Our generation has almost forgotten the convincing experiments in telepathy carried out by the Sidgwicks and Professor Barrett, and no longer quotes the Stainton Moses phenomena which Myers accepted. The call is for the production of fresh data collected by our own contemporaries. Without therefore troubling ourselves unduly for the time being with explanations and theories about the facts, without intruding into the work the will to believe or disbelieve, let us devote ourselves to experiment and empirical facts. Surely among the thousand members of the Society for Psychical Research, to go no further, enough recruits could be found to supplement adequately by their own unselfish efforts the splendid work of our own pioneers in Great Britain and America. Further, in the process of accumulating and systematizing our facts we must accept as an axiom of unquestioned validity that natural and normal causes must be eliminated before we have recourse to the supernatural or supernormal. In other words, we must regard it as _prima facie_ more probable that the medium is consciously or unconsciously fraudulent or that the sitters are the victims of credulity or malobservation than that men and women possess a capacity for acquiring knowledge or influencing matter which transcends the recognized facts of ordinary experience. Our course then as psychical researchers is clear. We must exercise such drastic and complete control over the whole course of our experiments as to render deception an unthinkable hypothesis. That such methods of control exist and can be applied is indubitable: that they are occasionally absent from _séances_ conducted by scientific and educated persons must equally be admitted. Podmore revealed several defects in the alleged safeguards against fraud accepted in certain experiments with Florence Cook and even D. D. Home; and quotes a serious instance of careless description in the record of the famous experience of the London Dialectical Society with the latter medium: where the statement that “the room was illumined by moonlight” is shewn from the calendar (as in the parallel of Sir John Moore’s burial) to have been incorrect. In more recent times the conditions observed in Warsaw and in Paris with the mediums Kluski and Gujik have been sometimes unsatisfactory. Nor can any impartial critic, in view of the surprisingly lax conditions which prevailed, necessarily accept the widely recorded successes of Professor Gilbert Murray in thought-transference as manifestations of anything abnormal or unusual. In the case of any less distinguished performer it would have been difficult to regard such experiments, in the absence of any repetition of them under test conditions, as worth the serious consideration of a scientific body.