The Popular Science Monthly 



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



CONTENTS OF THE OCTOBER NUMBER 

 Genetics. W. Bateson. 

 Civilization and Vegetation. Professor George J. 



Peirce. 

 English as an International Language. Professor 



Albert Leon Guerard. 

 Perfect Flowers in Maize. 



gomery. 

 The Sounds ''ch'* and " j." 

 The Relative Importance 



Smith Baker. 

 Language Study and Language Psychology. 



fessor E. W. Pay. 

 Agriculture in the High School. Josiah Main. 

 The Laws of Environmental Influence. Professor 



Simon N. Patten. 

 The Race Fiber of the Chinese. Professor Edward 



A. Ross. 

 The Progress of Science : 



The Langley Memoir on Mechanical Flight ; Ad- 

 dress of the President of the British Association ; 



The Director of the American Museum of Natural 



History ; Scientific Items. 



Professor E. G. Mont- 

 Winifred Scripture. 

 of Mental Pain. Dr. 



Pro- 



CONTENT8 OF THE NOVEMBER NUMBER 



The Bering River Coal Field, Alaska. Professor 



George F. Kay. 

 Insect Parasitism and its Peculiarities. Professor 



William Morton Wheeler. 

 Mathematics and Engineering in Nature. Professor 



Arnold Emch. 



American Mathematics. Professor G. A. Miller. 



Buffon and the Problem of Species. Professor Arthur 

 O. Lovejoy. 



A World-wide Color Line. Professor U. G. Weatherly. 

 The Crossing of the Races. Dr. J. G Wilson. 

 The Conservation of the Food-supply Dr. Henry 

 Prentiss Armsby. 



The Moral Influence of a University PenBion System. 

 Dr. Henry S. Pritchett. 



The Progress of Science : 



College Studies and Professional Training ; The 

 Portsmouth Meeting of the British Association ; 

 A Hand-book of Universities ; Scientific Items. 



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