Volume LV Wumber 6 . 
THE 
BoTANICAL GAZETTE 
Editor: JOHN M. COULTER 
June I91r3 
Toxic Inorganic Salts and Acids as Affecting Plant Growth 
Chas. B. Lipman and Frank H. Wilson 
The Transpiration of Apple Leaves Infected with Gymno- 
sporangium Howard S. Reed and J. S. Cooley 
Undescribed Plants from Guatemala and Other Central 
American Republics. XXXVI John Donnell Smith 
Vegetative Reproduction in an Ephedra W. J. G. Land 
Protoplasmic Contractions Resembling Plasmolysis Which 
Are Caused by Pure Distilled Water W. J. V. Osterhout 
Reproduction by Layering in the Black Spruce George D. Fuller 
Briefer Articles 
Thomas How Huron H. Smith 
The Secditie. a Phyllocarpus T. D. A. Cockerell 
Current Literature 
- 
The University of Chicago Press 
CHICAGO, ILLINOIS, U.S.A. 
Agents 
THE CAMBRIDGE UNIVERSITY PRESS, London and Edinburgh 
M WESLEY & SON, London 
: TH. STAUFFER, Leipzig 
THE MARUZEN-KABUSHIKLKAISHA, Tokyo, Osaka, Kyote 
