It is, however, in my view, by no means improbable that effluences, as yet unknown to science, but perceptible by sensitive persons as the telepathic impulse is perceptible, should radiate from living human organisms. I see no reason to assume that the varied and concordant statements made by patients in the _Zoist_ and early mesmeric works merely reflect subjective fancies. I have myself performed and witnessed experiments on intelligent persons expressly designed to test whether or no the sensation following the hand was a mere fancy. It seems to me hardly likely that persons who have never experienced other purely subjective sensations, and who are expressly alive to the question here at issue, should nevertheless again and again feel the classical tingling, etc., along the track of the hypnotiser's passes without any real external cause. To assume that all which they feel is a mere result of suggestion, may be a premature attempt at simplifying modes of supernormal communication which, in fact, are probably not simpler but more complex than any idea which we have as yet formed of them. And here at last we arrive at what is in reality the most interesting group of inquiries connected with the hypnotic trance. We have just seen that the subliminal state of the hypnotised subject may be approached by ways subtler than mere verbal suggestion--by telepathic impacts and perhaps by some effluence of kindred supernormal type. We have now to trace the supernormal elements in the hypnotic _response_. Whether those elements are most readily excited by a directly subliminal appeal, or whether they depend mainly on the special powers innate in the hypnotised person, we can as yet but imperfectly guess. We can be pretty sure, at any rate, that they are not often evoked in answer to any rapid and, so to say, perfunctory hypnotic suggestion; they do not spring up in miscellaneous hospital practice; they need an education and a development which is hardly bestowed on one hypnotised subject in a hundred. The first stage of this response lies in a subliminal relation established between the subject and his hypnotiser, and manifesting itself in what is called _rapport_, or in _community of sensation_. The earlier stages of _rapport_--conditions when the subject apparently bears or feels the hypnotiser only, and so forth--arise probably from mere self-suggestion or from the suggestions of the operator, causing the conscious attention of the subject to be exclusively directed to him. Indications of the possible development of a real link between the two persons may rather be found in the cases where there is provable community of sensation,--the hypnotised subject tasting or feeling what the hypnotiser (unknown to the subject) does actually at that moment taste or feel.