Vol. VII. FEBRUARY, 1920 Wo. 2 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
Effect on chestnuts of substances injected into their trunks. 
Caroline Rumbold 45 
Subalpine lake-shore regetation in north-central Colorado. 
Francis Ramaley 57 
Some observations on the spore discharge of Pleurage curvicoUa (Wint.) 
Kuntze. J. L. Weimer 75 
Correlation between size of the fruit and the resistance of the tomato skin to 
puncture and its relation to infection with Macrosporium tomato Cooke. 
J. Rosenbaum and Charles E. Sando 78 
PUBLISHED 
PUBLISHED IN COOPERATION WITH THE BOTANIC SOCIETY OF AMERICA 
At 41 North Queen Street, Lancaster, Pa. 
BY THE 
BROOKLYN BOTANIC GARDEN 
Brooklyn, N. Y. 
Entered as iecon(i-class matter February az. 1914, at the post office at Lancaster, Pennaylvania. 
under the act of March 3, 1879 
