July, 1908.] 



CATEKPILLARS INJURING FOLIAGE. 



22; 



types of liarrel pumps are now on the market and can be ob- 

 tained through seedsmen, agricultural warehouses or direct from 

 the manufacturers, for whose addresses see the agricultural pa- 

 pers or Bulletin 131 of this station. Buy a pump with as little 

 of its working parts above the head as possible; with cylinder 

 and valves of brass, and other parts of malleable or galvanized 

 iron — castings are always breaking ; with a good mechanical agi- 



Fig. 13. The Vermorel nozzle. 



The Bordeaux nozzle. 



tator — not a return jet — which can be operated by itself with- 

 out pumping at the same time. The ease with which a pump 

 may be removed from the barrel, and with which the working 

 parts, such as the valves and cylinder, are reached and removed 

 for cleaning or adjustment, are important points. A good bar- 

 rel pump should have a large air chamber so that a steady pres- 

 sure of 75 pounds can be maintained with four nozzles. A good 

 pump with hose and 10-foot bamboo extension rod, and nozzles, 

 can be purchased for from $15 to $30. 



A good nozzle is of next importance, and many beginners fail 

 to secure good results in spraying through buying a cheap nozzle 

 from some local dealer. The two types of nozzles shown in fig- 

 ure 13 are the best for orchard work. ]\Iany similar types 

 slightly varying from these are on the market, each having its 

 advocates, and all doing fairly satisfactory work. The Vermorel 



