720 ANNUAL REPORT OF NEW-YORK 



Analysis of Excrement^ by Professor Way. Per cent. 



Moisture, _ 84.85 



Phosphoric acid, .39 



Potash, ._ .58 



Soda, .22 



Other substances,.. , 13.96 



100. 



Nitrogen, _ .41 



Ammonia, _ _ 49 



Manure 88 lbs. per cow per day. 



For 6 cows per day 528 lbs. = 3696 lbs. per week. 

 " for 27|- weeks 101,028 lbs., containing 



of Nitrogen, __. 414 lbs. 



Phosphoric acid, 393 



Potash, ...._._ 585 



Nitrogen incorporated in food, 888 lbs 



Casein, __ 316, 



Fibrin, _ 7.35 



Manure, 414. 



Balance consumed in perspiration, 150.65 



888.00 

 The materials of food are shown to have cost — £10.0s. 9d. 



£. s. d. 

 Gross value 16,072 quarts of milk, at 2d. per quart, 133 18 8 



Gain of weight 500 lbs., at 6c^. per lb., 12 10 



£i. s. d. 

 Nitrogen in manure 414 lbs. = Ammonia 



494 lbs. at 6c^.,.. 12 7 



Phosphoric acid 393 lbs. at l^d. per lb.,._ 2 9 1 



Potash 585 lbs. at 3t^. per lb.,.. 7 6 3 



22 2 4 



iil68 11 



Manure per cow per day 88 lbs., per week 616 lbs. s. d. 



Containing ammonia 3 lbs., 1 6 



Phosphoric acid 2.40 lbs.,.. 3i 



Potash 3.57 lbs., lOi 



Value of a cow's excrement, per week, 2 8 



