SCIENCE 



EmiOEiAL Committee : S. Newcomb, Mathematics ; E. S. Woodward, Mechanics ; E. C. Pickeking, As- 

 tronomy ; T. C. Mendenhall, Physics ; R. H. Thurston, Engineering ; Ira Remsen, Chemistry ; 

 J. Le Conte, Geology; W. M. Davis, Physiography; O. C. Marsh, Paleontology; \V. K. Brooks, 

 Invertebrate Zoijlogy ; C. Hart Meeriaji, Vertebrate Zoology ; S. H. Scudder, Entomology ; 

 N. L. Beitton, Botany ; Heney F. Osborn, General Biology ; H. P. Bowditch, 

 Physiology ; J. S. Billings, Hygiene ; J. McKeen Cattell, Psychology ; 

 Daniel G. Beinton, J. W. Powell, Anthropology. 



Friday, November 1, 1895. 



CONTENTS: 



The Third Iniernaiional Zoological Congress 565 



Relations of the Weather Bureau to the Science and 

 Industry of the Country : E. L. MooRE 576 



Salix Wardi Bebb : N. M. Glatfelter 582 



Scientific tfotes and News: — 



Edwards' Butterflies of North America; Dacenport 

 Academy of Natural Sciences ; General 584 



Educational and University Neios : — 



Anmial Report of President Loiv of Columbia Col- 

 lege ; General 586 



Correspondence : — 



Tlie Problem of Solar Magnetism: Wm. Hal- 

 LOCK. Science or Poetry: S. H. Gage. The 

 Katydid's Orchestra : John B. Smith, S. H. 

 Scudder. A Naturalist in Mexico: Witmer 

 Stone. Shells as Implements: Henry W. 

 Haynes 588 



Scientific Literature : — 



Powell's Canyons of the Colorado : W J McGee. 

 Barker's Petrology for Students : Joseph P. 

 Iddings 593 



Scientific Journals : — 



The American Journal of Science. The American 

 Chemical Journal: J. Elliott GiLPlN. Psyche..599 



Neto Books 600 



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

 tor review should be sent to the responsible editor, Prof. J. 

 McKeen Cattell, Garrison on Hudson, N. Y. 



Subscriptions and advertisements should be sent to Science, 

 41 N. Queen St., Lancaster, Pa., or 41 East 49th St., New York. 



THE THIRD INTERNATIONAL ZOOLOGICAL 

 CONGRESS, LEYDEN, SEPT. 16-21, 1895. 



The International Zoological Congress 

 was organized at Paris in 1889 and the 

 second meeting was held at Moscow in 



1892. Neither of these Congresses was 

 conspicuoasly successful in attaining a truly 

 international character. The third Con- 

 gress, however, which met at Leyden, Sep- 

 tember 16-21 of the present year, was not 

 only brilliantly successful from the scien- 

 tific point of view, but was also thoroughly 

 international in the best sense of the word, 

 a result which the Committee of Organiza- 

 tion took the greatest pains to secure. The 

 whole number of members registered was 

 2.32, representing 22 nations and colonies. 

 Of course, these numbers were not equally 

 distributed, Holland having 64 and France 

 56 of the entire number. Of much more 

 importance than mere numbers in giving 

 this international character was the dis- 

 tinguished position of very many of the 

 delegates, most of the countries being rep- 

 resented by their foremost zoologists, and 

 the quality of the papers presented was 

 unusually high. The arrangements for the 

 comfort and convenience of the members, 

 for the meetings and excursions, were in all 

 respects excellent, and the Committee of Or- 

 ganization, MM. Hubrecht, Jentink, Hoek 

 and Horst, as well as the local committees, 

 acquitted themselves of their difficult task 

 to the admiration of all the visitors. Upon 

 this subject there was entire unanimity of 

 opinion, and none who had the privilege 

 of attending this Congress are at all likely 

 to forget the delightful and stimulating 

 experience. 



