GRAY'S NEW MANUAL 
OF BOTANY SEVENTH 
EDITION 
Thoroughly revised and largely rewritten, by BENJAMIN 
LINCOLN ROBINSON, Ph.D., Asa Gray Professor 
of Systematic Botany, and MERRITT LYNDON 
FERNALD, S.B., Assistant Professor of Botany, Harvard 
University, assisted by specialists in certain groups. 
Regular edition. Cloth, 926 pages 5 2 -5 
Tourist's edition. Flexible leather, 926 pages 3.00 
AMERICAN botanists, who had been impatiently await- 
ing the revision of this indispensable work, will be de- 
lighted to know that a seventh, completely revised, and 
copiously illustrated edition has now been issued. The re- 
vision has entailed years of work by skilled specialists. No 
effort has been spared to attain the highest degree of clearness, 
terseness, and accuracy. The plant families have been re- 
arranged in a manner to show the latest view of their affin- 
ities, and hundreds of species have been added. The synonomy 
is copious, and the ranges are stated in considerable detail. 
^j The nomenclature has been brought into thorough accord 
with the important international rules recently established a 
feature of great significance. Indeed, the Manual is the only 
work of its scope which in the matter of nomenclature is free 
from provincialism and rests upon a cosmopolitan basis of in- 
ternational agreement. Nearly a thousand figures, specially 
designed for this edition, have been added, and scores of brief 
and lucid keys have been introduced in a manner which 
greatly simplifies the problem of plant identification. The 
work has been extended to include Ontario, Quebec, and the 
maritime provinces of Canada. 
AMERICAN BOOK COMPANY 
