COMPARATIVE MEASUREMENTS. 



101 















MASTODON. ELEPHANT. 



Thickness of the same posteriorly 



Inches. 



Inches. 



From the inferior border of the horizontal branch to the top of the condyloic 



I 





and coronoid processes 



14 . 



16 



From the condyloid to the coronoid process 











. 



8J . 



6 



Width of the horizontal branch posteriorly 











. 



9 . 





Length of the condyloid articulating surface 











. 



4i • 



4i 



Transverse width of the same . 











. 



1* • 



4 



Width on the outside of the front teeth . 











. 



8| . 



4 



Width on the inside of the front teeth 











. 



4i • 



5h 



Width on the outside of the back teeth . 











. 



10 . 





Width on the inside of the back teeth 











. 



51 • 





Length of the front tooth 









4| ant. post, by 3£ 7| 



by2| 



Length of the back tooth .... 









7 ant. post, by 3f 





Dental length 









. 



11 . 





Dental width 









. 



3 . 





NASAL FOSSA. 







Depth 



19 . 



21 



From right to left 



10 



13| 



From above downwards 



4 . 



5 



Below the nasal foramina lies the intermaxillary fossa — In width superiorly . 



2 . 



3 









In wi 



dth inferiorly 



6 . 



8 



This fossa is very deep compared with that of the large skeleton, and 

 terminates superiorly in a deep blind cavity situated immediately below 

 the nasal fossse, and which therefore may be considered as the Fossa 

 Incisiva. This is" a large cavity, measuring six inches in depth, three 

 inches and a half in breadth, and five inches from above downwards. It 

 has a fissure in its posterior part, which opens into the cavity of the 

 nostrils and pharynx. In the great skeleton, this excavation, as well as 

 the whole intermaxillary fossa, is comparatively superficial ; and the same 

 is true of the Elephant. 



