^ God's World: A Treatise on Spiritualism Founded on Transcripts of Shorthand Notes Taken Down, Over a Period of Five Years, in the Seance-Room of the William T. Stead Memorial Center (a Religious Body Incorporated Under the Statutes of the State of Illinois), Mrs. Cecil M. Cook, Medium and Pastor. Compiled and Written by Lloyd Kenyon Jones. Chicago, Ill.: The William T. Stead Memorial Center, 1919.
No one truly knows when playing cards began to be used for divination, although as early as the fifteenth century, additional picture cards (trumps) were being added to decks of playing cards. These cards depicted images of gods, heroes, or motifs to express philosophical, social, astronomical, or other ideals. The earliest known mention of the practice of tarot-style cartomancy appears in literature in the 16th century. By the 18th century, simple divination methods using cards appeared in several manuscripts.
But here's the interesting part: the writing samples produced were analyzed and it was found that the complexity scores for the psychographed content were higher than those for the control writing across the board. In particular, the more experienced mediums showed higher complexity scores, which typically would require more activity in the frontal and temporal lobes--but that's precisely the opposite of what was observed.
^ Simeon Edmunds. (1966). Spiritualism: A Critical Survey. Aquarian Press. p. 105. ISBN 978-0850300130 "1876 also saw the first of several exposures of another physical medium, William Eglington, in whose trunk a false beard and a quantity of muslin were found by Archdeacon Colley. He was exposed again in 1880, after which he turned to slate-writing. In this he was exposed by Richard Hodgson and S. J. Davey of the SPR in 1885. Davey a clever conjuror, was able to duplicate all Eglington's phenomena so perfectly that some spiritualists, notably Alfred Russel Wallace, insisted that he too was really a genuine medium."
Theosophy is in opposition to the spiritualist interpretation of evolution. Theosophy teaches a metaphysical theory of evolution mixed with human devolution. Spiritualists do not accept the devolution of the theosophists. To theosophy humanity starts in a state of perfection (see Golden age) and falls into a process of progressive materialization (devolution), developing the mind and losing the spiritual consciousness. After the gathering of experience and growth through repeated reincarnations humanity will regain the original spiritual state, which is now one of self-conscious perfection. Theosophy and spiritualism were both very popular metaphysical schools of thought especially in the early 20th century and thus were always clashing in their different beliefs. Madame Blavatsky was critical of spiritualism; she distanced theosophy from spiritualism as far as she could and allied herself with eastern occultism.