FARM SEPARATORS. 155 
thereby enabling him to detect any mistake which may happen 
at the creamery. 
Power for Farm Separators——Hand-power is often men- 
Fic. 88.—The Dairy Queen hand separator. Fie. 89.—Xcales. 
tioned as an objection to farmseparators. When a considerable 
quantity of milk is to be skimmed, it is certainly hard work 
to skim with hand-power. Windmills could not well be used 
ee 
Fic. 90.—Tread-power attached to United States hand separator. 
as they do not give uniform speed. The power must be steady 
and uniform. Farm separators are often run with tread- 
power. This kind of power is very applicable, and does not cost 
