CHURNING AND WASHING BUTTER. 255 



If the intermittent process is used, the first water filtered 

 after the intervening period should not be used. During the 

 intermission, or during the time that the water is shut off, 

 germs develop and come through the filter-bed with the water 

 that is filtered. 



Advantages of Purifying Wash-water for Butter. — The chief 

 advantage of purifying wash- water for butter is that the keeping 

 quality of the butter is improved, and if the proper skill and 

 care have been applied in the other steps of manufacture, a pure 

 sanitary product is obtained. The sanitary efficiency reached 

 by purifying the wash-water constitutes no small consideration. 

 Germs producing contagious diseases are thus checked from 

 spreading. 



