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third molars, and the socket of the first. The third molar is the most en- 

 tire ; its grinding surface is produced into two high subcompressed trans- 

 verse ridges, placed one before the other ; there is also a ridge along 

 both the anterior and the posterior parts of the base of tbe crown. The 

 exposed commencement of the fangs is invested with a thick coating of 

 cement ; a portion of this substance also remains in the interspace 

 between the posterior eminence and its basal ridge ; the enamel is thick 

 and presents a rugose or finely reticulate and punctate exterior, the 

 perforations being seen at the fractured margins to lead to smooth pits, 

 extending a little way into the enamel. The antero-posterior diameter of 

 this tooth is two inches, the transverse diameter is one inch three lines ; 

 the extent of the three sockets of the molars is four inches five lines ; 

 they progressively diminish in size from the third to the first. The 

 second molar is much narrower than the third, but its crown seems also 

 to have supported two principal transverse eminences, and an anterior 

 and posterior basal ridge : its antero-posterior extent is one inch and a 

 half; its transverse diameter at the posterior division, where it is thickest, 

 is nine lines : the coronal ridges are broken off. The first molar is lost ; 

 but its socket shows that it was implanted, like the other molars, by two 

 fangs. The anterior part of the symphysis and crown of the large in- 

 cisor are broken off; from the first molar to the fractured end mea- 

 sures six inches three lines ; this part of the margin of the jaw manifests 

 no trace of tooth or socket. The incisor tooth extends forwards and 

 slightly upwards ; it is subcompressed, measuring one inch and a half in 

 the vertical diameter and nearly one inch in transverse diameter ; it has 

 a partial coating of enamel, which extends over the inferior and the lower 

 half of the exterior surface of the tusk ; the enamel has the same rugose 

 punctate outer surface as that of the molar teeth. The large size of the 

 dental canal exposed by the posterior fracture of the ramus indicates the 

 ample supply of vessels and nerves which minister to the growth and 

 nutrition of the incisive tusk ; the great depth of the symphysis of the 

 jaw gives the required strength for the operations of the tusk, and space 

 for its support and for the lodgement of its large persistent matrix. The 

 vertical diameter of the symphysis anterior to the molar series is four 



