664 RECENT PUBLICATIONS 



— Simpson, E. S. Sources of Industrial Potash in Western Australia. With 



Two Appendixes, i. Examination of Western Australia Seaweeds for 



Potash and Iodine, by I. H. Boas; 2. Alunite Deposits at Kanowna, by 



T. Blatchford. [Western Australia Geological Survey, Bulletin No. 77. 



Perth, 1919.] 

 — Smith, G. O. Fortieth Annual Report of the Director of the United States 



Geological Survey to the Secretary of the Interior, for the Fiscal Year 



Ended June 30, 1919. [U.S. Geological Survey. Washington, 1919.] 

 — Smith, P. S. Sulphur and Pyrites in 1918. [U.S. Geological Survey, 



Mineral Resources of the United States, 1918, Part II, Sec. 16, pp. 357-77. 



Washington, 1919.] 

 — Stone, R. W. Gypsum in 1918. [U.S. Geological Survey, Mineral 



Resources of the United States, 1918, Part II, Sec. 12. Washington, 1919.] 

 . Sand and Gravel in 1918. [U.S. Geological Survey, Mineral 



Resources of the United States, 1918. Part II, Sec. 13. Washington, 



1919.] 

 — Thompson, D. G. Ground Water in Lanfair Valley, California. [U.S. 



Geological Survey, Water-Supply Paper 450-B. Washington, 1920.] 

 — Thomson, J. A. Secrets of Animal Life. New York: Henry Holt & Co. 



1919. 

 — Wadsworth, J. M. Removal of the Lighter Hydrocarbons from Petroleum 



by Continuous Distillation, with especial reference to plants in California. 



U.S. Bureau of Mines Bulletin 162. Petroleum Technology 45. Wash- 

 ington, 1919. 

 — Walther, J. AUgemeine Palaeontologie. Geologische Fragen in biolog- 



ischer Betrachtung. i. Teil: Die Fossilen als Einschliisse der Gesteine. 



Berlin: Gebriider Borntraeger, W35. Schoneberger Ufer 12 a. 1919. 



Preis: 12 M geh. 

 — ^Ward, L. K. Annual Report of the Director of Mines and Government 



Geologist of South Australia for 1918. Adelaide, 1919. 

 — Washington Academy of Sciences, Journal of the. Vol. 9. [Easton, Pa.: 



211 Church St.] 

 — Wells, R. C. Sodium and Sodium Compounds in 1918. [U.S. Geological 



Survey, Mineral Resources of the United States, 1918, Part II, Sec. 8. 



Washington, 1919.] 

 — Western Australia Geological Survey. Annual Progress Report of the 



Geological Survey for the Year 1917. [Perth, 1918.] 

 — Wisconsin Academy of Sciences, Arts and Letters, Transactions of. Vol. 



XIX, Parts I and II. [Madison, 1918.] 



