American Men of Science 
A BIOGRAPHICAL DIRECTORY 
EDITED BY J. McKEEN CATTELL, 
Professor of Psychology in Columbia University; Editor of Science and of The Popular Science Monthly. 
[From the Editor’s Preface] 
This biographical directory of American Men of Science was begun as a manuscript 
reference list for the Carnegie Institution of Washington, which made an appropriation of 
$1,000 toward the clerical and office expenses. It is hoped that the publication will be a con¬ 
tribution to the organization of science in America. There is here given for the first time a 
fairly complete survey of the scientific activity of a country at a given period. As a reference 
boolc for the field it covers, it may be even more useful in academic circles than Minerva or 
Who’s Who in America. But the chief service it should render is to make men of science 
acquainted with one another and with one another's work. There scarcely exists among scientific 
men the recognition of common interest and the spirit of cooperation which would help to give 
science the place it should have in the community. It is fully as important for the nation as 
for men of science that scientific work should be adequately recognized and supported. JI e 
arc consequently in the fortunate position of knowing that whatever we do to promote our own 
interest is at the same time a service to the community and to the world. 
There arc included in the directory the records of more than four thousand men of science, 
and it is believed that the entries are tolerably complete for those in North America who have 
carried on research work in the natural and exact sciences. 
A star is prefixed to the subject of research in the case of about a thousand of the biograph¬ 
ical notes. These are the thousand students of the natural and exact sciences in United States 
whose work is supposed to be the most important. In each of the twelve principal sciences the 
names were arranged in the order of merit by ten leading students of the science. The 
average positions and the probable errors were then calculated, so that in each science the 
order of merit was determined together with its validity. 
The blanks were sent in all to about ten thousand who might have contributed to the ad¬ 
vancement of science and from the replies the names included have been selected. As many as 
four requests were sent to those who it was believed should be included, when they did not 
reply to previous applications. Proofs of all the biographies were submitted for correction — 
a second and a third copy having been sent when necessary — and revised proofs were sent 
after the corrections had been entered. 
It was intended that each entry should contain information, as follows: 
(y) The full name with title and mail address, the part of the name ordinarily omitted in correspondence beings in 
parentheses. 
(2) The department of investigation given in italics. 
(j?) The place and date of birth. 
(A Education and degrees. 
(A Positions with dates’, the present position being given in italics. 
( 6 ) Temporary and minor positions. 
(7) Honorary degrees and other scientific honors. 
(<?) Membership in scientific and learned societies. 
(9) Chief subjects of research, those accomplished being separated by a dash from those in progress. 
THE SCIENCE PRESS, 
GARRISON, NEW YORK, U. S. A. 
