440 



NAVIX OX THE HORSE. 



evidently smaller than when first matured, and having the 

 mark almost worn out. As with the others, a change next 

 takes x:>lace in the corner nippers. At four and a half, or be- 

 tween that and five, they begin to 

 strip, and are soon replaced by their 

 successors. 



At this time, also, the animal starts 

 ^y -^ \ ^'W ^^^ tushes. They come up between 



the nippers and grinders, rather near- 

 er the former than the latter, but the 

 distance increases as the jaw grows, 

 which continues until seven. 



At five, the mouth being full, the 

 nippers all set, the four tushes from three to five months old, 

 the colt becomes a horse, and, at the same age, the filly, a 

 mare, her mouth passing through the same changes, except as 

 regards the tushes, which, in many cases, do not appear at all, 

 but in others appear only as small and rudimentary. 



The cut shows tlie five-year-old 

 mouth. The tush is round and sharp, 

 and, at first, having a groove on each 

 side, and hollow within, like a hog's 

 tush. The corner nippers are full 

 grown, the mark long, deep, and nar- 

 row, and irregular on the inside. 

 The tush is still sharp, but the 

 groove on the outside worn out, or 

 nearly so, and the outside convex, or 

 round. The sixth pair of molars are up at this time, and the 

 third is wanting. These appearances must be carefully ob- 

 served to prevent deception, by the attempt to put ofi* a four 

 for a five-year old. The only teeth which remain permanent, 

 or are never shed, are the last three j^airs of grinders and the 

 tushes. All the others, as we have seen, are cast, and replacod 

 at most remarkably regular intervals of time, and in such a 



