4^4 
Sir Everard Home's Observations 
SECTION VIII. 
Effects of injury to the substance of the Brain. 
A deep wound into the right anterior lobe of the brain, at- 
tended with inflammation and suppuration, produced no sen^ 
sation whatever ; the senses remained entire, and the person 
did not know that the head was injured.^' 
The brain shooting out in the form of fungus, after the dura 
mater is wounded, has no effect upon any of the nerves, nor 
is it attended with sensation ;-f but the inflamed pia mater 
gives great pain. 
Loss of a portion of the medullary substance of the anterior 
lobe of the cerebrum, produced no symptoms. J Loss of a por- 
tion of one of the hemispheres was attended with difficulty of 
swallowing for twenty-four hours, and slight delirium of 
short duration. § Ulceration of the anterior lobe of the brain, 
as low as the anterior cornu of the lateral ventricle, but not 
communicating with it, paralysis of both arms.(| 
• From an explosion of gun-powder, apiece of copper three inches long was forced 
through the eye into the brain ; but the arm being also wounded, the person never 
knew the eye to be injured. When suppuration came on he became insensible, and 
in a few hours died. 
f A fungus from the brain shot out through the dura mater after the operation of 
the trepan, upon the left parietal bone. The pia mater surrounding it was so sen- 
sible, that when touched, the pain was excruciating. 
J A boy five years of age, fractured his skull, and wounded tke brain, half an 
ounce came away. When he grew up he was more acute, and had a better memory 
than his brother. 
^ A fracture of the parietal bone, and wound of the dura mater, produced the in- 
jury to the brain. 
II The ulceration look place in consequence of the trepan wounding the dura and 
pia mater. 
