Piltdown. 



Kaffir. 



Fig. i.— The ascending ramus of ten chimpanzee jaws, seen from the inner side, and com- 

 pared with the same region in the Piltdown jaw, and that of a Kaffir. The extreme 

 variability of the sigmoid notch, and of the size and shape of the coronoid process, show 

 that no value whatever can be placed on inferences as to the size and shape of the 

 temporalis muscles inserted here. The Piltdown jaw more nearly resembles that of 

 the Kaffir than that of the chimpanzee. 



