Vol. I 
FEBRUARY, 1914 
No. 2 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAL SOCIETY OF AMERICA 
CONTENTS 
On the mycorhizas of forest trees W. B. McDougall 51 
Notes on the calculation of the osmotic pressure of expressed vegetable saps. 
J. Arthur Harris and Ross Aiken Gortner 75 
The pyrenoid of Anthoceros „. ...... F. McAllisxe^ 79 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC GARDEN 
At 41 North Queen Street, Lancaster, Pa. 
Application made for entry as second class matter at the Post Office at Lancaster, Pa. 
