SCHOOL OF MINES, COLUMBIA COLLEGE,

CORNER 49TH STREET & 4TH AVENUE.

NEW YORK, November 6, 1889. 18

Dear Sir:-

The Committee of Arrangements for the meeting of the International Geological Congress, to be held in Philadelphia in 1891, will meet at the University of Pennsylvania in Philadelphia on Wednesday, November 13th., at 4 P.M..

Prof.O.C.Marsh
New Haven, Ct.