CARE OF MILK AND CREAM 



45 



prevents dirt from washing into the tank. The top of the 

 walls of the tank should be faced with strap iron to prevent 

 the cans cracking the cement as they are lifted in and out. 

 Some outlet should be provided in the bottom of the tank 

 so that it can be easily and thoroughly cleaned as often 

 as may be necessary. It is almost impossible to prevent 

 milk from spilling into a cooling tank of this sort, and 

 unless this is cleaned out, the tank soon becomes unfit for 

 use from a sanitary standpoint. Outlets should be made 



COOLING 

 -zz 



FIG. 11. A tank for cooling cream. 



at the top of the tank in order to carry off surplus water 

 and to prevent the cans from being flooded." 



A heavy wooden top should be employed to keep out the 

 warm air. 



The tank shown in Figs. 11 and 12 is convenient. 

 Notice how the water is guided to the bottom of the tank 

 when it enters, and that the outlet is at the top. This 

 method of delivering the inflowing water at the bottom 

 produces a much more efficient cooling process than when 

 the water simply flows into the top of the tank. 



