

A MsL^azlne of General Botany 



VOLUME 19 

 NUMBER 12 

 DECEMBEB, 1916 



CONTAINING 



Antagonism Between Manganese and Iron in the Growth of Wheat 



W. E. Tottingham and A. J. Beck 359 



The Effect of Vanillin and Salicylic Aldehyde in Culture Solution and the 

 Action of Chemicals in Altering their Influence 



J- J. Skinner 371 



Books and Current Literature 379 



Notes and Comment 381 



PUBLISHED MONTHLY 



OFFICE OF PUBLICATION 



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BALTIMORE. MD. 



EDITORIAL OFFICE 



TUCSON, ARIZONA 



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Entered as second-class matter March 9. 1912, at the post oflace at Baltimore, Maryland, under the Act of July 16, 1894 



