SCIENCE 



Friday, Novembee 12, 1915 



CONTENTS 

 The Human Significance of Mathematics: 

 Pkofessok Cassius J. Keysee 663 



The New York Meeting of the National Acad- 

 emy of Sciences 680 



Karl Eugen Guthe 685 



Scientific Notes and News 686 



University and Educational News 690 



Discussion and Correspondence: — 



The Position of Beferences in Journal Art- 

 icles: Dk. F. a. Bather, Dk. Clarence J. 

 West. Injections of the Bundle of His: 

 Professor A. "W. Meyer. The Pistillate 

 Spilcelet in Zea Mays: Professor Alban 

 Stewart. A Bemarlcable Flight of Caddis 

 Flies and Chironomids: W. L. McAtee. On 

 the Nomenclature of Electrical Units: Pro- 

 fessor A. E. Caswelu Cooperation in 

 Labelling Museums: Harlan I. Smith. 

 Dr. Edward Hindle: Professor G. H. F. 

 NUTTALL 690 



Scientific BooTcs: — 



Cannon on Bodily Changes in Pain, Hunger, 

 Fear and Hage; Crile on the Origin and 

 Nature of the Emotions: Professor James 

 E. Angell 696 



Special Articles: — 



A Sterile Siphon Tip Protector: Ivan C. 

 Hall 700 



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

 review should be sent to Professor J. McKeen Cattell, Garrisou- 

 on-Hudson. N. Y. 



THE HUMAN SIGNIFICANCE OF MATHE- 

 MATICS^ 

 Homo sum; humani nil a me alienum puto. — Ter- 

 ence. 



The subject of this address is not of my 

 choosing. It came to me by assignment. I 

 may, therefore, be allowed to say that it is 

 in my judgment ideally suited to the oc- 

 casion. This meeting is held here upon 

 this beautiful coast because of the presence 

 of an international exposition, and we are 

 thus invited to a befitting largeness and 

 liberality of spirit. An international ex- 

 position properly may and necessarily will 

 admit many things of a character too tech- 

 nical to be intelligible to any one but the 

 expert and the specialist. Such things, 

 however, are only incidental — contributory, 

 indeed, yet incidental — to pursuit of the 

 principal aim, which is, I believe, or ought 

 to be, the representation of human things 

 as human — an exhibition and interpreta- 

 tion of industries, institutions, sciences and 

 arts, not primarily in their accidental or 

 particular character as illustrating indi- 

 viduals or classes or specific localities or 

 times, but primarily in their essential and 

 universal character as representative of 

 man. A world-exposition will, therefore, 

 as far as practicable, avoid placing in the 

 forefront matters so abstruse as to be fit 

 for the contemplation and understanding 

 of none but specialists ; it will, as a whole, 

 and in all its principal parts, address itself 

 to the general intelligence; for it aims at 

 being, for the multitudes of men and 



1 An address delivered August 3, 1915, Berke- 

 ley, Calif., at a joint meeting of the American 

 Mathematical Society, the American Astronomical 

 'Society, and Section A of the American Associa- 

 tion for the Advancement of Science. 



