890 THE EXTERNAL CONFIGURATION 



perhaps, most frequently found that the greatest breadth 

 of the brain is behind its median transverse axis, and that 

 its posterior is more bluntly rounded than its anterior 

 extremity. 



Looked at from the side, the Brain presents certain 

 obvious differences when we compare such simple forms 

 as that of the ' Hottentot Yenus ' and the Bush woman, or 

 even that of Krebs the artizan, with one of the highly 

 evolved organs pertaining to a man of great and subtle 

 intellect, such as Gauss. 



One of the most notable characteristics of the Brain 

 of Gauss is to be found in the great development of the 

 Frontal Lobes. This is rendered evident by the fact of 

 their comparative length, breadth and height, and also by 

 reason of the extreme complicacy of their three tiers of 

 convolutions (fig. 142, a\ a^, a^). Wagner gives a full-size 

 representation of these lobes, viewed from the front, and 

 also, for comparison, a similar view of the frontal lobes of 

 the artizan Krebs. The difference between them is very 

 marked. 



The writer has in his possession the brain of another 

 celebrated mathematician, the late Professor De Morgan, 

 and although in it the frontal lobes are likewise large and 

 well developed, their convolutions are by no means so intri- 

 cate as in that of Gauss. But in the brain of a Journalist 

 (formerly a Clergyman) who died some years ago in 

 University College Hospital, the size of the frontal lobes 

 is distinctly greater, and the intricacy of their convolutions 

 altogether remarkable — fully equalling, even if it does 

 not exceed, that met with in the brain of Gauss. In other 

 regions also this brain, of an educated though not distin- 

 guished man, is rather more highly convoluted than that 

 of T)e Morgan, as it is also distinctly heavier. It was 

 preserved, indeed, both because it was the brain of a well- 



