It may be imagined that experiments of this sort, in which there is no crack, no leak on the side of the living, are anything but easy to carry through. In the case of a murder, for instance, it can always be maintained that the medium discovers the body and the circumstances of the tragedy through the involuntary and unconscious intermediary of the murderer, even when the latter escapes prosecution and suspicion altogether. But a recent incident, related by Dr. Osty with the utmost precision of detail and the most scrupulous verification in the Annales des Sciences Psychiques of April, 1914, perhaps supplies us with one of those experiments which we have not been able to achieve until this day. I give the facts in a few words. On the 2nd of March of this year, M. Etienne Lerasle, an old man of eighty-two, left his son's house at Cours-les-Barres (Cher) for his daily walk and was not seen again. The house stands in the middle of a forest on Baron Jaubert's estate. Vain searches were made in every direction for the missing man's traces; the ponds and pools were dragged to no purpose; and on the 8th of March a careful and systematical exploration of the wood, in which no fewer than twenty-four people took part, led to no result. At last, on the 18th of March, M. Louis Mirault, Baron Jaubert's agent, thought of applying to Dr. Osty, and supplied him with a scarf which the old man had worn. Dr. Osty went to his favourite medium, Mme. M--. He knew only one thing, that the matter concerned an old man of eighty-two, who walked with a slight stoop; and that was all. As soon as Mme. M-- had taken the scarf in her hands, she saw the dead body of an old man lying on the damp ground, in a wood, in the middle of a coppice, beside a horse-shoe pond, near a sort of rock. She traced the road taken by the victim, depicted the buildings which he had passed, his mental condition impaired by age, his fixed intention of dying, his physical appearance, his habitual and characteristic way of carrying his stick, his soft striped shirt, and so on. The accuracy of the description caused the greatest astonishment among the missing man's friends. There was one detail that puzzled them a little: the mention of a rock in a part of the country that possessed none. The search was resumed on the strength of the data supplied by the clairvoyant. But all the rocks in a forest are more or less alike; the indications were not enough; and nothing was found.