If that be so, we can at once understand the relation, which appears to exist between the mediate or immediate contact of the observers’ hands and the sensation of a ‘current.’ There is something here which is very obscure and very delicate to analyse, but which, if the fact be real, appears to me to indicate the circulation of some thing or other. It is probable that what circulates is precisely the energy used for the production of the abnormal facts I am relating. True, this is only a hypothesis, and I again beg my readers’ pardon for having allowed myself to be drawn into the field of conjecture. I hasten to return to facts. If the sensation of the ‘passage of the current’ be feeble, it is not so with its abrupt interruption. When, for some cause or other—a slight discussion between the operators, the medium’s emotion, a sudden breaking of the chain—the sensation of the passage of the current is interrupted, the interruption is easily felt. It may even cause a sensation of sudden indisposition, if the interruption coincide with the phenomenon in course of production. This is a curious fact, and one easily observable. The sensation of the breaking of the current is distinctly felt; and it is this which makes me think, that the feeble impression of the passage of the current is not altogether imaginary. The sensitiveness of different experimenters varies very much. Some are most susceptible to these influences, others are not at all so, or only very slightly. I remember having recently assisted at a seance with one of my friends, a man well known in the fencing world. My friend, although he is still young, had an attack of apoplexy some years ago. He recovered, and has only retained a very slight hemiparesis of the right side. Medically, he comes under the category of hemiplegics. He appears to be extremely sensitive to the impression I call ‘the passage of the current.’ He compares it to the sensation, which the passage of an electric current produces upon him. He assured me that his right arm was affected by it and benumbed. He told me that he experienced a similar effect when passing near powerful dynamos; he could not, for example, stay long in the gallery of machines at the French Exhibition in 1900, because of the generators of electricity which were installed therein. He had a disagreeable sensation in the right arm; the uneasiness extended from the arm to the neck, and he was obliged to leave the neighbourhood of these electrical machines. In the course of the seance—a very uninteresting one, by the way—he declared that he felt an identical sensation, and he was even compelled to leave the circle. I relate this observation, for the person who made it is an intelligent man, and quite capable of correctly analysing his own sensations. It is needless to add that he was cool and self-possessed, and observed everything free from bias, one way or another.