EOANTHROPUS DAWSONI 
321 
situated on that part of the base of the skull which is 
formed by the temporal bone immediately in front of 
the ear. We have already seen that the temporal bone 
of the left side was recovered, revealing the characters 
of the articular cavity, which is shaped exactly as in 
modern races, and in this respect quite unlike the same 
joint in an ape's skull. In the Piltdown skull we have 
AUSTRALIAN . 
[03. — The Piltdown mandible, as seen in true profile, compared with a 
corresponding view of the mandible of an Australian native. The missing 
teeth and parts of the Piltdown mandible are indicated by stippled lines. 
thus the greater part of one half of the mandible of the 
right side ; on the left side the articular socket for the 
jaw is present ; by transposing or reversing the right 
half of the mandible to take the place of the left half, 
it will be seen that we obtain a representation of the 
skeletal outline of one half of the Piltdown head 
(see fig. 176, p. 480). 
Unfortunately, a fragment is missing from each part 
of the right half of the mandible (fig. 103). All of the 
ascending part is present ; the areas for the attachment 
of the chewing muscles are intact, save the articular 
knob itself. That is no great loss, because the shape 
of the socket in which it plied is known to us, and as 
that socket, although large, is shaped as in present-day 
