chapter ii and elsewhere throughout our study, and designated as the x-

or unknown quantity of the Fairy-Faith, cannot at the present time be satisfactorily explained by science: (1) Collective hallucinations and veridical hallucinations; (2) objects moving without contact; (3) raps and noises called 'supernatural'; (4) telepathy; (5) seership and visions; (6) dream and trance states manifesting supernormal knowledge; (7) 'mediumship' or 'spirit-possession'. Independently of our own Celtic data in their support, the first class of phenomena are supported by an enormous mass of good data scientifically collected; the second and third class are less well supported; telepathy is almost generally accepted as now being established; the last three classes are hypothetically accepted by many authorities in pathology, psychology, and psychical research.

SCIENTIFIC ATTITUDES TOWARDS THE ANIMISTIC HYPOTHESIS

Assertions similar to ours, that phenomena like these are incapable of being explained away by any known laws of orthodox science, have helped to bring about a marked division in the ranks of scientific workers. On one hand there are those scientists who deny the existence of anything not capable of being mathematically tested, weighed, dissected, or otherwise analysed in laboratories; on the other hand, there are their colleagues who, often in spite of previous bias toward materialism, have arrived at a personal conviction that an animistic view of man is more in harmony with their scientific experience than any other. Both schools include men eminent in all branches of biological sciences.

Midway between these contending schools are the psycho-physicists who maintain that man is a twofold being composed of a psychical and physical part. Some of them are inclined to favour animism, others are unwilling to regard the psychical part of man as separable from the physical part. So the world of science is divided.

Under such chaotic conditions of science it is our right to accept one view or another, or to reject all views and use scientific data independently. There can be no final court of appeal in matters where opinion is thus divided, save the experience of coming generations. We are therefore content to state our own position and leave it to the future for rejection or acceptance, as the case may be. To attempt a critical examination of the thousand and one theories occupying the modern arena of scientific controversy about the essential nature of man is altogether beyond the scope of this work. We must, nevertheless, blaze a rough footpath through the jungle of scientific theories, and, at the outset, put on record our opposition to that school of scientific workers who deny to man a supersensuous constitution. Their theory, if carried out to its logical conclusion, is now essentially no different from Feuerbach's theory at a time when science was far less developed than it is to-day. He held that 'the object of sense, or the sensuous, alone is really true, and therefore truth, reality, and the sensible are one'.[567] To say that we know reality through sensual perception is an error, as all schools of scientists must nowadays admit. Nature is for ever illuding the senses; she masquerades in disguise until science tears away her mask. We must always adjust the senses to the world itself: where there are only vibrations in ether, man sees light; and in atmospheric vibrations he hears sound. We only know things through the way in which our senses react upon them. We sum up the world-problem by saying: 'consciousness does not exhaust its object, the world.'[567] Perceptibility and reality thus not being coincident, man and the universe remain an unsolved problem, despite the noisy shoutings of the materialist in his hermetically sealed and light-excluding case called sensual perceptions. Science admits that all her explanations of the universe are mere products of human understanding and perceptions by the physical senses: the universe of science is wholly a universe of phenomena, and behind phenomena, as no scientist would dare deny, there must be the noumena, the ultimate causes of all things, as to which science as yet offers no comprehensive hypothesis, much less an answer. To consider the materialistic hypothesis as adequate to account for the residuum or x-quantity of the Fairy-Faith would not even be reasonable, and, incontestably, would not be scientific.

When scientists holding to the non-animistic view of life are driven from their now for the most part abandoned fortress built by German scientists of the last century, of whom Feuerbach was a type, they, in opposing the animists, occupy a more modernly equipped fortress called the Pathological Theory. This theory is that 'mediumship', telepathy, hallucinations, or the voluntary and involuntary exercise of any so-called 'psychical' faculties on the part of men and women, with the resulting phenomena, can be explained as due to abnormal and hence--according to its point of view--diseased states of the human organism, or to some derangement of bodily functions, leading to delusions resembling those of insanity, which by a sort of hypnosis telepathically induced may even affect researchers and lead them into erroneous conclusions. All scientists are in agreement with the Pathological Theory in so far as it rejects as unworthy of serious consideration all apparitions and abnormal phenomena save those observed by sane and healthy percipients under ordinary conditions. And, accordingly, whenever there can be shown in our percipients a diseased mental or psychical state, we must eliminate their testimony without argument. But since we have endeavoured to present no testimony from Celtic percipients who are not physically and psychically normal, the Pathological Theory at best can affect the x-quantity merely hypothetically.

The following admission in regard to visual and auditory hallucinations is here worth noting as coming from so thorough an exponent of materialistic psychology as M. Théodule Ribot:--'There must exist anatomical and physiological causes which would solve the problem, but unfortunately they are hidden from us.' Of these hidden causes, which he thinks create all psychical states of mind or consciousness called by him 'disease of personality', M. Ribot says:--'Our ignorance of the causes stops us short. The psychologist is here like the physician who has to deal with a disease in which he can make out only the symptoms. What physiological influences are they which thus alter the general tone of the organism, consequently of the coenaesthesis, consequently too of the memory? Is it some condition of the vascular system? Or some inhibitory action, some arrest of function? We cannot say.'[568] And after six years of most careful experimentation, M. Charles Richet, Professor of Physiology in the Faculty of Medicine in Paris, reached this conclusion:--'There exists in certain persons at certain moments a faculty of acquiring knowledge which has no _rapport_ with our normal faculties of that kind.'[569] We seem to have here the last words of science touching the Pathological Theory.

When driven from their pathological stronghold, and they maintain that they have not been driven from it, the non-animists always find a safe way to cover their retreat by setting up the charge that all psychical phenomena are fraudulent or else due to delusion on the part of observers. In reply, psychical researchers readily admit that there is a large percentage of mere trickery, delusion, and imposture in observed 'spirit' phenomena; some of which is deliberate on the part of the 'medium' and some of which is apparently not consciously induced. Nevertheless, such investigators are not at all willing to say that there is nothing more than this. The Delusion and Imposture Theory will account for a very respectable proportion of these phenomena, but not for all of them, and theoretically we shall admit its application to the parallel phenomena attributed to fairies; though it must be acknowledged that 'fairy' phenomena are for the most part spontaneously exhibited rather than as in 'Spiritualism' set up through holding _séances_. Further, there are comparatively few 'charmers' or 'wise men'--the fairy 'mediums' among the Celts--who ever make money out of their ability to deal with the 'good people', or _Tylwyth Teg_; whence the margin of encouragement for fraudulent production of 'fairy' phenomena is extremely limited when compared with 'Spiritualism'.

After twenty-five years of experimentation, more or less continuous, with 'mediums', during which every conceivable test for the detection of fraud on their part was applied, William James put his conclusions on record in these words:--'When imposture has been checked off as far as possible, when chance coincidence has been allowed for, when opportunities for normal knowledge on the part of the subject have been noted, and skill in "fishing" and following clues unwittingly furnished by the voice or face of bystanders have been counted in, those who have the fullest acquaintance with the phenomena admit that in good mediums _there is a residuum of knowledge displayed_ [italics are James's own] that can only be called supernormal: the medium taps some source of information not open to ordinary people.'[570] Mr. Andrew Lang, one of the bravest of psychical researchers in England, not only would agree with William James in this, but, having carefully examined the Delusion and Imposture Theory from the more commanding point of view of an anthropologist, would go further and include classical spiritualistic phenomena as well as those existing among contemporary uncultured races. He says:--'Meanwhile, the extraordinary similarity of savage and classical spiritualistic rites, with the corresponding similarity of alleged modern phenomena, raises problems which it is more easy to state than to solve. For example, such occurrences as "rappings", as the movement of untouched objects, as the lights of the _séance_ room, are all easily feigned. But that ignorant modern knaves should feign precisely the same raps, lights, and movements as the most remote and unsophisticated barbarians, and as the educated Platonists of the fourth century after Christ, and that many of the other phenomena should be identical in each case, is certainly noteworthy.'[571] Evidently, then, there is a large proportion of psychical and 'fairy' phenomena which remain unexplained even after the Delusion and Imposture Theory has been applied to such phenomena, and in all such cases we must look further for a scientific explanation.

PROBLEMS OF CONSCIOUSNESS

Our chief investigations will at first be directed more especially to the problems common both to psychology and to psychical research, namely, dream and trance states, hallucinations, and possessions, in order to show what bearings, if any, they have in the eyes of science upon parallel phenomena said to be due to fairies, and set forth in