1882.] SETTING MILK. 301 



The specially tardy rising of cream when deep set, seemed to 

 have connection with the fact, that under the microscope the fat 

 globules were not separate, but collected in little bunches. 



There were only three possible points which could assist in 

 explaining the behavior of the milk; the cows were all near the 

 end of the period of lactation, they had just changed from sum- 

 mer to winter feed, and the dust from the chafE got into their 

 milk. 



All the experiments, however, indicate that the greater part of 

 the cream is secured after twelve hours' standing. 



The increase of yield of that which stood twenty-four hours, 

 deep set, over that which stood twelve hours, was : 



In the First trial, 4.2 per cent. 



Second trial, 4.8 per cent. 



Third trial, (9.3 per cent.) 



Fourth trial, 5.7 per cent. 



Fifth trial, 5.6 per cent. 



Seventh trial, .... 7.0 per cent. 

 The increased yield in thirty-six hours over that in twenty-four 

 hours, deep setting, was : 



In the Fifth trial, 1.1 per cent. 



Seventh trial, .... 1.9 per cent. 

 "With shallow setting and higher temperature there was an in- 

 crease after twenty-four hours : 



In the Sixth trial of .... 13.7 per cent. 

 Eighth trial of . . . 14.4 per cent. 

 over the yield in twelve hours; and after thirty six hours: 

 In the Sixth trial of .... 9.2 per cent. 

 Eighth trial of ... 4.5 per cent. 

 over the yield in twenty-four hours. 



And with shallow setting the yield was greater than with deep 

 setting: 



After 12 hours. 24 hours. 36 hour*. 



In the Sixth trial, 14.7 22.9 30.9 



Eighth trial, ... 3.2 10.7 13.3 



From these experiments it is evident that a change of feed may 

 create disturbances in the milk which are much more injurious 

 with deep than with shallow setting. There is no reason to sup- 

 pose that the low temperature makes this difEerence. It is more 

 likely that it is due to the fact that the butter globules which 

 cohered abnormally, and so were hindered in their movement, have 



