other worldmaterialize. Closely related to the concept of the ectoplasm is the aura, a colored emanation that supposedly surrounds all individuals and that can be perceived by the medium. By noting variations in the hues of a person's aura, the medium is able to describe his personality, needs, and illnesses. The shriveling of the aura is considered a sign of an impending death. In what is known as solar plexus voice mediumship, a spirit appears to speak through a medium's body. Modern spiritism in the United States dates from the activities of the Fox sisters in 1848. Such notable figures as Andrew Jackson Davis, Daniel Dunglas Home, Helena Petrovna Blavatsky, and Arthur Conan Doyle later became widely known spiritualists. The Society for Psychical Research has carried on investigations with some phenomena, mainly in connection with telepathy and apparitions, in hopes of finding scientific explanations for various spiritualistic occurrences (see parapsychology ).
See A. F. Schrenck von Notzing, Phenomena of Materialization (1920) Sir Arthur Conan Doyle, History of Spiritualism (1926) Sir Oliver Lodge, Phantom Walls (1930) S. E. White, The Unobstructed Universe (repr. 1959) G. K. Nelson, Spiritualism and Society (1969) S. Brown, The Heyday of Spiritualism (1970).
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
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