562 



HOW TO TELL THE AGE. 



have attained to nearly their full growth, and the second pair 

 will have so far displaced the temporary teeth as to appear through 



FIG. 315. At 4 to 4 > years. 



FIG. 316. At 4 years. 



the gums, while the corner ones will be di- 

 minished in breadth, worn down, and the 

 mark become small and faint. 



At four years the central nippers will be 

 fully developed; the sharp edge somewhat 

 worn off, and the mark shorter, wider, and 

 fainter. The next pair will be up, but they 

 will be small, with the mark deep, and ex- 

 tending quite across them. 



At four years and a half, or between that 

 and five, the corner nippers are shed, and 

 the permanent ones begin to appear, some- 

 thing like cut 315. The central nippers 

 are considerably worn, and the next pair FlG - 317 About 4 years. 

 are commencing to show the marks of usage. The tush has now 

 protruded, and is fully a half inch in height; externally it has a 

 rounded prominence with a groove or hollow in the inside. 



At five years the horse's mouth is almost perfect. The corner 

 nippers are quite up, with a long, deep, irregular mark on the in- 

 side, and the other nippers are showing the effects of increased 

 wear. The tush is much grown, the grooves on the inside are al- 

 most or quite disappeared, and the outer surface is regularly con- 



