Eskimo Osteology 9c 



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

 30X100 



=81 



37 

 ' (5) Thickness of the mandible measured from the inner edge of the alveolus of the third 

 molar tooth to the point opposite to this externally where the anterior border of the 

 ramus joins the body — Right, 16 mm.; left, 16 mm. 



(6) Height of each ramus, measured from the bottom of the sigmoid notch and parallel to 



the borders of the ramus— Eight, 50-5 mm.; left, 51 mm. 



(7) Width of the rami, measured at right angles to the borders. The point on the anterior 



border is centre of the slight concavity just below the coronoid process. Right, 

 36 mm.; left, 38 mm. 



(8) Index of width of the rami: — 



36X100 



Right = 71-2 



50-5 



38X100 



Left 74-5 



51 



XIV H-8 



This is one of the largest and heaviest human mandibles the writer has 

 ever examined — weighing 5 ounces. All the teeth are present and are excessively 

 worn. This mandible clearly belongs to cranium XIV H-4. The grooves for 

 the lingual nerves are very pronounced and are slightly overhung by small 

 tubercles. The mental foramen is much nearer the lower than the upper border 

 of the jaw. The angle is much everted and is very obtuse, registering 128°. 

 The eversion involves also the lower parts of the rami and the posterior portions 

 of the body of the mandible, which has accordingly a striking appearance of 

 breadth when viewed from below. The alveoli of the premolar and molar teeth 

 overhang ±he inner surface to an excessive degree and in fact create such marked 

 bulgings there that the distance between the inner surfaces is greatly reduced 

 (21-5 mm. opposite the 1st molar teeth). The left molars exhibit the greatest 

 degree of wear. 



MEASUREMENTS 



(1) Intergonial width — 123-5 rom. 



(2) Distance from ridge between central incisor teeth to lower border of the symphysis — 



42 '5 mm. 



(3) Distance from inner edge of alveolus of third molar tooth to the lower border of the 



mandible^Right, 36-5 mm.; left, 36 mm. 



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



36-5X100 



Right = 85-8 



42-5 



36X100 



Left =84-7 



42-5 



(5) Thickness of mandible measured from inner edge of the third molar tooth to the point 



opposite this where the anterior border of the ramus joins the body — Right, 20 - 5 mm. ; 

 left, 21 • 5 mm. 



(6) Height of each ramus measured from the bottom of the sigmoid notch and parallel to 



the borders — Right, 51-5 mm.; left, 52 mm. 



(7) Width of each ramus, just below the coronoid process measured at right angles to its 



borders — Right and left, 40-5 mm. 



(8) Index of width of each ramus — 



40-5X100 



Right = 78-6 



51-5 



40-5X100 



Left = 77-8 



52 



