ANALYSES OP INGREDIENTS. 399 



Nitrogen incorporated in food, 888 Ibs 



Caseine, 316. 



Fibrin, 7.35 



Manure, 414. 



Balance consumed in perspiration, .... 150.65 



888.00 

 The materials of food are shown to have cost . . 70 0$ 9rf. 



. 5. d. 



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

 Gain of weight 500 Ibs., at Qd. per lb., 12 10 



Nitrogen in manure 414 Ibs. = Ammonia . s. d. 



4941bs.,at6rf., 12 7 



Phosphoric acid 3 ( J3 Ibs., at l^d. per lb., . 291 

 Potash 585 Ibs., at 3rf. per lb., .... 763 



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



The analyses of the chief ingredients of my own 

 produce, or such extra materials as I usually purchase, 

 have been made by Professor Way ; for other materials 

 I have had recourse to a very useful compilation by Mr. 

 Hemming (vol. xiii., p. 449, of the Society's Journal), 

 and to Morton's " Cyclopaedia of Agriculture." The 

 analysis of straw is that of oat-straw ; that of green food 

 is derived from the analysis of rape-plant, cabbages, and 

 kohl rabi. During February and March I have been 

 using wheat and barley straw with mangold, and, as these 

 materials contain less oil, I give in the steamed lood 

 three ounces of linseed-oil per day to each animal. For 

 the composition of milk I adopt that by Haidlen, whose 

 method of analysis is reputed to be the most accurate, 

 the proportion of butter in my milk being this season 

 very similar to that given by him. 



It will be observed that this is the gross return for 

 twenty-seven and one third weeks from the time of 



