Eskimo Osteology c21 



MEASUREMENTS 



(1) Intergonial width — 117 mm. 



(2) Vertical distance from the rid^e between the alveoli of the central incisor teeth to the 



lovrer border of the symphysis — 34 ■ 5 mm. 



(3) Vertical distance from the innder edge of the alveolus of the third molar tooth to the 



lower border of the mandible — Right, 26 mm.; left, 30 mm. 



(4) Index of height of the mandible — 



26X100 



Right = 75-3 



34-5 



30X100 



Left =86-8 



34-5 



(5) Thickness of mandible, measured from the inner border of the alveolus of the third 



molar tooth to the point where the anterior border of the ramus joins the body — 

 Right side, 15-6 mm.; left side, 19 mm. 



(6) Height of each ramus, measured from the bottom of the sigmoid notch — Right, 43 mm.; 



left, 46 mm. 



(7) Width of the rami— Right, 40 mm. ; left, 42 mm. 



(8) Index of width of each ramus — 



40X100 



Right - = 93-02 



43 

 42X100 



Left 91-3 



46 



XIV F-12 



The mandible of an adolescent between seventeen and twenty-four years 

 of age. The third molar of the left side had just been in the act of erupting. 

 The first and second right molars and the first and second left molars are the 

 only other teeth remaining, and already exhibit a marked degree of wear of the 

 labial cusps. The alveolus for the third right molar is very deep and is very 

 slightly divided into two, so that this tooth was evidently in the same stage of 

 eruption as the left. The other teeth had all been in existence and their alveoli 

 are remarkably deep. The angle is very obtuse and measures 131°. 



MEASUREMENTS 



(1) Intergonial width — 110 mm. 



(2) Vertical distance from the ridge between the central incisor teeth to the lower border of 



the symphysis — 32 • 5 mm. 



(3) Vertical distance from the inner border of the alveolus of the third molar tooth to the 



lower border of the mandible — Right, 28 mm.; left, 29 mm. 



(4) Index of height of the molar region of the mandible — 



28X100 



Right =86-1 



32-5 



29X100 



Left = 89-2 



32-5 



(5) Thickness of mandible, measured from the inner border of the alveolus of the third molar 



tooth to the point where the anterior border of the ramus joins the body — Right 

 side, 17-5 mm.; leftside, 17-75 mm. 



(6) Height of each ramus, measured from the bottom of the sigmoid notch — Right, 42-5 



mm.; left, 46-5 mm. 



(7) Width of the rami, measured at right angles to their borders — Right, 35-5 mm.: left, 



36-5 mm. 



(8) Index of width of each ramus — 



35-5X100 



Right =83-5 



42-5 



36-5X100 



Left — 78-4 



46-5 



