Vol. LXXX, No. 5. 



MAY, 1912 



THE 



POPULAR SCIENCE 

 MONTHLY 



EDITED BT J McKEEN CATTELL 



CONXKNTS 



The Kinetic Theory of Matter and the Atomic Theory of Electricity. 



Professor Robert Andbew Millikan 417 



University Education in China. Professor Thomas T. Read 

 Precession : and the Pyramids. Dr. Pbrcival Lowell . 

 New York's Ten Thousand. William J. Rob 

 AsBortative Mating in Man. Dr. J. Arthur Harris 

 The Price Fallacy of High Costs. Dr. Ralph H. Hess . 

 A Bugbear of Reformers. Professor T. N. Carver 

 Research in Medicine. Professor Richard M. Pbarce . 



. 441 

 . 449 

 . 461 

 . 476 

 . 493 

 . 499 

 . 503 



The Progress of Science : 



The Centenary of the Academy of Natural Sciences of Philadelphia ; Deaths among 

 American Men of Science ; Scientific Items ...... 516 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOKE : Sub-Station 84 



SiNGLB NimBEE, 30 Cmns Ykaely Subscription, $3.00 



CoFTBieHT. 1911, BY THE SCIENCE PRESS 



