Eugène Caslant was born on December 1, 1865 in Nanteuil-le-Haudouin, France. As a brilliant student, he studied at the Polytechnic School and moved towards the army. As a career soldier, his interest in the psychic faculties led him to professionally experiment this field. He became interested in the work of Annie Besant, theosopher and Camille Flammarion, spiritualist. He died in 1940.