Читать книгу Psychic Phenomena - Edward T. Bennett - Страница 11

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If the tipping of small tables when the hands of the sitters are in contact is excepted—under which circumstances it is generally impossible to determine whether the result is psychical, or due merely to muscular action unconsciously exercised—the production of raps and other sounds is the most frequent of the phenomena under consideration. They are, however, generally so intermixed with other phenomena that it is difficult to treat them separately.