Vill DECEMBER 1899 _ No. 6 
THE 
EDITORS 
M. COULTER, Zhe University of Chicago, Chicago, Ill 
CHARLES R. BARNES, Zhe University of Chicago, Chicago, Ill 
J. C. ARTHUR, Purdue University, Lafayette, Ind. 
ASSOCIATE EDITORS 
MIR DeCANDOLLE FRITZ NOL 
Geneva Ceri Ke Bonn 
ONT VOLNEY M. SPAL na 
University of Padua Un ert 3 F Michigan 
ENG ROLAND THAXTE 
University of Berlin Harvard icaect 
VIGNARD WILLIAM TRELEASE Zs 
LE tole de Pharmacie Parts Mi rig ze sie Garden % 
A. HARPER H. MARSHALL 
<i 3. of Wisconsin Univer ra 
SUMURA EUGEN. WARMIN ah 
aes University, Tokyo ew of Copenhagen 
VEIT WITTROCK 
Royal Academy of Sciences, Stockholm 
CHICAGO, ILLINOIS 
“Pudtisne bp the Gnibversity of Chicago 
Che Aniversityp of Chicage press 
COPYRIGHT 1899 BY THE UNIVERSITY OF CHICAGO 
ae Cambridge Ae 
