Bui. 41, Div. of Entomology, U. S. Dept. of Agriculture. 



Plate XI. 



Fig. 1.— Gasoline-power Sprayer, Showing the Engine and 

 Spray Pump. 



Fig. 2.— Gasoline-power Sprayer as it was Improved During the Season. 



Fig. 3.— Same Sprayer as in Fig. 1, but Seen from the Other Side, 

 Showing Filling Pump and Attachments. 



GASOLINE-POWER SPRAYING MACHINES. 



