APPLE GROWING 



ground. Such an outfit is also rather expensive. 

 Standard makes of gasoline engines of sufficient 

 power for spraying cost from $75.00 to 

 $150.00 according to horsepower and efficiency. 

 For very large trees, for mature orchards, and 

 for all orchards larger than four or five acres, 

 the gasoline engine Is the best source of power 

 for spraying, particularly where it can be used 

 for other purposes on the farm. 



A double acting or two cylinder pump is most 

 desirable. If there Is plenty of power a triplex 

 or three cylinder pump is still better. The re- 

 quirements of a good pump are : sufficient power 

 for the work desired of it; strong but not too 

 heavy; fewest possible number of parts con- 

 sistent with efficiency; brass parts and valves; 

 and a good sized air chamber. A number of 

 standard makes of pumps answer these con- 

 ditions very well. Pumps should always be 

 washed out with clean water when the operator 

 IS through with them and the metal parts coated 

 with vaseline. Never leave water in a pump 

 chamber or In the engine jacket in cold weather. 



The ordinary hand pump and barrel give 



satisfactory use when placed on a wagon, unless 



the trees are very high. But for large orchards, 



high trees, and where larger tanks and power 



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