A dog in this condition no longer fears the whip, no longer responds to his name, no longer steals food.

On the side of his conduct we find that all the actions which he had learned by training now disappear; the trick dog loses all his tricks.
What was called Apperception in the earlier chapter seems to have been taken away with the hemispheres.
Coming to the "first level," the highest of all, both in anatomical position and in the character of the functions over which it presides, we see at once what extraordinary importance it has.

It comprises the cortex of the hemispheres, which taken together are called the cerebrum.

It consists of the parts which we supposed cut out of the pigeon and dog just mentioned; and when we remember what these animals lose by its removal, we see what the normal animal or man owes to the integrity of this organ.

It is above all the organ of mind.