ELEPHANTS, HORSES, AND CAMELS 



177 



Fig. 102. — Dental battery of horse, to show growth and wear of tne teeth. 

 A, five years old, permanent teeth all in use. B, eight years old, crowns 

 reduced by wear and roots longer. Vestigial upper premolar, pm', jjresent. 

 C, thirty-nine years old, lower molars incline forward. Canines absent 

 (female). (From Lull, after Chubb.) 



