Work that contains important elements about Spiritism. How it was born and projected. The types of trance: psychic, physiological and cultural.Official means of experimenting with Spiritism in Brazil have been rare. The theoretical efforts of great spiritualists are plausible. But, for the effective observation of the phenomena – discussed here – impartial experimentation is necessary.The study, contained in this book, also addresses the Theory of Spiritist Knowledge, Past Life Therapy and Reincarnation.The psychological structure of the human being today is better known than it was 175 years ago, when the precursors of Spiritism emerged - the Fox sisters.The Author outlines the boundaries of the boundaries of Science and Spiritism.