a n</ tlnir 





How is it possible to tell anything of the qual- 

 ity of a brain whose owner existed several 

 million years ago ? But, as we all know, the 

 quality of a brain depends on the extent of 

 the gray portion, and this in turn is related to 

 the convolutions or infoldings of the outer 

 sin-face. These convolutions are impressed on 

 the inner surface of the skull, and where the 

 cranium of an animal has been preserved in 

 good shape, it is possible to cut away a por- 

 tion, remove the stone filling the cavity once 

 occupied by the brain, and then make a cast 

 that will show the proportions of the brain 

 and the shape and extent of the principal con- 

 volutions. But to return to the physical char- 

 acters of the anomodonts. It may be said 

 that while many were large others were small, 

 and Professor Cope gives their range of size as 

 from that of a rat up to the bulk of a lion ; 

 besides, we must always remember that the 

 larger the animal and the more solid its bones, 

 the greater not only were the chances of preser- 

 vation, but of being eventually discovered. This 

 loss of small animals gives an undue emphasis 



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