377 
of the hippopotamus. Compared with the mastodon of Ohio, these 
teeth are so narrow, as certainly to warrant the distinguishing of the 
animal to which they belong, as the mastodon with narrow teeth. 
A tooth from Saxony, formerly sent to Bernard de Jussieu, and 
another from Montabusard, were found to correspond in their figures 
and proportions with the preceding species, but were exactly one- 
third less. Knowing no instance of such a difference of size in any 
species of wild animals, and as this difference could not depend on 
age, since the teeth grow no more after being once formed, M. Cuvier 
had no hesitation in considering these as of a distinct species — that 
which he has named the small mastodon. 
M. de Humboldt found a tooth near to the volcano of Imbaburra, in 
the kingdom of Quito, at the height of 1200 toises. It is considerably 
decomposed, and partly coated with volcanic cinders. The same 
celebrated traveller found another of this species on the cordilier of 
Chiquitos, between Chicas and Tarija, near Santa-Crux de la Sierra, 
in 15 deg. S. L. M. Alonzo also furnished M. Cuvier with a drawing 
of another tooth from the same province of Chiquitos. These teeth 
all appear to have belonged to the same species of animal. Their 
characters appear to be that of being of a square form, and having 
the same proportions with the teeth with six points belonging to the 
mastodon of the Ohio ; and so resembling them, that they might be 
mistaken for them, were it not for the club -like figures which their 
points assume, and which cannot be mistaken for the lozenge-like 
figures observable in the teeth of the latter animal. The teeth thus 
characterized he distinguishes as the mastodon of the Cordilleras. 
To M. de Humboldt we are also indebted for another tooth, evi- 
dently of another species. This tooth, like those of the preceding 
species, is square, but is a third less in size ; bearing the same pro- 
portion to those of the preceding species as the teeth from Saxonv 
and Montabusard bear to the species with narrow teeth from 
vol. hi. 3 c 
