422 
THE ANTIQUITY OF MAN 
the middle line of the vault in front of, and behind, the 
bregma, is caused, not by median convolutions of the 
brain, but by a remarkable vascular arrangement of which 
the longitudinal sinus forms the main part. The median 
elevation is a vascular not a convolutionary impression. 
The next brain cast we propose to examine on the 
Fn;. 
t55- — View of the upper aspect of a brain cast taken from the sl<ull 
of a native Australian. 
upper aspect is taken from the Neanderthal calvaria (fig. 
156). It has a particular interest for us in solving the 
problem of man's antiquity. It represents the brain of a 
remarkable and very ancient type of humanity which we 
suppose to have died out soon after the middle of the 
Pleistocene period. A comparison of figs. 155 and 156, 
representing the modern and ancient forms of brain, at 
