224 RECENT PUBLICATIONS 



— Sproat, Ira E. Refining and Utilization of Georgia Kaolins. [U.S. Depart- 

 ment of the Interior, Bureau of Mines, Bulletin 129. Washington, 191 7. 



— Stone, R. W. Gypsum in 1916. [U.S. Geological Survey, Mineral Re- 

 sources of the United States, 1916, Part II: 17. Washington, 191 7.] 



. Gypsum Products; Their Preparation and Uses. [U.S. Department 



of the Interior, Bureau of Mines, Technical Paper 155. Washington, 

 1917.] 



. Salt, Bromine, and Calcium Chloride in 1916. [U.S. Geological 



Survey, Mineral Resources of the United States, 1916, Part II, pp. 213-21. 

 Washington, 191 7.] 



. Sand and Gravel in 1916. [U.S. Geological Survey, Mineral Re- 



sources of the United States, 1916, Part II: 23. W^ashington, 1918.] 

 — Storm, C. G. The Analysis of Permissible Explosives. [U.S. Department 



of the Interior, Bureau of Mines, Bulletin 96. Washington, 1916.] 

 — Storm, C. G., and Cope, W. C. The Sand Test for Determining the 



Strength of Detonators. [U.S. Department of the Interior, Bureau of 



Mines, Technical Paper 125. Washington, 1916.] 

 — SuTER, Henry. Descriptions of New Tertiary Mollusca Occurring in New 



Zealand, Accompanied by a Few Notes on Necessary Changes in Nomen- 

 clature. Part I. New Zealand Geological Survey. [Wellington, 1917.] 

 — ^Thompson, J. W. Abstracts of Current Decisions on Mines and Mining, 



Reported from January to April, 1916. [U.S. Department of the Interior, 



Bureau of Mines, Bulletin 126. Washington, 1916.] 

 . Abstracts of Current Decisions on Mines and Mining, Reported from 



September to December, 1916. [U.S. Department of the Interior, Bureau 



of Mines, Bulletin 147. Washington, 1917.] 



Abstracts of Current Decisions on Mines and Mining, Reported from 



May to August, 191 7. [U.S. Department of the Interior, Bureau of 



Mines, Bulletin 159. Washington, 191 7.] 

 — TuRP, J. S. Peat in 1916. [U.S. Geological Survey, Mineral Resources of 



the United States, 1916, Part II: 20. W^ashington, 1917.] 

 — Tyrrell, J. B. Frozen Muck in the Klondike District, Yukon Territory, 



Canada. Transactions of the Royal Society of Canada, Series III, Vol. 



XL [Ottawa, 1917.] 

 — U.S. Geological Survey. Hydraulic Conversion Tables and Convenient 



Equivalents. Water-Supply Paper 42 5-C. [Washington, 191 7.] 

 — U.S. Geological Survey. Profile Surveys in the Colorado River Basin in 



Wyoming, Utah, Colorado, and New Mexico, Prepared under the Direc- 

 tion of W. H. Herron, Acting Chief Geographer. Water-Supply Paper 



396. [Washington, 1917.] 

 — U.S. Geological Survey. Thirty-eighth Annual Report of the Director. 



[Washington, 1918.] 



