THE 
BoTANICAL GAZETTE 
September ro1rr 
Editor: JOHN M. COULTER 
CONTENTS 
A Preliminary Report on the Yearly Origin and Dis- 
semination of Puccinia graminis + Frederick J. Pritchard 
Evaporation and Plant Succession George Damon Fuller 
The Tetranucleate Embryo Sac of Clintonia . Wilson Smith 
The Embryo Sac of Physostegia Lester W. Sharp 
The Brazil Nut W. J. Young 
Briefer Articles 
An Imbedding Medium for Brittle or Woody Tissues H. M. Benedict 
te Current Literature iz 
* 
The University of Chicago Press 
x CHICAGO, ILLINOIS 
THE CAMBRIDGE eae tee London jae Edinburgh 
bree WESLEY & SON, London 
H. STAUFFER, Leipzig 
THE ico: aacoenieak Tekyo, Osaka, Kyoto 
