﻿Ixiv PROCEEDINGS OE THE GEOLOGICAL SOCIETY. [May I9IO, 



Authority. 



Bismarck 



Kant 



Bobbe (a robber and 



murderer) 



Mohl (a distinguished 



botanist) 



Do 



Gauss 



Skobelew (General)... 



Mommsen 



Liebig 



Menzel 



Bunsen 



Leibniz. 



Gambetta 



Do 



Cranial 

 capacity. 

 1965 c.c. 

 1715 



Weight of 

 brain. 

 1867 gms. 



1431 



1500 



142: 



1510 



1492 

 1451 

 1429 

 1353 

 1298 

 1295 

 1257 

 1247 

 1160 



Waldeyer. 

 Kupfer & Hagen. 



E. Wagner. 



A. Froriep. 



Buschan-Stettin. 



Rudmeyer. 



Sernoff. 



Hausemann. 



Hausemann. 



Do. 

 His. 

 Duval. 

 Paul Bert. 



It thus appears that there is no apparent reason why a great man 

 should not possess a large brain (Bismarck) ; on the other hand, he 

 may attain the highest flights of genius with a comparatively small 

 one (Leibniz). 



The dissection of the brains of criminals and of distinguished 

 men fails to reveal any characteristic difference between them. 



Since the motor-centre for speech is situated in Broca's area, we 

 might have expected to find some connexion between great linguistic 

 powers and the size or complication of the lower frontal lobe, but 

 even this is not the case. Dr. L. Stieda 1 gives an interesting account 

 of Dr. Georg Sauerwein, who was master of forty or fifty languages ; 

 after his death, at the age of 74, on December 16th, 1904, his 

 brain was dissected by Stieda, but it revealed nothing which could 

 be correlated with his exceptional gift. 



The magnitude and visible complexity of the brain are possibly 

 two of the factors which contribute towards the manifestation of 

 intellect ; but they cannot be the only ones : there must be others 

 of equal or even greater importance, such as the ultimate structure 

 of the grey matter, and the degree of perfection in the adjustment of 

 parts. It is possible that the character of the circulation and the 

 nature of the blood-supply may not be without influence, so that 

 the intellect may actually be an affair not only of the head but the 

 heart. There may be yet other factors of a more recondite 

 character. 



1 ' Das Gehirn eines Sprachkundigen ' Zeitschr. f. Morph. & Anthrop. vol. xi 

 (1908) p. 81. 



