inc., 
       Distributor 

                                           
<PAGE>
PROSPECTUS SUMMARY 
- ----------------------------------------------------------------------------- 

<TABLE>
<CAPTION>
<S>                  <C>
 ------------------- ------------------------------------------------------------------ 
The Fund             The Fund is organized as a Trust, commonly known as a 
                     Massachusetts business trust, and is an open-end, diversified 
                     management investment company. The Fund invests primarily in 
                     domestic and foreign equity securities of companies whose market 
                     capitalization falls within the capitalization range of the 
                     companies comprising the Standard and Poor's MidCap 400 Index, 
                     which capitalization range is approximately between $220 million 
                     and $13 billion as of February 24, 1998, and that currently pay 
                     dividends and that have the potential for increasing dividends. 
- -------------------  ------------------------------------------------------------------ 
Shares Offered       Shares of beneficial interest with $.01 par value (see page 30). 
                     The Fund offers four Classes of shares, each with a different 
                     combination of sales charges, ongoing fees and other features (see 
                     pages 14-24). 
- -------------------  ------------------------------------------------------------------ 
Initial Offering     Shares are being offered in an underwriting by Dean Witter 
                     Distributors Inc. at $10.00 per share for each of Class B, Class C 
                     and Class D and $10.00 per share plus a sales charge for Class A. 
                     The minimum purchase for each Class is 100 shares; however, Class 
                     D shares are only available for persons who are otherwise 
                     qualified to purchase such shares. The initial offering will run 
                     approximately from April 24, 1998 through May 21, 1998. The 
                     closing will take place on May 27, 1998 or such other date as may 
                     be agreed upon by Dean Witter Distributors Inc. and the Fund (the 
                     "Closing Date"). Shares will not be issued and dividends will not 
                     be declared by the Fund until after the Closing Date. If any 
                     orders received during the initial offering period are accompanied 
                     by payment, such payment will be returned unless an accompanying 
                     request for investment in a Dean Witter money market fund is 
                     received at the time the payment is made. Any purchase order may 
                     be cancelled at any time prior to the Closing Date. 
- -------------------  ------------------------------------------------------------------ 
Continuous Offering  A continuous offering will commence within approximately two weeks 
                     after the Closing Date. During the continuous offering, the 
                     minimum initial investment for each Class is $1,000 ($100 if the 
                     account is opened through EasyInvest (Service Mark)). Class D 
                     shares are only available to persons investing $5 million ($25 
                     million for certain qualified plans) or more and to certain other 
                     limited categories of investors. For the purpose of meeting the 
                     minimum $5 million (or $25 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 14). 
- -------------------  ------------------------------------------------------------------ 
Investment           The investment objective of the Fund is to seek total return (see 
 Objective           page 6). 
- -------------------  ------------------------------------------------------------------ 
Investment Manager   Dean Witter InterCapital Inc. ("InterCapital"), the 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 101 
                     investment companies and other portfolios with net assets under 
                     management of approximately $110 billion at February 28, 1998 (see 
                     page 6). 
- -------------------  ------------------------------------------------------------------ 
Management Fee       The Investment Manager receives a monthly fee at the annual rate 
                     of 0.75% of the Fund's average daily net assets. The fee should 
                     not be compared with fees paid by other investment companies 
                     without also considering applicable sales loads and distribution 
                     fees, including those noted below (see page 6). 
- -------------------  ------------------------------------------------------------------ 
Underwriter and      Dean Witter Distributors Inc. (the "Distributor") is the Fund's 
 Distributor and     Underwriter and Distributor. The Fund has adopted a distribution 
 Distribution Fee    plan pursuant to Rule 12b-1 under 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 13, 14 and 23). 
</TABLE>

                                2           
<PAGE>


<TABLE>
<CAPTION>
<S>                  <C>
 ------------------- ------------------------------------------------------------------ 
Alternative          Four classes of shares are offered: 
 Purchase            
 Arrangement         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 the average 
                     daily net assets of the Class (see pages 14, 18 and 23).

                     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 average daily net assets of Class B. Class B shares 
                     convert to Class A shares approximately ten years after the date 
                     of the original purchase (see pages 14, 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 the average daily net assets of the 
                     Class (see pages 14, 22 and 23). 

                     o Class D shares are offered only to investors meeting an initial
                     investment minimum of $5 million ($25 million for certain qualified 
                     plans) 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 14, 22 and 23). 
- -------------------  ------------------------------------------------------------------ 
Dividends and        Dividends from net investment income and distributions from net 
 Capital Gains       capital gains, if any, are paid at least annually. The Fund may, 
 Distributions       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 page 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 
                     EasyInvestSM, if after twelve months the shareholder has invested 
                     less than $1,000 in the account (see page 28). 
- -------------------  ------------------------------------------------------------------ 
Risk Considerations  The net asset value of the Fund's shares will fluctuate with 
                     changes in the market value of portfolio securities. Investing in 
                     medium-sized market capitalization companies may involve greater 
                     risk of volatility in the Fund's net asset value than is 
                     customarily associated with investing in larger, more established 
                     companies. The Fund may invest up to 35% of its net assets in 
                     lower rated convertible securities, which entails additional 
                     risks. In addition, it should be recognized that the foreign 
                     securities and markets in which the Fund may invest up to 25% of 
                     its total assets pose different and greater risks than those 
                     customarily associated with domestic securities and their markets 
                     (see pages 7-12). 
</TABLE>

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

 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 below are 
based on the fees and estimated other expenses for the first fiscal year of 
the Fund. 

<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+ ...................................     0.75%         0.75%        0.75%        0.75% 
12b-1 Fees (5)(6)...................................     0.25%         1.00%        1.00%        None 
Other Expenses+ ....................................     0.30%         0.30%        0.30%        0.30% 
Total Fund Operating Expenses+(7) ..................     1.30%         2.05%        2.05%        1.05% 
</TABLE>

- ------------ 
+      The Investment Manager has undertaken to assume all operating expenses 
       (except for brokerage and 12b-1 fees) and to waive the compensation 
       provided for in its Investment Management Agreement until such time as 
       the Fund has $50 million of net assets or until six months from 
       commencement of the Fund's operations, whichever occurs first. The 
       expenses and fees disclosed above do not reflect the assumption of any 
       expenses or the waiver of any compensation by the Investment Manager. 
(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)    "Total Fund Operating Expenses," as shown above with respect to each 
       Class, are based upon the sum of Management and 12b-1 Fees, and 
       estimated "Other Expenses." 

                                4           
<PAGE>
- ----------------------------------------------------------------------------- 

<TABLE>
<CAPTION>
 EXAMPLES                                                                       1 YEAR    3 YEARS 
- -----------------------------------------------------------------------------  -------- --------- 
<S>                                                                            <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 ....................................................................    $65       $92 
  Class B ....................................................................    $71       $94 
  Class C.....................................................................    $31       $64 
  Class D ....................................................................    $11       $33 

You would pay the following expenses on the same $1,000 investment assuming 
no redemption at the end of the period: 
  Class A ....................................................................    $65       $92 
  Class B ....................................................................    $21       $64 
  Class C ....................................................................    $21       $64 
  Class D ....................................................................    $11       $33 
</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 "Redemption 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>
THE FUND AND ITS MANAGEMENT 
- ----------------------------------------------------------------------------- 

   Morgan Stanley Dean Witter Mid-Cap Dividend Growth Securities (the "Fund") 
is an open-end, 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 December 23, 
1997. 

   Dean Witter InterCapital Inc. ("InterCapital" or the "Investment 
Manager"), whose address is Two 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 & 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 101 investment companies, twenty-eight of which 
are listed on the New York Stock Exchange, with combined assets of 
approximately $106 billion at February 28, 1998. The Investment Manager also 
manages portfolios of pension plans, other institutions and individuals which 
aggregated approximately $4.1 billion at such date. 

   The Fund has retained the Investment Manager 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 Trustees review the various services provided by 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 
following annual rates to the Fund's net assets: 0.75% of the daily net 
assets. The Investment Manager has agreed to assume all operating expenses 
(except for brokerage and 12b-1 fees) and to waive the compensation provided 
for in its Management Agreement until such time as the Fund has $50 million 
of net assets or six months from the date of commencement of the Fund's 
operations, whichever occurs first. The expenses of the Fund include: the fee 
of the Investment Manager; the fee pursuant to the Plan of Distribution (see 
"Purchase of Fund Shares"); taxes; transfer agent, custodian and auditing 
fees; certain legal fees; and printing and other expenses relating to the 
Fund's operations which are not expressly assumed by the Investment Manager 
under its Investment Management Agreement with the Fund. 

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

   The investment objective of the Fund is to seek total return. The 
objective is a fundamental policy of the Fund and may not be changed without 
a vote of a majority of the outstanding voting securities of the Fund. Total 
return consists of capital appreciation (including realized and unrealized 
capital gains and losses) and current income (including dividends, interest 
and, in the case of discounted instruments, discount accruals). There is no 
assurance that the objective will be achieved. The following policies may be 
changed by the Board of Trustees without shareholder approval. 

   The Fund seeks to achieve its investment objective by investing, under 
normal circumstances, at least 65% of its total assets in a diversified 
portfolio of domestic and foreign equity securities of compa- 

                                6           
<PAGE>
nies whose capitalization falls within the range of companies comprising the 
Standard & Poor's MidCap 400 Index ("S&P 400"), which capitalization range is 
approximately between $220 million and $13 billion as of February 24, 1998, 
and that currently pay dividends and that have the potential for increasing 
dividends. The Fund may invest up to 35% of its total assets in common stocks 
of U.S. companies that fall outside the range of mid-cap securities or in 
non-dividend paying mid-cap securities and in U.S. Government securities 
(securities issued or guaranteed as to principal and interest by the United 
States or its agencies and instrumentalities), investment grade corporate 
debt securities and/or money market instruments when, in the opinion of the 
Investment Manager, the projected total return on such securities is equal to 
or greater than the expected total return on equity securities or when such 
holdings might be expected to reduce the volatility of the portfolio (for 
purposes of this provision, the term "total return" means the difference 
between the cost of a security and the aggregate of its market value and 
dividends received); or in money market instruments under any one or more of 
the following circumstances: (i) pending investment of proceeds of sale of 
the Fund's shares or of portfolio securities; (ii) pending settlement of 
purchases of portfolio securities; or (iii) to maintain liquidity for the 
purpose of meeting anticipated redemptions. The Fund may also invest up to 
35% of its net assets in convertible bonds or preferred stocks that are 
convertible into common stock, or in rights and warrants, so long as each 
such investment is consistent with the Fund's investment objective. There are 
no minimum rating or quality requirements with respect to convertible 
securities in which the Fund may invest and, thus, all or some of such 
securities may be below investment grade. The Fund will not invest in 
convertible securities that are in default in payment of principal or 
interest. 

   In the opinion of the Investment Manager, mid-cap companies typically have 
a better growth potential than their large-cap counterparts because they are 
still in the early and more dynamic period of their corporate existences. 
Often mid-size companies and the industries in which they are focused are 
still evolving as opposed to the more mature industries served by large-cap 
companies. Moreover, mid-cap companies are not considered "emerging" stocks, 
nor are they as volatile as small-cap firms. This is because mid-cap 
companies have increased liquidity, attributable to their larger market 
capitalization as well as longer and more established track records, and a 
stronger market presence and dominance than small-cap firms. Consequently, 
because of the better growth inherent in these companies and their 
industries, mid-cap companies offer superior return potential to large-cap 
companies, albeit with greater risk, yet owing to their relatively larger 
size and better recognition in the investment community, they have a reduced 
risk profile compared to smaller, emerging or micro-cap companies, but offer 
less opportunity for capital appreciation. 

   Notwithstanding the Fund's investment objective of seeking total return, 
the Fund may, for defensive purposes, without limitation, invest in: 
obligations of the United States Government, its agencies or 
instrumentalities; cash and cash equivalents in major currencies; repurchase 
agreements; zero coupon securities; money market instruments; and commercial 
paper. 

PORTFOLIO CHARACTERISTICS 

   Fixed-Income Securities. All fixed-income securities are subject to two 
types of risks: the credit risk and the interest rate risk. The credit risk 
relates to the ability of the issuer to meet interest or principal payments 
or both as they come due. The interest rate risk refers to the fluctuations 
in the net asset value of any portfolio of fixed-income securities resulting 
from the inverse relationship between price and yield of fixed-income 
securities; that is, when the general level of interest rates rises, the 
prices of outstanding fixed-income securities decline, and when interest 
rates fall, prices rise. 

   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 

                                7           
<PAGE>
Investment Manager. Investments in securities rated either Baa by Moody's or 
BBB by S&P 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, 
except a convertible security, held by the Fund is subsequently downgraded 
below investment grade 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 net assets, the Investment Manager will sell immediately 
sufficient securities to reduce the total to below 5%. 

   Convertible Securities. The Fund may acquire, through purchase or a 
distribution by the issuer of a security held in its portfolio, a 
fixed-income security which is convertible into common stock of the issuer. 
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 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. 

   Lower-Rated Convertible Securities. A portion of the convertible 
securities in which the Fund may invest will generally be below investment 
grade (see above). Securities below investment grade are the equivalent of 
high yield, high risk bonds, commonly known as "junk bonds." Investment grade 
is generally considered to be debt securities rated BBB or higher by S&P or 
Baa or higher by Moody's. Convertible securities rated Baa by Moody's or BBB 
by S&P have speculative characteristics greater than those of more highly 
rated securities, while convertible securities rated Ba or BB or lower by 
Moody's or S&P, respectively, are considered to be speculative investments. 
The Fund will not invest in convertible securities that are in default in 
payment of principal or interest. 

   Because of the special nature of the Fund's permitted investments in lower 
rated convertible securities, it must take account of certain special 
considerations in assessing the risks associated with such investments. The 
prices of lower rated securities have been found to be less sensitive to 
changes in prevailing interest rates than higher rated investments, but are 
likely to be more sensitive to adverse economic changes or individual 
corporate developments. During an economic downturn or substantial period of 
rising interest rates, highly leveraged issuers may experience financial 
stress which would adversely affect their ability to service their principal 
and interest payment obligations, to meet their projected business goals or 
to obtain additional financing. If the issuer of a lower-rated security owned 
by the Fund defaults, the Fund may incur additional expenses to seek 
recovery. In addition, periods of economic uncertainty and change can be 
expected to result in an increased volatility of market prices of lower rated 
securities and a corresponding volatility in the net asset value of a share 
of the Fund. 

                                8           
<PAGE>
   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. 
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. 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 
money market instruments, which are maintained in a segregated account 
pursuant to applicable regulations and that are equal to at least the market 
value, determined daily, of the loaned securities. 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, loans of portfolio securities will only be made to 
firms deemed by the Investment Manager to be creditworthy and when the income 
which can be earned from such loans justifies the attendant risks. 

   Private Placements and Restricted Securities. The Fund may invest up to 5% 
of its total assets in securities which are subject to restrictions on resale 
because they have not been registered under the Securities Act of 1933, as 
amended (the "Securities Act"), or which are otherwise restricted. 
(Securities eligible for resale pursuant to Rule 144A under the Securities 
Act, and determined to be liquid pursuant to the procedures discussed in the 
following paragraph, are not subject to the foregoing restriction.) These 
securities are generally referred to as private placements or restricted 
securities. Limitations on the resale of such securities may have an adverse 
effect on their marketability, and may prevent the Fund from disposing of 
them promptly at reasonable prices. The Fund may have to bear the expense of 
registering such securities for resale and the risk of substantial delays in 
effecting such registration. 

   The Securities and Exchange Commission has adopted Rule 144A under the 
Securities Act, which permits the Fund to sell restricted securities to 
qualified institutional buyers without limitation. The Investment Manager, 
pursuant to procedures adopted by the Board of Trustees of the Fund, will 
make a determination as to the liquidity of each restricted security 
purchased by the Fund. If a restricted security is determined to be "liquid," 
such security will not be included within the category "illiquid securities," 
which under current policy may not exceed 15% of the Fund's net assets. 
However, 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. 

   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 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 

                                9           
<PAGE>
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 those risks. These procedures include effecting repurchase 
transactions only with large, well-capitalized and well-established financial 
institutions whose financial condition will be continually monitored by the 
Investment Manager subject to procedures established by the Board of Trustees 
of the Fund. In addition, as described above, the value of the collateral 
underlying the repurchase agreement will be at least equal to the repurchase 
price, including any accrued interest earned on the repurchase agreement. In 
the event of a default or bankruptcy by a selling financial institution, the 
Fund will seek to liquidate such collateral. However, the exercising of the 
Fund's right to liquidate such collateral could involve certain costs or 
delays and, to the extent that proceeds from any sale upon a default of the 
obligation to repurchase were less than the repurchase price, the Fund could 
suffer a loss. It is the current policy of the Fund not to invest in 
repurchase agreements that do not mature within seven days if any such 
investment, together with any other illiquid assets held by the Fund, amounts 
to more than 15% of its net assets. 

   Foreign Securities. The Fund may invest up to 25% of the value of its 
total assets, at the time of purchase, in equity securities, rights and 
warrants issued by foreign issuers. The Fund will invest in foreign 
securities whose market capitalization is within the range of the companies 
comprising the S&P 400. Although certain of these securities may not be 
mid-cap companies in the foreign markets in which they trade, they will be 
included in the mid-cap securities in which the Fund may invest. Such 
investments may also be in the form of American Depository Receipts (ADRs), 
European Depository Receipts (EDRs) or other similar 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. The Fund's investments in 
unlisted foreign securities are subject to the Fund's overall policy limiting 
its investment in illiquid securities to 15% or less of its net assets. For a 
discussion of the risks of foreign securities, see "Risk Considerations" 
below. 

   Zero Coupon Securities. A portion of the fixed-income securities purchased 
by the Fund may be zero coupon securities. Such securities are purchased at a 
discount from their face amount, giving the purchaser the right to receive 
their full value at maturity. 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 on interest-paying securities if prevailing 
interest rates rise. 

   A zero coupon security pays no interest to its holder during its life. 
Therefore, to the extent the Fund invests in zero coupon securities, it will 
not receive current cash available for distribution to shareholders. In 
addition, zero coupon securities are subject to substantially greater price 
fluctuations during periods of changing prevailing interest rates than are 
comparable securities which pay interest on a current basis. 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. 

   Investment in Real Estate Investment Trusts. The Fund may invest in real 
estate investment trusts, which pool investors' funds for investments 
primarily in commercial real estate proper- 

                               10           
<PAGE>
ties. Investment in real estate investment trusts may be the most practical 
available means for the Fund to invest in the real estate industry (the Fund 
is prohibited from investing in real estate directly). As a shareholder in a 
real estate investment trust, the Fund would bear its ratable share of the 
real estate investment trust's expenses, including its advisory and 
administration fees. At the same time the Fund would continue to pay its own 
investment management fees and other expenses, as a result of which the Fund 
and its shareholders in effect will be absorbing duplicate levels of fees 
with respect to investments in real estate investment trusts. Real estate 
investment trusts are not diversified and are subject to the risk of 
financing projects. They are also subject to heavy cash flow dependency, 
defaults by borrowers or tenants, self-liquidation, and the possibility of 
failing to qualify for tax-free status under the Internal Revenue Code and 
failing to maintain exemption from the Investment Company Act of 1940, as 
amended. 

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"), Morgan Stanley and Co. Incorporated and other 
broker-dealer affiliates of InterCapital, the views of others regarding 
economic developments and interest rate trends, and the Investment Manager's 
own analysis of factors it deems relevant. No particular emphasis is given to 
investments in securities for the purpose of earning current income. The 
Fund's portfolio is managed within InterCapital's Growth and Income Group, 
which manages 26 equity funds and fund portfolios with approximately $33.3 
billion in assets as of February 27, 1998. Paul D. Vance, Senior Vice 
President of InterCapital and Steven M. MacNamara, Assistant Vice President 
of InterCapital, each a member of InterCapital's Growth and Income Group, are 
the primary portfolio managers of the Fund. Mr. Vance has been a portfolio 
manager at InterCapital for over five years. Mr. MacNamara has been a 
portfolio manager at InterCapital since April, 1996 and prior thereto was a 
Senior Portfolio Manager with Investment Advisors International. 

   Although the Fund does not intend to engage in substantial short-term 
trading as a means of achieving its investment objective, it may sell 
portfolio securities without regard to the length of time they have been 
held, in accordance with the investment policies described earlier. Portfolio 
changes will be effected whenever the Fund's Investment Manager believes they 
will benefit the performance of the portfolio. As a result the Fund does 
expect to engage in a substantial number of portfolio transactions. It is 
anticipated that, under normal market conditions, the Fund's portfolio 
turnover rate will not exceed 100% in any one year. The Fund will incur 
brokerage costs commensurate with its portfolio turnover rate; thus a higher 
level (over 100%) of portfolio transactions will increase the Fund's overall 
brokerage expenses. Short term gains and losses may result from such 
portfolio transactions. See "Dividends, Distributions and Taxes" for a 
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. 

   Pursuant to an order of the Securities and Exchange Commission the Fund 
may effect principal transactions in certain money market instruments with 
DWR. In addition, the Fund may incur brokerage commissions on transactions 
conducted through DWR, Morgan Stanley and Co. Incorporated and other brokers 
and dealers that are affiliates of InterCapital. 

                               11           
<PAGE>
RISK CONSIDERATIONS 
- ----------------------------------------------------------------------------- 

   The net asset value of the Fund's shares will fluctuate with changes in 
the market value of its portfolio securities. The market value of the Fund's 
portfolio securities will increase or decrease due to a variety of economic, 
market or political factors which cannot be predicted. The Fund is intended 
for long-term investors who can accept the risks involved in seeking total 
return through investment primarily in the securities of medium-sized 
companies. It should be recognized that investing in such companies involves 
greater risk than is customarily associated with investing in more 
established companies. 

   Mid-Cap Stocks. Investing in medium-sized market capitalization companies 
may involve greater risk of volatility of the Fund's net asset value than is 
customarily associated with investing in larger, more established companies. 
Often mid-size companies and the industries in which they are focused are 
still evolving and while this may offer better growth potential than larger, 
established companies, it also may make them more sensitive to changing 
market conditions. Because prices of stocks, including mid-cap stocks, 
fluctuate from day to day, the value of an investment in the Fund will vary 
based upon the Fund's investment performance. 

   Foreign Securities. The Fund may invest up to 25% of its total assets in 
equity securities of non-U.S. companies, including American or other 
Depository Receipts, rights, warrants and the direct purchase of foreign 
securities. Investments in foreign securities involve risks relating to local 
foreign political or economic developments, potential nationalization, 
withholding taxes on dividend or interest payments, and limitations on the 
use or transfer of Fund assets and any effects of foreign social, economic or 
political instability. Foreign securities investments may be affected by 
changes in currency rates or exchange control regulations, changes in 
governmental administration or economic or monetary policy (in the United 
States and abroad) or changed circumstances in dealings between nations. 
Costs may be incurred in connection with conversions between various 
currencies held by the Fund. Foreign companies may have less public or less 
reliable information available about them and may be subject to less 
governmental regulation than U.S. companies. Securities of foreign companies 
may be less liquid and more volatile than securities of U.S. companies. 

   Securities of foreign issuers may be less liquid than comparable 
securities of U.S. issuers and, as such, their price changes may be more 
volatile. 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 the Fund's trades effected in 
such markets. As such, the 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 the 
extent the Fund purchases Eurodollar certificates of deposit issued by 
foreign branches of domestic United States banks, consideration will be given 
to their domestic marketability, the lower reserve requirements normally 
mandated for overseas banking operations, the possible impact of 
interruptions in the flow of international currency transactions and future 
international political and economic developments which might adversely 
affect the payment of principal or interest. 

   Year 2000. The investment management services provided to the Fund by the 
Investment Manager, and the services provided by the Distributor and the 
Transfer Agent to shareholders, depend on the smooth functioning of their 
computer systems. Many computer software systems in use today cannot 
recognize the year 2000, but revert to 1900 

                               12           
<PAGE>
or 1980, due to the manner in which dates were encoded and calculated. That 
failure could have a negative impact on the handling of securities trades, 
pricing and account services. The Investment Manager, the Distributor and the 
Transfer Agent have been actively working on necessary changes to their own 
computer systems to deal with the year 2000 and expect that their systems 
will be adapted before that date, but there can be no assurance that they 
will be successful or that interaction with other noncomplying computer 
systems will not impair their services at that time. 

   In addition, it is possible that the markets for securities in which the 
Fund invests may be detrimentally affected by computer failures throughout 
the financial services industry beginning January 1, 2000. Improperly 
functioning trading systems may result in settlement problems and liquidity 
issues. In addition, corporate and governmental data processing errors may 
result in production problems for individual companies and overall economic 
uncertainties. Earnings of individual issuers will be affected by remediation 
costs, which may be substantial and may be reported inconsistently in U.S. 
and foreign financial statements. Accordingly, the Fund's investments may be 
adversely affected. 

   For additional risk disclosure, please refer to the "Portfolio 
Characteristics" section of the Prospectus and to the "Investment Practices 
and Policies" section of 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. With respect to 75% of its assets, invest more than 5% of the value of 
    its total assets in the securities of any one issuer (other than 
    obligations issued, or guaranteed by, the United States Government, its 
    agencies or instrumentalities), except that the Fund may invest all or 
    substantially all of its assets in another registered investment company 
    having the same investment objective and policies and substantially the 
    same investment restrictions as the Fund (a "Qualifying Portfolio"). 

     2. With respect to 75% of its assets, purchase more than 10% of all 
    outstanding voting securities or any class of securities of any one 
    issuer, except that the Fund may invest all or substantially all of its 
    assets in a Qualifying Portfolio. 

     3. Invest 25% or more of the value of its total assets in securities of 
    issuers in any one industry. This restriction does not apply to 
    obligations issued or guaranteed by the United States Government or its 
    agencies or instrumentalities. 

   See the Statement of Additional Information for additional investment 
restrictions. 

UNDERWRITING 
- ----------------------------------------------------------------------------- 

   Dean Witter Distributors Inc. (the "Underwriter") has agreed to purchase 
up to 10,000,000 shares from the Fund, which number may be increased or 
decreased in accordance with the Underwriting Agreement. The initial offering 
will run approximately from April 24, 1998 through May 21, 

                               13           
<PAGE>
1998. The Underwriting Agreement provides that the obligation of the 
Underwriter is subject to certain conditions precedent and that the 
Underwriter will be obligated to purchase the shares on May 27, 1998, or such 
other date as may be agreed upon by the Underwriter and the Fund (the 
"Closing Date"). Shares will not be issued and dividends will not be declared 
by the Fund until after the Closing Date. For this reason, payment is not 
required to be made prior to the Closing Date. If any orders received during 
the initial offering period are accompanied by payment, such payment will be 
returned unless an accompanying request for investment in a Dean Witter money 
market fund is received at the time the payment is made. Prospective 
investors in money market funds should request and read the money market fund 
prospectus prior to investing. All such funds received and invested in a Dean 
Witter money market fund will be automatically invested in the Fund on the 
Closing Date without any further action by the investor. An investor may 
cancel his or her purchase of Fund shares without penalty at any time prior 
to the Closing Date. 

   The Underwriter will purchase Class B, Class C and Class D shares from the 
Fund at $10.00 per share with all proceeds going to the Fund and will 
purchase Class A shares at $10.00 per share plus a sales charge as set forth 
under "Purchase of Fund Shares--Continuous Offering--Initial Sales Charge 
Alternative--Class A Shares" with the sales charge paid to the Underwriter 
and the net asset value of $10.00 per share going to the Fund. The 
Underwriter may, however, receive contingent deferred sales charges from 
future redemptions of Class A, Class B and Class C shares (see "Purchase of 
Fund Shares--Continuous Offering"). 

   The Underwriter shall, regardless of its expected underwriting commitment, 
be entitled and obligated to purchase only the number of shares for which 
purchase orders have been received by the Underwriter prior to 2:00 p.m., New 
York time, on the third business day preceding the Closing Date, or such 
other date as may be agreed to between the parties. 

   The minimum number of Fund shares which may be purchased by any 
shareholder pursuant to this offering is 100 shares. Certificates for shares 
purchased will not be issued unless requested by the shareholder in writing. 

PURCHASE OF FUND SHARES--CONTINUOUS OFFERING 
- ----------------------------------------------------------------------------- 

GENERAL 

   The Fund offers each class of its shares for sale to the public on a 
continuous basis. Dean Witter Distributors Inc. (the "Distributor") will act 
as the Distributor of each Class of the Fund's shares during the continuous 
offering. Pursuant to a Distribution Agreement between the Fund and 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 dealer 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 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 ($25 million for certain 
qualified plans), 

                               14           
<PAGE>
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 ($25 
million for certain qualified plans) or more and to certain other limited 
categories of investors. For the purpose of meeting the minimum $5 million or 
$25 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 Morgan Stanley Dean Witter Mid-Cap Dividend 
Growth Securities, directly to Morgan Stanley Dean Witter Trust FSB (the 
"Transfer Agent" or "MSDW Trust") at P.O. Box 1040, Jersey City, NJ 07303 or 
by contacting an account executive of DWR or other Selected Broker-Dealer. 
When purchasing 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. The minimum initial purchase in the case of 
an "Education IRA" is $500, if the Distributor has reason to believe that 
additional investments will increase the investment in the account to $1,000 
within three years. In the case of investments pursuant to (i) Systematic 
Payroll Deduction Plans (including Individual Retirement Plans), (ii) the 
InterCapital mutual fund asset allocation program and (iii) fee-based 
programs approved by the Distributor, pursuant to which participants pay an 
asset based fee for services in the nature of investment advisory, 
administrative services and/or brokerage, the Fund, in its discretion, may 
accept investments without regard to any minimum amounts which would 
otherwise be required, provided, in the case of Systematic Payroll Deduction 
Plans, that the Distributor has reason to believe that additional investments 
will increase the investment 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. In addition, some sales personnel of the Selected 
Broker-Dealer will receive various types of 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. 

                               15           
<PAGE>
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." 

   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 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 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." 

                               16           
<PAGE>
   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 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 (or $25 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 o 
- ---------  ------------------------- -------------  --------------------- 
                                                           B shares convert 
                                                           to A shares 
              Maximum 5.0%                                 automatically 
              CDSC during the first                        after 
              year decreasing                              approximately 
     B        to 0 after six years         1.0%            ten years 
- ---------  ------------------------- -------------  --------------------- 
              1.0% CDSC during 
     C        first year                   1.0%             No 
- ---------  ------------------------- -------------  --------------------- 
     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. 

                               17           
<PAGE>
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: 

<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 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 sched- 

                               18           
<PAGE>
ule 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 that, together with the 
current investment amount, is equal to at least $5 million ($25 million for 
certain qualified plans), 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. 

   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 MSDW Trust (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, administrative and/or 
brokerage services (such investments are subject to all of the terms and 
conditions of such programs, which may include termination fees, mandatory 
redemption upon termination and such other circumstances as specified in the 
program's agreements and restrictions on transferability of Fund shares); 

   (3) employer-sponsored 401(k) and other plans qualified under Section 
401(a) of the Internal Revenue Code ("Qualified Retirement Plans") with at 
least 200 eligible employees and for which MSDW Trust serves as Trustee or 
DWR's Retirement Plan Services serves as recordkeeper pursuant to a written 
Recordkeeping Services Agreement; 

   (4) Qualified Retirement Plans for which MSDW Trust serves as Trustee or 
DWR's Retirement Plan Services serves as recordkeeper pursuant to a written 
Recordkeeping Services Agreement; 

   (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. 

                               19           
<PAGE>
   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 Selected 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 Qualified 
Retirement Plans, three years) preceding the redemption. In addition, Class B 
shares are subject to an annual 12b-1 fee of 1.0% of 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 redeemed 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 purchased by Qualified 
Retirement Plans for which MSDW Trust serves as Trustee or DWR's Retirement 
Plan Services serves as recordkeeper pursuant to a written Recordkeeping 
Services Agreement, 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 Qualified Retirement 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 
Qualified Retirement 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 

                               20           
<PAGE>
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 
Qualified Retirement Plan 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 MSDW Trust serves as 
Trustee or DWR's Retirement Plan Services serves as recordkeeper pursuant to 
a written Recordkeeping Services Agreement ("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. 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 acquired in exchange for shares 
of another fund originally purchased before May 1, 1997 will convert to Class 
A 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 Qualified Retirement Plan for which MSDW Trust serves as Trustee or 
DWR's Retirement Plan Services serves as recordkeeper pursuant to a written 
Recordkeeping Services Agreement, 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 

                               21           
<PAGE>
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. 

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 ($25 million 
for Qualified Retirement Plans for which MSDW Trust serves as Trustee or 
DWR's Retirement Plan Services serves as recordkeeper pursuant to a written 
Recordkeeping Services Agreement) 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, administrative and/or brokerage services (subject to all 
of the terms and conditions of such programs, referred to in (i) and (ii) 
above which may include termination fees, mandatory redemption upon 
termination and such other circumstances as specified in the programs' 
agreements, 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 (or $25 million) minimum initial 
investment to qualify to 

                               22           
<PAGE>
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 (or $25 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 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. 

   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. 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 ex- 

                               23           
<PAGE>
penses 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. 

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; 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); and (2) all portfolio 
securities for which over-the-counter market quotations are readily available 
are valued at the latest bid price. When market quotations are not readily 
available, including circumstances under which it is determined by the 
Investment Manager that sale and 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 Board of Trustees. 

   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. 

   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' market value, in which case 
these securities will be valued at their fair value as determined by 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 the close of the 
New York Stock Exchange. The values of such securities used in computing the 
net asset value of the Fund's shares are determined as of such times. Foreign 
currency exchange rates are also generally determined prior to the close of 
the New York Stock Exchange. Occasionally, events which affect the values of 
such securities and such exchange rates may occur between the times at which 
they are determined and the close of the New York Stock Exchange and will 
therefore not be reflected in the computation of the Fund's net asset value. 
If events that may affect the value of such 

                               24           
<PAGE>
securities occur during such period, then these securities may be valued at 
their fair value as determined in good faith under procedures established by 
and under the supervision of the Trustees. 

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 Fund), 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 thirty 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 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 (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 then current net asset 
value. The Withdrawal Plan provides for monthly or quarterly (March, June, 
September and December) checks in any 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- 

                               25           
<PAGE>
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. ("Global Short-Term"), which is a Dean Witter 
Fund offered with a CDSC. 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, Global 
Short-Term 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 day. Subsequent exchanges between any of the money market funds 
and any of the Dean Witter Multi-Class Funds, FSC Funds or Global Short-Term 
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 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 Global Short-Term, 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 
Global Short-Term 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 Global Short-Term (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. 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, if any, 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 shares of Global Short-Term Class 
B shares of another Dean Witter Multi-Class 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 

                               26           
<PAGE>
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 have been 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 any 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 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 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 a.m. 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 case 
with the Dean Witter Funds in the past. 

   For further information regarding the Exchange Privilege, shareholders 
should contact their account executive or the Transfer Agent. 

                               27           
<PAGE>
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 shares (see 
"Purchase of Fund Shares"). If shares are held in a shareholder's account 
without a share certificate, a written request for redemption sent 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, 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 request of the shareholder. The repurchase price is the 
net asset value per share next determined (see "Purchase of Fund Shares") 
after such purchase 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 upon repurchase 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 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 Dealer are referred to their account 
executive regarding restrictions on redemption of shares of the Fund pledged 
in the margin account. 

   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 their 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, upon 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 EasyInvestSM, 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. 

                               28           
<PAGE>
DIVIDENDS, DISTRIBUTIONS AND TAXES 
- ----------------------------------------------------------------------------- 

   Dividends and Distributions.  The Fund declares dividends separately for 
each Class of shares and intends to pay income dividends and to distribute 
net realized short-term and long-term capital gains, if any, at least once 
each year. The Fund may, however, determine either to distribute or 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 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 net short-term capital gains to shareholders and otherwise remain 
qualified 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. Shareholders who are required to pay taxes on 
their income will normally have to pay federal income taxes, and any state 
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 or 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 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. Capital gains distributions are not 
eligible for the dividends received deduction. 

   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 be sent full 
information on their dividends and capital gains distributions for tax 
purposes, including information as to the portion taxable as ordinary income, 
the portion taxable as long-term capital gains, and the amount of dividends 
eligible for the Federal dividends received deduction available to 
corporations. Shareholders will also be notified of their proportionate share 
of long-term capital gains distributions that are eligible for a reduced rate 
of tax under the Taxpayer Relief Act of 1997. 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. 

   Shareholders should consult their tax advisers as to the applicability of 
the foregoing to their current situation. 

                               29           
<PAGE>
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 
"average 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 periods 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, 
year-by-year or other types of total return figures. Such calculations may or 
may not reflect the deduction of any sales charge which, if reflected, would 
reduce the performance quoted. 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. The Fund from time to time may also advertise its 
performance relative to certain performance rankings and indexes compiled by 
independent organizations, such as mutual fund performance rankings of Lipper 
Analytical Services, Inc., the S&P 400, NASDAQ Composite, Russell Mid Cap 
Index, S&P 500 Index and the Wilshire Mid Cap Index. 

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. Under certain 
circumstances, the Trustees may be removed by action of the Trustees or by 
the Shareholders. 

   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 notice of such 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 
thus, in the opinion of Massachusetts counsel to the Fund, the risk to Fund 
shareholders of personal liability is remote. 

   Code of Ethics. Directors, officers and employees of InterCapital, Dean 
Witter Services Company 

                               30           
<PAGE>
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 benefit 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 also 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 
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. 

   The Investment Manager provided the initial capital for the Portfolio by 
purchasing 1,250 shares each of Class A, Class B, Class C and Class D of each 
Portfolio for $12,500, respectively, on February 6, 1998. As of the date of 
this Prospectus, the Investment Manager owned 100% of the outstanding shares 
of the Fund. The Investment Manager may be deemed to control the Fund until 
such time as it owns less than 25% of the outstanding shares of the Fund. 

                               31           
<PAGE>
Morgan Stanley Dean Witter 
Mid-Cap Dividend Growth Securities 
Two World Trade Center 
New York, New York 10048 

TRUSTEES 
Michael Bozic 
Charles A. Fiumefreddo 
Edwin J. Garn 
John R. Haire 
Wayne E. Hedien 
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 

Paul D. Vance 
Vice President 

Steven M. MacNamara 
Assistant 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 
Morgan Stanley Dean Witter Trust FSB 
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. 

MORGAN STANLEY 
DEAN WITTER 
MID-CAP DIVIDEND 
GROWTH SECURITIES 


PROSPECTUS--MARCH 23, 1998 






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