different Species of Asiatic Elephants. 231 
A. The incipient fang of three anterior teeth. 
BBB. The incipient roots of the posterior laminae, extending 
along the grinder. 
CC. The opposite lamellae of two contiguous teeth, begin- 
ning to join. 
DDDDD. The centres of the posterior teeth, where the la- 
mellae have not yet begun to join with each other. 
EEEE. The divisions between the teeth, which have at first 
a membrane interposed, but are afterwards filled up by the 
common bony matter, when the enamel is completed. 
Tab. IX. 
Shows part of the left side of the lower jaw of the ele*- 
phant whose grinders are represented in Tab. VII. The 
grinders are represented nearly of their natural size. Here the 
fourth succeeding grinder is farther advanced than its corre- 
sponding one in the upper jaw. Six layers of this had cut the 
gum ; whereas, only three in the former appeared through the 
gum. Part of the external plate of the interior side of the jaw, 
to which the alveolus or bony case does not adhere, is removed, 
to show the incipient alveolus of the fifth grinder, which, when 
opened, contained one denticulus. 
Between this and the anterior alveolus, is distinctly seen the 
canal of communication, which serves to connect the mem- 
branes of each grinder. Beneath the alveolus there is a very 
large canal, for the transmission of the blood-vessels and nerves; 
which, as it advances forwards, passes through the alveolus, 
where this is attached to the jaw bone. 
The termination of the alveolus in an apex, is very distinctly- 
marked in this, as well as in Tab. VII, 
Hh 2 
