DEAN WITTER HEALTH SCIENCES TRUST, 497J, 1997-07-28

DEAN WITTER HEALTH SCIENCES TRUST
497J, 1997-07-28

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                 DEAN WITTER HEALTH SCIENCES TRUST
                     TWO WORLD TRADE CENTER
                    NEW YORK, NEW YORK 10048







                                        July 28, 1997


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

Re:  Dean Witter Health Sciences Trust
     File #33-48189
     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 July 17, 1997.


                                   Very truly yours,
                                   /s/ Ruth Rossi    
                                   Ruth Rossi
                                   Assistant Secretary
                                   


cc: Randolph Koch
    Barry Fink


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