Morgan Stanley Spectrum Select L.P.
C/O Demeter Management Corporation
522 Fifth Avenue, 13th Floor
New York, NY 10036

VIA EDGAR AND FEDERAL EXPRESS
- -----------------------------

October 16, 2007


Division of Corporation Finance
Securities and Exchange Commission
100 F Street, N.E.
Washington, D.C. 20549
Mail Stop 4561

Re:   Morgan Stanley Spectrum Select L.P. (the "Company")
      Form 10-K for Fiscal Year Ended December 31, 2006
      Filed March 8, 2007
      Form 10-Qs for Quarterly Periods Ended March 31, 2007 and June 30, 2007
      Filed May 14, 2007 and August 10, 2007, respectively
      File No. 000-19511

Ladies and Gentlemen:

      In furtherance of the letter submitted by Cadwalader, Wickersham & Taft
LLP, on behalf of Demeter Management Corporation, the general partner of the
Company (the "General Partner"), dated October 9, 2007 in response to the
comment letter of the staff (the "Staff") of the Securities and Exchange
Commission (the "Commission") to Lee Horwitz, Chief Financial Officer of the
General Partner, dated September 12, 2007, with respect to the above-referenced
filings, the Company acknowledges that:

o     the Company is responsible for the adequacy and accuracy of the disclosure
      in the filings;

o     Staff comments or changes to disclosure in response to Staff comments do
      not foreclose the Commission from taking any action with respect to the
      filings; and

o     the Company may not assert Staff comments as a defense in any proceeding
      initiated by the Commission or any person under the federal securities
      laws of the United States.

Very truly yours,

Morgan Stanley Spectrum Select L.P.
By:   Demeter Management Corporation, as General Partner of Morgan Stanley
      Spectrum Select  L.P.


By:   /s/ Walter Davis
      -------------------------------
      Name:  Walter Davis
      Title: President

cc:   Kevin Woody, Branch Chief
      Jennifer Monick
      Howard Efron
      Lee Horwitz
      Jeremy Beal
      Michael D. Wasserman, Esq.
      Todd M. Hand, Esq.
      Edwin L. Lyon, Esq.