120 Notes on the teeth, Bowl’s Barrow. 
in greater quantity than in specimen No. 16, but not by any means 
in such amount as is frequently seen in the mouths of people in the 
present day; this may be in some measure accounted for by the 
gritty character of the food used by those early people, which would 
naturally tend to wear away any deposits of salivary concretions. 
The alveolar edge surrounding the left molar is thickened and 
cupped from absorption, probably the result of a condition known 
as “pyorrhea alveolaris”; and on the buccal surface of the tooth 
near its neck there is a small carious cavity. 
Situated at the back of the right second molar near its neck is 
a shallow groove, the result of erosion during life. 
No. 18. Portion of right half of massive well-formed lower jaw, 
on which the ridges for the attachment of muscles are strongly 
developed ; and containing the canine premolars and first and second 
true molar teeth. 
The teeth are well formed, and, although worn and polished from 
attrition, are less so than the previous specimens. The sockets of 
the lateral incisor and wisdom tooth are empty, but the teeth have 
been lost suhsequently to death. The central incisor was, however, 
lost during life, for its socket is partly filled up by new bone. The 
teeth have a small quantity of tartar on them, but less than specimen 
No. 17 has. 
The outer alveolar plate is cupped from absorption in the situation 
of the second molar, probably, as in the last specimen, from 
“pyorrhea alveolaris,’ but the disease appears to have made more 
progress. No sign of caries is present upon any of the teeth. 
No. 18a. Portion of left half of lower maxilla, of a similar 
character to the last specimen, of which it appears originally to have 
formed a part. 
The only teeth present are the second bicuspid and first molar, 
both slightly incrusted with tartar, but otherwise presenting nothing 
worthy of remark. The sockets of the second molar, and wisdom 
tooth indicate that their teeth were present at the time of death. 
No. 19. Portion of right half of a very massive lower jaw, con- 
taining the two bicuspids and first and second molars and the socket 
of the wisdom tooth with a portion of its posterior root, the tootb 
