FROM THE PRACTICAL VIEWPOINT 



FIG. 26 



ment at one end of the tank, and when the com- 

 partment is full, the milk flows into the gathering 

 trough and is carried by means of the tube to the 

 bottom of the succeeding compartment. Here the 

 same routine is repeated till all the compartments 

 are full. Then the flow becomes continuous till 

 all the milk is pasteurized. When all the milk has 

 left the heater, of course the flow from the holder 

 stops. The tanks are at this time all full, and 

 it is then necessary to remove the plug which is 

 125 



