








' SECOND EDITION, NOVEMBER, 1910 
AMERICAN MEN OF SCIENC 
A BIOGRAPHICAL DIRECTORY 
EDITED BY J. [icKEEN CATTELL 
A Biographical directory requires revision if it is to maintain its usefulness. Nearly a third of the names in t, 
present edition are new, and the sketches which appeared in the first division have in nearly every case been revised. 
amount of work required to prepare the revision been as great as that given to the first edition. There has been 
change in the general plan of the work, Greater strictness has been observed in confining its scope to the natural ar 
exact sciences, and for this reason a few names included in the first edition have been omitted. Efforts have been exerted 
make the book as complete and accurate as possible. There are of course omissions, if only because some men will n 
reply even to repeated requests for the information needed. The thousand leading men of science have been again select: 
by the methods that were used before, and stars have been added to the subjects of research in the case of 269 new men wi 
have obtained places on the list. The editor’ s object in selecting this group of scientific men has been to make a study 
the conditions on which scientific research depends and so far as may be to improve these conditions. There are printed : 
an appendix the two statistical studies that have been made.—From the Preface to the Second Edition. 
Aaa directory should be in the hands of all those who are directly or indirectly interested in scientif) 
work. y ¥ 
(1) Men of Science will find it indispensable. It gives not only the names, addresses, scientific recor( 
and the like of their fellow workers, but also an invaluable summary of the research work of the countr; 
completed and in progress, 
(2) Those interested in science, even though they may not be professionally engaged in research worl) 
will find much of interest and value to them in the book. 
(3) Executives in institutions of learning and others brought into relations with scientific men wil 
use the book constantly. 
(4) Editors of Newspapers and periodicals will find it to be one of the works of reference that they wi) 
need most frequently. 
(5) Libraries will find the book to be a necessary addition to their reference shelves. 
The second edition of the Directory extends to more than 600 pages and contains more than 5500 sketche} 
It is well printed on all rag paper and bound in buckram with Jeather label. Although the work has bee) 
increased in size by more than 50 per cent., it is sold at the same price as the first edition. 
Price: Five Dollars, net, Postage paid 
THE SCIENCE PRESS 
GARRISON, N. Y. LANCASTER, PA. 
SUB-STATION 84, NEW YORK CITY. 

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To THE SCIENCE PRESS ; ; 
Garrison, N. Y. 
Please find enclosed five dollarsin payment for a cop) 
of the Second Edition of the Biographical Directory of American [en o 
Science, which should be sent to | 
None... iS As da as ee eee ‘ 
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