SPRAYING AND SPRAYING APPARATUS. 129 



a stone-boat will often not be able to get down the row, to say 

 nothing of the impossibility of getting through with a power 

 outfit. 



Kinds of Spraying Outfits. For spraying on a very small 

 scale, the knapsack, bucket pump, and five-gallon compressed 



Fig. go. One of the many types of sprayers with power from a gaso- 

 line engine. 



air outfits are very serviceable. The cheapest and most gen 

 erally useful spraying outfit on areas up to five acres is a first- 

 class oil barrel set upright on a stone-boat with a good spray 

 pump fastened on it. On larger areas up to 15 or 20 acres the 

 wagon tank with a horizontal hand pump is more practicable, 

 since it has greater capacity and efficiency. On areas of over 

 twenty acres the air-cooled gasoline outfit will usually be a good 

 investment. It relieves the laborious work of pumping by hand, 

 and correspondingly reduces the working force necessary and 

 gives a higher pressure. With a little mechanical ingenuity 

 and care on the part of the operator it should be easily kept 

 in good working order. 



