Geology and Mineralogy. 487 



No. 363. Quality of the Surface Waters of Oregon ; by 

 Walton Van Winkle. Prepared in cooperation with the State 

 of Oregon, John W. Lewis, State Engineer. Pp. 137; 2 pis., 

 lfig. 



No. 364. Water Analyses from the Laboratory of the United 

 States Geological Survey; tabulated by F. W. Clarke, Chief 

 Chemist. Pp. 40. 



The Publications of the United States Geological Survey (not 

 including Topographic Maps). July, 1914. Pp. 136. 



3. Minerals of California ; by Arthur S. Eakle. Califor- 

 nia State Mining Bureau, Bulletin No. 67, F. McN. Hamilton, 

 State Mineralogist. Pp. 226. San Francisco, 1914. — The great 

 extent of the State of California, and the varied character of its 

 mineral products, makes a summary as to the various mineral 

 species which it contains a matter of particular interest. The 

 first list of California minerals was published nearly fifty years 

 ago by Professor W. P. Blake, and included seventy-five species. 

 Twenty years later this work was repeated by the State Mineralo- 

 gist, Mr. Henry G. Hanks. Recent years have served to develop 

 and make known the mineral riches of the State, and the present 

 list by Dr. Eakle enumerates 325 well-recognized species. The 

 localities in the southern counties where gem tourmalines and 

 other important minerals have been exploited, deserve special 

 mention, while the borate deposits have also yielded much that is 

 interesting and new. Besides these 7 there is the great mineral 

 wealth of the central part of the State, and the various species 

 occurring in their ore deposits. This volume contains in addition 

 to the list of species, with the localities at which they occur and 

 many special points of interest about them, a chapter giving the 

 mineral distribution by counties, and also a very complete bibli- 

 ography of California minerals. 



4. Gems and Precious Stones in 1913. — The chapter on this 

 subject, by Douglas B. Sterrett, forming pp. 649-708 of Part 

 II of the Mineral Resources of the United States for 1913, has 

 recently been issued. The general results of the year's work are 

 summarized as follows : 



" The precious and semiprecious stone mining industry of the 

 United States in 1913 was marked by a fairly large output of 

 sapphire, a real advance in the work of testing the Arkansas dia- 

 mond field, a greater activity in the Nevada opal field, and by a 

 decrease in the output of the majority of the other gem minerals 

 mined. The sapphire came chiefly from Montana and consisted 

 of both blue and varicolored gems and culls for mechanical pur- 

 poses. In Arkansas one diamond-washing plant was in operation 

 about three months and recovered several hundred diamonds, and 

 the construction of another plant was practically completed. 

 Many new claims were located in the Nevada opal field, develop- 

 ment of which, along with those previously opened, resulted in a 

 fairly large output of beautiful gems. Prospecting work at the 

 emerald mine near Shelby, N. C, was continued during the first 



