69 



is among tHe few diseases that are not de- 

 pendent upon the condition of the air, but 

 is due to the pollution of the stall by the 

 excrement of the animal. 



Here let us observe, that the horse, one 

 of the cleanliest and most fastidious of 

 animals, does not seem to possess these 

 traits when stabled. This plainly shows 

 that he was never intended to be stabled. 

 Nest-building or nest-hunting-animals are 

 always tidy about their sleeping places. 

 Everybody must have observed that dogs 

 never soil their beds, and this is true, in 

 every instance, and of all such animals ; 

 even the hog, that was certainly never 

 noted for his neatness, has this instinct. 

 But the horse is entirely indifferent to, 

 and exercises no care in this matter at all. 



