THE 
BOTANICAL GAZETTE 
June roro 
Editors: JOHN M. COULTER and CHARLES R. BARNES 
CONTENTS 
The Effect of Some Toxic Solutions on Mitosis 
Warner W. Stockberger 
The Relation of Hairy. and Cutinized Coverings to 
Transpiration Karl M. Wiegand 
The Morphology of the Peridial Cells in the ethene? 
rank Dunn Kern 
Undescribed Plants from Guatemala and Other Central 
American Republics John Donnell Smith 
Briefer Articles 
A Simple Vaporimeter 
Phylogeny of Plants 
Edgar WN. Transeau 
j. P. Lotsy 
Current Literature 
The University of Chicago Press 
CHICAGO and NEW YORK 
William Wesley and Son, London 
