AGES OF HORSES 



341 



Side view of the nippers of 

 seven-year-old. 



The lower incisor, or nipper, teeth 

 of an eight-year-old. 



Side view of the teeth 

 of an eight-year-old. 



Cross section to 

 show shape of in- 

 cisor tooth at 4, 9, 

 14, and 20 years. 



The lower incisor teeth of 

 an old horse. 



A side view of the nippers Oi 

 an old horse. 



Showing, at the upper end, the wear- 

 ing away of the cusps at 3,4,5,6,9, 

 and 20 years. 



