I: CI. 



Fig. 3. The Piltdown lower jaw (B) from a cast in the Williams Collection, 

 compared with the jaws of a female orang-utan (.4) and of a modern man (negro) (C). 

 External views, three-fourths of the natural size. Abbreviations: ah. rm, socket for 

 third lower molar; a. r., ascending ramus: c, canine; c. »., central incisor; con., con- 

 dyle; I. i., lateral inci.sor; mi. mi, ma, first, second, third lower molars ;pi , p2, first and 

 second premolars fequivalent to the third and fourth premolars of lower mammals) 

 192 



