EOANTHROPUS DAWSONI 
331 
Eoanthropus Is much more massive than that of the 
modern man. As regards details of head conformation 
they have much in common. In both a prominent 
mastoid process lies behind the ear-hole ; it is shaped 
in the Piltdown man as in modern human races. As the 
mastoid is one of the structures by means of which the 
Fig. 112. — Profile drawing of the skull of a modern Englishman 
with a cranial capacity of 1425 c.c. (half natural size). 
muscles of the neck move and balance the head, we must 
infer, from the fact that this process is present in its 
modern shape in Eoanthropus, that the head in that 
ancient type of man was carried and balanced just as it 
now is in us. The eye-socket of Eoanthropus will be 
seen to be set obliquely ; when the skull is viewed in 
true profile, more of the orbit is then to be seen than in 
modern human races, and much more than in anthropoid 
