U.S. Dept. of Agriculture, Diseases of the Horse. PLATE |. 
AGE OF HORSES AS INDICATED BY TEETH. 
Longitudinal section of left central lower incisor 
and cross sections of same tooth showing table surfaces 
as they appear at the ages of 3, 5, 7, 9, 15, 20 and 25 
years. C, Cement; D, Dentine; E, Enamel; 7, Infundi- 
bulum; K, Cup; P, Pulp Cavity; S, Star. 
