120 Sutter St, San Francisco, Cal, June 2, 1887.

Prof. A. Hall,

Secretary of the National Academy of Sciences,
Naval Observatory, Washington, D. C.

My Dear Professor Hall:

I have to acknowledge your note saying that
I have been appointed to write Prof. Watson's biography and to in-
form you that I will do it at the first possible moment. It may, how-
ever, be sometime yet.

I am, my dear Professor Hall,

[Dictated.]

NATIONAL ACADEMY OF SCIENCES.

NOTICE.

Memoirs to accompany the President's report to Congress must be sent to the President of the Academy before December 1st, 1887.

Every memoir must be ready for printing, and the drawings, if any, must be complete, in order to insure publication.

A. HALL,
Home Secretary.

WASHINGTON,
1887, November 12th.