COMPOSITION OF MANURE. 



401 



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 

 pounds, being about sixteen 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., and turnips, &c., 

 10 per cent, of phosphoric acid. 



The amount of potash in the excrement is 616 

 pounds, 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 excrement 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. Ibs , from 

 18 cows, being 88 Ibs. 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 pounds 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 pounds of 

 turnips per day. The six cows will have then required, 

 during the 27J weeks, for their maintenance, only 



They will further have required adequate food 

 34* 26 



