MANURES. 



245 



ingredients present in one ton of solid and liquid excreta 

 respectively will clearly confirm the foregoing conclusion. 

 In order to make our comparison complete we may say 

 that in the mixed excrement (solid and liquid) of the 

 various animals we have the following percentage amounts 

 of nitrogen and phosphoric acid (when fed on more or less 

 dry food): 



In view of the fact that the valuable constituents arc 

 thus distributed, as already shown, in the solid and liquid 

 voidings, the best results can only be obtained when both 

 the solid excrement and the urine are found in the same 

 heap. 



It is clear from what has been stated that the first 

 consideration upon which the value of the manure depends 

 is the kind of animal producing it. The bulk of the mass 

 is, however, composed of the litter used, and the value of 

 this material must exercise therefore a very considerable 

 influence on the nature of the whole. The chief objects 

 of the employment of bedding are to supply comfort to 

 the animal and to act as an absorbent for the urine. As 

 most of the nitrogen and potash are found in the liquid 

 manure and can only be retained in this way it is clear 



