Vol. LXXX, No. 3. MARCH, 1912 



THE 



POPULAK SCIENCE 

 MONTHLY 



EDITED BY J. McKEEJV CATTELL 



CONTENTS 



Glimpses of the Great American Desert. Professor Raymond J. Pool 209 

 A New Development in the Mississippi Delta. Professor E. W. Hilgaed 236 

 The Imperial Universities of Japan. H. Foster Bain .... 246 

 EflGiciency Wage Standards. Professor Scott Neabing .... 247 

 The Instinctive Element in Human Society. Professor Charles A. Ell- 



wooD ............ 263 



Types of Men. Professor S. N. Patten 273 



Time and Space. Dr. Charles W. Super ...... 280 



Professional Training for Child Hygiene. Professor Lewis M. Terman 289 

 The Four Periods in the Development of the Modern Zoological System. 



Professor H. S. Pratt 298 



Florentino Ameghino. Dr. W. D. Matthew 303 



The Progress of Science : 



Ten Years of the Carnegie Institution ; Lord Lister ; Scientific Items . . 308 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YOEK : Sub-Station 84 

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