1858 Conferences and books, creation of the Parisian Society of Psychical Researchs, Allan Kardec is the uncontested leader of a popular and powerful movement. 1869 Allan Kardec's death. His death involves the decline of the spiritist movement. The spirits existence is throwing back. The first world war marks on a new stopping place for the spiritism's research.
Spirits appear in private reunions.
1919 Gustave Geley is director of The International Metapsychic Institut, recognized to public utility. The absence of calibre successors and the second world war involve Spiritism in the forgetting.