THE CIKCULATIOK 



743 



greatly injure, if not destroy the animal. It is certainly the 

 owner's duty to guard his horse against unnecessary exposure, or 

 merciless driving until in a profuse per- 

 spiration, and then leaving the animal in . ^ 

 some cold, bleak place without even a 

 blanket, or but a very poor apology for 

 one, and that thrown on carelessly, while 

 the owner is perhaps enjoying himself 

 with his friends in some drinking saloon, 

 toasting his shins, and the poor horse 

 stands shivering at the door. The effect 

 of such bad treatment will not then have 

 time to develop itself, but will be seen in 

 a few hours, or at farthest on the follow- 

 ing day, by a cold or cough, running at 

 the nose, an attack of pneumonia, lam- 

 initis, or other cause of trouble. 



The three principal points in preserving 

 the health of a horse are feeding, air, and 

 exercise. In the first place, irregularity 

 of feeding, even of the best of food, will 

 produce disease ; but when with this is 

 combined the giving of tainted or musty 

 hay or grain, the difficulty is greatly ag- 

 gravated. 



Ventilation. The stable should be nei- 

 ther too hot nor too cold. The horse will 

 show the effect in a few days by coughing 

 or having slight irritation of the mucous 

 membrane of the throat. 



A horse can take cold as easily by go- FIG. 635. Sweat gland, mag- 

 ing out of the cold air into a hot stable, as nified 40 diameters, 

 he can by going from a hot stable into 6,6. Canal; c. Gland; d. 

 cold air, and vice versa. It is the sudden Opening on surface; <?. Per- 

 change of temperature which produces forafced e P idermis - 

 the change on the mucous coat of the larynx and of the throat. 

 The clothing of the horse in the stable should be neither too 

 heavy nor too light. If kept too warm, he will be more likely 

 to take cold when he goes out to exercise on a cold or chilly day. 



