VI l] 



B UTTER-MAKING 



119 



follow their tendency to collect on the surface without 

 disturbance. The higher the temperature of the milk 

 the less is the resistance offered to the separation of 

 the globules. It may be further pointed out that 

 lactic fermentation is unfavourable for separation. 



FIG. 18. DROP OF CREAM shortly before end of churning. 

 (Kirchner.) 



The sooner, therefore, after milking, the milk is set, 

 the better, since the conditions for its separation are 

 more favourable during the first few hours than 

 subsequently. 



The rate at which the globules separate is not 

 equal. During the first hour or two most of the 



