Vol. LXXX, No. 4. APRIL, 1912 



THE 



POPULAE SCIENCE 

 MONTHLY 



EDITED BY J. McKEEJT CATTELL 



CONTKNTS 



On the Need of Administrative Changes in the American TJniversity. 



Professor George T. Ladd 313 



Science in the Service of Highway Construction. Dr. Cliffoed Kiohard- 



SON 326 



The Brooklyn Botanic Garden. Dr. C. Stuart Gager .... 338 

 Alexander von Humboldt. Dr. Edward F. Williams .... 346 

 A Review of Three Famous Attacks upon the Study of Mathematics as a 



Training of the Mind. Professor Florian Cajori .... 373 



The Red Sunflower. Professor T. D. A. Cockerell .... 383 



The Medical Side of Immigration. Dr. Alfred G. Reed . . . 393 



Ancient Portals of the Earth. Professor James Perrin Smith . . 400 



Ptomaines and Ptomaine Poisoning. Dr. Edwin LeFevrb . . . 405 



Science and International Good Will. J. McKeen Cattell . . . 410 



The Progress of Science : 



The Kockefeller Institute for Medical Research ; Exploration and Adventure in the 

 Antarctic; Scientific Items ......... 417 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOEK : Stib-Station 84 

 SiNaiiB NtJMBEB, 30 CtoJTs Ykaelt Subscription, |3.00 



OWYBJGHT, 1911, BY THE SCIENCE PRESS 



