678 RECENT PUBLICATIONS 
—Stone, R. W. Magnesium. [U.S. Geological Survey, Mineral Resources 
of the United States, 1917. Part I: to. Washington, ro19.] 
Sand and Gravel. [U.S. Geological Survey, Mineral Resources of 
the United States, 1917. Part II: 25. Washington, 1919.] 
—Tuomson, J. A. The System of Animate Nature. Vols. I and II. [New 
York: Henry Holt & Co., 1920. (Price $6.00 net.)| 
—Universo, L’. Anno 1, Num. 2. Marzo-Aprile, 1920. Institute Geo- 
grafico Militare. [Firenza, 1920.] 
—Voct, J. H. L. Om Manganrik Sjgmalm. I Storsjgen, Nordre Odalen. 
[Den Tekniske H¢giskoles Geologiske Institute, Meddelelse Nr. 6. Norges 
Geol. Unders.. Aarbok, rors, VI! Kristiania.|) ~ 
Die Sulfid: Silikatschmelzlésungen. ([Saertryk av Norsk Geologisk 
Tidsskrift. Bind IV. Kristiania, 1917.] 
Die Sulfid: Silikat Schmelzlésungen. I. Die Sulfidschmelzen 
und die Sulfid: Silikatschmelzen. Videnskapsselskapets Skrifter. [I. 
Mat.-Nat. Klasse. 1918. No.1. Kristiania: I Kommission Hos Jacob 
Dybwad. t1or10.] 
—Warinc, G. A. Ground Water in Reese River Basin and Adjacent Parts 
of Humboldt River Basin, Nevada. [U.S. Geological Survey, Water- 
Supply Paper 425-D. Washington, roz9.] 
—WASHBURNE, C. W. The Capillary Concentration of Gas and Oil. [Re- 
printed from Bulletin No. 93, September, 1914, American Institute of 
Mining Engineers. New York, 1914.] 
Oil-Field Brines. [Reprinted from Mining and Metallurgy, No. 164, 
August, 1920, American Institute of Mining Engineers. New York, 
1920.| 
—WE Its, R.C. Sodium Salts. [U.S. Geological Survey, Mineral Resources 
of the United States, 1917. Part II: 23. Washington, 1919.] 
—WestTcaTE, L. G. Deposits of Iron Ore near Stanford, Montana. [U.S. 
Geological Survey, Bulletin 715-F. Washington, 1920.] 
—WuitE, Davin. Contributions to Economic Geology, 1917. Part II. 
Mineral Fuels. [U.S. Geological Survey, Bulletin 661. Washington, 
1919.| 
Shorter Contributions to General Geology, 1917. [U.S. Geological 
Survey, Professional Paper 108. Washington, ro19.] 
Structure and Oil and Gas Resources of the Osage Reservation, 
Oklahoma: Introduction. [U.S. Geological Survey, Bulletin 686-A. 
Washington, rgr1q.| 
—YAaLE, C.G. Gold, Silver, Copper, Lead and Zinc in California and Oregon. 
[U.S. Geological Survey, Mineral Resources of the United States, 1917. 
Part I: 13. Washington, rg19.| 
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