118 Notes on the teeth, Bowl’s Barrow. 
upon which they have been used, the first molars naturally showing 
this to the greatest extent. Small masses of tartar may be seen on 
the teeth, especially the molars, and there is a considerable excava- 
tion of the alveolus around the right second bicuspid and left wisdom 
tooth, from absorption having taken place; the result of some 
chronic irritation ? 
No. la. Lower jaw from a young adult, containing the complete 
dentition with the exception of the right canine, lost since death. 
The teeth are well formed and but slightly worn, but some 
irritation appears to have caused a little absorption of hong in front 
of the right second molar. 
No. 15, Ascending ramus, with condyle and coronoid process, 
and part of the horizontal ramus of a right lower jaw, from a child 
about 54 to 6 years of age; containing the two temporary molars, 
the roots of which are but very slightly absorbed, and (in their 
bony crypts) the crowns of the developing canine, bicuspids, and 
first and second molars of the permanent series. These have been 
laid bare by the removal of some of the surrounding alveolus. 
No. 15a. Crown ofa right upper bicuspid which had been erupted 
for a short time, for it bears marks of some slight wear on the 
masticating surface; the root was, however, only partly developed, 
showing that the tooth had never been completed, and indicating 
the probable age of the subject from which it was taken as about 10 
to 12 or 138 years. 
Marks of wear on the anterior and posterior aspects of the tooth 
show that. it had been subject to pressure in a crowded mouth, a 
circumstance one would not have expected to find. 
No. 16. Lower maxilla, large and well-proportioned ; breadth 
across from the sigmoid notches 3gin. The coronoid processes rise fin, 
above the level of the condyles ; extreme antero-posterior measure- 
ment, 3gin. Genial tubercules strongly marked. The ridges for 
muscular attachment are not especially prominent. 
The teeth present are the four incisors, right canine, first bicuspid 
and molar, the left second bicuspid and first and second molars. 
The right second bicuspid, second molar, and left canine have 
evidently been lost during life, since their alveolar sockets have 
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