MORGAN STANLEY DEAN WITTER DEVELOPING GROWTH SECURITIES TRUS, 497J, 1998-11-25

MORGAN STANLEY DEAN WITTER DEVELOPING GROWTH SECURITIES TRUS
497J, 1998-11-25

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     MORGAN STANLEY DEAN WITTER DEVELOPING GROWTH SECURITIES TRUST
                        TWO WORLD TRADE CENTER
                       NEW YORK, NEW YORK 10048




                                                  November 25, 1998



Securities and Exchange Commission
450 Fifth Street, N.W.
Washington, D.C.  20549

Re:  Morgan Stanley Dean Witter Developing Growth Securities Trust
     File 2-81151
     Rule 497(j) Filing

Dear Sir/Madam:

      On  behalf of the Registrant, the undersigned certifies that the
form  of Prospectus and Statement of Additional Information that would
have  been  filed  under Section 497(c) would not have  differed  from
those   contained  in  the  text  of  the  Registrant's  most   recent
registration  statement that was filed electronically via  EDGAR  with
the Securities and Exchange Commission on November 25, 1998.




                                                  Very truly yours,
                                                  /S/Marilyn K. Cranney
                                                     Marilyn K. Cranney
                                                     Assistant Secretary





cc: Randolph Koch
    Barry Fink