Regular Meeting, May 1st, 1865.
President in the chair.
Ten members present: Messrs. Kennicott, Dall and other gentlemen connected with the Russian American Telegraph Expedition as visitors.
Donations to the Cabinet: Specimens of native copper and native silver from the Copper Falls Mine, Keewenaw Point, Lake Superior, presented by Mr. Stearns.
Donations to the Library: Four volumes of the Congressional Globe: Finance Report, 1864; Report on the Foreign and Domestic Commerce of the United States; Patent Office Report, (Agriculture,) 1863; from the Hon. John Conness. Embryology of the Star Fish, by Alexander Agassiz, presented by the author; Annual Report of the Museum of Comparative Zoology of Cambridge; Proceedings of the Essex Institute, Vol. III, 1860-63; Silliman’s Journal for March, 1865; Proceedings of the American Academy of Arts and Sciences.
The following was received from Prof. W. H. Brewer, in reference to the occurrence of fossils in the auriferous slates of California: