0 
THE 
August I9ro 
Editor> JOHN M. COULTER ; 
CONTENTS 
The Morphology of the Podocarpineae Mary S. Young 
3 og The Origin of Ray Tracheids in the Coniferae § W-P. Thompson 
On the Relationship between the Length of the Pod and 
_ Fertility and Fecundity in Cercis J. Arthur Harris 
Development of the ade’ Strobilus and rows Ovule 
of Zamia flori idan ances Grace Smith 
~ Onidizing eridee and Their Relation to.‘‘Sap Stain”’ 
: ae in Lum Irving W. Bailey 
Briefer Articles : 
fee 3 va of a Jung-Thoma Sliding Microtome for EB Tr ibunsoil 
x¢ Current Literature 
The University of Chicago Press 
: CHICAGO and NEW YORK ; 
‘William eued and Sen, Londoa 
No. 2 
