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, i.e., the first pre- 

 molar, has been lost since death, and the canine has been broken off, 

 leaving, a portion of the root in 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 all 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 suffered 

 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. Tne 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 



