88 RECENT PUBLICATIONS 



—Tough, F. B. Methods of Shutting Ofif Water in Gas and Oil Wells. [U.S. 



Bureau of Mines, Bulletin 163. Washington, 1918.] 

 — Tyrrell, G. W. The Whangie and Its Origin. Scottish Geographical 



Magazine, XXXII, 14-24. 1916. 

 — ■ . The Petrography of Arran. Geological Magazine, New Series, 



Decade VI, Vol. Ill, pp. 193-96. [London: Dulan & Co., 1916.] 



Further Notes on the Petrography of South Georgia. Geological 



Magazine, New Series, Decade VI, Vol. Ill, pp. 435-41. [London: 



Dulan & Co., 1916.] 

 — ^Waring, 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, 191 8.] 

 — Washington Academy of Sciences, Journal of. Vol. VIII. 

 — ^Wells, R. C. Sodium Salts in 1917. [U.S. Geological Survey, Mineral 



Resources of the United States, 191 7, Part II: 23. Washington, 1919.] 

 — ^Wilson, M. E. Timiskaming County, Quebec. [Canada Department of 



Mines, No, 1695, Memoir 103, Geological Survey, No. 86. Geological 



Series. Ottawa, 1918.] 

 — ^WooD, H. O. A Further Note on Seismometric Bookkeeping. Seismo- 



logical Society of America, Bulletin, Vol. VII, No. 3. [Hawaiian Volcano 



Observatory, 191 7.] 



