Anatomical Characters of the Human Brain. 



19 



Ivetzins' Menschenhirn were arranged into two classes to correspond 

 with his types given on Plate 54. This is, of course, more difficult 

 to do and a large number of doubtful ones were necessarily excluded. 

 The classification of the pictures into two groups was made in- 

 dependently by Dr. Melius, Dr. Sabin and myself, none of us know- 



ing at the time Avhether the illustrations in question were of the 

 brains of men or of women. Our results are given in the following 

 table : 



Although our results vary considerably they are substantially 

 similar. In general stenogyrencephaly is a little more common 

 in the Swedish brains pictured by Retzius than in the 97 negro and 

 white brains of Baltimore used in constructing the first ta])lc. Unless 



