New York Agricultural Experiment Station. 383 



folds by unhooking two braces. The wagon is all steel. The front 

 part of the platform is raised to allow the front wheels to cut under. 

 On the front end of the platform in Fig. 48 is shown a tank pump 

 used in filling the spray tank. One-and-two-horse outfits are also 

 furnished with crop-sprayer attachments. In the latter, shown in 

 Fig. 47, the agitator is worked by chain gearing from the wheel. 



kerosene sprayers. 



The spraying of trees with either crude petroleum or kerosene for 

 San Jose scale has been practiced in some quarters. Oil may be used 

 either clear or emulsified with water. The treatment is generally 

 efifective against the scale but it is not entirely reliable as there is 

 possibility of injuring the trees and sometimes they are killed by the 

 oil. Difificulty lies in applying enough oil but no more than is needed 

 to coat the tree evenly. In spraying pure oil, experienced sprayers 

 endeavor to guard against applying an excess of the oil by having 

 the smallest possible aperture in the nozzle cap. An emulsion of oil 

 and water is somewhat safer. This application is made by specially 

 designed oil and water pumps. These are simply adaptations of 

 other spraying outfits and in most cases the oil attachment is readily 

 detachable and the rest of the outfit can be used for spraying bor- 

 deaux mixture. The Deming Co. makes the Success kerosene bucket 

 sprayer which differs from their Success bucket sprayer only in the 

 addition of a can for oil. This is set inside the pail and is suitably 

 connected with the pump. 



Knapsack kerosene sprayers are constructed on the same principle, 

 but generally the oil tank is outside and back of the main tank. Each 

 tank may be fitted with independent pumps operated by a common 

 lever or one pump may draw from both tanks. 



Leggett & Bro. make a churn sprayer of various sizes from one to 

 ten gallons capacity, especially for spraying oil and water and also 

 for spraying bordeaux mixture. The tank is charged with an air- 

 pump with which each sprayer is fitted. 



