360 Report of the Horticultural Department of the 



tion from which the highest branches may be reached. In some cases 

 the workmen stand or sit on the top of the spray tank. See Figs. 40 

 and 41. In others an elevated platform is built, which is provided 

 with a railing to prevent the workmen from being thrown off. See 

 Fig. 44. Towers are simple in construction and require no further 

 description. 



TRUCKS. 



High wheels behind, 60 to 70 inches in diameter, give a decided 

 advantage in driving over soft ground. See Fig. 39. It is almost 

 necessary however to have the front wheels low enough to cut under 

 the platform for convenience in turning short. With heavy outfits 

 it is best to use wide tires ; on soft ground they are almost a necessity. 

 Those 5 or 6 inches in width are most often used, but some use 7- 

 inch tires. 



Bolster springs are a desirable addition to heavy outfits. They 

 make the load easier on both horses and wagon. See Fig. 39. 



STRAINERS. 



The nozzles are less liable to become clogged when all mixtures 

 are strained into the tank. For this purpose brass wire cloth of about 

 20 meshes to the inch is best. Burlap is unsatisfactory because the 

 lint from it clogs the nozzles. A strainer should also be attached to 

 the end of the suction pipe. It is well to have this in the shape of a 

 hood two or three times the diameter of the pipe. 



The Loop separator. — This is an attachment for straining the liquid 

 as it enters the hose. It is described on p. 355. 



TANKS. 



The best tanks are constructed of cypress, pine or cedar, the first 

 named being the most durable. Their durability may be increased 

 by applying a coat of paint on the inside. This application has the 

 further advantage of preventing the wood from becoming water 



