Bui. 108, U. S. Dept. of Agriculture. 
Plate III. 
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Fig. 1.— Effect of Salicylic Aldehyde on Cabbage Seedlings in Nutrient 
Solutions. 
(1) Nutrient solution; (2) same plus 10 parts per million salicylic aldehyde; (3) 25 parts 
per million; (4) 50 parts per million. 
Fig. 2.— Effect of Salicylic Aldehyde on Wheat in Soil. 
(1) Clay soil; (2) same plus salicylic aldehyde 10 parts per million; (3) 25 parts per million; 
(4) 50 parts per million; (5) 100 parts per million. 
