126 



be. a. smith woodward : DESCRIPTION of [March 1913, 



noteworthy. The external occipital protuberance (inion) seems 

 to form the hindmost point of the cranium, though the portion 

 of the occipital immediately above it is in an almost vertical 

 plane. 



In back view (norma occipitalis, PI. XVIII, fig. 4), the contour 

 of the skull is very remarkable. It is relatively low and wide., 

 and gently arched above, with the sides flattened in their upper 

 half, and the mastoid region either vertical or slightly inclined 

 inwards. 



Fig. 3. — Sagittal section of the Piltdoivn skull (blade) superposed 

 on that of a skull from Lewes Levels (dotted), half of the 

 natural size. H=inion of the Piltdoivn skull; ~S.= inion of the 

 Lewes skull. 



The capacity of the brain-case cannot, of course, be exactly 

 determined ; but measurements both by millet-seed and by water 

 show that it must have been at least 1070 c.c, while a con- 

 sideration of the missing parts suggests that it may have been a 

 little more. It therefore agrees closely with the capacity of the 

 brain-case of the Gibraltar skull, as determined by Prof. Keith, 1 and 

 equals that of some of the lowest skulls of the existing Australians. 

 It is much below that of the Mousterian skulls from Spy 2 and 



1 A. Keith, ' Ancient Types of Man ' 1911. p. 125. 



2 Id. ibid. p. 112. 



