No. 10 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
A brief sketch of the life and work of Charles Edwin Bessey 
Raymond J. Pool 505 
Heredity and mutation as cell phenomena. R. Ruggles Gates 519 
The relation between vegetative vigor and reproduction in some Sapro- 
legniaceae Adrian J. Pieters 529 
Index to Volimie II i^. 577 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Entered as oecond-dass matter February 31, 1914. at the post office at Lancaster, Peonsyliraiiia, 
under the act of March 3, xS79w 
