Meeting held in the Lecture Hall of the National Museum. President Hubbard in the chair. Attendance, 750.

Major J. W. Powell delivered an address on "The Grand cañon of Colorado river."

April 17, 1891. 52d meeting.

Meeting held in Lincoln Hall. President Hubbard in the chair. Attendance, 1,000.

Mr. Geo. W. Melville, Engineer-in-Chief, U. S. N., briefly explained the purposes of arctic exploration.

Civil Engineer R. E. Peary, U. S. N., addressed the Society on the subject of his proposed northern Greenland expedition of 1891–92. The lecturer exhibited and explained a number of lantern-slide views illustrating arctic scenery and modes of traveling.

On the conclusion of the address a United States flag, provided for the purpose by Miss Ulrica Dahlgren, was presented by the President on behalf of the Society to Lieut. Peary, who responded feelingly.

April 24, 1891. Special meeting.

Meeting held in the Lecture Room of the National Museum. Attendance, 400.