Dairy Management. 



159 



that analysed by Haidlen. Several analyses by other chemists 

 show a less percentage, 4 to 4"50. As my cows are adequately 

 supplied with albuminous matter, I have a right to presume on 

 their milk being rich in casein. 



The loss of nitrogen by perspiration, 1.50'65 lbs., is nearly 17 

 per cent. Boussingault found a loss of 13"50 of nitrogen in a 

 cow giving milk. 



The abstraction of nitrogen in tlie mi!k is computed 



at 3]6 lbs., valne 9 9 



Tlie abstraction of phosplioric acid in the milk is 



computed as 482 lbs 58 



Either the rape-cake or bran alone suffices for the restoration of 

 the phosphoric acid. 



The amount of phosphoric acid in the manure is 393 lbs., 

 being about IG per cent, of the whole ash or mineral matter. 

 The ash of meadow-hay contains about 14 per cent. : that of rape- 

 cake, 30 per cent. ; bran, 50 per cent. ; malt combs, 25 per cent. ; 

 turnips, &c,, 10 per cent, of phosphoric acid. 



The amount of potash in the excrement is 616 lbs., being 

 about 25 per cent, of the whole ash or mineral matter. The 

 ash of meadow-hay contains about 20 per cent, ; rape-cake, 21 

 per cent. ; malt-combs, 37 per cent, ; turnips (various), 44 per 

 cent, ; from which it may be inferred that the sample of excre- 

 ment sent to Professor Way for analysis did not contain more 

 than a fair proportion of these ingredients. 



To ascertain the quantity of excrement, the contents of the 

 tanks into which the cows had dropped their solid and liquid 

 excrement during five weeks were weighed, and found to be 

 500 cwt. 2 qrs. lbs. from 18 cows, being 88 lbs. per cow per 

 day. The sample for analysis was taken from that which the 

 cows had deposited within the preceding 24 hours. This was 

 collected in the mud-cart, well blended, and sent off quite fresh. 



It is sufficiently proved by the experience of this district, that 

 20 lbs. of meadow-hay suffice for the maintenance of a cow of 

 fair size in store condition : a like result is stated to be obtained 

 from 120 lbs. of turnips per day. The six cows will have then 

 required during the 27^ weeks for their maintenance only — 



