constituents are presented in their several isolation. Such phenomena are relapses into more rudimentary grades: but with the difference that they are set in the midst of a more advanced phase of intellectual life. Even amongst candid and honest-minded students of psychology there is a certain reluctance to dabble in researches into the night-side of the mental range. Herbart is an instance of this shrinking. The region of the Unconscious seemed—and to many still seems—a region in which the charlatan and the dupe can and must play into each other’s hands. Once in the whirl of spiritualist and crypto-psychical inquiry you could not tell how far you might be carried. The facts moreover were of a peculiar type. Dependent as they seemed to be on the frame of mind of observers and observed, they defied the ordinary criteria of detached and abstract observation. You can only observe them, it is urged, when you believe; scepticism destroys them. Now there is a widespread natural impatience against what Bacon has called “monodical” phenomena, phenomena i.e. which claim to come under a special law of their own, or to have a private and privileged sphere. And this impatience cuts the Gordian knot by a determination to treat all instances which oppose its hitherto ascertained laws as due to deception and fraud, or, at the best, to incompetent observation, confusions of memory, and superstitions of ignorance. Above all, great interests of religion and personality seemed to connect themselves with these revelations—interests, at any rate, to which our common humanity thrills; it seemed as if, in this region beyond the customary range of the conscious and the seen, one might learn something of the deeper realities which lie in the unseen. But to feel that so much was at stake was naturally unfavourable to purely dispassionate observation. The philosophers were found—as might have been expected—amongst those most strongly attracted by these problems. Even Kant had been fascinated by the spiritualism of Swedenborg, though he finally turned away sceptical. At least as early as 1806 Schelling had been interested by Ritter’s researches into the question of telepathy, or the power of the human will to produce without mechanical means of conveyance an effect at a distance. He was looking forward to the rise of a _Physica coelestis_, or New Celestial Physics, which should justify the old magic. About the same date his brother Karl published an essay on Animal Magnetism. The novel phenomena of galvanism and its congeners suggested vast possibilities in the range of the physical powers, especially of the physical powers of the human psyche as a natural agent. The divining-rod was revived. Clairvoyance and somnambulism were carefully studied, and the curative powers of animal magnetism found many advocates(83).