APPENDIX. 
147 
Judging from the number and proportion of bones in 
the collection made by Mr. Crawfurd, the most abundant 
fossil animal in the valley of the Irawadi is the mastodon, 
then the crocodile and tortoise, and lastly the rhinoceros 
and deer. Of the hippopotamus, parts only of two jaws 
have been yet identified; and of the tapir and hog, one 
fragment only of a lower jaw. It is not however possible 
to deduce any certain conclusions as to the relative abun¬ 
dance of these animals, from the proportion of bones in any 
single collection. 
The following may be given as a rude approximation 
to the numerical proportion of bones and fragments of 
bones we have now before us. 
No. of bones. 
Mastodon . 150 
Rhinoceros .. 10 
Hippopotamus . 2 
Tapir .. 1 
Hog . 1 
Ox, Deer, and Antelope . 20 
Gavial and Alligator .. 50 
Emys . 20 
Trionyx . 10 
At the head of this list stand the remains of the genus 
Mastodon, not only because they so much exceed in num¬ 
bers the aggregate of all the rest, but because they estab¬ 
lish the fact, that at least two species of these gigantic 
animals were among the antediluvian inhabitants of the 
southern parts of Asia, and because they add, to the six 
species of this extinct genus already ascertained by Cuvier, 
two new and strongly characterized species, one of which, 
from its approximation to the elephant in the structure of 
the teeth, Mr. Clift proposes to designate by the name of 
k 2 
