PROFESSOR TIEDEMANN ON THE BRAIN OF THE NEGRO. 
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9. Glosso-pharyngeal nerves. 
10. Par vagum. 
11. Lingual. 
12. Accessory nerves. 
Plate XXXIII. 
Mesial surface of a vertical longitudinal section of the brain of the male Negro. 
a. Mesial convolutions. 
b. Cut surface of cerebellum. 
c. Cut surface of grey substance in the medulla oblongata. 
d. Pons Varolii. 
e. Fourth ventricle. 
f. Valve of Vieussens. 
g. Corpora quadrigemina. 
h. Pineal gland. 
i. Posterior commissure. 
h. Soft commissure. 
1. Great commissure. 
m. Anterior commissure. 
n. Septum lucidum. 
o. Fornix. 
p. Eminentia candicans. 
q. Infundibulum. 
r. Pituitary gland. 
s. Origin of motor oculi nerve. 
t. Decussation of optic nerve. 
Plate XXXIV. 
Brain of a Bosjes woman. 
Plate XXXV. 
Brains of the Orang-Utan and Chimpanzee. 
Fig. 1. Upper surface of the brain of a young Orang (Simla Satyrus, Erxl.). 
2. Base of the same. 
3. Upper surface of the brain of a young Chimpanzee ( Simla Troglodytes, 
Blum.). 
4. Base of the same. 
