Vol. LXXXII, No. 5. MAY, 1913 



THE 



POPULAR SCIENCE 



MONTHLY 



EDITED BY J. McKEEN CATTELL 



CONTENTS 



A Problem in Evolution. Professor William Patten .... 417 

 The North American Indians of the Plains. Dr. Clark Wissler . . 436 

 Heredity and the Hall of Fame. Dr. Frederick Adams Woods . . 445 

 The Man who discovered the Circulation of the Blood. Professor 



Fraser Harris 453 



Great Erosional Work of Winds. Dr. Charles R. Keyes . . . 468 

 Hospitals, their Origin and Evolution. Dr. John Foote . . . 478 

 The New Optimism. Professor G. T. W. Patrick .... 492 

 Welfare and the New Economics. Professor Scott Nearing . . . 504 

 Scholarship and the State. Professor F. C Brown .... 510 

 The Progress of Science : 



The Number of Scientific Men in the World ; The Scientific Career in the United 

 States ; Scientific Items ......... 516 



THE SCIENCE PRESS 



LANCASTER, PA. GARRISON, N. Y. 



NEW YORK : Sub-Station 84 

 &engi*e Number, SO Gents Yeablt Subscription, $3.00 



L y y^T-wy^r""-"'^"^—" -^^— — — _ — , — B r ^ — ^^— ^— -it— i^— 



Copyright, 1912, by THE SCIENCE PRESS 



