180 



FELID/fi. 



convex margin becoming thicker there, like the back of a 

 knife, to give strength ; and the power of the tooth being 

 farther increased by the expansion of its sides. Thus, 

 as in the Megalosaurus, each movement of the jaw with 



Fig. 69. 



Canine of Machairodus latidens, nat. size. Kent's Hole. 



a tooth thus formed combined the power of the knife 

 and saw ; whilst the apex, in making the first incision, 

 acted like the two-edged point of a sabre. The back- 



