The American Journal of Science 



Established by Benjamin Silliman in 1818 



The Leading Scientific Journal in the United States 



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

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

 on the other. 



Editor: EDWARD S. DANA. 

 Associate Editors : Professor GEORGE L. GOODALE, JOHN TROWBRIDGE, W. G. FARLOW and WM. M. DAVIS 

 of Cambridge ; Professors A. E. VERRILL, HENRY 8. WILLIAMS and L. V. PIRSSON, of New 

 Haven; Professor O. F. DARKER, of PhilrdelpMa ; Professor JOSEPH S. AIMES, 

 of Baltimore ; MR. J. S. DILLER, of Washington. 

 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 Dee- 

 ember, 1895. A Fourth Series commenced in 1896. 



Subscription price, 96 per year or 50 cents a number, postage prepaid in the United States ; 

 $6.25 to Canada ; $6,40 to Countries in the Postal Union. Back numbers at reduced prices. 

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



The American Journal of Science 

 New Haven, Conn. 



SECOND EDITION, NOVEMBER, 1910 



AMERICAN MEN OF SCIENCE 



A BIOGRAPHICAL DIRECTORY 



EDITED BY J. HcKEEN CATTELL 



Biographical directory require* revision if it it to maintain its usefulness. Nearly a third of the n 

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red to prepare the revision has been as great as that given to tlu fir st edition. ja*r*< 



amount of work required to prepare the revision has been as great as that given to the first 

 C ^^»cienau ^^T^ ? ^ ^ WOri " GreaUr <*™tt^ka* ^^wLro antUcdf 

 mal ? th * book as complete and^ae&^lupossible, There are of course omissions, if only because) 

 reply even to repeated requests for the information needed. The thousand leading men of science hate b 

 »y the methods that were used before, and stars have been added to the subject* of research tn the case of : 



e list. The edit 



x a" « 11 s'* ' " T " " 

 , that have been made.— From the Preface to the Seco 



Price : Five Dollars, net, Postage paid 



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