29 
12—Karthquakes in California during 1858, 1859 and 1860; Proc. Cal. 
Acad. Sci., vol. 2, pp. 39 and go, 1859-60. 
13—Earthquakes in California in 1863 and 1864; Proc. Cal. Acad. Sci., 
vol. 3, p: 131, 1864. 
14—Earthquakes in California from 1800 to 1864; Proc. Cal. Acad Sci., 
vol. 3, p. 131, 1864. Also published as a pamphlet at San Fran- 
cisco 1864, 26 pp. 
15—Earthquakes in California during 1864; Proc. Cal. Acad. Sci,, vol. 
Bupa LOO ISOS. 
16—Karthquakes in California during 1865; Proc. Cal. Acad. Sci, vol. 
3, p. 239, 1866. 
By resolution of the State Senate, passed March 26, 1853, Dr. Trask 
was called upon for such information as he may possess relative to the 
Geology of California and productive resources of the State. This re- 
port, of which only 2,000 copies were printed, is entitled: 
1—Report of 1853, Geology of the Sierra Nevada or California Range, 
by John B. Trask, Sacramento, 1853, 31 pp. 
It contains a sketch of the Geology and Mineral resources of the Kastern 
valleys of the Sacramento and San Joaquin, and to the Coast line 
within 41st and 42nd degrees of north latitude, from personal ob- 
servations made during the years 1850-52. 
Reviewed Mining Mag. 1853, vol. 1, pp. 6-23. 
2—Report on the Geology of the Coast Mountains, embracing their Agri- 
cultural resources and Mineral productions, also portion of the 
Middle and Northern Mining Districts, by Dr. John B. Trask, 
State Geologist, Senate Doc. No. 14, Sacramento, 1855, 95 pp. 
This report contains a description of the physical geography 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 the San Bernardino Moun- 
tains, Stratified rocks of the San Bernardino chain of Los Angeles. 
Artesian borings. Soil and productions of Los Angeles. Mineral pro- 
ductions of Los Angeles. Country north of the American River. 
Mineral district of the Upper Sacramento Valley. Geology of the 
northern mountains. Local geology of the Northern Coast Mountains. 
Carboniferous limestone of the eastern part of Shasta County. Trinity 
County. Structure of the Sacramento Valley. Tertiary rocks and 
other deposits of the Sierra Nevada. Placer Mining. Quartz veins. 
Quartz Mines, with description of the mines and statistics. 
3—Report on the Geology of the Coast Mountains and part of the Sierra 
Nevada, embracing their industrial resources in agriculture and 
mining, by John B. ‘Trask, State Geologist, Assembly Doc. No. 9, 
1854, 92 pp. 
Contains a description of the Geology of the Monte Diablo range. Salinas 
Valley, from Point Pinos to the Nacimiento River. Santa Cruz Moun- 
tains. Structure of the valleys of the Sacramento and San Joaquin. 
