Vol. LXXVI. No. 1. | JANUARY, 1910 



i&ri'ij At Va\~ 



THE 



POPULAR SCIENC 

 MONTHLY 



EDITED BY J. McKEEN CATTELL 



: 



CONTENTS 



Halley's Comet. Professor C. L. Doolittle 5 



The Darwin Celebration at Cambridge. Professor T. D. A. Cockerell . 23 



Darwin's Probable Place in Future Biology. Professor William E. 



Hitter 32 



The Evolution of Man and Its Control. Eoswell H. Johnson ... 49 



College Diversions. Professor John J. Stevenson 71 



The Theory of Style. Professor Walter Libby 76 



The Transmission of Disease by Money. A. Cressy Morrison ... 86 



How could an Explorer find the Pole ? Professor Harry Fielding Keid 89 



The Progress of Science : 



Anton Dohrn ; The Convocation Week Meetings at Boston ; The Non- 

 Magnetic Yacht ' ' Carnegie ' ' ; Scientific Items 98 



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Copyright, 1909, by THE SCIENCE PRESS 



