*?i?rCHF-' 



VOLUME 17 

 NUMBER 1 

 JA:N^UA11Y 1914 



OONTAININO 



Notes on the Geologic History of Platanus 



By Edward W. Berry. 1 



Rainfall as a Determinant of Soil Moisture 



By Forrest Shreve 9 



Books and Current Literature 27 



Notes and Comment 30 



PUBLISHED MONTHLY 



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2419-21 York Road 



baltimore, md. 



EDITORIAL OFFICE 



TUCSON. ARIZONA 



Entered as second-clasa matter March 9, 1912, at the post oflBce at Baltimore, Maryland, under the Act of July 19. 1894 



