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. 



Friday, August 21, 1908 



CONTENTS 



Chemical Publications in America in Relation 

 to Chemical Industry: Pkofessob W. A. 

 Notes 225 



The Theory of the Parasitic Control of In- 

 sect Pests: Pkofessok C. W. Woodwoeth. 227 



An Astronomical Expedition to Argentina. . . 230 



Scientific Notes and Neios 231 



University and Educational News 233 



Discussion and Correspondence: — 



The Chemical Formula of the Mineral 

 Benitoite: VV. C. Blasdale. Appointments 

 in American Universities: Peofessok R. M. 

 Wenley 233 



Scientific Books: — 



Mus6e Osteologique : W. K. Gkegory. Le- 

 Renard's Essai sur la Valeur Antitoxique 

 de I' Aliment Complet et Incomplet : 

 HowAED S. Reed. Noyes's Organic Chem- 

 istry: Peofessoe Geo. B. Feankfoetee .. 234 



Scientifio Journals a/nd Articles 239 



Types of American Grasses: Dr. N. L. 

 Beitton 239 



Dr. John B. Trask, a Pioneer of Science on 

 the West Coast : Db. Robert E. C. Stearns 240 



Special Articles: — 



The Grading of Students: Peofessoe Mas 

 Metee. a New Color Variety of the 

 Guinea Pig: Peofessoe W. E. Castle. 

 The Origin of Varieties in Domesticated 

 Species : W. J. Spillman 243 



The American Association for the Advance- 

 ment of Science: — 

 Section B — Physics : Professor A. D. Cole. 254 



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

 review should be sent to the Editor of Science, Garrison-on- 

 Hudson, N. Y., or during the present summer to Wood's Hole, 

 Mass. 



CHEMICAL PUBLICATIONS IN AMERICA IN 

 RELATION TO CHEMICAL INDUSTRY "^ 



The American Chemical Society holds a 

 unique place among the chemical societies 

 of the world. It combines functions and 

 activities which could, heretofore, be found 

 only in separate organizations. It is the 

 only large chemical society in the world 

 which includes both those who are engaged 

 in the application of chemistry to the in- 

 dustries and to chemical engineering and 

 those who are engaged in teaching and in 

 researches with no immediate practical 

 bearing and which provides adequately for 

 the interests of all classes of chemists. 

 There are two reasons which justify this 

 policy. In these days of intense specializa- 

 tion one of the greatest dangers to a pro- 

 fessional man is that he will become so in- 

 tensely absorbed in the field in which he is 

 working that he loses all interest in other 

 lines of work and falls out of touch with 

 the rapid advances which his science is 

 making in every direction. This tendency 

 is almost as marked and fully as dangerous 

 for those who are engaged in pure research 

 as for those working in applied chemistry. 

 Both classes of our members find that con- 

 tact with chemists having a radically dif- 

 ferent point of view is exceedingly stimu- 

 lating and useful. The advantages of an 

 Abstract Journal which covers both fields 

 are so self-evident as scarcely to require 

 remark. 



The second reason which justifies the 



' An address delivered at the New Haven meet- 

 ing of the American Chemical Society, July 2, 

 1908. 



