PROFESSOR TIEDEMANN ON THE BRAIN OF THE NEGRO. 
515 
The Brain (Cerebrum) of the Negro. 
The Negro brain (Plates XXX. XXXI. XXXII. XXXIII.) which I dissected, as 
well as both the Negro brains which I had the opportunity of seeing in the Museum 
of Comparative Anatomy at Paris, have for the most part the same fornfas the Euro- 
pean brain. The brain is divided by a deep fissure into two hemispheres. In this 
fissure appears the corpus callosum, or the commissura magna cerebri, which unites 
both hemispheres. The anterior portion of the hemispheres is something narrower 
than is usually the case in Europeans. This is particularly remarkable in the brain 
of the Bosjes woman (Plate XXXIV.). The length and height of the hemispheres 
do not visibly differ from that of the European ; their breadth only is something 
less. This is evident from the comparison of the two Negro brains measured by me, 
of a Negro brain examined by the brothers Wenzel, of the brain of a Bosjes woman, 
and of the brains of seven European men and six women, the dimensions of which 
are given in the following Tables : 
Table I. 
Dimensions of the Cerebrum of Negroes. 
Brain of the 
Negro IIonore'. 
Brain of a Negro 
in the Jardin du 
Roi a Paris. 
Brain of the 
Bosjes woman, 
the Hottentot 
Venus. 
Brain of a Negro 
measured by 
the brothers 
Wenzel. 
Length of the cerebrum 
Greatest breadth of the cerebrum .... 
Height of the cerebrum 
in. lin. 
5 10 
4 6 
2 11 
in. lin. 
5 Ilf 
4 9f 
3 
in, lin. 
5 10 
4 4\ 
2 11 
in. lin. 
6 1 
5 0 
Table II. 
Dimensions of the Cerebrum of European Males. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
Length of the cerebrum 
7 2 
6 2 
6 1 
6 1 
6 I 
6 0 
5 9 
Greatest breadth of the cerebrum . . 
5 6 
5 5 
5 3 
5 2 
5 2 
4 9 
4 8 
Height of the cerebrum 
3 10 
3 9 
3 7 
3 5 
3 1 
2 11 
2 10 
Table III. 
Dimensions of the Cerebrum of European Females. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
in. lin. 
Length of the cerebrum 
Greatest breadth of the cerebrum . . 
6 4 
5 6 
6 3 
5 4 
6 1 
5 3 
5 10 
5 8 
5 3 
Height of the cerebrum 
2 11 
2 10| 
2 9 
2 7 
3 
Each hemisphere is subdivided into three lobes, — the anterior, middle, and poste- 
rior lobes, — similar to the European brain. The posterior lobes cover the cerebellum 
3 u 2 
