ZAG Gift Worth 1 Giving’ 
I Presén’ Worthing 
INTERNATIONAL 
Dictionary of English, Biography, Geography, Fiction, Etc. 
Useful. Reliable. Attractive. Lasting. 
The 
5000 Illustrations. Rich Bindings. 
yo o Give Some One This Useful Christmas Present ! 9 
FREE—“A Test in Pro muneiation n,’ 
Instructive and entertaining for the whole psn 
Illustrated pamphlet also free. 
G. & C. Merriam Co., Publishers, Springfield, Mass. 
When calling please ask to see Mr. Grant 
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A COSY CORNER 
This is a College Girl’ ted with her 
favorite pictures—portraits of Ant s and Mu- 
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We m hand-colo red, too, or you can 
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together with our new Illustrated Cat talog age 5I, 
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COSMOS PICTURES COMPANY 
296 BROADWAY, NEW YORK 
The Role of Diffusion and 
(Osmotic Pressure in Plants 
By BURTON EDWARD LIVINGSTO 
This book would serve as a manual 
for both beginning and advanced 
students, as the first part is a thor- 
ough and concise treatise on osmotic 
phenomena in organic life; while 
the second part is a more discursive 
and equally thorough discussion of 
the present status of knowledge in 
regard to the occurrence of these 
phenomena, together with a bibli- 
ography on the subject. 
xiv+150 pages, 8vo, cloth 
net, $1.50; postpaid, $1.60 
THE UNIVERSITY OF CHICAGO 
PRESS CHICAGO, ILLINOIS 
—F 
