TUSHES
.—The teeth so called in a horse, are the two above, and the two below, standing single behind the corner teeth of both the upper and the under jaw: these seldom make their appearance till the horse is four years old off, and attain their full growth at six. If these are examined when the horse is of that age, the inside will be found flat, with two grooves or channels running down to the gum; but when the horse is a few years older, those two are reduced to one; and soon after he has reached his twelfth year, even that is obliterated, leaving no other remaining certainty respecting age by the mouth. External appearances are, however, so numerous, by which a tolerable opinion may be formed, that good judges are seldom at a loss to decide with some degree of precision.