18 



AGE OF THE DOMESTIC ANIMALS. 



I P 



Fig. 9. 



Longitudinal and antero-posteiior sections of permanent incisors. P, pinchers ; 

 I, intermediate ; C, corner ; a a a, free e.vtremities ; b b b, roots. 



the cup of enamel, has an irregular, conical form, the base 

 toward the free extremity of the tooth itself and the point im- 

 bedded in the tooth toward its root, but inclined slightly toward 

 the posterior border, especially in the inferior tooth. 



