PROCEEDINQS 



OF THK 



CALIFORNIA ACADEMY OF SCIENCES 



Third Series 

 Geology Vol. I, No. 9 



The Pleistocene Geology of the South 



Central Sierra Nevada with Especial 



Reference to the Origin of 



Yosemite Valley 



BY 



Henry Ward Turner 



With Nine Plates 



Issued December i, igoo 



SAN FRANCISCO 

 Published by the Academy 

 1900 



