NATIONAL ACADEMY OF SCIENCES

A *Scientific Session* of the NATIONAL ACADEMY OF SCIENCES will be held by appointment of the Council in the City of New York at Columbia College, for the reading of papers and memoirs only, commencing on Tuesday, the 16th day of November next, at noon.

Members are requested to communicate the titles of
papers which they propose to present, and estimate of the
time required for each, to the Home Secretary, several
days before the commencement of the session. His ad-
dress will be 1901 I Street, Washington, D. C., until
November 14th; afterwards at the place of meeting.

J. H. C. COFFIN,

*Home Secretary.*

WASHINGTON, D. C.

October 6, 1880.