44 



Farmyard Mamire. 



tent, by applying either the manure in a fresh state to the 

 land, or, if this is inadmissible, by keeping it no longer than 

 is absolutely necessary. 



Table showing Composition of the Whole Heap : Fresh Farmyard Manure 

 (No. I.), Exposed. Expressed in Ihs. 



It will be remarked that in the first experimental period the 

 fermentation of the dung, as might have been expected, pro- 

 ceeded most rapidly, but that, notwithstanding, very little nitrogen 

 was dissipated in the form of volatile ammonia ; and that on the 

 whole the loss which the manure sustained was inconsiderable 

 when compared with the enormous waste to which it was subject 

 in the subsequent warmer and more rainy seasons of the year. 

 Thus we find at the end of April very nearly the same amount 

 of nitrogen which is contained in the fresh ; whereas, at the end 

 of August, 27'9 per cent, of the total amount of nitrogen, or nearly 

 one-third of the nitrogen in the manure, has been wasted in one 

 way or the other. 



It is worthy of observation that, during a well-regulated fer- 

 mentation of dung, the loss in intrinsically valuable constituents 

 is inconsiderable, and that in such a preparatory process the 

 efficacy of the manure becomes greatly enhanced. For certain 

 purposes fresh dung can never take the place of well-rotten dung. 



