AMERICAN MEN OF SCIENCE 
A BIOGRAPHICAL DIRECTORY 
EDITED BY J. MCKEEN CATTELL, 
Professor of Psychology in Columbia University ; Editor of Scéence and of The Popular Science Monthly 
There are included in the directory the records of more than four thousand men of science, 
and it is peiaherd “ : om entries are tolerably complete for those in North America who have car- 
ried on research w nm the pees and exact sciences. It was intended that each entry should 
contain poreendranty as > folios 
(7) The full — be a and matl address, the part of the name ordinari ly omt tted 
in correspondence nm parenthests. (2) The department of Erna gay be given in 
ttalics. (3) ee blew Sas date of birth. (4) Education and degre (5) Pos ypyict Ars 
dates; the present position rs iting Leia’ in ream (6) Temporary pre ig tnor post 
(7) Honorary remtt fic foes re la Mem Dhteae dd n sent and learned 
soctettes. (oo Chief subjects af beder 
oe ose in progre 
ork has bee n edited with great care and ts believed to be as complete and accurate as any 
book fy the. heb cter. It is well printed on all rag paper made expressly for the book and is bound 
in buckram with leather label. 
Price: $5.00, zet, postage paid. 
The SCIENCE PRESS, **$2!°9 8 cuy_ 
The Role of Diffusion and }}]} Light Waves 
Osmotic Pressure in Plants |] |] and Their Uses 
LIVINGSTON 
By ALBERT A. MICHELSON 
_— of the Department of ia a 
This book would serve as a manual The University of Chica 
for both beginning and advanced 
students, as the first part is a thor- 
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HIS volume, illustrated with 108 text fig- 
ures — oe lithographed Letts aif 
phenomena in organic life; .while pa dg ate by the layman and yet 
the second part is a more discursive with an accuracy and completeness that sat- 
and equally thorough discussion of isfies all See requirements. e boo 
is as useful to one who would know what 4 
the present statu y i 
P s of knowledge in light wave is, se thus get an understanding 
regard to the occurrence of these of a revolutionary idea in modern science, 
phenomena, together with a bibli- as for one possessed of the highest scientific 
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what scat- 
xiv+150 pages, 8vo, cloth : : 
net; $1.50; pet sik, G1.86 tered literature of the subject. 
$2.00 net: postpaid, $2.13 
THE UNIVERSITY OF CHICAGO The University of Chicago pms 
PRESS CHICAGO ILLINOIS CHICAGO and 156 Fifth Avenue NEW Y 
