App. I. MALE OF THE FAN TRIBE. 447 



deeper, more uniformly convex, and have not the 

 lower border turned outward. The forward direction 

 of the upper incisive alveoli is the same in degree as 

 in No. 24, but they are rather longer. The bony 

 palate is more contracted anteriorly. The external 

 pterygoid plates are broader, shorter, and more everted 

 than in No, 24. The cranial walls are thicker and 

 denser ; they are 4i lines thick in ihe parietal and 

 frontal bones, along a section taken half an inch from 

 the medial line of the calvarium ; the parietal is a 

 little thinner at the boss, and thins as it descends ; 

 but near the squamosal suture it retains a thickness 

 of three lines. The diploe is scanty and feebly 

 marked, and owing to the general density of the 

 cranial walls the weight of the skull is considerable, 

 being, without the lower jaw, 2 lbs. 2f oz. avoird. 



The molars, as in No. 24, are intermediate in size 

 between those of Australians and the generality of 

 those of Europeans. 



The third skull (No. 96, figs. 7, 8, and 9) is of an 

 aged female, also of the Fan tribe, retaining only 

 the two canines and one molar of the left side of the 

 upper jaw, and with an edentulous mandible of a 

 peculiar form, combining, with the usual character- 

 istics of that condition in aged individuals, an upward 

 production of the fore-part, through the " stimulus 

 of necessity " of a biting proximity of the lower to 

 the upper incisive alveoli between the retained upper 

 canines, as shown in fig. 7. The alveoli of the lost 

 molars are absorbed in both jaws, but those of the 

 lost incisors, tliough obliterated, liave been main- 

 tained in much of their pristine length, and have 



