30 PREFACE. described things which were unknown to the person who rang him up, and the descriptions had to be verified later on. Mr. Turvey, it will be noted, frankly ex- presses his belief in the existence of “ spirits,” with whom the ‘‘spirit” that is in each of us can on occasion enter into communication. That fact will, of course, be used to discredit his testimony, especially by those who have gone crazy over the telepathic hypothesis. But, as Dr. Hyslop recently remarked in the Proceedings of the American Psychical Re- search Society, the hypothesis of “spirit” intercourse is quite as respectable as that of telepathy, and is much more scientific. “To make such suppositions as the average telepathic devotee makes is a travesty of every- thing that we can regard as scientifically sane or legitimate. Telepathy explains nothing, and is serviceable only for fooling sceptics and stupid prejudices. Spirits are as admissible possibilities as telepathy even is as a fact, and a hundredfold more explanatory, so that from the scientific side of the question they are preferable.” But no one is obliged to assent to, or dissent from, Mr. Turvey’s hypothesis. What we have to do with is Mr. Turvey’s narrative of