Il 
ment there is an account of a tour made to the gold regions by Gen. 
Riley, pp. 785-792. 
In 1857, Dr. James Hall, in the U. S. and Mexican Boundary 
Survey, gave a short description of the geology of Southern Califor- 
nia, with a section of lignite bluff near San Diego. 
Captain Aubrey, gives some notes of the route through the gold 
country on the head waters of the San Juan, Salinas, etc., in notes on 
route from near Tejon Pass, through Western New Mexico, and the 
Colorado to Santa Fe, in the fall of 1853. 
In the publication of the Navy Department, House of Rep., Doc. 
206, 42nd Congress, 1872, there is a report on the Mount Diablo coal 
mines of California, by B. F. Isherwood. 
In the reports of Explorations and Survey for a railroad from the 
Mississippi to the Pacific, Volumes 3, 5, 6 and 7, contain geological in- 
formation of California. Vol. 3, contains Jules Marcou’s reports of 
routes explored near the parallel of 35 deg. North Latitude, with notes 
of geology of Los Angeles. 
Vol. V, contains general observations upon the geology of the 
route, 35 and 32 parallels—Geological reports by Wm. P. Blake. 
Chapter 1—San Francisco to San Joaquin River—Chapters 2 and 
3, Fort Miller to Ocoya Creek, ete.; also chapters on the vicinity of 
Tejon, Mojave River, Los Angeles, San Bernardino, Colorado Desert, 
Warner’s, Fort Yuma, San Francisco Bay, ete. 
Prof. Louis Agassiz, describes and figures the fossil fish of Ocoya 
Creek, and Conrad, the fossil shells, including those from San Diego, 
and Monterey County, Colorado Desert, etc. 
Vol. 6, contains reports by John 5. Newberry, on the geology of 
San Francisco, Sacramento Valley, Western range of Sierra Nevada, 
also that of Pitt River and Klamath Basin. The Tertiary fossils col- 
lected were described by T. A. Conrad, from Santa Clara, Monterey 
County, Santa Barbara, etc. 
Vol. 7, contains geological reports by Thomas Antisell—Geology 
of the Coast Range, also geology of the district from San Diego to 
Fort Yuma, etc. 
Reports on Palaeontology, by T. A. Conrad—The fossil shells 
collected in California, by Wm. P. Blake, were also published in a 
pamphlet in 1855; also in final report in Vol. 1 of the Pacific R. R. 
Survey. 
In the reports of the Mineral resources of the States and Terri- 
