APPENDIX. 107 



for all that is not demanded for the mere supply of the 

 waste of its body in the maintenance of life is con- 

 verted into organized tissues ; the excess of blood made 

 is transformed into cellular and muscular substance. 



43. The stall-fed animal eats, and reposes merely for 

 the purpose of digestion. It consumes, in the form of 

 nitrogenized substances, much more food than is requisite 

 to supply the waste effected by the vital processes ; and 

 at the same time it eats much more non-nitrogenized food 

 than is required for respiration and the production of 

 animal heat. The excess of Carbon thus taken up by 

 the animal is not converted into muscle (lean meat), 

 but is transformed into fat, a substance which, in the 

 natural state, is only found in small amount in the brain 

 and nerves. 



44. The flesh of wild animals is almost wholly devoid 

 of fat, while the flesh of stall-fed animals is covered with 

 a thick layer of that substance. But, if the stall-fed 

 animal is permitted to go at large, or is put to hard 

 labor, the excess of fat soon disappears. 



45. A horse can be kept in a perfectly good condition 

 if he can obtain as food fifteen pounds of hay and four 

 and a half pounds of oats, daily. 



46. A hog fed with highly nitrogenized food makes 

 flesh (lean meat or muscle) , but if fed upon diet con- 

 taining much starch (Carbon) it acquires little flesh, 

 with a great excess of fat. It is because apples contain 



