The second proof is, that though there be no disease in the brain,
[or in the members in which the organs of the external senses are],
it is nevertheless sufficient to take away sensation from the part
of the body where the nerves terminate, if only the movement of one
of the nerves that extend from the brain to these members be
obstructed in any part of the distance that is between the two. And
the last proof is, that we sometimes feel pain as if in certain of
our members, the cause of which, however, is not in these members
where it is felt, but somewhere nearer the brain, through which the
nerves pass that give to the mind the sensation of it. I could
establish this fact by innumerable experiments; I will here,
however, merely refer to one of them. A girl suffering from a bad
ulcer in the hand, had her eyes bandaged whenever the surgeon came
to visit her, not being able to bear the sight of the dressing of
the sore; and, the gangrene having spread, after the expiry of a few
days the arm was amputated from the elbow [without the girl's
knowledge]; linen cloths tied one above the other were substituted
in place of the part amputated, so that she remained for some time
without knowing that the operation had been performed, and meanwhile
she complained of feeling various pains, sometimes in one finger of
the hand that was cut off, and sometimes in another.
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