408 



ORANG OUTANG OF SUMATRA. 



Length of tlie ramus from the head of the jaw to Its base, . .'. 



Breadth of the ramus or ascending portion of the jaw at a level with the 



teeth :."';.• 



"Depth of the jaw at the symphysis menti, .... . <, . . ..:..". 



Inch. 



4 



9i 



MEASUREMENT OF THE TEETH. 

 Number of Teeth 32, namely 2 Canine, 10 Griaders, and 4 Incisive Teeth in each jaw. 



Canine Teeth. 



Whole length of lower canine teeth, *..... .... 2.7 



Greatest length of fang, .... .... . . . 2 



Smallest ditto, ..... .... 1.6 



Greatest length of the enamel or exposed part of the teeth, ...... 1.1 



Part exceeding the other teeth in length, 4 



Lateral breadth measured on a level with the jaw, .... 6 



Breadth from before inwards, , .... .. . . 7 



Incisive Teeth. 



Whole length of the lateral, 

 Of enamel exposed, .... 

 Breadth of cutting surface, 

 Ditto of central teeth, 



1.5 



.7 

 .4 

 .4 



The front teeth of the upper jaw greatly resemble those of the lower, with 

 the exception of the middle incisive teeth, which are twice the width of the 

 lateral ones. 



