What is the precise nature of this tingling sensation? I have carefully questioned those who felt it—and nearly all experimenters feel it sooner or later—and compared their impressions with mine. All the descriptions tally: it is the sensation of a slight pricking, having its seat in the palm of the hand and its maximum intensity on the mounts at the finger-tips. Some persons compare it to the sensation one feels, when lightly touching a mass of pin-points or a stiff brush: others say it seems to them, as though their hands were pierced by small holes, through which something was escaping. The latter sensation is rarer than the former. This tingling sensation has no resemblance whatever with the tingling of a benumbed limb. The experimenters feel these impressions at the beginning of the sitting; they do not always indicate a good seance, but I have noticed that if phenomena are going to be received at all, these sensations are generally perceived beforehand, although, as I say, they can also be felt when phenomena are not forthcoming. (_c_) The sensation of a current passing through the body is less easy to describe. It is of a less precise nature than the preceding one. The majority of persons I have questioned, compare it to the sensation which is produced on them by the passage of an electric current. To me this assimilation has generally appeared approximative. I have sometimes felt this sensation, and can only compare it to a very slight shiver, a kind of feeble vibration, running through the back and arms, especially perceptible to me in my right arm. This sensation, as I feel it, is not continuous; it takes the form of waves rapidly succeeding each other. It is feeble, and, as a rule, I can only perceive it by paying great attention to it; in a few rare cases I have felt it very distinctly. I think that in a great number of cases this sensation is purely subjective, but—as with cool breezes—it does not always seem to be so. It generally accompanies the production of phenomena relatively feeble and continuous, such as raps and gliding movements. I have not always felt it when strong phenomena were forthcoming; but then I was not always in contact with the medium, and often, though I did not feel anything, the medium mentioned having other curious sensations, which I shall speak of presently. Besides, the chain must be formed in order to perceive this sensation of a current with all the accompanying features I have just described; but it is not necessary for the medium to be in the circle. This sensation can also be felt by simply leaning the hands on the table without joining them. This case bears an analogy to the preceding one, if we suppose that the table, serving as a condenser for the emitted energy, suffices in itself to establish a sort of indirect contact with the experimenters. And things seem to happen as though this were really the case.