IN THE LOWEE ANIMALS, ETC. 



327 



being situated in the beaver immediately anterior 

 to the first molar (Fig. 51, A), while the lower 



Fig. 51, A. — Section of Beaver's Skull. Upper jaw. 



E. Enamel indicated by dotted line. D. Dentine. 



P. Formative pulp at the implanted extremity of the incisor, situated in front of 

 first molar. 



incisor describes the arc of a wider circle, the 

 implanted extremity extending beyond the last 

 molar ; below the condyloid process. (Fig. 51, B.) 



Fig. 51, B, — Section of Beaver's Skull. Lower jaw. 



E. Enamel indicated by dotted line. D. Dentine. 



P. Formative pulp at the implanted extremity of the incisor situated behind the last 

 molar. 



So hard is the enamel of the beaver, and so 

 good a cutting instrument is the incisor tooth, 

 that when fixed in a wooden handle, it was, 

 according to Sir John Richardson, used by the 



