PROCEEDINGS 



OF THE 



CALIFORNIA ACADEMY OF SCIENCES 



Fourth Series 



Vol. V, No. 6, pp. 163-193, Plates 16-19. December 31, 1915 



VI 



Tertiary Deposits of Northeastern Mexico 



BY 

 E. T. DUMBLE 

 Chief Geologist Southern Pacific Company 



SAN FRANCISCO 



PUELISHEn BY THE ACADEMY 

 1915 



