3 I2 RECENT PUBLICATIONS 



— Dall, W. H. A Monograph of the Molluscan Fauna of the Orthaulax 

 Pugnax Zone of the Oligocene of Tampa, Florida. [U.S. National Museum 

 Bulletin 90. Smithsonian Institution, Washington, 191 5.] 



— Daly, R. A. Geology of the North American Cordillera at the Forty-ninth 

 Parallel. Parts II and III. [Canada Department of Mines, Geological 

 Survey. Ottawa, 1912.] 



-—Daniels, Joseph. The Coal Fields of Pierce County. [Washington 

 Geological Survey, Bulletin 10. Olympia, 1914.] 



— Darton, N. H. Occurrence of Explosive Gases in Coal Mines. [U.S. 

 Bureau of Mines, Bulletin 72. Washington, 1915.] 



— Denis, T. C. Report on Mining Operations in the Province of Quebec 

 during the Year 1914. [Province of Quebec, Department of Coloniza- 

 tion, Mines, and Fisheries. Mines Branch. Quebec, 1915.] 



— Douglas, G. M. Lands Forlorn. A History of an Expedition to Hearne's 

 Coppermine River. [New York: Putnam, The Knickerbocker Press, 

 1914.] 



— Dowling, D. B. Coal Fields and Coal Resources of Canada. [Canada 

 Department of Mines, Memoir 59, Geological Survey, Geological Series 

 No. 55. Ottawa, 1915.] 



— . Coal Fields of British Columbia. [Canada Department of Mines, 

 Memoir 69, No. 1465, Geological Survey, Geological Series No. 57. 

 Ottawa, 1915.] 



. Coal Fields of Manitoba, Saskatchewan, Alberta, and Eastern 



British Columbia. [Canada Department of Mines, Memoir 53, No. 1363, 



Geological Survey, Geological Series No. 44. Ottawa, 1914.] 

 — Drysdale, C. W. Geology of Franklin Mining Camp, British Columbia. 



[Canada Department of Mines, Memoir 56, No. 1383, Geological Survey, 



Geological Series No. 56. Ottawa, 1915.] 

 —Ells, S. C. Notes on Clay Deposits near McMurray, Alberta. [Canada 



Department of Mines, Mines Branch No. 336, Bulletin 10. Ottawa, 



1915-] 

 — Engineering Magazine, The. Vol. XLIX, No. 4, July, 1915. [140-42 



Nassau Street, New York.] 

 — Eskola, Pentti. On Phenomena of Solution in Finnish Limestones and 



on Sandstone Filling Cavities. [Bulletin No. 36 de la Commission 



Geologique de Finlande. Helsingfors, February, 1913.] 

 . On the Petrology of the Orijarvi Region in Southwestern Finland. 



[Bulletin No. 40 de la Commission Geologique de Finlande. Helsingfors, 



April, 1914.] 

 — Fay, A. H. Production of Explosives in the United States during the 



Calendar Year 1914, with Notes of Coal Mine Accidents due to Explosives. 



[U.S. Bureau of Mines, Technical Paper 107. Washington, 1915.] 



