human
So one can assert, without trying to draw any other conclusions, that certain vibratory states of the brain, and probably of the nervous system, are capable of storing themselves in a magnetized bent strip of metal, as the magnetic fluid is stored in the soft bar of iron, and of leaving persistent traces; still further, that one can only destroy this persistent magnetic property by fire. The crown has to be red-hot before it ceases to act, as M. D'Arsonval found to be the case with the iron bar.
gpt
The same phenomenon would certainly have been produced had the patient been dead, and so one might by this means have a sort of evocation of a personality no longer of this world.