THE TEETH. 



361 



My ic substance. Trie next nipper all round has grown nearly 

 to its 'ull size, but not quite, and its edges are still sharp, with tho 

 mark deep and very plain. The corner milk nippers still remain, 

 unless they have been knocked out for purposes of fraud, which 

 is sometimes done to hasten the growth of the j ermanent teeth, 

 and give the horse the appearance of being four or five months 

 oldei than he is. 



Between four and a half and five years, the corner 

 nippers are shed, and the tush protrudes through the gum. These 

 changes are shown at fig. 4. 



At five years, the mouth is complete in the number of its 

 t-eeih; and from this date it becomes necessary to study their 

 aspect in both jaws. Fig. 5 shows the upper teeth at this age, by 

 oomparing which with fig. 4 the slight growth in the half-year 



FW. 5.— UPPER NIPPERS ANT TUSHES AT FIVE TEARS OLD. 



1 1 Oontral nippers, with the mark 3. 3. Corner nippers, with the edges verj 



still unobliterated. slightly worn. 



2 2. Next nippers, with the mark still 4. 4. Tushes, well developed, and still shew. 



plainer. ing the groove op the outside plain) j. 



may be traced. In the lower teeth of the same mouth, the edges 

 of the central cavities are much more worn away, the central 

 nipper having only a small black speek in the middle of a smooth 

 surface, while tho next is much worn, and the corner teeth, though 

 showing the mark very plainly, bear evidence of having been used 

 The tush is much grown, with its outer surface regularly convex, 

 and its inner concave, the edges being sharp and well defined, Xha 



