U. S. Dept. of Agriculture, Diseases of the Horse. 



Plate i. 



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 app«ir at the ages of 3, 5, 7. 9. 15, 20 and 25 

 years. C. Cement; D, Dentine; E, Enamel; /, Infundi- 

 bulum; K. Cup; P. Pulp Cavity; 5, Star. 



