116 



MR. H. G: P. SPURRELL OX THE 



[Feb. 6, 



bitten off for them by the incisors. This they are enabled to do 

 by the angle of the jaw, which places the articulation on a 

 different level from the teeth (text-fig. 38). The closure of the 



Text-fig. 37. 



Skull of Dog. 



A. Glenoid fossa deepened hy a process of the squamosal bone. 

 ]?. Cj'lindrical condyle of lower jaw. 



Text-fiff. 38. 



Diagram of jaws. Type 2. 



mouth is effected by the approximation of the points A and B 

 (which correspond mechanicahy to A and B in text-fig. 36, C being 

 the fulcrvim in both diagrams). 



When the jaws close on an object between them, the pressure 



