MILK AND CREAM AT FARM 235 



hand separators, and the general convenience it affords, 

 have made power an actual necessity upon progressive 

 dairy farms. 



The kind of power needed upon a dairy farm depends 

 upon certain conditions. If a tread power is used for 

 exercising the bull, this will serve satisfactorily for sep- 

 arating milk, pumping water, and doing other light work. 

 In recent years gasoline engines have become very popu- 

 lar. A two horse power engine will serve very satisfac- 

 torily for running the cream separator, pumping water 

 and doing other light work such as running the wash 

 machine, grindstone, etc. 



Power not only affords great convenience upon a farm 

 but will also curtail the running expenses. 



If, for example, we assume that one hour is required 

 daily in running the separator, and another in pumping 

 water for stock, the total time consumed in this work in 

 one year would be 730 hours, or 73 days of 10 hours each. 

 At $i a day, the cost of separating and pumping would 

 amount to $73 a year. With a gasoline engine running 

 the pump and separator at the same time, this work could 

 be done in 365 hours. Allowing 6c per hour for gasoline 

 and oil, which is a high estimate, the cost of doing the 

 above work with an engine would be $21.90, or less than 

 one-third of what it can be done for with hired labor. 

 This saving is equivalent to about 25 per cent, on the in- 

 vestment of the engine, if used for no other purpose than 

 separating milk and pumping water. 



The fuel cost of running a gasoline engine may be 

 stated as follows : When gasoline is worth loc per gallon, 

 gasoline power will cost ic per brake horse power per 

 hour. 



