THE 
BOTANICAL GAZETTE 
September 1I9r0 
Editor: JOHN M. COULTER 
CONTENTS 
Some Effects of a Harmful Organic Soil Constituent 
Oswald Schreiner and J. J. Skinner 
| is Observations on Catalase Chas. 0. Appleman _ 
Twin stad Ustte and velutina) and Their Sees 
-.. Distincti k M. Andrews 
A ‘An Eocene dhcp, in Georgia and the Indicated Physical 
a Condi Edward W. Berry 
3 Notes on xy Sex of the Gametophyte of Onoclea bad ea 
Ey - Opteri d M. Mottier 
| ‘Briefer Articles 
a Az Atmograph W. L. Eikenberry 
_ The Sporangium of Lycopodium pithyoides Alma G. Stokey 
The Botanical Congress at Brussels 
a W. G. Farlow and George F. Atkinson 
Current Literature 
CHICAGO and NEW YORE 
“William Werley and Behe ieee bo 
ag : ‘ % F3 
