Announcing the publication of 
The Chemistry of Plant Life 
By ROSCOE W. THATCHER 
Dean of the Depart7nent of AgrictiUiire^ University of Minnesota 
McGrazv-Hill Agricultural and Biological Publications 
268 pages, 6x9, $3.00 net, postpaid 
T^HE first American textbook devoted to the chemistry of plant cell activities. 
The material is the development of the course in Phyto-chemistry offered by 
the author for several years to the students of the Plant Science Group of the 
University of Minnesota. The book aims to furnish a proper foundation upon 
which to build a scientific knowledge of how plants grow. 
Send for a copy of this nezv book on approval 
McGraw-Hill Book Co., inc. 
Peiin Terminal Building 
370 Seventh Avenue New York 
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Box 83, Univ, Sta. Urbana, Illinois 
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