THE HORSE-ANATOMY AND PHYSIOLOGY. 



631 



FIG. 12. MOUTH AT EIGHT YEARS. 



nature has them in younger horses. Horsemen, after the 

 eighth year, look at the nippers of the upper jaw. 



The upper jaw at nine years is here shown. The mark in 

 the corner teeth is comparatively deep and clearly defined ; the 



FIG. 13. MOUTH AT NINE YEARS. 



mark is still visible in the middle teeth, but it has almost en- 

 tirely disappeared from the nippers. The inner edge is worn 



