SCIENCE 



Editorial Committee : S. Newcomb, Mathematics ; K. S. Woodward, Mechanics ; E. C. Pickering, 



Astronomy ; T. C. Mendenhall, Physics ; E. H. Thurston, Engineering ; Ira Remsen, Chemistry ; 



Joseph Le Conte, Geology ;,W. M. Davis, Physiography; Henry F. Osboen, Paleontology; 



- W. K. Brooks, C. Hart Meeeiam, Zoology ; S. H. Scuddee, Entomology ; C. E. Bessey, 



N. I,. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bowditch, 



Physiology ; J. S. Billings, Hygiene ; William H. Welch, Pathology ; 



J. MoKeen Cattell, Psychology ; J. W. Powell, Anthropology. 



Fbiday, August 31, 1900. 



CONTENTS: 



Doctorates Conferred by American Universities 321 



Inertia and Gravitation: Peofessoe Reginald 



A. Fessenden . 325 



Tlte Worli of the Society for Agricultural Education : 



Peofessoe W. J. Beal 328 



Tlie British Association 334 



Variation among Hydromedusx : Professor 



Charles W. Hargitt 340 



Lateral Line Organs in Eunica Auriculata n sp.: 



Professor Aaron A. Teeadwell 342 



Scientific Books : — 



BuckingJiam's Outline of the Theory of T/iermo- 



dynamics : Peofessoe J. E. Teevoe. Jorgen- 



sen's 3Iicroorganisms and Fermentation : H. W. 



C. Books Received 343 



Scientific Journals and Articles 345 



Discussion and Correspondence : — 



Eminent American Men of Science: Professor 



Henry Montgobieey 346 



International Commission on Atomic Weights : J. 



L. H 346 



Plant Embryo-Sacs. Dr. K. M. Wiegand 347 



Scientific Notes and Neios 347 



University and Educational News 352 



DOCTORATES CONFERRED BY AMERICAN 

 UNIVERSITIES. 

 Reportb received from ofiBcial sources 

 show that during the past year the degree 

 of doctor of philosophy has been conferred 

 by 22 universities on 233 candidates. The 

 numbers given by each university in the 

 humanities and in the sciences and a com- 

 parison with the two preceding years are 

 shown in the following table : 



MSS. intended for publication and books, etc., intended 

 for review should be sent to the responsible editor, Profes- 

 sor J. McKeen Cattell, Garrison-on-Hudson N. Y. 



