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 $2.50 



Tourist's edition. Flexible leather, 926 pages 3-OO 



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. 

 ^[ 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 



