90 RECENT PUBLICATIONS 



— DiLLER, J. S. Age of the pre-Volcanic Auriferous Gravels in California. [Pro- 

 ceedings of the Washington Academy of Sciences, Vol. VIII, pp. 405, 406* 

 February 13, 1907.] 



— Ellis, R. W. Notes on the Mineral Fuel Supply of Canada. [From the 

 Transactions of the Royal Society of Canada, Second Series, 1906-7, Vol. 

 XII, sec. iv.] 



— Etheridge, Jr., R. Official Contributions to the Palaeontology of South 

 Australia. Nos. 17 to 22. [Supplement to Parliamentary Paper No. 55 of 

 1906; Adelaide, 1907.] 



— Etheridge, Jr., R., and Dun, W. S. Carboniferous and Permo-Carbonif- 

 erous Invertebrata of New South Wales. Vol. II — Pelecypoda. Part i — 

 The Palaeopectens. [Memoirs of the Geological Survey of New South 

 Wales; Palaeontology, No. 5; Sidney, 1906.] 



- -Eve, A. S. On the Relative Activity of Radium and Thorium Measured by 

 the Gamma-Radiation. [From the American Journal of Science, Vol. XXII, 

 December, 1906.] 



The Properties of Radium in Minute Quantities. [From the Philosophical 



Magazine for May, 1905.] 



On the Radioactive Matter in the Earth and the Atmosphere. [From the 



Philosophical Magazine for September, 1906.] 



The Ionization of the Atmosphere over the Ocean. [From the Philosophi- 

 cal Magazine for February, 1907.] 



— Fairchild, H. L. Glacial Waters in the Lake Erie Basin. [New York State 

 Museum, Bulletin 106, Geology 11; Albany, 1907.] 



— Fenneman, N. M., and Gale, Hoyt S. The Yampa Coal Field, Routt 

 County, Colorado. With a Chapter on the Character and Use of the Yampa 

 Coals, by Marius R. Campbell. [U. S. Geological Survey, Bulletin No. 297, 

 1906.] 



— FouRNiER, E. L'Hypothese des grandes nappes charriees. [Extrait du Bul- 

 letin de la Societe Beige de Geologie, de Paleontologie, et d'Hydrologie; 

 Tome XX, 1906; Bruxelles, 1907.] 

 -Les grands charriages horizontaux et le role de I'hypothese en Tectonique. 



[Extrait des Jeunes Naturalistes, No. 426; Paris, 1906.] 

 -Fuller, Myron Leslie. Our Greatest Earthquakes. [From The Popular 



Science Monthly, July, 1906.] 

 Underground Water Investigations in the United States. [From Economic 



Geology, Vol. I, No. 6, June, 1906.] 

 Hydrologic Work of the U. S. Geological Survey in the Eastern United 



States. [From Proceedings of the International Geographical Congress, 



1904, pp. 509-14.] 

 Geology of Fishers Island, New York. [Bulletin of the Geological Society 



of America, Vol. XVI, pp. 367-90; Rochester, June, 1905.] 

 Conditions of Circulation at the Sea Mills of Cephalonia. [Bulletin Geo- 

 logical Society of America, Vol. XVIII, pp. 221-32; New York, May, 1907.] 



