THE MANUFACTURE AND HANDLING OF BUTTER. 249 



temperature, and the churning is then conducted by a very 

 ingenious arrangement. The fine granular butter which 



FIG. 30. 



drops from the apparatus may easily be worked in the 

 ordinary manner. 



Preservation of Butter. Butter being an expensive and 

 very delicate article of food, it has of course been the ob- 

 ject of adulteration and admixtures of preservatives. 



