

6 m 



Vol. LXXXIII, No. 2 AUGUST, 1913 



THE 



POPULAR SCIENCE 

 MONTHLY 



EDITED BY J. McKEEN GATTELL 



CONTENTS 



The Earth and Sun as Magnets. Dr. George Elleby Hale . . . 105 

 Eugenics, with special reference to Intellect and Character. Profepsor 



Edwabd L. Thobndike 125 



Education through Reading. Db. E. Benjamin Andbews . . .139 

 The Genesis of Personal Traits. Professor 8. N. Patten . . .149 

 The Sequence of Sciences in the High School. Josiah Main . . . 158 

 The Relation of Culture to Environment from the Standpoint of Inven- 

 tion. Db. Clark Wissleb 164 



The Future of the North American Fauna. The late Dr. Walter Hahn 169 

 The Size of Organisms and of their Constituent Parts in relation to 



Longevity and Senescence. Professor Edwin G. Conklin . .178 

 Bernoulli's Principle and its Application to explain the Curving of a 



Baseball. Db. S. LeRoy Brown 199 



The Progress of Science : 



The Bureau of Science in the Philippine Islands ; The Distribution and Cause of 

 Pellagra ; Scientific Items ......... 204 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOKE: Sub-Station 84 

 SsHOue Number, 30 Cents Yearly Subscription, $3.00 



Copyright, 1912, by THE SCIENCE PRESS 



