DR. D. FERRIER ON THE BRAIN OF MONKEYS. 
447 
nation it was found that the bandage had slipped, and that the left eye was partially 
open. On this defect being remedied, it put up its left hand, and tried to pull the 
bandage from the eye. On this being prevented, it sat still and would not move. 
When pushed and forced to move on, it ran its head against every thing in its way. 
When removed into another room it sat still with its head bent, and would not stir. 
Would not come when called to. 
When taken back and placed beside its cage it still refused to move, and grunted 
annoyance if disturbed, or rushed with its head against any thing in its way. After 
it had remained for an hour in this condition the bandage was removed from its left eye. 
On this being done, it began to look around, and on being called to by name, ran to 
me and tried to climb on to my knee as it had 
used to do. This it did on three separate occasions. 
The difference in its attitude after the bandage 
was removed was as striking as in Exp. VII., and 
indicated restoration of sight. 
January 6th . — On account of the paralytic 
condition of its right side, and the suppuration 
going on in its wound, it was chloroformed to 
death. 
Post mortem Examination . — The postero-pari- 
etal lobule, ascending parietal, and upper part of 
the ascending frontal convolutions, with the an- 
gular gyrus were softened and disorganized (see 
fig. 10). The rest of the brain was quite normal 
in appearance. 
Experiment IX. 
April Itli, 1875.— This animal was used for an experiment on the superior temporo- 
sphenoidal convolutions on both sides. These were exposed; but previous to their 
destruction the angular gyrus was exposed on the left side for the purpose of demon- 
stration of the effects of destruction of this convolution to Dr. Burdon Sanderson and 
Dr. Lauder Brunton. At 3.30 p.m. the angular gyrus was exposed, and its surface 
destroyed accurately by means of the blowpipe cautery. 
The left eye was securely closed by means of plaster, and the animal placed on the 
floor. 
After a few minutes it began to move about, which it did very irregularly, some- 
times going backwards, and occasionally turning round and round. 
4.20 p.m. The animal is more lively, but sprawls about on the floor, and does not make 
any regular progression. Drank some tea held to its lips. 
4.55 p.m. Answers with a grunt, or makes mouths when called to. Sprawls about on 
the floor or goes backwards. When placed close to the door of its cage makes no 
Fig. 10. 
Fig. 10 represents the left hemisphere of 
the brain of the monkey, the shaded part indi- 
cating the extent to which the surface was 
destroyed in Experiment Till. 
