Vol. V. 
JULY, 1918 
No. 7 
AMERICAN 
JOURNAL OF BOTANY 
OFFICIAL PUBLICATION OF THE 
BOTANICAJ. SOCIETY OF AMERICA 
CONTENTS 
A new thi'ee-salt nutrient solution for plant cultures. 
B. E. Livingston and W. £. Tottingham 337 
The histology of the phloem in certain woody Angiosperms. 
L, H. MacDaniels 347 
Cell division by furrowing in Magnolia . .Cliff;ord H. Farr 379 
PUBLISHED 
IN COOPERATION WITH THE BOTANICAL SOCIETY OF AMERICA 
BY THE 
BROOKLYN BOTANIC. GARDEN 
At 41 North Queen Street^ Lancaster, Pa* 
Entered as second-class matter February 21, 1914, at the post office at Lancaster, Pennsylvania, 
under the act of March 3,1 879. 
