Ammonites in the Auriferous Slates of California.
BY WILLIAM P. BLAKE.
Ammonites occur in the gold-bearing slates of Bear Valley, Mariposa County, in addition to belemnites and other fossils already noted. The specimen I have seen is a cast, somewhat distorted by pressure, but apparently similar to the species from the slates on the American River, which I brought to the notice of the academy last year.
Adjourned Annual Meeting, January 8th, 1866.
President in the chair.
Twelve members present.
The Curator of Conchology and the Librarian made verbal reports.
The academy then proceeded to the election of officers for the year, and the following persons were chosen.