By Mr. Storer Bennett. 119 
been filled up. The right wisdom tooth and left first premolar have 
probably been lost since death, for, although these teeth are missing, 
their sockets remain. The left wisdom tooth has been Jost during 
life, and its socket filled up by new bone. 
The teeth have been subject to much attrition during life, the 
enamel being entirely worn away on the masticating surfaces, 
leaving a margin of enamel enclosing a cup-shaped surface of dentine 
from the unequal rate of wear of the two substances. In the centre 
of this surface in the four incisors the calcified remains of the denti- 
nal pulp is distinetly seen. The right incisors have, indeed, been 
so worn that the enamel has almost disappeared ; the inference being 
that the food was of a very hard character, and probably mixed 
with much gritty material. A very small deposit of tartar occurs 
on the two bicuspids, and there is a slight cupping of the alveolus 
from absorption around the right one. 
No. 17. Lower jaw of great breadth, the ascending rami being 
considerably deflected outwards. The measurements are :—trans- 
versely across the two sigmoid notches, 4zin.; antero-posteriorily, 
3%in. ; the coronoid processes rise about jin. above the highest 
point of the condyle. 
The teeth show the same general characters as to wear that were 
noted in No. 16, though to a less extent, the specimen being ap- 
parently taken from a younger subject. The teeth present are the 
four incisors, left canine, bicuspids and first molar, and the second 
molar of the opposite side. The right second premolar and both 
wisdom teeth, though absent, have apparently been lost since death, 
for their sockets are present and unaltered in character. The 
posterior socket of the left second molar remains, but the anterior 
socket hus been filled up, showing that this tooth was either injured 
or diseased during life and the anterior root lost, its alveolus became 
_ absorbed, and the space for this root filled up with new bone. The 
_eorresponding tooth on the opposite side (the right second molar), 
was also lost during life, and its socket similarly removed. The 
bone in the situation of the right canine and premolars is so damaged 
that no inference can be drawn as to the condition of these teeth. 
The teeth themselves are incrusted with small masses of tartar, 
