556 PROFESSOR MARSHALL ON THE BRAIN OE A BTTSHWOMAN ; AND 
PLATE XIX. 
Eig. 5. The left hemisphere of the same brain, detached from its peduncle, showing the 
under surface with the inner surface foreshortened. 
Fig. 6. Horizontal dissection of the same hemisphere, showing the left lateral ventricle 
laid open : a, body of the ventricle and optic thalamus ; b , anterior cornu ; 
c , posterior cornu ; d, commencement of middle cornu ; e, hippocampus 
major; /, hippocampus minor; g, eminentia collateralis ; A, corpus striatum. 
PLATE XX. 
Fig. 7. Convolutions of the upper surface of a European brain, shown in outline (from 
Gratiolet). 
Fig. 8. Corresponding view of the brain of the Hottentot Venus (from Gratiolet). 
Fig. 9. Corresponding view of the brain of the Bushwoman. To suit the size of the 
page, these comparative views of the upper cerebral convolutions in the 
European, the Hottentot Venus, and the Bushwoman, are reduced to three- 
fourths of their proper linear dimensions. But it must be observed that the 
originals of figures 7 and 8 are of the full size of the recent or restored brains ; 
whilst the original figure of the Bushwoman’s brain (figure 1 of this memoir) 
is of the size of that organ after it had become shrunk from maceration in 
spirit. Judging from the measurements of the interior of the Bushwoman’s 
skull, this reduced figure of her brain should be about x^-th of an inch 
shorter than that of the brain of the Hottentot Venus. 
PLATE XXI. 
Fig. 10. Upper surface of the preserved brain of a female idiot, aged 42 years. 
Fig. 11. Under surface, or base, of the same brain: o, olfactory sulcus. 
Fig. 12. Left side of the same brain. 
Fig. 13. Vertical median section of the same brain, showing the inner surface of the 
left hemisphere of the cerebrum, with the cut surfaces of the corpus 
callosum (c), cerebral peduncle, cerebellum, pons Varolii (jp), medulla oblon- 
gata, and other parts. 
PLATE XXII. 
Fig. 14. Upper surface of the preserved brain of a male idiot, aged 12 years. 
Fig. 15. Under surface, or base, of the same brain : o, olfaotory sulcus. 
Fig. 16. Left side of the same brain. 
Fig. 17. Bight hemisphere of the same brain, detached from its peduncle, showing the 
internal and under surfaces. The frontal region is turned to the left hand of 
the observer. The section of the corpus callosum ( c ) is also shown. 
