In the meantime the reader who has persevered so far is apt to go no further. The prejudice against 'wraiths' and 'ghosts' is very strong; but, then, our innocent phantasms are neither (as we understand their nature) ghosts nor wraiths. Kant broke the edges of his metaphysical tools against, not these phantasms, but the logically inconceivable entities which were at once material and non-material, at once 'spiritual' and 'space-filling.' There is no such difficulty about hallucinations, which, whatever else may be said about them, are familiar facts of experience. The only real objections are the statements that hallucinations are always morbid (which is no longer the universal belief of physiologists and psychologists), and that the alleged coincidences of a phantasm of a person with the unknown death of that person at a distance are 'pure flukes.' That is the question to which we recur later.
In the meantime, the defenders of the theory, that there is some not understood connection of cause and effect between the death or other crisis at one end and the perception representing the person affected by the crisis at the other end, point out that such hallucinations, or other effects on the percipient, exist in a regular rising scale of potency and perceptibility. Suppose that 'A's' death in Yorkshire is to affect the consciousness of 'B' in Surrey before he knows anything about the fact (suppose it for the sake of argument), then the effect may take place (1) on 'B's' emotions, producing a vague malaise and gloom; (2) on his motor nerves, urging him to some act; (3) or may translate itself into his senses, as a touch felt, a voice heard, a figure seen; or (4) may render itself as a phrase or an idea.
Of these, (1) the emotional effect is, of course, the vaguest. We may all have had a sudden fit of gloom which we could not explain. People rarely act on such impressions, and, when they do, are often wrong. Thus a friend of my own was suddenly so overwhelmed, at golf, with inexplicable misery (though winning his match) that he apologised to his opponent and walked home from the ninth hole. Nothing was wrong at home. Probably some real ground of apprehension had obscurely occurred to his mind and expressed itself in his emotion.
But one may illustrate what did look like a coincidence by the experience of the same friend. He inhabited, as a young married man, a flat in a house belonging to an acquaintance. The hall was covered by a kind of glass roof, over part of its extent. He was staying in the country with his wife, and as they travelled home the lady was beset with an irresistible conviction that something terrible had occurred, not to her children. On reaching their house they found that one of their maids had fallen through the glass roof and killed herself. They also learned that the girl's sister had arrived at the house, immediately after the accident, explaining that she was driven to come by a sense that something dreadful had happened. The lawyer, too, who represented the owner of the house, had appeared, unsummoned, from a conviction, which he could not resist, that for some reason unknown he was wanted there.[1] Here, then, was not an hallucination, but an emotional effect simultaneously reaching the consciousness of three persons, and coinciding with an unknown crisis.[2]
Cases in which a person feels urged to an act (2) are also recorded. Indeed, the lawyer's in our anecdote is such an instance. Not to trouble ourselves (3) with 'voices,' hallucinations of sight, coinciding with a distant unknown crisis, are traced from a mere feeling that somebody is in the room, followed by a mental, or mind's eye picture of a person dying at a distance, up to a kind of 'vision' of a person or scene, and so on to hallucinations appealing, at once, to touch, sight, and hearing. As some hundreds of these narratives of coincidental hallucinations in every degree have been collected from witnesses at first hand, often personally known, and usually personally cross-questioned, by the student, it is difficult to deny that there is a prima facie case for inquiry.[3]
There is here no question of 'spirits,' with all their physical and metaphysical difficulties. Nor is there any desire to shirk the fact that many 'presentiments' and hallucinations of the sane coincide with no ascertainable fact. We only provisionally posit the possibility of an influence, in its nature unknown, of one mind on another at a distance, such influence translating itself into an hallucination. An inquiry into this subject, in the ethnographic and modern fields, may be new but involves no 'superstition.'
We now return to Mr. Tylor, who treats of hallucinations among other experiences which led early savage thinkers to believe in ghosts or separable souls, the origin of religion.
As to the causes of hallucinations in general, Mr. Tylor has something to say, but it is nothing systematic. 'Sickness, exhaustion, and excitement' cause savages to behold 'human spectres,' in 'the objective reality' of which they believe. But if an educated modern, not sick, nor exhausted, nor excited, has an hallucination of a friend's presence, he, too, believes that it is 'objective,' is his friend in flesh and blood, till he finds out his mistake, by examination or reflection. As Professor William James remarks, in his 'Principles of Psychology,' such solitary hallucinations of the sane and healthy, once in a life-time, are difficult to account for, and are by no means rare. 'Sometimes,' Mr. Tylor observes, 'the phantom has the characteristic quality of not being visible to all of an assembled company,' and he adds 'to assert or imply that they are visible sometimes, and to some persons, but not always, or to everyone, is to lay down an explanation of facts which is not, indeed, our usual modern explanation, but which is a perfectly rational and intelligible product of early science.'
It is, indeed, nor has later science produced any rational and intelligible explanation of collective hallucinations, shared by several persons at once, and perhaps not perceived by others who are present. Mr. Tylor, it is true, asserts that 'in civilised countries a rumour of some one having seen a phantom is enough to bring a sight of it to others whose minds are in a properly receptive state.' But this is arguing in a circle; What is 'a properly receptive state'? If illness, overwork, 'expectant attention,' make 'a properly receptive state,' I should have seen several phantoms in several 'haunted houses.' But the only thing of the sort I ever saw occurred when I was thinking of nothing less, when I was in good health, and when I did not know (nor did I learn till long after) that it was the right and usual phantom to see. Mr. Podmore remarks that various members of the Psychical Society have sojourned in various 'haunted houses,' 'some of them in a state of expectancy and nervous excitement,' which never caused them to see phantoms, for they saw none.[4]
Mr. Tylor treats of waking hallucinations in much the same manner as he deals with 'travelling clairvoyance.' He does not study them 'in the field of experience.' He is not concerned with the truth of the facts, important as we think it would be, but with his theory that hallucinations, among other causes, would naturally give rise to the belief in spirits, and thus to the early philosophy of Animism. Now, certainly, the hallucination of a person's presence, say at the moment of his death at a distance, would suggest to a savage that something of the dying man's, something symbolised in the word 'shadow,' or 'breath' (spiritus), had come to say farewell. The modern 'spiritualistic' theory, again, that the dead man's 'spirit' is actually present to the percipient, in space, corresponds to, and is derived from, the animistic philosophy of the savage. But we may believe in such 'death-wraiths,' or hallucinatory appearances of the dying, without being either savages or spiritualists. We may believe without pretending to explain, or we may advance the theory of 'Telepathy,' Hegel's 'magical tie,' according to which the distant mind somehow impresses itself, in a more or less perfect hallucination, on the mind of the person who perceives the wraith. If this be so, or even if no explanation be offered, the truth of the stories of coincidental apparitions becomes important, as pointing to a new region of psychical inquiry. Then the evidence of savages as to hallucinations of their own, coincident with the death of their absent friends, will confirm, quantum valeat, the evidence of many modern observers in all ranks of life, and all degrees of culture, from Lord Brougham to an old nurse.[5]