CMS 



Figure i: Right lateral view of the Taung skull, type specimen of Austra- 

 lopithecus africanus. The endocast is beautifully preserved and shows 

 much detail of convolutional and vascular impressions. (A) impression of 

 occipital pole of cerebrum; (B) impression of right lateral sinus, curving 

 over the cerebellum; (C) impression of cerebellar hemisphere; (D) por- 

 tion of petrous temporal bone preserved between impressions of cere- 

 bellum and temporal lobe of cerebrum. 



elegant concepts of modern neurology, and I blanch before the ever more 

 refined techniques being focussed on the central nervous system. Brains are 

 being studied by electron microscopy, biochemical analyses, autoradi- 

 ography, ultraviolet absorption spectromicrophotometry, cybernetic models, 

 tissue culture, and a host of other methods. 



It seems incomprehensible, in the light of such developments, that any- 

 thing at all remains to be said about so gross and crude a measure as the 

 overall size of the brain. But it is an amazing yet inescapable fact that a 

 great deal remains to be said, for much that has already been asserted about 



5* 2 



