104 REVIEWS 



of products, none of which approaches in value the amount recorded 

 for coal. 



Especial importance is attached to the quantity of products shipped 

 from mines and works, the home consumption and the foreign trade. 



A. D. B. 



Proceedings of the American Mining Congress. Sixteenth Annual 

 Session, Phoenix, Arizona, December, 1914. Denver, 1915. 

 Pp. 239. 

 Contains a detailed stenographic report of the meetings, along with 

 the text of seventeen papers and addresses presented at the session. 



Most of these papers bear on the subject of mining legislation, and 

 the broader aspects of the economics of the mining and allied industries. 

 As usual, conservation comes in for its share of discussion. 



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The Turquois. By Joseph E. Pogue. Memoirs of the National 

 Academy of Sciences, Vol. XII, third memoir. Washington, 

 1915. Pp. 207, pis. 22, figs. 5. 

 The subtitle reads, "A Study of Its History, Mineralogy, Geology, 

 Ethnology, Archaeology, Mythology, Folklore, and Technology." 



The work is admirably adapted to the general reader as well as to the 

 mineralogist and geologist. A large portion is devoted to the historical 

 and ethnological study, which is of general interest. Numerous illus- 

 trations illuminate the text. 



The description of all of the known producing localities is of interest 

 to the geologist and mineralogist. 



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Summary Report of Canadian Geological Survey. Sessional Paper 

 26, 1914. Pp. 201, maps 3, fig. 1. 

 This report contains 40 short papers by members of the staff of the 

 Canadian Geological Survey. Each article is a brief statement of 

 results of field work in different areas during the 1914 field season. All 

 of these papers will be supplemented later by more detailed reports. 



W. B. W. 



