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American Milk- Condensing Factories. 
water level in the basin C, to which the condenser is connected 
by the stand-pipe F. The water rises in the latter to about 
Fig. 3. — Improoed Cast-iron Vacuum-Pan. 
30 feet, more or less, according: to the amount of vacuum, and is 
held therein by the atmospheric pressure on the surface of the 
water in basin CI, the condensing water added flowing off from 
