https://doi.org/10.1177/0957154X17734782 History of Psychiatry 2018, Vol. 29(1) 110–125 © The Author(s) 2017 Reprints and permissions: sagepub.co.uk/journalsPermissions.nav DOI: 10.1177/0957154X17734782 journals.sagepub.com/home/hpy Classic Text No. 113 Final chapter, From India to the Planet Mars: A Study of a Case of Somnambulism with Glossolalia, by Théodore Flournoy (1900) With an introduction by Everton de Oliveira Maraldi University of São Paulo, Brazil Carlos S Alvarado Parapsychology Foundation, USA Abstract Among the many attempts to explain mediumship psychologically at the turn of the century were the efforts of Swiss psychologist Théodore Flournoy (1854–1920). In his well-known book Des Indes à la Planète Mars (1900), translated as From India to the Planet Mars (1900), Flournoy analysed the mediumistic productions of medium Hélène Smith (1861–1929), consisting of accounts of previous lives in France and in India, and material about planet Mars. Flournoy explained the phenomena as a function of cryptomnesia, suggestive influences, and subconscious creativity, analyses that influenced both psychology and psychical research. The purpose of this Classic Text is to reprint the conclusion of Flournoy’s study, whose ideas were developed in the context of psychological attention to mediumship and secondary personalities. Keywords Dissociation, Hélène Smith, mediumship, psychical research, subconscious creativity, Théodore Flournoy Introduction: Théodore Flournoy and the construction of mediumistic romances Writing in his influential book The Discovery of the Unconscious, Henri F. Ellenberger (1905– 1993) identified four major activities in which the unconscious mind was involved (Ellenberger, 1970: 317–18). These were those concerned with dissolution (interfering with functions), as well as with the preservation of mental content (such as precepts and recollections), and those Corresponding author: Everton de Oliveira Maraldi, University of São Paulo, 1721 Prof. Mello Moraes Avenue, 05508-030, Brazil. Email: evertonom@usp.br 734782HPY 0 0 10.1177/0957154X17734782History of PsychiatryMaraldi and Alvarado earch-article 2017