A Study of Cerebral Anthropology 27 



Cunningham in 33 per cent., Sernoff in 12.5 per cent., Weinberg 

 in 14 per cent., Tenchini in 14 per cent., and Eberstaller in 24 

 per cent. These figures represent a large number of brains and 

 extensive distribution as to race. It seems to me that there is not 

 sufficient divergence in the figures to lead one to believe that there 

 is any significance in the condition, at least from a psychical stand- 

 point. Smith (1904) thinks such data useless, since the condi- 

 tion can only represent the result of a purely mechanical process 

 in the development of the cerebrum. 



CASES OF INTERRUPTION OF THE SULCUS CENTRALIS 

 Author. No of Drains No. of Cases Found. 



Bjaschkow (1886) 2 



Brevor ( 1906) i 



Dana (1894) i 



Debierre ( 1891 ) I 



Eberstaller ( 1890) 100 2 



Fere (1876) 800 4 



Giacomini ( 1884) 336 I 



Giannelli ( 1908) 4 



HeschI (1877) 1087 6 



Ladame ( 1900) I 



Lattes ( 1906) I 



Leggiadri-Laura ( 1900) 484 3 



Saporito (1898) 67 9 



Seitz (1886) I 



Spitzka ( 1902a) I 



Wagner (1862) I 



Tenchini (1891) 114 IS 



Thomson ( 191 1 ) 2 



Wilder (1889) 2 



Waterson ( 1907) I 



Weinberg ( 1906) 50 2 



The superior end of the sulcus centralis may reach beyond the 

 border of the hemisphere or terminate on the superior surface. 

 Union of this extremity with the sulcus cinguli has been described 

 by Benedikt, but I have been unable to find any other case of such 

 confluence recorded. Weinberg (1902) found that the sulcus 

 reached the mesial border or beyond in 22 per cent., Retzius in 

 64 per cent., and Tenchini (1883) in 5 per cent. Sergi (1904) 



371 



