Abstract

"An apparition may be roughly defined as a visible but non-physical phenomenon closely resembling a particular human being." Occasionally, apparitional experiences have auditory and tactual aspects. 2 theories have been suggested to explain apparitions: the "telepathic theory" which was most fully developed by Tyrrell and the "theory of the double." Both theories could be correct if there are 2 quite distinct types of apparitions. " . . . if we reconsider old facts to test them, we may eventually be able to think of a new theory which will be better than either of them."