154 A Bibliography of the Geology, etc., of California. 



Frech, Fritz. Lethaea geognostica. I Theil, Lethsea palse- 

 ozoica Entwickelung und Verbreitung des Palaeozoicum, 

 2 Bd. 4 Lieferung Die Dyas. Stuttgart, 1902. 

 Dyas of California, pp. 515, 661 ; Trias, p. 474. 



II Theil, Das Mesozoicum. I Heft Trias. Stuttgart, 



1903. 



Fremont and Emory. Notes of travel in California, compris- 

 ing the prominent geographical, agricultural, geological, 

 and mineralogical features of the country; also the route 

 to San Diego, in California, including parts of the Ar- 

 kansas, Del Norte, and Gila Rivers. Dublin, 1849. 

 311 pp. 



Frignet, Ernest. La Calif ornie Histoire— Organisation, 

 Politique et Administrative, Legislation, Description, 

 Physique et Geologique, Agriculture, Industrie, Com- 

 merce. Paris, 1866. 471 pp. 



Livre 3, Chapter I, treats of the geology. 



Frost, John. History of the State of California. Auburn, 

 1850. 508 pp. 



Chapter XIII treats of the mineralogical and other characteris- 

 tics of gold, etc. 



Geology of California, the supply of silver and gold, tract. 

 19 pp. (N. Amer. Kev., vol. 75, 1852, p. 277.) 



Gilpin, William. The central gold region; the grain, pas- 

 toral, and gold regions of North America, with some new 

 . views of its physical geography; and observations on the 

 Pacific Railroad. Philadelphia, 1860. 194 pp. maps. 



Gold mines and mining in California. A new gold era dawn- 

 ing on the State; progress and improvements made in 

 the business ; perfected methods ; progress and machinery ; 

 vast extent of auriferous territory; rich and varied char- 

 acter of deposit; a country abounding with elements of 

 success; grand field for the profitable investment of the 

 world's surplus capital. San Francisco, 1885. 



Under the general heading of Hydraulic Mining, pp. 63-82, the 

 author gives a few geological notes on the Pliocene rivers. On p. 

 333, a short account of the auriferous deposits peculiar to Califor- 

 nia. The gold bluffs and beaches are given, with a description of 

 those of Humboldt County. 



