ORDER PACHYDERMATA. 329 



The Mastodon with narrow teeth {Mastodon Angustidens, 

 Cuv. loc. cit.) 



The cheek-teeth of this species, narrower than 

 those of the last, have the points of these teeth, 

 when worn down, forming a disk, in the shape 

 of a trefoil, which has caused them to be con- 

 founded by some authors with the teeth of the 

 Hippopotamus. It was one third less than the 

 great Mastodon, and much lower on its legs. 

 Its remains are found throughout nearly all Eu- 

 rope, and in the greater part of South America. 

 In some places, its teeth tinted by the iron, 

 become in heating them of a fine blue, and give 

 what are called Eastern turquoise*. 

 Our second family will be that of the ordinary 

 Pachydermata, which have four, three, or two toes 

 to their feet. 



Those which have a single pair of toes have the 

 foot in some sort cleft, and approximate the Roden- 

 tia in many particulars, in the skeleton and in the 

 complication of the stomach. But two genera are 

 commonly made. 



The Hippopotamus, (Hippopotamus, L.) 



Which have on all the feet four toes, nearly equal, 

 terminated by little hoofs : six cheek-teeth in each 

 jaw on each side, the three first of which are co- 

 nical, and the three posterior are furnished with 



* Some species have been found less extended. See Cuv. 

 loc. cit. 



