During the interval between the lst and 2d series two pamphlets of Proceedings were published, 1880-1881, relating to the Jeanette Arctic expedition; also the 2 vols. (8 nos.) of the Bulletin, 1884/1886-1886/1887 Ceased publication with ser.2 vol. 6, 1896 Vol. 1, 1854/57, 2d ed., 1873 During the interval between the lst and 2d series two pamphlets of Proceedings were published, 1880-1881, relating to the Jeanette Arctic expedition; also the 2 vols. (8 nos.) of the Bulletin, 1884/1886-1886/1887 In 1897 split into: Proceedings of the California Academy of Sciences. 3d ser.: Botany; Proceedings of the California Academy of Sciences. 3d ser.: Geology; Proceedings of the California Academy of Sciences. 3d ser.: mathematics-physics; and Proceedings of the California Academy of Sciences. 3d ser.: Zoology