of the Animals of the Farm. 407 
Fig. 14. — Incisors of Horse at Jive years. 
Indications of Age of the Horse afforded by the Teeth 
after the completion of permanent dentition. 
From the completion of permanent dentition, the evidence of 
age is to be obtained by the inspection of the tables of the 
incisor teeth, in regard to their form, the extent and depth of 
the central cavity, and the shape of the central enamel. 
At six years old the horse's age is judged chiefly by the 
amount of wear which the corner teeth have sustained, although 
there are other marks which are worthy of notice. 
The corner teeth have lost their shell-like character, and a 
