Bulletin No. 309 
Sphps J A ' Economic Oology, 91 
es \ B, Descriptive Geology, 112 
DEPARTMENT OF THE INTERIOR 
UNITED STATES GEOLOGICAL SURVEY 
l 
CHARLES D. WALCOTT, Director 
THE 
SANTA CLARA VALLEY, PUENTE HILLS 
AND LOS ANGELES OIL DISTRICTS 
SOUTHERN CALIFORNIA 
BY 
GEORGE HOMANS ELDRIDGE 
if 
AND 
RALPH ARNOLD 
> ) 
) i ^ 
WASHINGTON 
GOVERNMENT PRINTING OFFICE 
19 0 7 
