SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



KniTORidL CoMMiTTEK : S. Nkwcomb, Mathematioe ; B. S. Woodward, Meohanios ; E. C. Hickkkino 

 AstTonom; ; T. C- Mkndknhall, Physios ; K. H. Thurston, Engineering ; Iba Kbmskn, Chemistry ; 

 Charles D. Walcott, Geology ; W. M. Davis, Physiography ; Henry F. Osboen, Paleon- 

 tology ; W. K. Brooks, C. Hart Mkrriam, Zoology ; S. H. Scuddee, Entomology ; C. E. 

 Bessey, N. L. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. 

 Bowditch, Physiology ; William H. Welch, Pathology ; 

 J. McKeen Cattbll, Psychology. 



Friday, August 28, 1903. 



coy TESTS. ■ 



Doctorates Coiijcrred by American Universi- 

 ties 257 



The Summer Laboratory as an Instrument of 

 Biological Research: Professor C. Judson 

 Herrick 2C3 



The International Catalogue of Scientific Lit- 

 erature: Dr. Cyrus Adler 268 



Scientific Books: — 



New Text-books in Physics: Professor \V. 

 LeConte Stevens 271 



Societies and .Icademics: — 



The Bibliographical Society of Chicago: 

 Charles H. Brown 275 



Discussion and Correspondence : — 



The St. Louis Congress of the .irts and Sci- 

 ences: Professor John Dewey. Concern- 

 ing the ^yord 'Barometer': Professor 

 John C. Shedd 275 



Shorter Articles: — 



On a New Lilac-colored Transparent Spodu- 

 mene: George Frederic Kinz. The Water 

 Supply of Havana: Professor C. H. Eiqen- 



MANN 280 



yoles on Physics : — 



Group and Wave Velocity; Variation of 

 Weight with Chemical and Physical 

 Changes: W. S. F 282 



Resolutions of the National Educational Asso- 

 ciation 283 



The American Electrochemical Society 284 



Scientific Notes and Neus 285 



University and Educational Neics 288 



MSS. Intended for publlcatioQ and books, etc.. intended 

 lor rerlew should be sent to the responsible editor, Pro- 

 feiaor J. McKesn Cattell, Garrlson-on-Hudson, N. Y. 



DOCTORATES CONFERRED BY AMERICAN 

 UNIVERSITIES. 



The degree of doctor of philosophy has 

 this year been conferred on 266 candidates 

 by 27 institutions. This exceeds by 10 

 the number conferred in 1901, and is 

 doubtless the largest number ever con- 

 ferred by American universities. The in- 

 crease from year to year is, however, un- 

 certain and small, the numbers for the six 

 years being 234, 222, 239, 253, 216 and 266. 

 It seems that the number of graduate stu- 

 dents has increased more rapidly than the 

 doctorates, which may possibly be due to 

 somewhat more strict requirements. Still 

 it is rather disappointing that the number 

 (if men with a proper training for research 

 and advanced teaching increases so .slowly. 

 It should also be remembered that the num- 

 ber studj'ing in Germany tends to decrease. 



The statistics here given do not agree 

 with those published subsequently by the 

 U. S. Commissioner of Education, and as 

 the latter figures are widely quoted, it 

 may be well to call attention to the fact 

 that they are valueless. The report of 

 the commissioner records 343 doctorates 

 conferred in 1901, but the table shows that 

 the largest number of degrees conferred 

 on examination was by Taylor University 

 at Upland, Ind., which gave the doctorate 

 of philosophy to no less than 45 candidates. 

 One may well wish to learn something in 



