DEPARTMENT OF STATE,
WASHINGTON.

May 21, 1897.

To the

Diplomatic and Consular Officers
of the United States.

Gentlemen:-

I take pleasure in introducing to you Professor
Othniel C. Marsh, a member of the United States Geological
Survey, who is about proceeding abroad to take part in the
International Congress at St. Petersburg during the coming sum-
mer.

I cordially bespeak for Professor Marsh such of-
ficial courtesies as you may be able to extend.