360 
This specimen is particularly interesting, from the circumstance of 
its showing that this particular modification of the arrangement of the 
enamel takes place in the part of the tooth nearest to the root, as the 
other specimens, that from Wellsbourn, and that whose surface is 
represented Plate XX. Fig. 5, show that it exists in the crown of the 
tooth. From this peculiarity of structure being found to exist in three 
different specimens, I conceive that it cannot be regarded as an acci- 
dental difference ; and from the considerable difference which exists 
between this arrangement of the enamel and that which occurs in the 
teeth of the living species, and of the common fossil species, I trust it 
will be admitted as being likely to be one of the characteristics of a 
species which has not yet been remarked. 
M. Cuvier, anxious to discover the degree of accordance of the fossil 
elephant’s skeleton with that of the living species, compared the fossil 
skull found in Siberia by Messerschmidt, a figure of which is given by 
Breyn, in the fortieth volume of the Philosophical Transactions, with 
those of the African and Asiatic elephants. The result of his com- 
parison was, that in the fossil species the alveoli of the tusks are much 
longer ; the zygomatic arch is of a different figure ; the post- orbital 
apophysis of the frontal bone is longer, more pointed, and more 
crooked ; and the tubercle of the os lachrymalis is considerably larger, 
and more projecting. To these peculiarities of the fossil skull, M. 
Cuvier thinks, may be added the parallelism of the molares. 
The lower jaws of the fossil species of elephants accord with the 
peculiarity of form observable in the skull. From the teeth in this, 
as well as in the upper jaw, being placed nearly parallel with each 
other, the vacuity between the branches of the jaw, at its fore part, is 
wider, in proportion to its length, than is the case in either the Asiatic 
or African jaws. In the existing species of elephants the lower jaw 
terminates in rather a pointed apophysis, room to admit of the motion 
of which is yielded by the separation of the tusks. But in the fossil 
skull the alveoli of the tusks descend much lower, so that they would 
