There is in modern fiction, notably the work of Poe, and that of many recent writers, Russian, French, and German as well as English, a type of supernaturalism that is closely associated with insanity. One may not tell just where the line is drawn, just how much of the element of the uncanny is the result of the broodings of an unbalanced brain, and how much is real ghostliness. Poe's studies of madness verge on the unearthly, as do Maupassant's, Hoffmann's, and others. Josephine Daskam Bacon illustrates this genre in a recent volume of stories, _The Strange Cases of Dr. Stanchion_, the plots centering round instances of paranoia occurring in the practice of a famous alienist,--yet they are _not paranoia alone_! One instance is of a young girl who is haunted by the ghost of a nurse who has died because given the wrong medicine by mistake. She is on the border-line of insanity when her lover cries aloud that he would take the curse on himself for her if he could, which, by some unknown psychic law, does effect a transference which frees her and obsesses him. Another is that of a man in the insane asylum, who recognizes in a mysterious housekeeper the spirit of his wife, who comes from the grave to keep him company and vanishes on the day of his death. These are curious analyses of the _idée fixe_ in its effect on the human mind, of insanity as a cause or effect of the supernatural. Barry Pain's _Celestial Grocery_ is a recent example, a story of a man whose madness carries him to another planet, showing him inverted aspects of life, where emotions are the only real things, all else but shadows. Du Maurier's pathetic novel portraying the passion and anguish and joy of Peter Ibbetson that touches the thin line between sanity and madness, showing in his dream-metempsychosis a power to relive the past and even to live someone else's life, is a striking example. One interesting aspect of that story is the point where the spirit of Mary changes from the dream-lover of twenty-eight to the ghost of the woman of fifty-two, since she has died and can no more come to her lover as she once did, but must come as her own phantom. There are extraordinary effects of insanity associated with the supernatural in the work of Ambrose Bierce, of Arthur Machen and others of the modern school. Italian literature shows some significant instances in Fogazzaro's _The Woman_ and D'Annunzio's _Sogno d'un Mattino di Primavera_. As Lord Dunsany says of it, "Who can say of insanity,--whether it be divine or of the Pit?" * * * * *