The 



Pi ant World 



A Magrazine of General Botany 





VOLUME 16 





NUMBER 12 





DECEMBER 1913 









Notes on Root Variation in Some Desert Plants 



By W. A. Cannon 



323 



Illustration of the Effect of Previous Vegetation on a Following Crop: 

 Cabbage after Sesame 

 By J. J. Skinner 



342 



Books and Current Literature 



347 



Notes and Comment 



350 



PUBLISHED UONTBLT 



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Entered aa second-claiis matter March 9, 1912, at the poat office at Baltimore, Marylaod, under the Act of July 16. 1894 



