398 APPENDIX. — horsfall's system. 



Production of milk by 6 cows, average 14 quarts per 

 day each, for 27^ weeks = 16,072 quarts, which at 41 

 oz. per quart = 41,184 lbs. 



lbs. 

 When dry or free from moisture, 5230 



Butter in 16,072 quarts, at 30 per 1000 = 1235 



Caseinein " " " 48.2 per 1000, =1977 



Sugar of milk, = 1804 



Minerais.{^P ha ^° nime ; ; ; ; ; ; ; ; jg } = 214 



5230 

 Gain of weight 500 lbs., of which I compute 300 lbs. as fat. 



200 lbs. as flesh. 



500 



Nitrogen, 316 lbs. 



Phosphate of lime, 99 



Phosphoric acid, — 45.50 



Cost of food per cow per week, . 85. 6£c?. 

 When the yield of milk is less, the cost of food is reduced to 7*- tid 

 per week. 



5. d. 



Gross return in milk, 16 4 



" " " weight, 16 



" *« " manure, 2 8 



20 6 



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 i weeks 101,028 lbs., containing of 



Nitrogen, 414 lbe 



Phosphoric acid, 393 



Potash, 585 



