EOANTHROPUS DAWSONI 
317 
the roof and side of a great part of the brain chamber, 
and is therefore of the utmost importance. We want 
especially to know about the brain, for that is the master 
organ of the human body. It will be noted that even on 
the left side certain fragments of the parietal bone are 
missing along its upper margin, hinder border, and at its 
lower angle behind. The dimensions of these missing 
parts can be estimated with accuracy. The parietal bone 
of the opposite or right side is also represented. Only 
Fig. 100.— Fragments of the Piltdown skull placed in position and 
represented in profile. 
about two-thirds of that bone is present, and, unfortunately, 
the part which is missing is the upper area which reaches 
up to the middle line on the roof of the skull, where it 
should come into contact with the opposite or left parietal 
bone. The actual part of the right parietal bone re- 
covered is indicated in fig. loi, where it has been super- 
imposed over the corresponding area of the left side. 
Coming now to the hinder or occipital end of the skull, 
we find the bone of that region represented by a 
considerable fragment. The actual part of the occipital 
