The American Journal of Science 



Established by Benjamin Silliman in 1818 



The Leading; Scientific Journal in the United States 



Devoted to the Physical aud Natural Sciences, with special reference to 

 Physics, and Chemistry on the one hand, and to Geology and Mineralogy 

 on the other. 



Associate Editors : Professor GEOE 



Haven; Professor 0^ BARKER, of Pnilrdelphia ; 

 Two volumes annually, in monthly numbers of about 80 pages each. 



This Journal ended its first series of 50 volumes as a quarterly in 1845 ; its second 

 series of 50 volumes as a two-monthly in 1870 ; its third series as a monthly ended Dec- 

 ember, 1895. A Fourth Series commenced in 1896. 



S6 2 S "] ,SC I iptlon P rice ' * 6 P e «- year or 50 cents a number, postage prepaid in the United States ; 

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*^Ten-Volume Indexes, Vols. I-X XI-XX, fourth series, price one dollar. Address 



The American Journal of Science 

 New Haven, Conn. 



Editor: EDWARD S.DANA. 

 .. GOODALE, JOHN TROWBRIDGE, W. G, FARLOW and 

 VERRILL, HENRY S. WILLIAMS and L. V. PIRSS0N, 



SECOND EDITION, NOVEMBER, 1910 



AMERICAN MEN OF SCIENCE 



A BIOGRAPHICAL DIRECTORY 

 EDITED BY J. /IcKEEN CATTELL 



aawunj e af t !™i are new > , and the itches which appeared in the first dimmmfiaL m nmJ^er^teb^en^revl^d. "tL 

 cha *y< in tegen^aT^nlfT 1 ™ "c^™ ^ " STb^i ^ ^T' *° '^"f* ^Sk !rt *** " 



SSHS andf ° r reason a fcw na ™* included in the first cdtfon hm*b£ omMed? Effor°UhaXe been^exerteTto 

 r ^V ew. / *** ^Ptee and accurate as possible. There are of amrse omissions, if only because some men will not 

 h the rtJth t'^T 1 re 9^tsfor the information needed. The thousand leading men of science hate hem again selected 

 hate o6<a»3y " ¥ ' re b ¥'™, and stars hare been added to the subjects of research in the case of 269 new men who 



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