Gray's Manual of Botany —NEW EDITION 
An illustrated flora of the Northern United States and Canada east of the 96th 
meridian, By Asa Gray, LL.D., late Professor of Natural History, Harvard Uni- 
versity. Thoroughly revised and largely rewritten by BENJAMIN LINCOLN ROBIN- 
son, Ph.D., Asa Gray Professor of Systematic Botany, and MERRITT LYNDON 
FERNALD, B.B., Assistant Professor of Botany, Harvard University, assisted by 
specialists in certain groups. With more than nine hundred text figures, specially 
designed for this edition. 
Cloth, 8vo, 928 pages. Price, $2.50. 
MERICAN  botanists, who have been impatiently awaiting the 
revision of this indispensable work, will be delighted to know that 
a seventh, completely revised, and copiously illustrated edition, is now 
ready. The revision has entailed years of work by skilled specialists. 
No effort or expense has been spared to attain the highest degree of clear- 
ness, terseness, and accuracy. The plant families have been rearranged in 
a manner to show the latest view of their affinities, and hundreds of species 
have been added to the flora. The nomenclature has been brought into 
thorough accord with the important international rules recently established 
— a feature of great signifieanee. 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 international agreement. Nearly 
a thousand figures 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. 
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