$28 ON THE MILK OF THE COW. 



quality, in the main, of this milk, it is the amount of inorganic matter it contains, being quite 

 as large as that from milk less watery. 



I made an analysis of the ash, and give below the result. 



Potash 23-896 



Soda, 3-833 



Alkaline and earthy phosphates 67-662 



Chlorine 13-760 



Insoluble matter, 0-260 



In this milk the specific gravity was low, the water was comparatively large, the casein, for 

 winter milk, small, and yet the percentage of ash large. 



I wished to ascertain the quantity of grains which may be fed profitably to cows. Before 

 making my experiments directly, I analyzed the milk, in order to determine its condition at 

 the commencement of the experiment. I found it as follows, on the 1st of February : tem- 

 perature, 12°, 10°, 8° below zero of Fah. for three successive mornings. 



Water, 86-92 



Dry 13 • 07 



Casein, 4*56 



Butter, 6-63 



Sugar 1-87 



I employed, in the first instance, half a bushel of grains, mixed with cut hay, for three or four 

 days : the temperature was 8° below zero. I analyzed the milk of two successive mornings, 

 and find it as below. 



Water, 84-85 86-05 



Dry, 15-15 1395 



Casein, 5-75 552 



Butter, 5-27 5-54 



Sugar *4-15 3-29 



The grains were increased to a bushel per day, and fed with the same quantity of hay which 

 I had been giving. The weather became much milder, and the temperature was about 32° 

 during the whole time : the cow was receiving one bushel of grains per day. The 11th of 

 February I found the milk consisted of the following elements : 



Water, 86-70 



Dry, 13-30 



Casein, 5 * 42 



Butter, 507 



Sugar 3*00 



• The sugar was lo»t — the numbers supplied by adding the butter and casein obtained, and subtracting from th» 

 dry milk. 



