Skeleton of the Qorilla. 47 



Measurements of the Skeletons of the Male and Female 

 Gorilla in the Victorian National Museum, for com- 

 parison with those given by M. de Chaillu, at page 

 379 of his work on " Equatorial Africa." 



LOWER JAW. 



Length of the inferior maxillary bone, from the inferior angle 

 of the ramus to the canine tooth 



Do. to the median line, measured around to a point between the 

 middle incisors .. . 



Perpendicular height of the ramus of the jaw 



Greatest breadth of do 



Length of alveolus (in a straight line of the teeth) 



Width across the jaw from the outer margin of the last molars ... 



Do. do. at the canine or bicuspids 



UPPER JAW. 



Length of alveolus from the last molar to the canine 



Do. do. around to the median line... 



Breath across the jaw at the molars 



Do, do. at the extremities of canine 



SKULL. 



Diameter of nasal aperture 



Distance from lower margin of do. to the margin of the eye socket 

 Width of the face, measured across the eyes to the outer margins 



of the lateral orbital ridges 



Width of the face, measured at the molar protuberances 



Depth of the eye-socket to the optic foramen 



Greatest length of the face, measured in a straight line from the 



summit of the orbital ridge to the lowest point of the chin 

 Distance from the base of the nose to the top of the orbital ridge 



on the median line 



Distance from do. to the outer angle of do 



Diameter of the foramen magnum or spinal opening 



Distance from the posterior margin of that opening to the 



lateral termination of the occipital crest 



Transverse diameter of the base of the skull from the mastoid 



protuberances 



Length of the occipital crest on its summit 



Greatest height of this crest, measured perpendicularly from the 



surface of the skull 



Length of the median crest on the top of the skull 



Distance from the summit of the orbital ridge to the point of 



junction of the crests on the occiput 



(Measured from the highest points of the orbital ridge 

 and the occipital junction of the crests, a line will not 

 touch the skull.) 



M. 



F. 



inch. 



in. 



51.. 



41 



7 .. 



51 



4i.. 



31 



3i... 



21 



31... 



H 



2f .. 



21 



2i.. 



If 



3f .. 



3 



4i.. 



44 



2i.. 



2h 



21 .. 



2i 



u.. 



n 



3 .. 



2i 



6f .. 



41 



61... 



5i 



2f ... 



21 



1h ... 



6i 



3 .. 



2i 



4i.. 



3i 



u.. 



1* 



3i... 



2^ 



6 ... 



H 



11 ... 



n 



u.. 



1 



5f ... 



— 



