6^oc^c<^:^ 



VOLUME 21 

 :Nr U M B E R 4 



APRIL, 1918 



CONTAINING 



Some Factors Affecting Inulase Formation in Aspergillus Niger. V. H. 

 Young 75 



Effect of Bog and Swamp Waters on Swelling in Plants and in Biocol- 

 -loids. D. T. MacDougal 88 



Books and Current Literature 100 



Notes and Comment , . . 105 



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