/i}l^2u/<^ f ^/ybofjj/ 



A Magazine of General Botany 



VOLUME 19 

 NUMBER 7 

 JULY, 1916 



CONTAINING 



The Fixation of Free Nitrogen by Certain Fungi 



Charles Oscar Chambers 175 



The Development of the Ovule of Impatiens Pallida Nutt. 



Anna Hall Raitt 195 



Books and Cxirrent Literature 204 



Notes and Comment 209 



PUBLISHED MONTHLY 



OFFICE OF PUBLICATION 

 2419-21 Greenmount Ave. 



BALTIMORE, MD. 



EDITORIAL OFFICE 



TUCSON, ARIZONA 



Ent«r«d as Moond-clasa matter March 9, 1912, at the post office at BaltiinoTe, Marj-Iacd, under the Act of July 18, 1804 



