3^ 



the motive power of the animal, are among 

 the first of the organs to show that they 

 suffer ; and it is after violent and continued 

 exercise that, in horses kept as described, 

 we often have an acute or sudden attack 

 of muscular breakdown, commonly called 

 "chest founder." 



Now, it can be seen readily, I think, 

 that a horse in the condition above de- 

 scribed would have had a much better 

 chance to recover if, instead of being 

 closely stabled after the exercise, he had 

 been left for hours in the open air. That 

 might have given him the necessary oxy- 

 gen to dispose of his extra load of waste. 



In speaking of the automatic action of 

 the heat regulators, alluded to before, it 

 might be as well to digress a little, and 



