488 THE ANTIQUITY OF MAN 
which is shaded and three teeth. From these we could 
reconstruct the complete lower jaw with a fair degree of 
accuracy. In the second place, we are given all those 
parts of the skull which are shaded — replicas of the 
Piltdown fragments. The problem is to reproduce 
the parts of the face and forehead shown by stippled 
Corono/ol Proc\ 
110 JOO /' 
TASMANIAN 
Fig. 182. — Profile of the skull of a native Tasmanian. The parts stippled are 
those which have to be filled in from inference in reconstructing the Piltdown 
skull. 
lines. Our first step is to complete the mandible and 
place its condyles in their sockets, in front of the ear- 
passages (fig. 182). The second step is to complete the 
zygomatic arch : not a difficult procedure, for its commence- 
ment and direction are given us, and so is the angular 
process of the frontal bone, to which the arch is indirectly 
joined. Two other points help us : the lower border 
of the orbit is nearly on a line with the upper border of 
