VE TERINAR T DENTAL S URGER T. 



23 



The incisor milk teeth are whiter than the per- 

 manent ones, and have distinct necks (Fig. 6, 5.)? 

 the neck of the permanent tooth being imaginary. 



FIG. 6. 



INCISOR TEETH OF THE HORSE. DETAILS OF STRUCTURE. 

 i, A tooth in which is indicated the general shape of a 

 permanent incisor, and the particular forms successively as- 

 sumed by the dental table in consequence of friction, and 

 the continued pushing outwards of these teeth. 2, A virgin 

 tooth anterior and posterior faces. 3, Longitudinal section 

 of a virgin tooth intended to show the internal conforma- 

 tion and structure. 4, Transverse section for the same 

 purpose, a, Encircling enamel; b, Central enamel; c, Den- 

 tal star ;</, Dentine. 5, Deciduous teeth. C/iauveau. 



