New York Agricultural ExrERiMENT Station. 359 



one-fourth or three-eighths inch brass or iron pipe fitted inside a bam- 

 boo rod. See Fig. 40. The length is commonly 8 feet but varies from 

 6 to 12 feet. Frequently three-eighths inch hose is used instead of 

 an extension rod. In such cases the hose is usually tied to common 

 stiff bamboo fish poles (as shown in Fig. 39) for reaching distant 

 points. Very good extension rods may be made by fitting a brass 

 pipe into a groove in a suitable piece of light pine. 



Extension pipes are similar to bamboo extension rods with the 

 omission of the bamboo itself. They are not so stiff or durable but 

 are cheaper. Their smallness is against them, because they cramp 

 the hands when used for a considerable length of time. They are 

 made in iron or brass, generally in 6 or 8 foot lengths. 



Drip guards are devices for protecting the hands of the operator 

 from the drip from the nozzles. They may be attached at the middle 

 of the rod or just under the nozzle or just above the hand of the 

 operator. A home-made shield may be made of any stiff leather. 



HOSE. 



Spraying outfits should be supplied with hose capable of withstand- 

 ing a pressure of at least 125 pounds to the square inch. Three ply 

 and four ply are most used but some prefer five ply or six ply. One- 

 half inch hose is most commonly used but some prefer a three-eighths 

 inch hose. There is much complaint of hose wearing out rapidly 

 under the strain of power pumps. To meet this difficulty some use 

 the less expensive three ply hose and buy a new supply each season. 

 Others buy stronger, more expensive hose. We are in doubt as to 

 which is the more economical course in the long run. As to the 

 length of- hose required in orchard spraying, from 20 to 50 feet is 

 used if the operator stands on the ground and 8 to 12 feet if he stands 

 on a tower. 



TOWERS. 



If the trees are so high that the tops cannot be sprayed from the 

 ground or the wagon, it is necessary to provide a more elevated posi- 



