SECOND EDITION, NOVEMBER, 1910 



AMERICAN MEN OF SCIENCE 



A BIOGRAPHICAL DIRECTORY 



EDITED BY J. HcKEEN CATTELL 



A Biographical directory requires revision if it is to maintain its usefulness. Nearly a third of the names in the. 

 present edition are new, and the sketches which appeared in the first division have in nearly every case been revised. Thft 

 amount of work required to prepare the revision has been as great as that given to the first edition. There has been no 

 change in the general plan of the work. Greater strictness has been observed in confining its scope to the natural and 

 exact sciences, and for this reason a few names included in the first edition have been omitted. Efforts have been exerted to 

 make the book as complete and accurate as possible. There are of course omissions, if only because some men will not 

 reply even to repeated requests for the information needed. The thousand leading men of science have been again selected 

 by the methods that were used before, and stars have been added to the subjects of research in the case of 269 new men who 

 have obtained places on the list. The editor's object in selecting this group of scientific men has been to make a study of 

 the conditions on which scientific research depends and so far as may be to improve these conditions. There are printed in, 

 an appendix the two statistical studies that have been made. — From the Preface to the Second Edition. 



This directory should be in the hands of all those who are directly or indirectly interested in scientific 

 work. 



(1) Men of Science will find it indispensable. It gives not only the names, addresses, scientific records 

 and the like of their fellow workers, but also an invaluable summary of the research work of the country, 

 completed and in progress. 



(2) Those interested in science, even though they may not be professionally engaged in research work,; 

 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 will 

 use the book constantly. 



(4) Editors of Newspapers and periodicals will find it to be one of the works of reference that they will 

 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 sketches. 

 It is well printed on all rag paper and bound in buckram with leather label. Although the work has been 

 inoreased 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. 



To THE SCIENCE PRESS 



Garrison, N Y. 



Please find enclosed jive dollars in payment for a copy 

 of the Second Edition of the Biographical Directory of American flen of 

 Science, which should be sent to 



Name...- „ „ _™„__™__„_™_____™__ m _. 



Address.^ 



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