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*66 



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 



Su^r •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 foimd the milk consisted of the following elements : 



Water, 86*70 



Dry 13-30 



Casein 5*42 



Butter 5-07 



Sugar 3-00 



* The (ugar wu loit — the numben aupplied by adding the butter and caaein obtained, and lubtracting from the 

 irj mUk. 



