Bui. 111, Bureau of Entomology, U. S. Dept. of Agricultur 
Plate VI \\. 
Fig. 1.— Power Outfit on Narrow Truck, in Use in Hopyard. (.Original.) 
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Fig. 2.— Filling Power Outfit from Improvised Supply Wagon. (Original. 
SPRAYING AGAINST THE HOP APHiS. 
