RELATION OF FOOD TO MANURE. 



Ill 



taining 7'8 lb. of albuminoids. It follows from these data 

 that for 100 lb. of albuminoids consumed, 14*7 are stored 

 up as carcase, 21 appear in the solid excrement, and 64*3 

 as urea, &c., in the urine. In the same way, by deduct- 

 ing the ash constituents stored up from those present in 

 the food, we can arrive at the quantity of ash constituents 

 voided in the manure. Calculating in this manner the 

 relation of food to manure in the case of the fattening ox, 

 sheep, and pig receiving the diets assumed in previous 

 calculations (p. 101), we arrive at the following con- 

 clusions : — 



NITROGEN STORED UP AND VOIDED FOR 100 CONSUMED. 



ASH CONSTITUENTS STORED UP AND VOIDED FOR 

 100 CONSUMED. 



Oxen 

 Sheep 

 Pigs 



Stored up as 

 increase. 



2-3 



3-8 

 4-5 



Voided in total 

 excrements. 



97-7 

 96-2 

 95-5 



The proportion of the nitrogen and ash constituents of 



* The quantities of nitrogeu given in this cokimn are a little below the 

 truth, as besides the undigested albuminoids some nitrogenous biliary matter 

 is present in the solid excrement. With oxen and sheep the amount of biliary- 

 matter in the excrement is very small ; with pigs it is more considerable. In 

 the case of the pig the nitrogen in the solid excrement should probably stand 

 as 25 '0, and that in the liquid as 59*3. 



