TEETH NEARLY TRIANGULAR 



263 



old; but after the horse reaches his twelfth year the 

 teeth do not accurately indicate the age. 



Figs. 76 and 77 graphically illustrate the appear- 

 ance of the teeth of an old horse. The incisor teeth 

 have become nearly triangular and they show long 



FIG. 76. The lower incisor teeth of an old horse. 

 Note the shape and length of them. 



wear The tusks are large, blunt and round; the 

 notches in the corner teeth, long and deep; the front 

 ends of the teeth have been broken off, and they 

 meet at an acute angle. They may have grown out so 

 long as to prevent the double teeth from meeting; in 

 which case the horse will spit out his food after he 

 has extracted some of its juices by imperfect mastica 



