Agricultural Chemistry — Sheep- Feedinr/ a7id Manure. 323 



that the extended use of malt would be of any material benefit 

 to the farmer. 



The animals on oil-cake, in pen 6, are seen to show a much 

 higher increase than those in any of the other pens. Since, how- 

 ever, they had not, at the commencement of the use of that food 

 (with the exception of a single animal), regained the weights as 

 at first put up, it is probable that the rapid increase afterwards 

 may unduly represent the effects of the oil-cake, so that we do 

 not much insist upon the comparisons they might otherwise afford 

 in relation to the question of increase, though the results will not 

 be open to objection on this account, when we come to the material 

 one of the manure produced. 



We now turn to a consideration of the composition of the several 

 foods consumed ; and in the following Table are given the results 

 of analyses in reference to their contents in dry organic substance, 

 in mineral matter, and in nitrogen : — 



SERIES IV. 



Table 5. — Showing the particulars of Sampling, and the per Centage of Dry 

 Matter, Ash, Nitrogen, &c., in the several descriptions of Food consumed. 



The two lots of mangold-wurzel were from different fields. 

 No. 1 having been somewhat more highly manured than No. 2 ; 

 and we find at the same time a slightly higher per-centage of 

 nitrogen in the former than in the latter. This might have been 

 due to changes in the clamp as the season advanced, the lot 

 No. 2 being sampled and used later than No. 1. The relative 

 per-centages of dry matter and of ash in the two specimens support 

 the notion, however, that there was in reality some variation in the 



Y 2 



