44^ AGRICULTURE OF MAINE. 



should be in 25 or 50 foot lengths, varying with the height of 

 the trees and the distance they are set apart. If the operator 

 stands on a tower built on the spray cart shorter lengths of hose 

 are necessary. 



A bamboo extension rod carrying the nozzle and with a non- 

 corrosive metal tube in the center should be used on the end 

 of the hose. The end of the rod nearest the operator should 

 be provided with a shut-off which can be easily manipulated, and 

 at the farther end the tube should be slightly bent or be pro- 

 vided with an elbow which will incline the nozzle somewhat 

 out of the straight line of the rod. This latter will better enable 

 the operator to direct the spray where it will do the most good. 



All types of nozzles which throw a coarse or relatively coarse 

 spray should be avoided. The ideal nozzle delivers the spray 

 in a fine mist or fog. The Vermorel type has long been a 

 favorite but in recent years several improvements on this have 

 appeared. These are constructed on the same general plan but 

 some of them are larger, simpler in construction and give 

 equally as fine or finer mist, cover a larger area and for that 

 reason are better adapted to rapid work with power machines. 



Care of spraying machinery: After each time using all spray 

 material should be washed out of the pump, pipes and nozzles 

 by pumping a quantity of clean water through them. This not 

 only materially adds to the life of the apparatus but trouble 

 from clogged nozzles from particles of the dried sediment will 

 be avoided when needed again. In summer when not in use 

 the tank should be kept partly full of water. When through 

 for the season the tank and pumps should be entirely freed of 

 water to avoid damage from freezing in cold weather. 



