New York Agricultural Experiment Station. 365 



cannot be thoroughly sprayed while the outfit is passing it they are 

 not so satisfactory, because the pressure begins to go down as soon as 

 the rig stops. Moreover, the pressure required for doing the best 

 work on large trees cannot easily be maintained with horse-power 

 outfits even when no stops are made. 



The Deming Co. makes an outfit (see Fig. 35) especially designed 

 for spraying field crops, as potatoes. It has a steel channel frame 

 mounted on two large steel wheels. The pump is geared to a sprocket 

 wheel on the axle, to which also the agitator is independently geared. 

 There is a clutch to throw the pump out of gear. The pump may also 

 be operated by hand for use in orchards. The crop-spraying appara- 

 tus behind consists of a horizontal piece of tubular iron from which 

 a pipe descends backward to each of the three nozzle holders, which 

 are mounted on little wheels with a cross bar, each carrying two noz- 

 zles. These are adjustable to throw the spray upward according to 

 the height of the plants. Any or all of the nozzles can be cut ofif by 

 stop cocks and the whole crop-spraying attachment is raised by a 

 lever. 



E. C. Brown & Co. make an outfit especially for potatoes, put 

 together on much the same principle as the Deming outfit, but the 

 tank used is a square box and the crop sprayer has only one jet to 

 each row. The capacity of the tank is sixty gallons. 



The same company makes a two-horse, five-row potato sprayer 

 (Fig. 36) with a double-cylinder pump and a tank capacity of 100 

 gallons. This outfit has direct pitman connection and positive drive 

 from both wheels. In both of these outfits the nozzle carrier exten- 

 sions are so constructed that they fold to an upright position when 

 going to and from the field or turning at the end of the row. A simi- 

 lar outfit designed especially for vineyard work has a capacity of 60 

 gallons, and a larger one has a capacity of 100 gallons. 



The same compan}^ also makes a one-horse outfit (Fig. 53) espe- 

 cially suitable for narrow row plantations, such as nursery stock, 



