328 
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,. 57-662 
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 13-95 
Casein,. 5-75 5*52 
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, 
Dry,... 
Casein, 
Butter, 
Sugar, 
86-70 
13-30 
5-42 
5-07 
3-00 
* The sugar was lost—the numbers supplied by adding the butter and casein obtained, and subtracting from the 
dry milk. 
I 
