Vol. VII . 
JANUARY, 1920 
No. 1 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
/ FEB ;^ 5 1120 ' ) 
CONTENTS 
The injection of chemicals into chestnut trees Caroline Rumcold i 
The occurrence and inheritance of sex intergradatit)n in plants. 
Cecil Yampolsky ai 
An apparatus for automatically changing the temperature of a chamber. 
George F. Potter 39 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At. 41 North Queen Street, Lancaster, Pa. 
Entered as tec< 
3nd-clas« matter February 21, 1914, at the post 
under the act of March 187 
office at Lancaster, 1 
9 
PenntylvanU, 
