THE PROCEEDINGS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



There were printed, from 1898 to the discontinuance of 

 the series in 1911, thirteen volumes of the Proceedings of 

 the Washington Academy of Sciences. The Proceedings 

 consist of original papers, covering a variety of subjects. 

 The volumes contain from 200 to 700 pages and separates 

 of each paper, to a limited number, are also available. 

 A Ust of the titles with prices will be furnished on request 

 by the Treasurer of the Academy, Mr. Alfred H. Brooks, 

 Geological Survey, Washington, D. C., by William Wesley 

 & Son, 28 Essex Street, Strand, London, or Mayer and 

 Muller, Prinz Louis-Ferdinand Str., Berlin. 



