33 



If the horse is in good condition, the 

 blood well oxydized, and the cells of the 

 various tissues thoroughly healthy, as in 

 a horse who has been liberally supplied 

 with fresh air, the blood rapidly takes up 

 the oxygen, the extra waste caused by the 

 exercise is burned up, and exhaled as car- 

 bonic acid gas, and becomes harmless. 



Of course, the extra heat generated by 

 the increasing supply of waste, and its 

 rapid combustion in the lungs, warms up 

 the body, and, as the organism would be 

 seriously damaged if the temperature rose 

 above 99 degrees, the automatic mechan- 

 ism that regulates the temperature causes 

 an increased action of the sweat glands of 

 the skin, and the coat of the animal be- 

 comes wet with perspiration, or, merely 



