ON THE STABLE. 141 



Beasts of chacc appear, either from in- 

 stinct, or some other cause, to be sensible of this 

 difference, for they ahiiost invariably run with 

 the wind, whereby they, in a great measure, 

 carry their scent with them ; they are also, by 

 this means, better enabled to hear the cry of 

 their pursuers. The alternate action of the pro- 

 duction of heat by the combination of air with 

 the blood in the lungs and arteries, and the 

 throwing it out from the body by perspiration, 

 is carried on without intermission during health. 



From what has been said, it appears that 

 the heat thus produced by the animal is ex- 

 pended upon heating the air which comes in 

 contact with him ; whence arises that species of 

 warmth which is generally met with in a close 

 or confined stable, and upon this ground very 

 enoneous conclusions have been formed ; for it 

 is generally supposed that this artificial tempera- 

 ture increases the warmth of the animal, and 

 measures are consequently adopted to support 



it. 



