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. G00DALE, JOHN TROWBRIDGE, W. G. FARLOW and WM. M. DAVIS 

 of Cambridge ; Professors A. E. VERRILL, HENRY S. WILLIAMS and L. V. PIRSS0N, of New 

 Haven; 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 Dec- 

 ember, 1895. A Fourth Series commenced in 1896. 



Subscription price, $6 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. 



University Control 



By J. McKeen Cattell, Professor of Psychology in Columbia University 

 Together with a series of Two Hundred and Ninety-nine Unsigned Letters by Leading Men of Scienea 

 holding Academio Positions and Articles by Joseph Jastbow, Gbobqb T. Ladd, John J. Stevenson, J. B. 

 C Brighton, J. MoKebn Cattell, Geobob M. Stbatton, Stewaht Patos, John Jat Chapman, Jambs P. 



A great variety of questions concerning general university administration are dealt with in an original i 



SCIH1NCE AIND EDUCATION 



A series of volumes for the promotion of scientific research and educational progress 



VOLUME L The Foundations of Science. By H. PoinoarA Containing the authorised English translation 

 by Geobqe Bbucb Halstbd of "Science and Hypothesis." "The Value of Science," and "Scienoe 

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VOLUME II. Mtdical Research and Education. By Riohabd M. Pbabob, William H. Welch, W. H. 

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 Councilman, Theobald Smith, G. N. Stbwabt, C. M. Jackbon. E. T. Lton, James B. Hbbbick. John 

 M. Dodbon. C. R. Babdben, W. OnrftLS, S. J. Mbltzeb. James Ewtno, W. W. Keen, Henbt H. Donald- 

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VOLUME HI. University Control. Now Beady. Page* x+48*\ Price, *3JX) net. 



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