331 
Of the numerous fragments of bones of animals found in the 
same cave with the remains of the Rhodesian Man some have been 
identified as belonging to species still living in Rhodesia or to others 
only slightly different from these. This renders it probable that the 
time of his occupation of the cave even falls after the Plistocene 
period. It seems that the bones are not petrified in the ordinary 
way, but they are impregnated with phosphates of lead and zinc. 
The Rhodesian Man may all the same be an archaic form; in the 
same way the living Ocapia comes closer to the tertiary Hellado- 
therium and Samotherium than to the Giraffe. 
/ 
ie 
See 
~ Sa / 
— PITHECANTHROPUS Bai 
—-—-— LA CHAPELLE - AUX - SAINTS 
Fig. 6. Right side-views of the endocranial casts of Pithecanthropus 
erectus and the La Chapelle-aux-Saints neandertalian. Both, 
especially Pithecanthropus, somewhat more than 1/2 of nat. size. 
The above considerations are also valid for the fossil Ape Man of Java. 
The shape of the calvaria of Pithecanthropus erectus is almost entirely 
the same as that of the small gibbon species; only the parietal 
region is somewhat more flattened. This resemblance can only be 
seen by the endocranial cast, as the nuchal tabular part of the occi- 
pital bone is defective, also as regards its thickness. This nuchal 
tabula is almost as steep as in gibbon skulls, quite different from 
that of the Neandertal Man (Fig. 6); the external profile line of the 
defective calvaria does not show this. Besides — different from what 
was inferred by many investigators from the plaster cast — the 
post-orbital constriction has a pithecoid situation, as indeed the pro- 
portion between the volume of the orbits and the cranial cavity is 
not human, and the greatest breadth of the skull lies as far towards 
the occiput as in the Gibbons; — in this post-orbital region the calvaria 
is defective on the left. Thus from the capacity of the superior part 
