376 RECENT PUBLICATIONS 



— ^Wheeler, H. L. (Compiler). A Bibliography on the Roasting, Leaching, 

 Smelting, and Electrometallurgy of Zinc. [Missouri School of Mines and 

 Metallurgy Bulletin, Vol. 4, No. 3. Rolla, 1918.] 



— WiCHMANN, R. Investigaciones Hidrogeologicas en Puerto Deseado y 

 Sus Alrededores (Territorio Nacional de Santa Cruz). Con Motivo 

 de la Provision de Agua al Citado Pueblo. Ministerio de Agricultura de 

 la Nacion. Direccion General de Minas, Geologia e Hidrologia. Boletin 

 No. 20. Serie B (Geologia). [Buenos Aires, 1919.] 



— ^Wilson, A. W. G. Potash Recovery at Cenient Plants. [Canada Depart- 

 ment of Mines, Mines Branch, Bulletin No. 29; No. 507. Ottawa, 1919.] 



— Yale, C. G. Gold, SUver, Copper, Lead, and Zinc in California and Oregon 

 in 191 7. Mines Report. [U.S. Geological Survey, Mineral Resources 

 of the United States, 1917. Part 1: 13. Washington, 1919.] 



— Yale, C. G., and Stone, R. W. Magnesite in 1918. [U.S. Geological 

 Survey, Mineral Resources of the United States, 19 18, Part 11:7. Wash- 

 ington, 1919.] 



