52 



INSECTICIDES AND SPRAYING 



working parts of brass or bronze. Leather or rubber valves are 

 not used in the best pumps. Cylinders lined with porcelain are 

 not desirable. A farmer or fruit 

 grower with a medium-sized or- 

 chard should be willing to pay 

 anywhere from $12.00 to &20.00 



FIG. 72. Bucket pump. 



FIG. 74, A barrel spray pump, showing agitator. 



FIG. 73. A knapsack sprayer. 



for a good pump. A pur- 

 chaser should insist on see- 

 ing the inside of a pump 

 before buying. In getting 

 the more expensive pumps, 

 several growers might unite, 

 thereby being enabled to 

 purchase a good article with 

 comparatively small expense 

 to the individual. 



Some Good Types of 

 Sprayers. Figures 74 , 75 

 and 76 illustrate types of 

 barrel piimps, and figure 

 77 a double-action pump. 

 Figure 78 is a combination 

 barrel pump and cart, and 

 figure 79 a one-man outfit, 



