RECENT PUBLICATIONS 
—Academy of Science and Letters of Sioux City, Iowa, for 1905-6, Proceedings 
of the. Volume II. [Sioux City, 1906.] 
—Acassiz, A. Report of the National Academy of Sciences for the Year. 1905. 
[Washington, 1906.] 
Reports on the Scientific Results of the Expedition to the Eastern Tropical 
Pacific, in Charge of Alexander Agassiz, by the U. S. Fish Commission 
Steamer “‘Albatross,”’ from October, 1904, to March, 1905, Lieut.-Com- 
mander L. M. Garrett, U. S. N., Commanding. V. General Report of the 
Expedition. [Memoirs of the Museum of Comparative Zoélogy at Harvard 
College. Vol. XX XIII. Cambridge, 1906.] 
—American Institute of Mining Engineers, Transactions of the. Vol. XXXVI. 
Containing the Papers and Discussions of 1905. [New York City, 1906.] 
—Ami, H. M. Bibliography of Canadian Geology and Paleontology for the 
Year 1905. [From the Transactions of the Royal Society of Canada, Second. 
Series, 1906-7, Volume XII, Section IV, Geological and Biological Sciences. 
Ottawa, 1906.] 
—ANDREWS, B.A., E. C. Nee dena [Department of Mines and Agri- 
culture, Geclogical Survey, New South Wales, Mineral Resources, No. 11. 
Sydney, 1906.] 
—ARNOLD, R. Geological Reconnaisance of the Coast of the Olympic Peninsula, 
Washington. [Bulletin of the Geological Society of America, Vol. XVII, 
pp. 451-68, Pls. 55-58. Rochester, September, 1906.] 
The Tertiary and Quaternary Pectens of California. Department of 
the Interior, U. S. Geological Survey, Professional Paper No. 47, Series C, 
Systematic Geology and Paleontology, 76. Washington, 1906.] 
—ASHLEY, G. H., and Gienn, L. C. Geology and Mineral Resources of 
Part of the Cumberland Gap Coal Field, Kentucky. [U. S. Geological 
Survey, Professional Paper No. 49; Series A, Economic Geology, 64; Series 
B, Descriptive Geology, 78. Washington, 1906.] 
—Baker, F. C. A Catalogue of the Mollusca of Illinois. [Bulletin of the 
Illinois State Laboratory of Natural History, Vol. VII, article vi. Urbana, 
September, 1906.] 
—Baker, M. Geographic Dictionary of Alaska. [U. S. Geological Survey, 
Bulletin No. 299; Series F, Geography, 52. Washington, 1906.] 
—Baker, M. B. Clay and the Clay Industry of Ontario. [Report of the 
Bureau of Mines, 1906, Vol. XV, Part II. Toronto, 1906.] 
—Batt, S. H. Pre-Cambrian Rocks of the Georgetown Quadrangle, Colorado. 
[From The American Journal of Science, Vol. XXI, May, 1906.] 
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