248 



THE dairyman's MANUAt. 



dollars and the pool was large enough to hold 200 quarts 

 of milk. The plan is shown by the diagram (figure 41), 

 in which a section across the house and pool is shown. 

 , This house is twelve feet square. The pool was sunk 

 until a bubbling spring was reached, and the bottom was 

 paved with flat stones loosely placed, the water rising 

 through the spaces between the stones until it flowed out 

 of a pipe at the top, shown at h, leaving a depth of 

 eighteen inches of water in the pool. As the water rises 



Fig. 41.— SPRING-HOUSE FOR MILK. 



suddenly when several twenty-quart pails of milk are 

 put into the pool, the outlet is made of three-inch glazed 

 drain tile, covered with wire gauze as a protection. The 

 drain discharges into a stream close behind the spring- 

 house. 



To cool 200 quarts of milk from seventy-five or eighty 

 degrees down to fifty-five, requires either consider- 

 able time or a good flow of cold water. With a flow 

 of two quarts per minute of water at a temperature of 

 fifty-five degrees, and an air temperature of eighty de- 

 grees, four hours are required to reduce the milk to the 

 temperature of sixty degrees, aod the temperature of 

 the milk cannot be reduced as low as that of the water 

 unless the pool is protected by a covering from the air. 

 It may thus bo found advisable to provide falling doors 

 to cover the tank when the water supply is not more 



