SCIENCE 



Friday, January 5, 1917 



CONTENTS 

 The American Association for the Advance- 

 ment of Science: — 

 The New YorTc Convocation 1 



Productive Scientifia Scholarship: Theodore 

 Roosevelt ' 



Dedication of the Ceramic Engineering Build- 

 ing of the University of Illinois 12 



' ' Science ' ' and the Cost of Paper 13 



Scientifia Notes and News H 



University and Educational News 18 



Discussion and Correspondence: — • 



Phosphates: Professor C. A. Mooers. Soil 

 Solution: J. Franklin Morgan. Oligae- 

 roie Histanaerobe : Dr. M. W. Lton, Jr. ' 



FilaMe Announcements of New BooTcs: 



WiLHELM SeGERBLOM 18 



Quotations : — 



The Work of the American Association ... 20 



Scientific Boohs: — 



Lectures on Nutrition: Dr. C. F. Lang- 

 WORTHT. Catalogue of the Lepidoptera 

 Phalwnas: Dr. Harrison G. Dtak 21 



Special Articles: — 



The Searing of DrosopMla Ampelophila 

 Loew on Solid Media: J. P. Baumberger 

 AND E. W. Glaser 21 



Neiv York Meeting of the American Associa- 

 tion for the Advancement of Science: "W. E. 

 Henderson 22 



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

 review sbould be sent to Professor J. McKeen Cattell, Garrison- 

 On-Hudson, N. Y. 



THE NEW YORK CONVOCATION 



The meeting of the American Association for the Advancement of Science and the affili- 

 ated national scientific societies held in New York City during the last week of the year was 

 the largest and most important gathering of scientific men hitherto held in this country 

 or elsewhere. The association met in twelve sections and there were fifty-two separate 

 societies in session, not counting the foiir great engineering societies, which held one gen- 

 eral meeting with the association. It is difficult to estimate the attendance. The regis- 

 tration of members of the association was in the neighborhood of 2,100, but it is impos- 

 sible to state the percentage of members of the association who register, or the per- 

 centage of those in attendance at the meeting who are members of the association. Casual 

 observation seemed to indicate that about one in four or five attending the meetings wore 

 the badge of the association and this would give an attendance of over 8,000, but naturally 

 very little weight can be laid on such an estimate. In spite of the magnitude of the meet- 

 ing, Columbia University and the other places in which sessions were held did not appear 



