GEOLOGICAL AND NATURAI^ HISTORY SURVEYS. 29 



Livermore Valley; mineral resources of the coast mountains; mineral 

 districts, embracing parts of the counties of Nevada, Placer, El 

 Dorado, and Calaveras; quartz veins, and their relative age in Cali- 

 fornia; character and position of the older veins below the surface; 

 present government of metallic veins; descriptions of mines, with 

 list of gold mines. 



His second report appeared in 1855, forming Senate Document 

 No. 14, a pamphlet of 94 pages, erititled : Heport on tlie Geology of 

 the Coast Mountains, Embracing their Agricultural Kesources and 

 Mineral Productions, also Portions of the Middle and Northern 

 Mining Districts. It contained a description of the physical geog- 

 raphy of the coast mountains; geology of the coast mountains; 

 Tertiary rocks of the coast mountains ; primitive rocks of the coast 

 mountains; volcanic rocks of the coast mountains; geology of th.e 

 San Bernardino Mountains; stratified rocks of the San Bernardino 

 chain and plains of Los Angeles; extent of the infusorial group; 

 plains of Los Angeles; artesian borings; soils and productions of 

 Los Angeles ; mineral productions of Los Angeles ; country north of 

 the American River; mineral district of the upper Sacramento Val- 

 ley; geology of the northern coast mountains; Carboniferous lime- 

 stone of the eastern part of Shasta County ; Trinity County ; struc- 

 ture of the Sacramento Valley; Tertiary rocks and other deposits 

 of the Sierra Nevada; placer mining; (juartz veins; quartz mines, 

 with descriptions of mines, and statistics. 



The third report, forming Assembly Document No. 14, of the ses- 

 sion of 1856, comprised 66 pages. This contained a description of 

 the physical geography of the region lying in the coast mountains 

 north of the Bay of San Francisco ; geological structure of the coast 

 mountains; mineral character of the primitive rocks of the coast 

 mountains ; soils of Petaluma County ; plains west of the Sacramento 

 River; San Bernardino; geology' of Table Mountain, Tuolumne 

 County ; Carboniferous rocks of the northern district ; salines of the 

 upper Sacramento Valley; Mammoth Mines, Seventy-six, Jamison 

 Creek; descriptions of mines, etc.: analyses of saline waters from 

 Lick Springs, Shasta County; gold mines in operation in 1855, and 

 table of altitudes. 



Expense. — The total expense of the Trask survey would appear 

 to have been the $7,000 appropriated by the legislature of 1853-54, 



SECOND GEOLOGICAL SURVEY UNDER JOSLMT D. WHITNEY, 1860-1873. 



Following the work of Trask, the next official survey of Califor- 

 nia was undertaken by Prof. J, D. Whit?iey. in virtue of the follow- 

 in<r act : 



