CONTENTS 



PAGE 



No. 1. The Franciscan Sandstone, by E. F. Davis 1 



No. 2. The San Lorenzo Series of Middle California. Stratigraphic and 



Palaeontologic Study of the San Lorenzo Oligocene Series of 



the General Region of Mount Diablo, California, by Bruce L. 



Clark 45 



No. 3. The Radiolarian Cherts of the Franciscan Group, by E. F. Davis .. 235 

 No. 4. A Cestraciont Spine from the Middle Triassic of Nevada, by Pirie 



Davidson 433 



No. 5. Tertiary Mammalian Faunas of the Mohave Desert Region, by 



John C. Merriam 437a 



Index 5S7-596 



