CONTENTS 

 Original Papers 



Radiotelegraphy. — The wave front angle in radiotelegraphy. L. W. Austin 101 



Zoology. — The nomenclature of supergeneric names. S. A. Rohwbr 106 



• 



Abstracts 



Ceramic Chemistry 110 



Ceramics 110 



Inorganic Chemistry Ill 



Ornithology Ill 



Physical Chemistry 113 



Proceedings 



Washington Academy of Sciences 114 



Botanical Society 118 



-Scientific Notes and News 123 



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The Academy has on hand a miscellaneous stock of separates of papers 

 from the Proceedings (1898-1911). By authority of the Board of Managers, 

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GEOLOGY 



Becker, George E. vSimultaneous joints. 9 pp., 1 pi $0 . 10 



Becker, George F. A feature of Mayon Volcano. 6 pp., 1 pi 0. 10 



Branner, John C. Results of the Branner-Agassiz Expedition to Brazil. IV. 

 Two characteristic geologic sections on the south coast of Brazil. 18 pp., 

 3 pi 0.15 



Cross, Whitman. The Laramie Formation and the Shoshone Group. 19 pp. 0.15 



DiLLER, J. S. Age of the pre-volcanic auriferous gravels in California. 2 pp. 0.05 



Hayeord, John F. The geodetic evidence of isotasy, with a consideration of 

 the depth and completeness of the isostatic compensation and of the bearing 

 of the evidence upon some of the greater problems in geology. 16 pp 0. 15 



Kindle, Edward M. The callapse of recent beds at Staunton, Virginia. 



15 pp., 5 pi 0. 15 



Merriw,, George P., and Stokes, H. N. A new stony meteorite from 

 Allegan, Michigan, and a new iron meteorite from Mart, Texas. 28 pp., 

 6 pi 0.25 



Stanton, Timothy W. The age and statigraphic relations of the "Ceratops 



Beds" of Wyoming and Montana. 55 pp 0.25 



Walcott, Charles D. Lower Cambrian terrane in the Atlantic Province. 



40 pp., 5 pi • 0.25 



The set of 10 geological papers 1 .00 



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