The division of the sciences reflects the diversity of human interests; it represents the economical adaptation of organized thought to the conditions of reality; and it likewise recognizes the intrinsically and objectively distinct realms and aspects, in which and under which phenomena occur. It is obvious that the sciences were shaped by human needs; that physics and chemistry and geology and biology and psychology do not constitute independent departments of nature's rÉgime, but only so many aspects of complex natural activities; that a cross-section of the composite happenings of a cosmic moment would reveal an endlessly heterogeneous concomitance of diverse forms of energy acting upon diverse types of material; that, as we confine our attention somewhat arbitrarily to one or another component of the aggregate, we become physicists, or chemists, or geologists, or biologists, or psychologists; that, indeed, Nature is all things to all men. There is, furthermore, a community of spirit between the several sciences, as there is a logical unity of method and purpose within the realm of each. However ignorant they may be of one another's facts, the chemist and the psychologist readily appreciate one another's purposes, and find a bond of sympathy in the pursuit of a commonly inspired though differently applied method. The search for objective truth, the extension of the realm of law and regularity, the expansion and organization of the army of facts constantly marshaled and reviewed and made ready for service, the ever widening development of principles and the furthering of a deeper insight into their significance,—these are ideals for the advancement of science, far easier of expression than of execution, but the clear and accepted formulation of which itself attests a highly developed stage of accurate thought. A clear-cut conception of the purposes and methods of scientific investigation and of the scope of the several sciences is a dearly bought product of generations of well-directed, as also of misdirected, effort. The path of progress leading to this achievement has been tortuous and indirect; there has been much expenditure of energy that resulted merely in marking time, in going through the movements of locomotion but with no advance, in following a false trail, or, through a loss of the sense of direction, in coming back after a circuitous march to an earlier starting-point. It is easy, when a certain height is reached, to look down and back, and see how much more readily the ascent might have been accomplished; but it is a very different matter to form a successful plan for attaining the next higher commanding point. It is inevitable that there shall be differences of opinion as to course and manoeuvre, and errors of judgment of commission and omission; but such diversity is quite consistent with an underlying coÖperation and singleness of purpose. It is in the inspiration and in the execution of that purpose that science becomes differentiated from the unscientific and non-scientific.

Between the organized effort and well-recognized plan of action of science and the chaotic movements of the untutored mind, there is a marked contrast. The savage, like the child, constantly meets with the unexpected; every experience lying outside his narrow beaten track stirs him with a shock and often fills him with fear—the handmaid of ignorance. He is apt to picture nature as a fearful monster, and to people the world with tyrannical beings. Step by step the region of the known expands, and suggests the nature of the unknown; men expect, they foresee, they predict. The apparent chaos of mutually inimical forces gives way to the profound harmony of unifying law. And yet the unknown and the borderland that separates it from the known are always near by, to tempt curiosity and the spirit of adventure.

The problem here to be considered relates to the attitude which may most properly and profitably be taken with regard to the outlying phenomena of the mind. Are they outcasts, to be treated in a spirit of charity and forbearance? Are they the true owners of the land, driven off, like the Indian before the white man, by the relentless march of civilization to a prescribed reservation? Are they the unjustly deposed and rightful heirs, soon to be restored to their kingdom by a fairer and more searching examination of their title? Or are they, gypsy-like, of obscure origin, surviving in a civilization which they are in but not of, attempting to eke out an uncertain existence by peddling relics of antiquated lore to the curious and the credulous?

II

The current usage of the term "Psychical Research" takes its meaning from the Society for Psychical Research, founded in England in 1882. The original programme of the society involved a systematic investigation of "that large group of debatable phenomena designated by such terms as mesmeric, psychical, and Spiritualistic." "From the recorded testimony of many competent witnesses," it is urged, "there appears to be, amidst much delusion and deception, an important body of remarkable phenomena, which are prima facie inexplicable on any generally recognized hypothesis, and which, if incontestably established, would be of the highest possible value." The work of investigation of these "residual phenomena" was intrusted to six committees, who were to inquire severally into "the nature and extent of any influence which may be exerted by one mind upon another, apart from any generally recognized mode of perception;" into hypnotism, the so-called mesmeric trance, clairvoyance, and other allied phenomena; to undertake a revision of Reichenbach's researches with reference to discovering whether his "sensitives" possessed "any power of perception beyond a highly exalted sensibility of the recognized sensory organs;" to investigate the reports of apparitions at the moment of death, and of houses reputed to be haunted; to inquire into the causes and general laws of the phenomena of Spiritualism; and to collect material relative to the history of these subjects. It is the investigation of these topics from the point of view prevalent in the publications of this Society that constitutes the definition of Psychical Research. This phrase, which has come into prominence within less than a score of years, has no simple or familiar synonym; it must not be interpreted by the combined connotation of its component words, but must be accepted as the technical equivalent of the trend and content of a certain type of investigation of obscure phenomena or alleged phenomena, in most of which psychological factors are prominent.

If the term may at all be brought within the circle of the sciences, it certainly there assumes a somewhat unique position. It naturally becomes the analogue, or it may be the rival of Psychology; yet its precise status and its logical relations to other departments of scientific research are far from obvious. The modern conception of Psychology is generously comprehensive; it encompasses the endlessly variable and complex processes of human mentality; it pursues with enthusiasm the study of developmental processes of intelligence in childhood, in the animal world, in the unfoldment of the race; it studies, for their own value, the aberrant and pathological forms of mental action, and brings these into relation with, and thus illuminates the comprehension of the normal. It forms affiliations with physiology and biology and medicine, with philosophy and logic and ethics, with anthropology and sociology and folk-lore; it borrows freely from their materials, and attempts to interpret the materials thus borrowed from the psychological point of view and to infuse into them its distinctive spirit. Surely Psychical Research should be able to find a nook in so commodious a home; if the problems of Psychical Research are legitimate members of the psychological family, some provision should be possible for their reception within the old homestead. Nor does this group of problems represent a difference of school, in some such way as the homoeopathists represent a secession from the regular school of medicine; nor can it be regarded as the special study of the unusual and the abnormal in the sphere of mind, and thus stand in the relation which teratology or pathology bears to physiology and anatomy: for in that event it would constitute a simple division of Abnormal Psychology, and although Psychical Research has close alliance with the latter, it cannot be, and is unwilling to be regarded as a subordinate portion of that domain.

From a survey of the literature of Psychical Research one might readily draw the inference that whereas Psychology studies the recognized and explicable phases of mental phenomena, Psychical Research is occupied with the disputed and mysterious. One might also conclude that whereas Psychology is concerned with the phenomena commonly associated with mental activities and their variation under normal as also under unusual and pathological circumstances, Psychical Research is interested in the demonstration of supernormal faculties, and in the establishment of forms of mentality that diverge from and transcend those with which every-day humanity is permitted to become familiar; and that, moreover, in some of its excursions Psychical Research does not limit itself to mental manifestations, but investigates undiscovered forms of physical energy, and seriously considers whether behind and beyond the world of phenomena there is another and a different world, in which the established order and the mental and material laws of this planet do not obtain. But the unwarranted character, not to say absurdity, of such a differentiation or classification is at once apparent, if we attempt to carry it over into other departments of science. Speculations in regard to the constitution of the earth's centre or as to the future of our planet, if legitimate in character, are as readily incorporable into geology as the consideration of more definite and better known phenomena; biologists recognize that there are mythical as well as anomalous portions of their domain, but do not consider that freaks of nature either destroy the validity of anatomical and physiological principles, or demand a totally distinct and transcendent organization or method for their study. The chemist may become interested in the examination of what was really done when it was supposed that other metals were converted into gold; the physicist may become interested in the applications of electricity and magnetism, of optical reflections and images in the production of stage illusions; but the conception of chemistry and of physics naturally embraces considerations of the growth, the errors, and the applications of these sciences. And while these comparisons do not furnish a complete parallel to the relation that seems to pertain between Psychology and Psychical Research, yet it is as true in the one case as in the others, that the differentiation of a group of problems on the basis of unusualness of occurrence, of mysteriousness of origin, of doubtful authenticity, or of apparent paradoxical or transcendent character, is as illogical as it is unnecessary. The legitimate problems of Psychical Research are equally and necessarily genuine problems of Psychology, that require no special designation. They need not be especially important, nor interesting, nor profitable, nor well comprehended problems of Psychology, but they belong there if they are scientific problems at all. The objection to Psychical Research is not a verbal one; it is an objection to the separation of a class of problems from their natural habitat, an objection to the violent transplanting of a growth from its own environment. It is a protest against the notion that while the psychologist may be listened to with respect and authority in one portion of his topic, the layman and the member of the Society for Psychical Research are equally or more competent to pronounce judgments in a closely allied field. It is a protest against the view that for the comprehension of such processes as sensation and perception a course in Psychology may be useful, but that telepathy may be established by any moderately intelligent but not specially informed percipient and agent; or that the study of hallucinations is indeed a complex and difficult subject, but haunted houses, and phantasms of the living, offer a proper occupation for a leisure hour. All this is wrong and absurd; and yet it is hardly an exaggeration to declare that a majority of those who profess a deep interest in, and express an opinion about the one group of topics, would be surprised to have demanded of them a familiarity with the data of Psychology as a prerequisite to an intelligent coÖperation in Psychical Research. If the problems of Psychical Research, or that portion of the problems in which investigation seems profitable, are ever to be illuminated and exhibited in an intelligible form, it will only come about when they are investigated by the same methods and in the same spirit as are other psychological problems, when they are studied in connection with and as a part of other general problems of normal and abnormal Psychology. Whether this is done under the auspices of a society or in the psychological laboratories of universities is, of course, a detail of no importance. It is important, however, what the trend, and the spirit, and the method, and the purpose of the investigation may be; as it is equally important, what may be the training, and the capabilities, and the resources, and the originality, and the scholarship of the investigators.

Is the "psychical researcher" then merely a psychologist gone astray? Is he a mere dilettante, an amateur collector of curious specimens, or is he something very different from a psychologist? He is doubtless one or the other or all of these. He may be a psychologist in the truest and best sense of the word; and as all psychologists have their special interests, so his may be centred in the group of phenomena which have been unwisely separated from their milieu, and have been inaptly termed "Psychical Research." I am ready not only to admit but to emphasize that a considerable portion of the influential contributors to Psychical Research are animated by as truly scientific motives, and carry on their work with as much devotion and ability, with as careful a logical acumen, with as shrewd comprehension of the dangers and difficulties of their topic, as characterize the labors of any other field of psychological endeavor. But this statement can by no means be extended to all; nor does it at all militate against the opinion that many of those to whom it does apply, subscribe to illogical and pernicious conclusions, and indirectly encourage a most unfortunate attitude in others.

III

Approaching the matter next from a descriptive point of view, it becomes pertinent to inquire what are the actual interests which give vitality to Psychical Research, which support the investigator in his laborious and tedious collection and compilation of cases, which provide the membership for the Society for Psychical Research, and the still wider circle of interested readers, which induce so many correspondents to record long and painstaking accounts of their peculiar "psychical" experiences, which make the discussion of these matters a favorite topic of conversation. That these interests are diverse is obvious; yet they fall naturally into a few groups or types, of which the occult interest is probably the most widespread. This, in its pronounced form, proceeds upon a suppressed or acknowledged conviction that the world which science reveals is but a torso of reality; that its very head—that which gives significance and expression to the whole—may be missing, and can only be restored from isolated fragments, themselves to be found by rare good fortune. The key to the riddle of existence is to be sought in the personal significance of events; in moments of great stress and strain, in critical emergencies when communication between individuals deeply concerned must be established though the heavens fall, it is claimed that the heavens do occasionally fall, that the laws of earth are transcended, and the phantasms of the dying are telepathically wafted to the sentient consciousness of the interested kinsman or friend. Apparitions and presentiments are interpreted as mystic symbols of the order of events, which cast their shadows before or coincidently with them. The intelligence of the departed, likewise, is discerned in these manifestations; and through haunted houses and sÉance chambers, through the inspired utterances of entranced mediums, messages are revealed that indicate conclusively the impossibility of their transmission through ordinary channels, or, it may be, their unmistakable "spiritual" origin. The supernormal, transcendent, undiscovered world of the occult shines through, though fitfully and visible only to those who have eyes to see, the commonplace, constrained phenomena of earth-bound reality. Variable as may be the formulation and trend of this interest, yet in some form this suspicion or quasi-belief (for which the term "occult" seems appropriate) that there are things undreamt of in our philosophy, that these residual phenomena are profoundly significant and afford a glimpse of the great unknown, as well as of the fallibility and the poverty of scientific conceptions, furnishes a very considerable clientÈle of Psychical Research. The why and wherefore of this inclination need not here be discussed; its prevalence is unmistakable. And though it appears now in a crude and superstitious guise, and again in a more refined and critical attitude, and more rarely is unwillingly assumed as the only possible alternative in the face of striking personal and other evidence, yet there is a sufficient community of belief in these several positions to warrant their inclusion in a common though variable type. As applied to Psychical Research, it is important neither to generalize from the worst nor from the best expressions of this occult interest, but to appreciate its range of distribution amid the diversity of temperament and endowment.

As the occult interest recedes to an obscure position in the background, and as the foreground and middle distance come to be suffused with the light of critical discernment and of the scientific spirit of inquiry, the "psychical researcher" approximates to the psychological point of view. This essentially psychological interest is necessarily a strong one in some of the distinctive problems of Psychical Research, and often mingles with other interests to form a curious composite. It may be a morbid, an uninformed, a misguided, a dilettante interest, but its psychological character may be noted without implication of any further comment of approval or disapproval. Favorably interpreted, this psychological interest is an interest in the intrinsic nature and analysis of mental processes,—an interest in tracing the various threads that compose the twisted strands of consciousness, in following the kaleidoscopic transformations wrought by attention and association, in observing the play of habit, the subtle processes of illusion and misinterpretation, the unexpected intrusion of the subconscious, and likewise in the pursuit of these as exemplified in concrete instances; among others, in such alleged phenomena as are commonly described as "mesmeric, psychical, and Spiritualistic."

While this interest may be combined with the occult interest, the two are not really congenial and are in essence antagonistic. We are all rational only in spots; and many a "psychical researcher" pursues some of his investigations under the guidance of a scientifically psychological interest, while in other directions the occult interest takes the helm. The analysis of the contrast between the two may be helpful in realizing more fully the divergences of Psychology and Psychical Research. The "psychical researcher" wishes to prove or to disprove something; with regard to this or that phenomenon he wishes to know "what there is in it," and is accordingly attracted to phenomena which seem to have something mysterious in them. As soon as he succeeds in finding a consistent and commonplace explanation for a group of phenomena, his main curiosity is satisfied, and he takes to pastures new. When once he has shown that theosophic marvels are the result of trickery and collusion, then the physical appearances of Theosophy have been explained. It has been demonstrated that there is "nothing in them," that is, nothing transcendental. The verdict is given, and the court passes on to the next case. But the psychologist's interest in how Mme. Blavatsky performed her astral manifestations was always a very subordinate and incidental one; the logical scientist, whether he happened to be physicist or biologist or psychologist, was quite convinced that Mme. Blavatsky had not discovered the means of carrying ponderables by unseen agencies from "China to Peru" (which, by the way, would, if possible, be a matter for the physicist and not at all for the psychologist to investigate), any more than she had been able to discover the secret of immortality (which would in turn be a biological discovery), or had been able to leave her body in New York, while her "astral" soul inspected what was going on in India (which might indeed be regarded as a psychological feat). The psychological problem of Theosophy, so far as there is one, is of a different type; it takes up the inquiry as to how such marvelous pretensions come to be believed, by what influences conviction is formed and doctrines spread. It contributes an incident or an apt illustration to the psychology of belief, or to the social psychology of contagion. The psychologist is interested in the illustration which such a movement affords of the action of certain mental processes and influences; and his interest persists, whether there is presumably "something in it," or not. The resulting difference in attitude between the psychologist and the "psychical researcher" is indeed fundamental, and even more so in principle than in practical issue.

It is desirable but not easy to find parallel illustrations of this difference in attitude in other than psychological discussions; but perhaps the following may be pertinent. If the widespread interest in the North Pole were merely that in the possibility of its furnishing the key to the mystery of the northward-turning magnet, and were at once to disappear upon the removal of the mystery, such an interest would be quite parallel to that of the "psychic researcher;" but the interest of the true physicist in any physical phenomenon which in the future may be demonstrated to exist at the North Pole would be a persistent one, and one depending for its value on the illustration thus revealed, not of mystery but of recognized physical principles. Furthermore, be it observed that however valuable may be the physical facts obtainable by a polar expedition, there is no overwhelming obligation resting upon every physicist to desert his laboratory and embark for the farthest north; but that such expeditions are decided by considerations of general interest, expediency, and importance. There is no obligation resting upon the physicist any more than upon the psychologist to make large sacrifices for the pursuit of ill-defined residual phenomena, and certainly not for the refutal of far-fetched theories and suggested supernatural notions. Physicist and psychologist alike contribute most to the advancement of their science by an open-minded but systematic pursuit of definite, significant, and logically fashioned problems.

Let it not be inferred from the emphasis placed upon this contrast that Psychical Research is in itself to be condemned or to be regarded as useless. Not at all; only in many aspects it is not psychological, and the psychologist is under no obligation to find an interest in, nor to occupy himself with, this aspect of things, if his general trend does not happen to point that way. The physicist may be called upon with equal propriety to aid in many inquiries which the Society for Psychical Research has undertaken. Among the early records of the Society appears an account of a man who presented himself with an iron ring on his arm, far too small to have been slipped over his hand, and who seemed to imply that possibly the spirits put it there, or that it came on through some supernatural agency. This was regarded as a proper case for the Society for Psychical Research to examine. If it could have been demonstrated that the ring reached its position through the exercise of the will of some living persons or spirits, the phenomenon, I suppose, would in some sense be psychological; if it were demonstrated that it came transported through the fourth dimension of space, it might be termed physical. But in reality it was probably physiological, for there was evidence that it was by the effects of etherization that the hand was contracted and that the ring was forced over it. Surely it is most absurd to designate such an inquiry, however interesting and proper it may be regarded, Psychical Research. It certainly is a highly commendable function for a society to take upon itself the investigation of such claims as theosophy or spiritualism put forward, whenever movements of this type are likely to develop into psychic epidemics or to prove a social menace. Any authoritative body that will exhibit the absurdity of such claims, and expose the true modus operandi of the manifestations, will perform an important civic function. Such a function was performed by the Royal Commission of 1784, in exposing the vain pretensions and the insidious dangers of animal magnetism; Mr. Hodgson's investigations of theosophy, the Seybert Commission's report on spiritualism, are both able and useful contributions of the same type; and, at present, an authoritative statement regarding the theoretical absurdity and the practical dangers of Christian Science might prove efficacious. Such special investigations represent the practical application of science to concrete conditions and problems; they are woefully misnamed, and their significance is likely to be misinterpreted, when they are presented as Psychical Research, and are grouped along with other problems of a totally different nature.

I shall next touch briefly upon other diverse yet allied interests in Psychical Research, which may serve to illustrate further the various avenues of approach to this heterogeneous group of problems. I shall speak of these as the explanatory, the investigative, and the anthropological interests. The first is satisfied with finding out how alleged marvels are really performed; it takes up the physical phenomena of spiritualism or theosophy; it investigates conjuring tricks; it discovers the origin of noises in haunted houses; it ferrets out the means whereby mediums obtain knowledge of their sitters' private affairs. This is proper work for experts in prestidigitation and for detectives,—not for all such, for to be successful, the conjurer and the detective must have special knowledge and fitness for this branch of the trade. While the facts thus gathered may be useful as illustrative material to the psychologist, they form no essential part of his profession; nor is there any special reason why he should be best suited to determine the technical modus operandi of such manifestations. That some psychologists with a strong interest in this type of phenomena might properly coÖperate in such an investigation, if they chose, is too obvious to merit remark; but to trace out and expose trickery cannot be imposed upon the burdensome duties of the psychologist.

With a certain type of "psychical researcher" this explanatory interest is the dominant one; and by dispelling error and replacing false notions by true ones he may perform a useful service to the community. The explanatory interest is quite certain to be supplemented by the investigative, and that because the latter soon becomes necessary to the former. While the one is concerned with the explanation and description of the actual marvels accomplished, the other must consider also what is reported and what is believed to have been accomplished. The mechanism of a trick, whether brought forward as evidence of spiritualism or not, when clearly exhibited, explains the trick; a loose board under the roof, or the reflection from a lustrous surface, may at once reveal how mysterious noises and lights were really produced. But one must go farther to account for the recognition of relatives in the form of the medium covered with flimsy drapery, for the automatic spelling out of messages, or for the successes of guessing experiments. These two interests thus proceed hand in hand and furnish valuable material which the psychologist is ready to interpret and to utilize; for the study of how false beliefs spread, of how deception proceeds, teems with points of psychological significance. This, however, is by no means a unique characteristic of Psychical Research; there are also interesting psychological points in such diverse occupations as the actor's profession, in juggling and tricks of skill, in advertising, in religions revivals, etc. It is highly desirable that the materials thus gathered should be psychologically utilized, and it is equally desirable that such material should be collected. Many valuable studies in Psychical Research, which owe their origin not to a truly psychological interest but to this general explanatory and investigative interest, have incidentally brought to light material of great suggestiveness for the psychologist, and material which quite possibly would not otherwise have been discovered. I am more than willing to contribute whatever I can to the maintenance of a CoÖperative Psychological Investigation Society which shall stand ready to take up the investigation of any phenomena which promise to yield data of psychological interest; which shall, however, keep far removed from any phase of the transcendental or the occult; which shall not feel itself under any obligation to disprove any improbable or absurd hypothesis which this or that seeker for notoriety may choose to put forward; which shall not be dominated merely by the spirit of finding out whether there is "anything in" one movement or another, but will simply stand ready to supplement the work of the academic laboratories by undertaking, in the same spirit, a special form of investigation, which, under existing circumstances, such laboratories or their individual directors cannot expediently undertake.

The anthropological interest, above referred to, is to my mind a most valid one, and is best represented in Mr. Andrew Lang's volume, "Cock Lane and Common Sense." Mr. Lang there examines the stories of ghosts and apparitions, and clairvoyance, and spiritual knocks and raps, and strange influences, and haunted places, not at all for determining how little or how much these things are true, but how they come to be believed in. How is it that the same tale is told, the same powers credited, the same manifestations produced, in evidence of the supernatural? In savage as well as in ancient magic, in the stories current in former centuries as well as in our own day and generation, there is a pronounced generic similarity. There is certainly as strong an interest in the investigation of the growth and distribution of these beliefs as of the other clusters of belief which anthropology and folk-lore consider. And, moreover, recently acquired knowledge of hypnotic and automatic phenomena, of hyperÆsthesia and nervous disease, shed much light on the obscure tales of the past, and assist the comprehension of how such beliefs could have originated. In brief, Mr. Lang outlines the programme for a "Comparative Psychical Research," and tells us that "we follow the stream of fable, as we track a burn to its head, and it leads us into shy and strange scenes of human life, haunted by very fearful wild fowl, and rarely visited, save by the credulous. There may be entertainment here, and, to the student of his species, there may be instruction." Part of the instruction will consist in gaining an increased familiarity with the psychological conditions which produce and foster these narratives and beliefs, and with their social and traditional significance; in concluding, with Mr. Lang, "that the psychological conditions which begat the ancient narratives produce the new legends."

IV

Thus far, our attention has been centred upon the tendenz, the basis of interest, and the affiliations of Psychical Research. It will be well to turn to a consideration of the content of the problems. Inasmuch as the term represents a convenient but arbitrary designation of a heterogeneous group of phenomena, we are prepared to find that the data of the several problems thus collected will be as diverse as their methods of study. We may begin with the group of problems which might properly be considered in the chapter of Abnormal Psychology that is devoted to the milder forms of aberrant or unusual mental phenomena. The study of hypnotism occupies a prominent place in Psychology and in Psychical Research. The remarkable exhibitions of extreme suggestibility, particularly the hyperÆsthesia thus inducible, and again the illumination of the subconscious thereby effected, have brought about a realizing sense of how fearfully and wonderfully we are made. Between savage priest and doctor, and Delphic oracle, and mediÆval ascetic, and magnetic somnambule, and inspirational medium, there is an irregular connection in their entrance into a trance-like condition involving a readjustment of the strata of consciousness and of the distribution of authority in the hierarchy of the nervous centres. This was and remains one of the gateways to the land of marvel and mystery. The importance of hypnotism in Psychology is in its use, both as a method of exhibiting the relations of processes not otherwise accessible to experiment, and as a demonstration of the actual possibilities of suggestion in health and disease. The hypnotic phenomena are intrinsically interesting and valuable as contributions to the natural history of mentality; the hypnotic method of study offers the experimental psychologist the opportunity to apply his most potent aid to research in precisely that field of inquiry in which the experimental methods of ordinary consciousness are least available.

In this domain, the psychologist and the "psychical researcher" proceed most amicably; and yet their purposes and points of view lead them frequently to part company, although it may be only for a brief au revoir. When the "psychical researcher" leaves the main highway to track a possible "telepathic" hypnotic subject, or one who, while hypnotized, is sensitive to the magnetic current, or who experiences the characteristic effects of drugs applied in sealed vials to the back of the neck, or who falls into the hypnotic condition when handling a "magnetized" doll,—the psychologist is apt to decline the invitation to join in the pursuit. I should advise him, however, to go along for the sake of the excellent illustrations thus obtainable of the effects of unconscious suggestion. From the time of the first serious investigation of these phenomena up to the present, unconscious suggestion has been one of the most potent influences for the production of alleged marvels and pseudo-phenomena. All the series of experiments brought forward at irregular intervals during the past century to establish supernormal sensibilities have depended for their apparent success (apart from trickery) upon unconscious suggestion of the operators, combined with the shrewd assimilation of the desired or expected result on the part of the subjects. The transposition of the senses discovered by PÉtetin (1787), the hypnotized subjects who in Braid's day (1850) proved the location of the phrenological organs by the appropriateness of their actions when certain parts of the head were pressed, the sensitiveness to magnets and hermetically sealed drugs brought forward by Reichenbach (1845), and by Bourru and Burot (1885), and Dr. Luys's (1890) absurd trifling with puppets, and probably, too, Charcot's sharp differentiation of distinct hypnotic conditions (1882),—all furnish illustrations of the subtle possibilities of unconscious suggestion. Besides adorning an interesting psychological tale, they point a moral to the intending investigator, and open his eyes to the extreme caution necessary to exclude this source of error, and to realize the ever-present possibility that, in spite of the sterilizing apparatus and the other equipments of modern research, the germs of this insidious form of delusion may have been unwittingly introduced.

The application of our knowledge of hypnotism to the explanation of alleged supernormal and unusual sensibilities is particularly interesting to the "psychical researcher"; the general enlargement of our knowledge of these conditions, irrespective of such an application, represents the aim of the psychologist. The latter may indeed cite Mr. Lang's dictum that "science is only concerned with truth, not with the mischievous inferences which people may draw from truth," as an excuse for his own declination to coÖperate in the correction of such mischievous inferences. But the civic conscience of the psychologist may convince him that the removal of error is often an indispensable requisite to the dissemination of truth.

The study of the subconscious or the subliminal consciousness, of multiple personality, of mental automatisms, of involuntary actions, of induced visualizations, of sporadic hallucinations, may be cited as further illustrations of topics interesting to the "psychical researcher" for their bearings upon the apparent transcendence of the normal, and to the psychologist for illustrations of important groups of mental processes and relations. I must refer to the general literature for descriptions of these several phenomena; the subtle connection between one hypnotic condition and the next, bridging over a period of normal consciousness with complete forgetfulness of the hypnotic consciousness; the still more subtle evidence for the latency of impressions thus revivable by an appeal to the subconscious; the elaboration, in trance experiences, of these nether world phenomena into organized personalities, which in the remarkable case reported by Professor Flournoy expanded from a personification of Marie Antoinette to that of a Martian revisiting Mars, describing Martian scenery and customs, and writing in Martian language, and again to the reincarnation of a Hindu princess of four centuries ago; the affiliation of these cases to those of spontaneous loss of personality in actual life, like that of the Rev. Ansel Bourne, related by Professor James; the automatic writings performed by hypnotic subjects and by persons in normal conditions; the power to induce visions by "crystal gazing," and auditory hallucinations by "shell-hearing"; the census of hallucinations, together with the very important series of observations relative to the psychology of deception,—these represent the more truly psychological contributions of psychologists and "psychical researchers" to their common domain.

The place which the explanation of spiritualistic and theosophic manifestations occupies in Psychical Research has already been noted; that of ghosts and rappings and haunted houses and poltergeists is quite similar. Not wholly yet measurably different is the status of the study of hallucinations, presentiments, and previsions or premonitions. In this entire group of phenomena, the interests of Psychology and of Psychical Research are in the main distinct. This is readily illustrated with reference to the study of hallucinations. These are interesting to the psychologist quite in the same sense as any other natural product of psycho-physiological action; the prevalence of hallucinations under fairly normal conditions presents one out of a large number of interesting details, and forms a proper investigation for the Society for Psychical Research. Their census of hallucinations hardly bears out the conclusions which have been drawn therefrom, but contains much interesting information. When, however, the emphasis of the investigation is placed upon "veridical" hallucinations, and the establishment of the conclusion that so many more of these hallucinations and presentiments "come true," or have a mysterious significance, than chance would allow, then the psychological interest is quite obscured by an interest of a totally different character. A "veridical" hallucination has little psychological pertinence; for it is equally interesting psychologically whether it happens to come true or not. The bearing of the hallucination upon or its origin in some of the occupations of normal waking life; the possibility of its interpretation as a peculiar retroactive illusion of memory, as Professor Royce has suggested for some cases; its significance as an unconscious perception of the shadow already present, not yet visible to consciousness, but coming before the event,—such are significant characteristics of hallucinations. The results of the study of hallucinations may likewise be applied to a determination of their relation to the sum total of the sequences of consciousness that constitute our mental life; but there is only a most incidental psychological interest in the apparently personally significant or "veridical" aspect of the phenomena. And furthermore, whether they are truly "veridical" or only seemingly so; whether, in other words, there is evidence enough in quality and quantity to make it a proper scientific inquiry as to the existence of a cause-and-effect-like relation between presentiment and issue,—this is a logical inquiry, although one which, along with other factors, includes psychological considerations.

We here naturally approach what has, on the whole, formed the most conspicuous problem of Psychical Research—that associated with the term "telepathy." It will contribute to clearness of distinction to consider separately the question, whether the evidence accumulated in any wise justifies the conclusion, that there exists a form of communication occasionally going on between mind and mind apart from the recognized channels of sensation. This, too, is a strictly logical question, and is so presented in the following essay. We are here concerned with the status of telepathy in its relation to Psychology and Psychical Research; this it is possible to indicate briefly. First, if there really exist this extra-normal, fitful and occasional, uncertain and sporadic form of communication, and if it can be conceived of in psychological terms, it forms an interesting, possibly even a momentous contribution to our knowledge of mental processes. In the present status of the alleged conditions of operations of telepathy, it will hardly modify seriously the direction or scope of the development of Psychology. It being unnecessary to cross bridges before coming to them, it may be sufficient to observe that up to the present there exists no decided prospect either of the demonstration of the reality of this process or of its psychological formulation; and far less either of its inclusion within the science of Psychology, or of its practical utilization. When the day comes when the incontestable establishment of telepathy, as indeed of any totally novel contribution to Psychology, shall require a revision of psychological principles, Psychology will certainly have to be revised. What, then, many will retort, can be more important for the psychologist than to devote himself to the investigation of telepathy, to decide whether his Psychology needs reconstruction or not? The answer is near at hand: there is no obligation upon any science to reconstruct its basal principles whenever it is suggested that these are incorrect or inadequate. It is not the suggestion of their inadequacy that is significant, but the concrete facts and evidence available to prove their inadequacy. If a new view can establish itself by its logical cogency and displace an accepted doctrine, if new facts, adequately established, make necessary a revision of current generalizations, no scientist and no science will protest. The present status of telepathy is simply not a formidable candidate for this distinction.

That the evidence brought forward in proof of telepathy, similarly to that adduced for "veridical hallucinations," is capable of psychological interpretation, and also contains interesting illustrations of obscure and subtle mental processes, becomes evident to the discerning student, and merits an extended demonstration. It is in the pursuit of such a demonstration that the psychologist turns to the records of "phantasms of the living," and of experimental thought-transference, thereby adding to an already significant and extensive collection of material illustrative of the influences of the undercurrents of thought-processes. Yet it is by no means urged that this is the only phase of utility which the study of telepathy holds out. That any one who is convinced of his ability to demonstrate telepathy is free to follow his conviction, will not be disputed; that in the course of his investigations he may succeed in revealing the presence of unrecognized forms of mental action, it would be mere dogmatism to deny. Two things, however, should be clearly understood; the first, that his data cannot claim serious attention before they are strong in their validity, and extensive in their scope, and consistently significant in their structure; then, and not before, are they ready for the crucible of scientific logic, from which they may or may not emerge as standard metal, to be stamped and circulated as accepted coin of the realm. The second point relates to the status of the obligation to disprove the telepathic position. This is more often a question of expediency than of right. If the obligation can readily be discharged, it is usually desirable to do so, for the reason that the removal of actual error and misconception is often one of the methods of advancing science; but there is no burden of disproof resting upon the scientist.

V

That the proceedings of the Society for Psychical Research contain valuable material in creditable quantity is evident to any unprejudiced reader; in many ways they are neither so bad nor so good as they are painted to be. That "psychical researchers," though pursuing their labors with different motives, have in one direction and another contributed to the advance of Psychology, I have attempted to make clear. Furthermore, the activity of this Society has been prominent in making the borderland of science of to-day present a far more hopeful aspect than ever before. It has substituted definiteness of statement, careful examination, recognition of sources of error, close adherence to as carefully authenticated fact as is attainable, for loose and extravagant speculation, for bare assertion and obscuring irrelevancy. It has made possible a scientific statement and a definiteness of conception of problems, even where its proposed solution of them may be thought misleading or inadequate. But in my opinion the debit side of the ledger far outbalances the credit side. The influence which Psychical Research has cast in favor of the occult, the enrollment under a common protective authority of the credulous and the superstitious, and the believers in mystery and in the personal significance of things, is but one of the evils which must be laid at its door. Equally pernicious is the distorted conception, which the prominence of Psychical Research has scattered broadcast, of the purposes and methods of Psychology. The status of that science has suffered, its representatives have been misunderstood, its advancement has been hampered, its appreciation by the public at large has been weakened and wrongly estimated, by reason of the popularity of the unfortunate aspects of Psychical Research, and of its confusion with them. Whatever in the publications of Psychical Research seems to favor mystery and to substantiate supernormal powers is readily absorbed, and its bearings fancifully interpreted and exaggerated; the more critical and successfully explanatory papers meet with a less extended and less sensational reception. Unless most wisely directed Psychical Research is likely, by not letting the right hand know what the left hand is doing, to foster the undesirable propensities of human nature as rapidly as it antagonizes them. Like indiscriminate almsgiving, it has the possibilities of affording relief and of making paupers at the same time. Particularly by the unwarranted acceptance of telepathy as a reality or as a working hypothesis, and the still more unwarranted use of this highly hypothetical process as a means of explaining more complex and obscure phenomena, has it defeated one of the most important purposes which it might have served.

The popular as well as the more critical acceptance of Psychical Research, both of the term and of the conceptions associated with it, has disseminated a totally false estimate on the part of the public at large of the scope and purposes of modern Psychology; and has quite possibly given an unfortunate twist to the trend of recent psychological thought. The right appreciation of scientific aims and ideals by the intelligent and influential public has come to be almost indispensable to the favorable advancement of science. Psychology can less afford than many another science to dispense with this helpful influence; and no science can remain unaffected by persistent misinterpretation of its true end and aims. If Psychical Research is to continue in its present temper, it becomes essential to have it clearly understood just how far its purposes and spirit are, and how much farther they are not, in accord with the purposes and the spirit of Psychology. The optimistic psychologist anticipates the day when he will no longer be regarded, either in high life or in low life, as a collector of ghost stories or an investigator of mediums. The disuse of the unfortunate term "Psychical Research," and far more, the modification of the conceptions animating this type of investigation, the pursuit of its more intrinsically psychological problems in a more truly psychological spirit, and perhaps, most of all, the disassociation of the term "Psychology" from the undesirable and irrelevant connotations of Psychical Research, are all consummations devoutly to be desired.