136 Extracts from the Journals. [Jan., 



The first experiments were merely preliminary, and were intend- 

 ed to determine the average quantity of milk per day. She was 

 then pastured in a meadow about half a mile from the cow-house. 

 The time of the experiments was in October. For five days the 

 average morning's milk was nearly 5 quarts, and the average 

 evening's milk a little over 4 quarts. The milk to be analyzed 

 was taken from the pail and well stirred. 



At the first experiments, the cow was kept in the meadow upcn 

 grass. The first milk analyzed was the evening milk, of which 

 4 quarts were obtained. Sp. gravity, 1.034. 100 parts gave 



Casein, .... 5.4 



Butter, .... 3.7 



Sugar of milk, . 3.8 



Ashes, .... 0.6 



Water, .... 86.5 



100.0 



This day the cow had much exercise, which occasions a consump- 

 tion of oxygen, which consumes the butter. 



In the morning, the cow having ate nothing, gave 4^ quarts of 

 milk. Sp. gravity, 1032; which gave, on analysis. 



Casein, .... 3.9 



Butter, .... 5.6 



Sugar of milk, . 3.0 



Ashes, .... 0.5 



Water, .... 87.0 



100.0 



It will "be observed that the amount of casein is less, while the 

 butter is increased. 



2d day. The cow was put into the stall, but refused to eat, and 

 struggled much to break away and gain her liberty. She was 

 tranquilized by giving her a companion, when she ate 28 lbs. of 

 good hay and 2^ quarts of oat meal. 



In the evening she gave 3.^ quarts. Sp. gravity, 1031. On 

 analysis it yielded 



Casein, .... 4.9 

 Butter, .... 5.1 

 Sugar, .... 3.8 

 Ashes, .... 0.5 

 Water, .... 85.7~ 



100.0 



The next morning the milk was spilled. 



3d day. Cow confined in the shed; consumed 28 lbs. hay, and 



