96 



INJURIOUS INSECTS OF 1904. 



its excellence. A good pump is one whose parts do not easily cor- 

 rode. The working parts should be of brass. Leather or rubber 

 valves are not used in the best pumps, but are replaced by brass valves. 

 Cylinders lined with porcelain are not desirable. 



A farmer or fruit grower should be willing to pay anywhere from 

 $9 to $20 for a good pump. Automatic and power sprayers, for use 

 in large orchards, and on extensive field crops (See Figs. 97, 98, 99, 

 100) come much higher. He should insist upon seeing the interior of 

 a pump before buying. Several might unite in buying a pump, there- 

 by being able to purchase a good article with comparatively small 

 expense to each individual. 



Fig. 94. — A Barrel Cart. 



Connections of good hose are important, and poor hose should be 

 avoided ; three-ply and four-ply are generally used, but where great 

 pressure is to be planned for, five-ply or even six-ply is desirable. Hose 

 can be bought of any length, and where trees of some height are 

 to be sprayed (10 to 20 feet) extensions are n'ecessary. These can be 

 bought of various lengths, and consist either of metal pipe alone to 

 the ends of which the hose and nozzle is attached, or the same encased 

 in bamboo. Drip guards which encircle the extension just below 

 the nozzle, or just above the point where it is held will add to the 



