wayward darling of Nature, acute yet frivolous, free from even the ordinary passions of youth, taking delight in innocent amusements, incapable of continuous study, without a single pang of repentance for the crimes you so fancifully impute to him. And now, when your suspicions, so romantically conceived, are dispelled by positive facts, now, when it is clear that Margrave neither murdered Sir Philip Derval nor abstracted the memoir, you still, unconsciously to yourself, draw on your imagination in order to excuse the suspicion your pride of intellect declines to banish, and suppose that this youthful sorcerer tempted the madman to the murder, the woman to the theft--" "But you forget the madman said 'that he was led on by the Luminous Shadow of a beautiful youth,' that the woman said also that she was impelled by some mysterious agency." "I do not forget those coincidences; but how your learning would dismiss them as nugatory were your imagination not disposed to exaggerate them! When you read the authentic histories of any popular illusion, such as the spurious inspirations of the Jansenist Convulsionaries, the apparitions that invaded convents, as deposed in the trial of Urbain Grandier, the confessions of witches and wizards in places the most remote from each other, or, at this day, the tales of 'spirit-manifestation' recorded in half the towns and villages of America,--do not all the superstitious impressions of a particular time have a common family likeness? What one sees, another sees, though there has been no communication between the two. I cannot tell you why these phantasms thus partake of the nature of an atmospheric epidemic; the fact remains incontestable. And strange as may be the coincidence between your impressions of a mystic agency and those of some other brains not cognizant of the chimeras of your own, still, is it not simpler philosophy to say, 'They are coincidences of the same nature which made witches in the same epoch all tell much the same story of the broomsticks they rode and the sabbats at which they danced to the fiend's piping,' and there leave the matter, as in science we must leave many of the most elementary and familiar phenomena inexplicable as to their causes,--is not this, I say, more philosophical than to insist upon an explanation which accepts the supernatural rather than leave the extraordinary unaccounted for?" "As you speak," said I, resting my downcast face upon my hand, "I should speak to any patient who had confided to me the tale I have told to you."