40. The study of the properties of the perispirit, of the spiritual fluids, and of the physiological attributes of the soul, opens new horizons to science, and gives the key to a great number of unknown phenomena, the laws which rule them being until now unknown. Phenomena are denied by materialism because they are linked with Spiritism, and, because called by another name than miracles or supernatural occurrences, are ignored by those of supernatural belief. Among others are the phenomena of double sight, visions of objects at a distance, natural and artificial somnambulism, psychic effects of catalepsy and lethargy, prescience, presentiments, apparitions, transfigurations, the transmission of thought, fascination, instantaneous cures, obsessions and possessions, etc. In demonstrating that these phenomena repose upon laws as natural as the electrical, and that there exist normal conditions in which they can be reproduced, Spiritism destroys the empire of the marvelous and supernatural, and consequently the source of the greater part of superstition. If it founds a belief in the possibility of certain things regarded by some as chimerical, it precludes one from believing in others of which it has demonstrated the impossibility and irrationality.