The Popular Science Monthly 



Entered in the Post Office in Lancaster, Pa., as second-class matter. 



CONTENTS OF THE MAY NUMBER 



A Problem in Evolution. Professor William Patten. 



The North American Indians of the Plains. Dr. 

 Clark Wissler. 



Heredity and the Hall of Fame. Dr. Frederick 



Adams Woods 

 The Man who discovered the Circulation of the 



Blood. Professor Fraser Harris. 



Great Erosional Work of Winds. Dr. Charles R. 



Keyes. 

 Hospitals, their Origin and Evolution. Dr. John 



Foote. 



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



Welfare and the New Economics. Professor Scott 

 Nearing. 



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



The Progress of Science: 



The Number of Scientific Men in the World; The 

 Scientific Career in the United States ; Scientific 

 Items. 



CONTENTS OF THE JUNE NUMBER 



Some Further Applications of the Method of Posi- 

 tive Rays. Sir J. J. Thomson. 

 The Abalones of California. Professor Charles 



Lincoln Edwards. 

 The President of the Ninth International Congress 



of Applied Chemistry. Dr. George Frederick 



Kunz. 

 The American College as it looks from the Inside. 



Professor Charles Hart Handschin. 

 Edward Whymper. Alpinist of the Heroic Age. 



Professor B. E. Young. 

 Alcohol from a Scientific Point of Tiew. Dr. J. 



Frank Daniels. 

 The Biological Status and Social Worth of the 



. Mulatto. Professor H. E. Jordan. 

 The Evidence of Inorganic Evolution. Sidney 



Liebovitz. 

 A Statistical Study of Eminent Women. Cora Sutton 



Castle. 

 The Progress of Science: 



The Anniversary Meeting of the National 



Academy of Sciences; The History of the National 



Academy ; Scientific Items. 

 Index to Volume LXXXII 



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