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living species of elephants, but also from every fossil tooth of which 1 

 have heard. Its peculiarities of character are, the great thickness of the 

 plates, the smoothness of the sides of the line of enamel, and the ap- 

 pearance of the digitated part of the plates, even in the anterior part of 

 the tooth. 



The length of this tooth, which is formed of thirteen plates, is eight 

 inches ; and the length of its triturating surface, on which are the termi- 

 nations of nine plates, is six inches. The width of these plates may there- 

 fore be taken at nearly double that of the plates of fossil teeth in general ; 

 since, in a fossil tooth from Wellsbourn, in Warwickshire, twenty plates 

 exist in the length of six inches and a half; and, in a tooth from Essex, 

 Plate XX, Fig. 8, in a length of eight inches and a hal are contained 

 twenty-four plates. 



The uncommon smoothness of the sides of the enamel in this fossil 

 teeth, not only appears on its horizontal section, but, the cortical crust 

 having been removed, by decomposition, from between the plates, the 

 great degree of smoothness of their sides is rendered evident. 



On almost every triturating surface of the fossil teeth of elephants, ex- 

 cept, indeed, when a tooth is first brought into action, full three fourths 

 of that surface, anteriorly, will be found to be supplied with the plates 

 rubbed down into single bands, passing quite across the tooth ; whilst the 

 remaining one fourth of the surface is filled with detached rings or points, 

 formed by the digitated processes of the plates. But in this tooth the 

 reverse of this is to be seen. Only two entire bands exist, possessing, 

 on the anterior part, about one fourth of the surface : the remaining 

 three fourths being occupied by the terminations of the digitated pro- 

 cesses. 



Taking all these circumstances into consideration, I think there is 

 every reason for considering this tooth rather as belonging to a different 

 species from any which has been hitherto noticed, than to regard it as 

 an anomalous formation of a tooth belonging to the known fossil species. 

 This opinion is founded on four important characters; the great width 



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