Puhlicatious of the State of California. 27 



Ninth Annual Report of the State Mineralogist, for the year 

 ending December 1, 1889. Sacramento, 1890. 352 pp. 

 and 34 pi. 



This report contains an article on Santa ("l;ir;i County, by A. H. 

 Weber ; The geology of San Nicolas Island, by Dr. Stephen Bowers ; 

 The auriferous gravels of California, geology of their occurrence 

 and methods of their exploitation, by John Hays Hammond ; San 

 Diego County, by W. A. Goodyear ; Santa Cruz Island, by W. A. 

 Goodyear ; Stray notes on the geology of the channel islands, by 

 Dr. L. G. Yates ; The mollusca of the channel islands of California, 

 by Dr. L. G. Yates ; Reports on Los Angeles County, bj' E. B. 

 Preston, and San Bernardino County, by James H. Grossman ; The 

 value of fossils as indications of important mineral products, by Dr. 

 J. G. Cooper ; Report on clays, by W. D. .Johnston ; etc. 



Tenth Annual Report of the State Mineralogist, for the year 

 ending December 1, 1890. Sacramento, 1890. 981 pp., 

 maps and plates. 



This report contains a geological map of the State, with the fol- 

 lowing special reports relating to geology, viz. : 



Geology of the Mother Lode region ; by H. W. Fairbanks. 



Geological features of Placer County, pp. 414-418. 



Geology of Nevada County, p. ^68. 



Geology of the Colorado Desert; by C. R. Orcutt. pp. 899-919. 



Geology of Trinity County, p. (395. 



Geology of Orange County, pp. 399-409. 



Fossils of the Carboniferous period, p. 917. 



Fossils of Orange County, pp. 407-408. 



Fossils of Ventura County, p. 702. 



List of Cretaceous fossils in Santa Ana Mountains, Orange 

 County, p. 400. 



Mining of gold ores in California ; by J. H. Hammond, pp. 852- 

 882. 



Gold extraction by potassium cyanide ; by Wm. D. Johnston, pp. 

 988-942. The State Mining Bureau in this report was among the 

 first in the United States to investigate the merits of the cyanide 

 process. 



\\'ith other reports containing geological information. 



Catalogue of the State Museum of California, vol. 4, being the 

 collection made by the State Mining Bureau from ]\Iarch 

 31, 1887, to August 20, 1890. Sacramento, 1890. 261 pp. 



Catalogue of the Librarj^ of the California State Mining Bu- 

 reau, San Francisco, September 1, 1892. Sacramento, 

 1892. 149 pp. 



