(15) 
NOTE UPON THE ENDOCEANIAL CAST OBTAINED FEOM THE 
ANCIENT CALYAEIA EOUND AT BOSKOP, TEANSYAAL. 
By a. Elliot Smith, M.A., M.D., F.E.C.P., E.E.S. 
(With Plate XL) 
Dr. Peringuey has submitted to me for examination and report a plaster 
cast representing the form of the cranial cavity of the skull-cap from Boskop 
described by Mr. S. H. Haughton. Unfortunately I am labouring under the 
disadvantage of not having seen the calvaria itself, or even a model of it ; 
and experience has strongly impressed upon me the importance of studying 
the cranium itself when attempting to interpret the significance of a mould 
of its interior. However, I have to thank Dr. Peringuey for allowing me 
to see the proofs of Mr. Haughton's interesting preliminary note on the 
skull-cap. 
Under these circumstances all that I propose to do at present is to write 
a note upon the intracranial cast, which I shall consider more fully when I 
have had an opportunity of examining a cast of the calvaria itself. 
The mould submitted to me by Dr. Peringuey reveals the form of that 
part of the cranial cavity which is bounded by the greater part of the 
frontal, more than two-thirds of the parietals, and a small area of the upper 
part of the occipital bone. Its maximum length attains the remarkable 
figure of 197 mm. The lack of the lower parts of both parietal bones 
makes it impossible directly to measure the maximum breadth, but it must 
have been at least 143 mm. 
The breadth at the coronal suture, the position of which is clearly defined 
on the cast (Plate XI, fig. 1), is 118 mm. In the absence of the base of 
the skull it is not possible to record the actual height of the cranial cavity ; 
but, according to Mr. Haughton's projections, it must have been a little 
greater than the corresponding measurements of the Cro-Magnon man and 
the loftiest of the skulls (Spy II) representative of the Neanderthal group, 
and approximately identical with that of the mean of twelve Bechuana 
crania examined by him. 
In view of the great breadth of the Boskop skull, however, the intra- 
