REFERENCES 



Under this heading it Is proposed to Include, by author, title, and citation, references to all 

 scientific papers published in or emanating from Washington. It is requested that authors cooperate 

 with the editors by submitting titles promptly, following the style used below. These references are 

 not intended to replace the more extended abstracts published elsewhere in this Journal. 



CHEMISTRY 



Clarke, Frank Wigglesworth. The data of geochemistry (3d edition). U. S. 

 Geological Survey Bulletin 616. Pp. 821. 1916. 



GEOLOGY 



U. S. Geological Survey. Shorter contributions to general geology, 1915. U. S. 

 Geological Survey Professional Paper 95. Pp. 120. 1916. 

 Contains the following papers: 

 Hicks, \V. B. The composition of muds from Columbus Marsh, Nevada, pp. 



1-11. 

 Atwood, W. W. Eocene glacial deposits in southwestern Colorado, pp. 13-26. 

 Lee, W. T. Relation of the Cretaceous formations to the Rocky Mountains 



in Colorado and New Mexico, pp. 27-58. 

 Capps, S. R. An ancient volcanic eruption in the upper Yukon Basin, pp. 



59-64. 

 Hicks, W. B. Evaporation of potash, brines, pp. 65-72. 

 Berry, E. W. Erosion intervals in the Eocene of the Mississippi embay ment, 



pp. 73-82. 

 Van Orstrand, C. E., and Dewey, F. P. Preliminary report on the diffusion 



of solids, pp. 83-96. 

 Smith, P. S. Notes on the geology of Gravina Island, pp. 97-105. 

 Cooke, C. W. The age of the Ocalla limestone, pp. 107—117.- 



ORNITHOLOGY 



Bailey, F. M. A family of North Dakota marsh hawks. Bird-Lore, 17:431-438, 

 5 figs. November-December, 1915. 



Beal, F. E. L. Food of the robins and bluebirds of the United States. Bulletin of 

 the U. S. Department of Agriculture, No. 171. Pp. 1-31, figs. 1-2. February 

 5, 1915. 



Beal, F. E. L. Food habits of the thrushes of the United States. Bulletin of the 

 U. S. Department of Agriculture, No. 280. Pp. 1-23, figs. 1-2. September 

 27, 1915. 



Cooke, W. W. The migration of North American sparrows. Bird-Lore, 16: 176- 

 178. May- June, 1914; 16: 267-268. July-August, 1914; 16: 351. September- 

 October, 1914; 16: 438-442. November-December, 1914; 17: 18-19. Janu- 

 ary-February, 1915. 



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