44 



shews that the enamel does not, in the slight- 

 est degree, pervade the tooth, as It does in the 

 Elephant. The teeth of the Asiatic Elephant 

 are composed of Yinmtxous perpe72dicular plates 

 of enamel, so connected by pairs at the sides, 

 as to form to appearance on the surface, long 

 flattened ovals -, and, in fact, they are united 

 at bottom as well as originally at the surface, 

 which is quickly worn off, and which then dis- 

 closes an ivory of close texture, and different 

 formation from that which separates from each 

 other these flattened ovals of enamel. The teeth 

 of the African differ from those of the Asiatic 

 Elephant in having fewer portions of thicker 

 enamel, which do not run parallel with each 

 other in plates, but are so disposed that, on 

 the surface of the tooth, or a horizontal sec- 

 tion of it, the ivory enclosed within the ena- 

 mel resembles a cross, consequently the teeth 

 are better adapted to coarser vegetables and 

 greater rotatory motion *. 



I have seen some teeth of the Mammoth 

 with the summits of their enamel-capped pro- 



* See the plate, figure III, and IV. 



