Donations to the Cabinet: Fossils from Purissima, by Mr. Yale.
Donations to the Library: Memoirs of the National Academy of Sciences, Vol. I, 4to, Washington, 1866, and Annuals of the same for 1863, 1864, 1865, and 1866.
The subject of the distribution of forest vegetation was discussed by Messrs. Bloomer and Cooper.
Dr. H. Gibbons made some remarks on the distribution of clear and cloudy days throughout the year at San Francisco.
Mr. Stearns exhibited a species of Pholas, and made some remarks on its methods of boring. Dr. Cooper made some observations on the same subject.
Regular Meeting, September 2d, 1867.
President in the chair.
Twenty members present.