#50 



A Nciv Dairy Industry. 



ns of the quantity of dirt- remaining in the average 

 stable-strained milk. Take a clean glass vessel, of 

 the shape shown at Fig. 24, and containing about one 

 gallon of the fresh strained milk, fasten six inches of 

 rubber tube over the mouth of the bottle and a small 



K 



Fig. 24-TESTING FILTH IN MILK. 



glass test tube to the other end of the rubber tube, 

 turn upside down, place in a suitable rack and let it 

 remain standing for twelve hours. The dirt con- 

 tained in that milk has now settled down to the 

 bottom of the small glass tube ; this is removed by 

 tightly closing the rubber tube with thumb and index 



