524 PROFESSOR MARSHALL ON THE BRAIN OE A BUSH WOMAN ; AND 
high numbers as 600 and 780, evidently counted all the laminae he could find. I have 
adopted the plan of counting the superficial laminae only in the principal lobes and 
superior vermiform process ; whereas in the smaller parts of the organ, and in the infe- 
rior vermiform process, all the laminae have been counted. The following Tables show 
the results in the European, the Bushwoman, and the Chimpanzee, for the left half of 
the cerebellum. 
Superficial laminae only counted. 
Median 
portion. 
Lateral parts. 
Total 
laminae in 
lateral 
parts. 
Superior 
vermiform 
process. 
Square 
lobe. 
Posterior 
superior 
lobe. 
Amygdala. 
Biventral 
lobe. 
Slender 
lobe. 
Posterior 
inferior 
lobe. 
European 
18 
21 
13 
9 
6 
5 
16 
70 
Bushwoman 
23 
21 
14 
8 
9 
5 
14 
71 
Chimpanzee 
20 
23 
10 
8 
4 
11 
5 
63 
Superficial and deep laminae counted. 
Median portion. 
Lateral parts. 
Inferior 
vermiform 
process. 
1 viz. Pyramid 
j and uvula. 
Nodule. 
Amygdala. 
Floccule. 
European 
37 
= 28 + 
9 
21 
18 
Bushwoman 
33 
= 24 + 
9 
20 
17 
Chimpanzee 
34 
= 29 + 
5 
22 
17 
As thus counted, the number of laminae in the Bushwoman’s cerebellum agrees very 
closely with that in the European, the differences being probably only such as might be 
met with between individuals of either race. The total number in the lateral parts or 
hemispheres is nearly identical. The differences between the upper and lower posterior 
lobes nearly compensate each other, as do those between the amygdalae and biventral 
lobes ; the square and slender lobes exactly agree. In the median portion the chief 
point of difference is found, viz. in the larger number of laminae in the upper vermiform 
process of the Bushwoman ; but then there is a smaller number in the pyramid and 
uvula of the lower vermiform process : the nodules coincide. It is worthy of note that, 
in the Bushwoman, the amygdala and floccule show but a slight defect in the number of 
their laminae, although both those parts are so remarkably small. Indeed the total 
deficiency in weight, which has previously been shown to exist in the Bushwoman’s 
cerebellum, depends essentially, not on the absence of any parts or laminae, but on the 
narrowness of these latter ; for they are obviously much finer than in the European 
brain. 
In the Chimpanzee the square lobe occupies more of the upper surface of the hemi- 
sphere than in the European cerebellum, whilst the Bushwoman’s cerebellum presents 
an intermediate condition. The upper posterior lobe is consequently straighter in the 
