ects and colours in a light so obscure that
the standers-by cannot distinguish the same with their eyes.

The above phenomena have been, over and over again, verified by the
gentleman whom I before referred to, Mr J. W. Williamson of Whickham;
and not only have I received the accounts of them from himself, but from
two other gentlemen, who repeatedly witnessed their manifestation in
patients at Mr Williamson's residence.

A parallel transposition of the sense of hearing I will exemplify from
the details of a case of catalepsy, or spontaneous trance, as they are
given by the observer, Dr Petetin, an eminent civil and military
physician of Lyons, where he was president of the Medical Society. The
work in which they are given is entitled, "Memoire sur la Catalepsie.
1787."

M. Petetin attended a young married lady in a sort of fit. She lay
seemingly unconscious; when he raised her arm, it remained in the air
where he placed it. Being put to bed, she commenced singing. To stop
her, the doctor placed her limbs each in a different position. This
embarrassed her considerably, but she went on singing. She seemed
perfectly insensible. Pinching the skin, shouting in her ear, nothing
aroused attention. Then it happened that, in arranging her, the doctor's
foot slipped; and, as he recovered himself, half leaning over her, he
said, "how provoking we can't make her leave off singing!" "Ah, doctor,"
she cried, "don't be angry! I won't sing any more," and she stopped. But
shortly she began again; and in vain did the doctor implore her, by the
loudest entreaties, addressed to her ear, to keep her promise and
desist. It then occurred to him to place himself in the same position as
when she heard him before. He raised the bed-clothes, bent his head
towards her stomach, and said, in a loud voice, "Do you, then, mean to
sing forever?" "Oh, what pain you have given me!" she exclaimed--"I
implore you speak lower;" at the same time she passed her hand over the
pit of her stomach. "In what way, then, do you hear?" said Dr Petetin.
"Like any one else," was the answer. "But I am speaking to your
stomach." "Is it possible!" she said. He then tried again whether she
could hear with her ears, speaking even through a tube to aggravate his
voice;--she heard nothing. On his asking her, at the pit of her stomach,
if she had not heard him,--"No," said she, "I am indeed unfortunate."

A cognate phenomenon to the above is _the conversion of the patient'