224 
iELIANS’ WART-HOG. 
to be placed into the same class as the back teeth 
of the Elephant. It consists of three rows, placed 
alongside of each other, at well connected tubes, 
each about two inches long. At the outer side, 
we count nine such tubes, eight at the inner, and 
seven at the middle row, (this was the case in an 
old individual, in some animals we found several 
middle tubes double,) which tubes can be distin- 
guished from each other at the enamel surface 
by their oblong globules. Each of these tubes, 
even the foremost or most recently formed, is 
hollow in the lower two-third portions, or closed 
up towards the enamel surface, and contains 
the bulb, ( bulbe , Fred. Cuvier,) destined for the 
continual nourishment of the individual tubes, 
which bulb was distinctly noticed by us, after 
soaking the skulls. All the tubes of this tooth 
are free towards the root-end, and contained in 
one common large alveola, which is hollow at the 
bottom, only the anterior tube excepted, which at 
the lower end, and in an anterior direction, is 
separate from the rest of the tooth ; whereby a gap 
is formed between it and the second tube, which 
gap is filled with a bony substance, a circumstance 
peculiarly obvious in that of the lower jaw. This 
fact would suggest a doubt, whether the posterior 
back tooth would push forward towards the ante- 
rior side ; although we did observe in younger 
individuals the after growth of the posterior tubes 
