Vol. LXXIX, No. 4. OCTOBER, 1911 



THE 



POPULAR SCIENCE 

 MONTHLY 



EDITED BY J. MoKEEJT CATTELL 



CONTENTS 



Genetics. W. Bateson 313 



Civilization and Vegetation. Professor George J. Peirce . . . 328 



English as an International Language. Professor Albert Leon Guerard 337 



Perfect Flowers in Maize. Professor E. G. Montgomery . . . 346 



The Sounds "ch " and "j." Winifred Scripture .... 350 



The Relative Importance of Mental Pain. Dr. Smith Baker . . 355 



Language Study and Language Psychology. Professor E. W. Fay . 369 



Agriculture in the High School. Josiah Main 385 



The Laws of Environmental Influence. Professor Simon N. Patten . 396 



The Race Fiber of the Chinese. Professor Edward A. Ross . . . 403 



The Progress of Science : 



The Langley Memoir on Mechanical Flight ; Address of the President of the British As- 

 sociation ; The Director of the American Mnsenm of Natural History; Scientific Items 409 



THE SCIENCE PRESS 



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coftbight, 1910, by the science press 



