456 
DR. D. EERRIER ON THE BRAIN OE MONKEYS. 
region of the annectent gyrus passing from the posterior limb of the angular gyrus into 
the occipital lobe on both sides. 
By means of hot wires the temporo-sphenoidal lobe was divided transversely in this 
region, care being taken to avoid crossing the fissure of Sylvius, and also to avoid the 
crura and optic tracts. 
The wires were also directed downwards and forwards, so as to break up the lobe as 
far as possible in the interior. This was carried out much more completely on the left 
than on the right side. 
The operation was completed at 4 p.m. 
4.30 p.m. The animal has recovered from its chloroform stupor, and moves about 
rather unsteadily. 
It evidently retained its sight, as it directed its course to the fireplace, where it sat 
down to warm itself. 
5 p.m. Drank a dish of tea offered to it. It sits still with its head bent on the floor, 
and seems disinclined to move. It has no muscular paralysis, and can hold on by both 
feet and hands. Sits, however, very unsteadily when perched on the back of a chair. 
Gives no sign of hearing when called to, as it used. 
There is distinct reaction to the application of a hot iron to any part of its body, 
though there seems somewhat less reaction on the right side as compared with 
the left. 
11.30 p.m. Is more lively, and looks about intelligently, and seems to walk somewhat 
more steadily. 
February 3rd. — 10.30 a.m. The animal was found sitting quietly with its head bent. 
On being roused and offered some milk, it drank a very little, but kept moving its lips 
about in the liquid, without continuing to drink. 
Made no response when a loud sound was made close to its cage. 
When taken out of its cage it moved only when nudged, and then made its way to 
the fire, where it sat down, holding on to the fender, enjoying the heat. 
When tested with the hot iron there was found to be very decided diminution of 
sensation on the right side, on ears, hands, and feet. 
There was no muscular flaccidity of the limbs or distortion of the face. A shrill 
sound made close to its ear caused it to start somewhat. 
1 p.m. The animal was fed with milk, as it did not seem inclined to eat of its own 
accord. 
Made no sign of reaction when acetic acid was held before its nostrils or placed in 
its mouth. 
7 p.m. When acetic acid was placed within its nostrils it appeared to suffer from 
irritation, and at last a kind of sneeze was effected. 
With the left hand it tried to clear away the offending matter from its left nostril, 
but made only a kind of attempt with the right hand to the right nostril, not succeed- 
ing in localizing the seat of irritation. Opened its eyes slightly when loudly called . 
