154 DISEASES OF THE HORSE. 
impaired, giving rise to an unhealthy condition of the 
system. At times the insides of the cheeks become lace- 
rated by their sharp edges, causing them to become 
tumid and sore. These cases can only be remedied by 
the use of the horse-rasp, an instrument made for the 
purpose. 
WOLF-TEETH. 
Tlicse are two small teeth which make their appear- 
ance immediately in front of the upper molar teeth, in 
all colts at some period from the first to the fifth year. 
It is supposed by very many horsemen that they exert an 
evil influence over the eyes of the horse. My experience 
does not prove the fact, and I can not reconcile my mind 
to believe that they, natural teeth, should be placed in 
the mouths of all colts, if they were injurious to the eyes 
or any other organs of the body. If you want them re- 
moved, the best plan is to extract them with a pair of 
dentist’s forceps. In knocking them out, the raots are 
frequently left behind, and of course your object is not 
accomplished. 
CARIES OF THE TEETH. 
Caries, or decay of the teeth ef horses, is a disease of 
frequent occurrence. The silence of veterinary writers 
upon the subject has caused it to be overlooked by those 
having the care of that useful animal, and the symptoms 
in consequence have been confounded with those of other 
diseases. 
“Symptoms.— Occasionally we have a fetid breath, 
fetid discharge from one nostril, a wheezing in the head, 
‘food improperly masticated, passing away undigested, 
quidding, drowsing, hide-bound, staring coat, tucked- 
up belly, tossing the head, stopping short on the road, 
shaking ‘his head and starting on again, and at times 
