122 Notes on the teeth, Bowl’s Barrow. 
Nor. 23. Portion of right half of adult lower jaw, containing 
the second premolar and three true molar teeth, with the socket of 
the first premolar and canine; the former tooth, 7.¢., the first pre- 
molar, has been lost since death, and the canine has been broken off, 
leaving a portion of the root iz situ. 
A portion of the roots of the first molar and second bicuspid are 
bare of bone and eroded from post mortem injury. A slight amount 
of tartar incrusts the teeth. 
No. 24. Portion of body of a well-developed mandible, in which 
the chin is very prominent. The teeth it contains are the incisors, 
canines and bicuspids on both sides, and the first molar on the left 
side. The teeth are but slightly worn, and are much incrusted with 
tartar; from the quantity of it present, and the slight amount of 
attrition to which the teeth have been subjected, it seems probable 
that the food of this subject was of a softer and less gritty character 
than that of the other specimens examined. 
There is a considerable thickening, cupping, and eversion, of the 
edge of the outer alveolar plate of the right central, lateral, and 
canine; and a similar cupping from absorption of the inner alveolar 
plate round these teeth and of the two right bicuspids; the edge of 
the alveolus round al] the incisors and canines being more or less 
diseased, and all these teeth stand at a higher level than the bicuspids 
and molars do. From this it appears likely that the subject suflered 
during life from a thick incrustation of tartar round the incisors and 
canines, alveola-dental periostitis having caused the teeth to rise in 
their sockets and be painful when bitten upon; a condition by no 
means uncommon in the present day. 
No. 25. Portion of right and left upper maxilla, showing ex- 
tensive disintegration. The parts present are the right maxillary 
and a portion of the palate bones, with a part of the floor of the 
orbit. The antrum of Highmore is large, and divided by a vertical 
partition running antoro-posteriorily into two almost distinct 
cavities, the outer one being much the larger of the two. On the 
left side is part of the maxilla, the palate bone being broken away, 
but the remains of the antrum displays a similar subdivision into 
two chambers as does that of the opposite side. The teeth present 
