28 



Dentition as indicative of the Age 



will appear further on, consists chiefly in observing the length 

 of the groove which appears in the upper corner incisor at ten 

 years, and gradually extends to the lower edge of the tooth. 

 In Fio". 22, page 31, the appearance of this groove at ten years 

 old is shown. 



At twelve years old the teeth are longer from the receding of 

 the gums, and are also narrower in consequence of having been 

 worn towards the fang, which decreases in width from the neck 

 of the tooth to its termination. The tusks are blunted, especially 



Fig. 19. — Incisors of Horse (" Lothario ") at tivelve. 



those of the upper jaw, and a quantity of tartar often surrounds 

 those in the lower jaw. The incisors at this age project almost 

 in a straight line from the jaws, and in some mouths a line 

 drawn transversely across the tables of the teeth will cut the 

 centres of all of them, excepting those of the corner teeth. 



The above drawing (Fig. 19) represents the teeth of the 

 thoroughbred horse " Lothario," foaled in 1840, as they appeared 

 in 1852. 



On comparing the tables of the teeth with those of the mare 



I r\ 



