Grade 



Date 



(58) EXERCISE 37. 



Object. — To see the effects of over-working butter. 



Apparatus. — Same as in other churning exercises. 



Step 1. Churn and otherwise care for the cream as in the first churning 

 exercises until the butter is ready to work. 



Step 2. Work butter until it seems to be worked enough; note its condition. 

 Break a few lumps and note the grain. Then continue working, noting 

 the condition of the butter every five revolutions of the worker. Con- 

 tinue working until the butter is much over-worked. Record data. 



Report. 



Well worked 



Additional 5 revolutions 



10 revolutions 



15 revolutions 



20 revolutions 



25 revolutions 



30 revolutions 



35 revolutions 



Make special notes regarding this churning operation. Make record on 

 following page. 



