Bui. 108, U. S. Dept. of Agriculture. 



Plate IV. 



Fig. 1.— Effect of Salicylic Aldehyde on Corn in Soil and Sand. 



(1) Clay soil; (2) same plus 50 parts per million salicylic aldehyde. (1) Sand; (2) same plus 

 50 parts per million salicylic aldehyde. 



Fig. 2.— Effect of Salicylic Aldehyde on Clover in Soil. 

 (1) Soil untreated; (2) soil with a total of 100 parts per million of salicylic aldehyde. 



