172 



Breadth across the anterior part of symphysis 

 Depth of ascending ramus from the upper part of") 



the condyle J 



Depth of ramus at the anterior part of the base of ") 



coronoid process ...... J 



Depth of ramus at the first socket .... 



the symphysis following the outer curve 

 Antero-posterior extent of base of coronoid process . 

 From the back part of the condyle to the end of the 1 



angular process ...... J 



From the end of the angular process to the last socket 

 From the first socket to the anterior margin of the jaw 

 Extent of the alveolar series ..... 



Breadth of the condyle ...... 



From the largest anterior outlet of the dental canal ") 



to the anterior margin of the jaw . . J 



Vertical diameter of the entrance of the dental canal . 



M. robustus. 



M.Darwinii. 



Mega- 

 tlierium. 



ft. in. 

 5 



lines. 

 4 



ft. 

 



in. 

 3 



lines. 

 8 



ft. in. lines. 

 5 8 



5 



7 









1 



3 



7 







2 



9 



9 



3 













5 



4 



3 







2 



6 





3 



8 







4 



4 



7 6 



3 



2 









5 10 



6 



6 











3 



6 







6 







8 9 



5 



4 







4 



6 





2 



6 











3 



2 







4 













6 











5 





Anterior Extremity. 



Length of the anterior extremity .... 



Scajmla. 

 The greatest extent of the right scapula from the in- "1 



ferior angle to the end of the coracoid arch . J 

 Greatest breadth from the inferior border of the gle- ") 



noid cavity to the posterior superior angle . J 



Greatest height of spine ...... 



Longest diameter of glenoid cavity . 



Shortest diameter of ditto ...... 



Length of the base . . . . 



Mylodon. 



Mega- 

 therium *. 



Megalonyx 



ft. in. lines 

 4 6 



ft. in. lines. 

 10 



ft. in. lines 



1 7 3 



2 6 6 





1 1 2 



1 5 6 





3 5 



5 





5 



6 6 





3 



4 6 





1 2 



2 3 6 





* The dimensions of the scapula, clavicle, radius, and bones of the hand are taken from the actual 

 specimens in the Museum of the Royal College of Surgeons. 



