248 



HAKUAL OF OATTLE-FEEDIKG. 



the excrement. The original crude fibre of the fodder and 

 that of the excrement had the following composition re- 

 spectively : 



Caibon . , 



Hydrogen 



Oxy^ea... 



Excrement. 



48.1 



6.8 



45 1 



100.0 



Tlie following calculation gives ns the composition of 

 the digested portion : 





Carbon. 



Hydrogt n. 



Oxygen. 



In lOO parts of crude fibre of fodder. . . 



45.4 



6.B 



48 3 



" 48 '' ^^ '' dung.... 



3J,09 



3 26 



31 65 



Biffereuce =: 52 parts of digested crude 

 fibre r. 



33.31 



3.04 



26 65 



In 100 parts of digested crude fibre 



43.9 



5.7 



51 4 



^' *'■ cellulose 



44.4 



0.2 



49.4 







Tlxe above numbers am simply intended to illustrate the 

 method of calculation ; in other and later experiments a 

 much closer correspondence with theory has been obtained. 

 For example, the average of eleven experiments made in 

 Weende in 1863-64, on various kinds of coarse fodder, and 

 with every precaution, w^as the folloMdiig, which corresponds 

 as closely as can be expected in such experiments with the 

 composition of pure cellulose : 



