30 
Review of the geological changes in the Coast Mountains and Monte 
Diablo ranges. Classification of the rocks of the Coast Mountains and 
Monte Diablo ranges. Position and relation of the Volcanic rocks of 
the Tertiaries. Volcanic rocks preceding the Tertiary era. Most 
recent volcanic rocks of the Coast Mountains. Changes of level and 
river terraces. Soils of the Santa Clara valley and shores of the Bay 
of San Francisco. Valley of the Salinas. Soils of the Salinas, Pajaro 
Valley, Livermore Valley. Mineral resources of the Coast Mountains. 
Mineral districts, embracing parts of the counties of Nevada, Placer, 
El Dorado and Calayeras. Quartz veins and their relative age in Cali- 
fornia. Character and position of the older veins below the surface. 
Present government of metallic veins. Description of the mines, with 
a list of gold mines. 
4—Report on the Geology of Northern and Southern California, embrac- 
the Mineral and Agricultural resources of those sections, with 
Statistics of the Northern, Southern and Middle Mines, by Dr. 
John B. Trask, Assembly Doc. No. 14, Session of 1856, 66 pp. 
Contains a description of the Physical geography of the Coast Mountains, 
lying 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. Description of mines, ete. 
Analyses of Saline waters from Lick Springs, Shasta County. Gold 
mines in operation in 1855. Table of altitudes. 
5—Report on the Geology of the Sierra or California Ranges, by John B. 
Trask; Pharmaceutical Journal, vol. 14, 1855, pp. 20-24. 
