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APPENDIX. 
Mastodon elephantoides: to the other lie has given the 
name of Mastodon latidens. 
In the collection before us, there must be fragments of 
at least a dozen skeletons of mastodons, many of them 
equal in size to the bones of the largest modern elephant, 
and some exceeding them ; the fragments of femur and 
tibia equal those of the largest fossil elephant, whilst in 
another specimen we have the milk-tooth of a sucking 
mastodon. In other specimens of the teeth we observe 
various stages of advancement from youth to extreme age. 
Of the ivory tusks of this animal, there are many small 
but decided fragments, of one of which a section is given 
showing the intersecting curved lines, like the engine-turn¬ 
ing on a watch, by which the ivory of the elephant’s tusk 
also is characterized. 
Of Ruminantia we have evidence to establish at least 
three species; viz. three different sized condyles of the 
femur of three full-grown animals; also teeth of at least 
two species of ox or deer or antelope; and fragments of 
the solid bony base or core of three horns of antelopes; 
and two different tibiae, with two different scapulae of full 
grown Ruminantia. 
The bones of gavial in this collection afford, like the 
hippopotamus, another example of the occurrence of fossil 
animals in a different locality from their recent analogues. 
Mr. Clift considers this species to resemble the existing 
gavials of the Ganges; but the frequent discoveries of 
fossil gavials in tertiary strata, and even in secondary 
strata, down to the lias, show, that in an earlier and dif¬ 
ferent state of our planet, this genus also has been dis¬ 
persed abundantly and widely over its surface. 
The specimens of alligators’ bones also are scarcely suf¬ 
ficient to allow Mr. Clift to pronounce decisively as to 
their identity with existing species. From the magnitude 
