NERVOUS SYSTEM 



169 



According to Spitzka, the brains of mathematicians and 

 astronomers are heavier than those of any other class of in- 

 tellectually cultured men. 



Ranke l gives some very instructive tables on the authority 

 of Carus, Joh. Miiller and v. Bischoff, on the relative weight 

 of the brain, i.e., the proportion borne by the brain to the rest 

 of the body. 



In small Middle European singing birds 



., the tufted capuchin .... 



.. common marmoset 



common squirrel-monkey . 



smooth-headed capuchin 



magpie 



rat . 



wan- wan gibbon .... 



German (woman) 



mole 



., German (man) .... 



,. teetee monkey .... 



lemur ..... 



,. half-grown orang 



chimpanzee 



, cat 



macaque 



adult gorilla 



tapir . 



pigeon 



eagle . 



lizard . 



frog . 



dog . 



carp . 



fowl . 



sheep 



goose . 



salamander 



horse . 



young elephant 



12-28 



13 



22 

 24 



25 

 28 

 28 



28(- 4 8) 



35 

 36-16 



42 



82(-i56) 



96 



1 04 (-170) 



104 



1 60 



r6o 



1 60 



172 



2i4(-304) 



248 



347 

 35i 



380 



40o(-7oo) 



500 



1 Ranke, loc. cit., i., p. 535. 



