550 
PROFESSORS D. FERRIER AND G. F. TEO ON THE EFFECTS OF 
A heated wire seemed not at all perceived on the right foot, and if at all only 
barely on the right hand. The same stimulation on the left caused active signs of 
sensation. Tickling of the right nostril with a spill of paper caused no particular 
sign, whereas on the left the animal resented it much and made grimaces of un¬ 
easiness. 
It l^id hold of food offered it almost exclusively with the left hand. Occasionally it ‘ 
used the right and allowed the things to drop. 
These observations were made in the morning of the fourth day. The animal was 
found dead in the evening. 
Post-mortem examination .—On removal of the dressings the edges of the wound 
were found united except at the anterior extremity. There was no suppuration. On 
reflection of the integuments, a clot was found projecting from the orifice of the 
skull, above the left ear. On removal of the brain the left middle fossa was found 
filled with a quantity of broken-down cerebral substance and recent effusion which had 
come from the injured temporo-sphenoidal lobe. There was no appearance of in¬ 
flammation or suppuration either on the convexity or base of the brain, and no 
effusion except the recent haemorrhage in the middle fossa. 
The cranial nerves were intact, and the cerebellum uninjured. The pia mater 
stripped readily from the wdrole surface. The optic tracts, corpora geniculata, corpora 
opiadrigemina and crura cerebri were perfectly normal. The inner margin of the 
gyrus hippocampi was intact, with the exception of a fissure which ran across it at 
the lower third (fig. 134). 
The left hemisphere in the region of the incisura pras-occipitalis (fig. 133) was 
somewhat eroded and raised above the surrounding 1 cortex, and from thence in the 
occipito-temporal aspect of the hemisphere there was an irregular lesion destroying 
the inferior temporo-sphenoidal convolution, and, as seen superficially, the middle of 
the gyrus hippocampi across which a crack ran into the hippocampal fissure. 
The surface of the region of the uncus seemed intact, and also the region between 
the calcarine and collateral fissure—the lingual lobule. 
Frontal sections of the hemisphere (figs. 135-140), at right angles to the longi¬ 
tudinal axis, showed that the region of the calcarine fissure—the calcar avis— 
was intact. But opposite the point where the calcarine and hippocampal fissures 
became continuous with each other (fig. 135) the lesion broke down the external wall 
of the posterior cornu of the lateral ventricle, and continuing forwards as seen in 
figs. 136, 137, and 138, entirely detached the inferior temporo-sphenoidal and hip¬ 
pocampal region. Further in advance (fig. 139) portions of the hippocampal region 
still remained attached, but the medullary fibres were yellowish and softened and 
nearly severed. 
At the extremity of the descending cornu and region of the nucleus amygdalae 
the cortex and medullary fibres were uninjured (fig. 140). 
Apart from the lesion of the cortex and medullary fibres of the inferior ternporo 
