CHANGES IN THE TEETH FROINI AGE. T.^,'] 



formed by the respective teeth of both jaws, when the mouth is 

 shut, becomes more and more acute with a^e. Their crowns in- 



Fig. 202. — A series of transverse sections of the lower rit;hl incisors 

 of a five-year-old horse. 



A, narrow from front to rear, n, oval, c, rounded. 1), triangular. 

 E, elongated from front to rear. (From Gotthaiix and Bai ricr.) 



crease in length, on account of their wear not keeping pace with 

 the rate at; wl)ioh the teeth are pushed out of their socliets. 



48* 



