Differs from other psychical research journals mainly in its emphasis on individual experimentation to achieve the states studied. In its initial issue it called on those "tired of purely theoretical and sterile discussions in which the majority of psychical research associations and occultists" to read its practical advice. Learned disquisitions on the astral body and methods for dedoublement personnel (including an article on the dedoublement d'un chat), photographing the invisible, spirit-writing on mirrors, psychic color perception, and the like. Contributions by A. de Rochas (who was honorary President of the Institute), Carra de Vaux, Charles Lancelin, Jean de Kosloff, H. Boucher, et al. The Institute ran its own school for mediums in Paris. Noted in Psychische Studien, 1912.