460 



A AT ECONOMIC ENTOMOLOGY. 



Fig. 477- 



is more satisfactory than this, because it gives the greatest range 

 in distance and in quantity of discharge. Even if the spray is 



coarser than with the other nozzles, 

 the work is more rapid. Practically, 

 it will not be necessary to go beyond 

 the nozzles already described to ob- 

 tain satisfaction. 



The Vermorel modification of the 

 cyclone nozzle is manufactured by 

 almost all makers of insecticide 

 machinery, and can be obtained 

 anywhere. The graduating nozzle 

 may be purchased in almost any 

 hardware store, or wherever lawn 

 sprinklers and garden hose supplies 

 are sold. The Nixon nozzle is 

 patented, and obtainable from the 

 Nixon Nozzle and Machine Com- 

 pany, Dayton, Ohio, or from their 

 agents. The McGowen nozzle is 

 also patented, and obtained only 

 from J. J. McGowen, Ithaca, New York. There are many other 

 nozzles on the market, all of which have certain advantages, 

 from which the farmer must himself select those most useful to 

 him. So there are special nozzles for certain purposes, as that 

 for spraying the lime, salt, and sulphur mixture used on the 

 Pacific coast. All these are advertised by dealers in spraying 

 machinery, so that the intending purchaser can secure full in- 

 formation. 



For spraying certain field crops on a large scale — e.g., pota- 

 toes—there is a tendency to use geared machines, — that is to say, 

 tanks mounted upon a cart, and the pump geared to the axle, so 

 that in simply driving through the field it will be operated. Then, 

 by means of an extension rod fitted with nozzles, from four to 

 six rows of potatoes or other plants can be sprayed at one time. 

 Several manufacturers make machines of this character, and a 

 great many of them are in use, giving satisfaction, as a rule. 

 They have the advantage of covering a great area in a very short 

 time, and reducing the cost of spraying to a minimum, doing the 



A graduating nozzle. 



