354 Whitney's Geology of California, 
th. 
auriferous rocks extends within the chain fr om the 
Tahichipi desert northward to the Kern river, which is sufli- 
mines 1 h 
Basin (‘the Park’”’ of the Pacific R. R. maps); but whether 
“intervals to White river; but north of this there are none 2 
much extent until we reach the San Joaquin. 
n passing north from this last point the metamorphic slates 
rapidly increase in breadth and importance, and before traveling 
thirty miles we reach the great auriferous region of the State, 
which forms a continuous field for more than 200 miles, and 
