Jul. 164, U. S. Dept. of Agriculture. 
Plate IV. 
■. 
Cow 
Peas 
jyjB 
I Untreated 
fcr^ 
•- j 
*£ a " ;,li " 
Bk 
\*^pi 
RPv 
^ 
Fig. 1.— Yield of Cowpeas, Vines, and Pods on Check Plot a and on Vanillin- 
Treated Plot. 
Garden Peas 
»., Vanillin 
Fig. 2.— Yield of Garden Peas, Vines, and Pods on Check Plot a and on Vanillin- 
Treated Plot. 
3+>-'r>£, Bean; 
Untreated 
r <s %a 
Fig. 3.— Yield of String Beans, Vine., and Pods on Check Plot a and on 
Vanillin-Treated Plot. 
