Ill THE NEANDERTHAL MAN 179 



with other human skulls. In order to do this it 

 was necessary to identify, with precision, those 

 points in the skulls compared which corresponded 

 anatomically. Of these points, the glabella was 

 obvious enough ; but when I had distinguished 

 another, denned by the occipital protuberance and 

 superior semi-circular line, and had placed the 

 outline of the Neanderthal skull against that of 

 the Engis skull, in such a position that the 

 glabella and occipital protuberance of both were 

 intersected by the same straight line, the difference 

 was so vast and the flattening of the Neanderthal 

 skull so prodigious (compare Figs. 23 and 25 A), 

 that I at first imagined I must have fallen into 

 some error. And I was the more inclined to sus- 

 pect this, as, in ordinary human skulls, the 

 occipital protuberance and superior semicircular 

 curved line on the exterior of the occiput corre- 

 spond pretty closely with the " lateral sinuses " and 

 the line of attachment of the tentorium internally. 

 But on the tentorium rests, as I have said in the 

 preceding Essay, the posterior lobe of the brain ; 

 and hence, the occipital protuberance, and the 

 curved line in question, indicate, approximately, 

 the lower limits of that lobe. Was it possible for 

 a human being to have the brain thus flattened 

 and depressed ; or, on .the other hand, had the 

 muscular ridges shifted their position ? In order 

 to solve these doubts, and to decide the question 

 whether the great supraciliary projections did, or 



