F>ROCKEDI]MQS 



OF THK 



CALIFORNIA ACADEMY OB^ SCIENCES 



Third Series 



Geology Vol. II, No. 2 



A Stratigraphic Study 



in the 



Mount Diablo Range of California 



BY 



Frank M. Anderson 



Curator of the Department of Invertebrate Paleontology 



» With Twenty-three Plates 



Issued December 4, igo^ 



SAN FRANCISCO 



Published by the Academy 



1905 



