198 THE CONNECTICUT POMOLOGICAL SOCIETY. 



Jet agitators are contrivances for diverting part of the 

 spray-liquid to the bottom of the barrel, where it is ejected 

 with force through a small opening. They are unsuited to 

 hand outfits for the reason that it is almost impossible to keep 

 up sufficient pressure at the nozzle while the agitation jets 

 are open. They may be of service with large outfits where 

 abundant power is available. 



Extension Rods. These are small metal pipes of vary- 

 ing lengths, with or without bamboo covering. The longer 

 ones are used for reaching the higher branches of trees, and 

 shorter ones for spraying beneath low-growing plants. One- 

 fourth or three-eighths inch brass or iron pipe is used for the 

 purpose. Brass pipe is decidedly better than iron. Eight 

 feet is probably the average length for spraying fruit trees, 

 but many twelve-foot rods are in use. Those covered with 

 bamboo are more rigid and decidedly easier on the operator. 

 The distal end of the rod should be equipped with a drip- 

 guard, to prevent the liquid from coming in contact with ihe 

 liands of the operator. The other end should be r-.quipped 

 with a stop-cock so that the liquid may be conveniently turned 

 off, or on, when desired. 



Hose. A four-ply, one-half inch hose is generally used 

 for orchard work, although some prefer three-eighths inch 

 size. For spraying fruit trees from the ground, twenty-five 

 to fifty foot lengths are used, while from a tower ten or 

 twelve foot lengths are sufficient. 



Nozzles. Three well defined types of nozzles are in gen- 

 eral use for spraying purposes : The Bordeaux, the Vermorel 

 and the Friend or Mystry. 



I. The Bordeaux type is represented by the Bordeaux, 

 Perfecto, Niagara and Seneca. Nozzles of this type may be 

 adjusted so as to throw a solid stream or a fan-shaped spray. 

 They are not suited to orchard spraying, nor for the spraying 

 of any trees that may be reached with an extension rod. They 

 are suitable for spraying very tall trees, like the elm, where 

 it is necessary to throw a solid stream to reach the top of the 

 tree. A stream produced in this way breaks up after leaving 

 the nozzle and forms a spray by the action of the air. 



