A numerous class of visions, presenting some of the most interesting phenomena of this branch of magic, must be looked upon as the result of the innate desire to fathom the mystery of future life. The human heart, conscious of immortality by nature and assured of it by revelation, desires ardently to lift the veil which conceals the secrets of the life to come. Among other means to accomplish this, the promise has often been exacted of dear friends, that they would, after death, return and make known their condition in the other world. Such compacts have been made from time immemorial--but so far their only result has been that the survivors have believed occasionally that they have received visits from deceased friends--in other words, that their state of great excitement and eager expectation has caused them to have visions. It remains true, after all, that from that bourne no traveler ever returns. Nevertheless, these visions have a deep interest for the psychologist, as they are the result of unconscious action, and thus display what thoughts dwell in our innermost heart concerning the future. V. GHOSTS. "Sunt aliquid manes; letum non omnia finit." There are few subjects, outside of the vexed questions of Theology, on which eminent men of all nations and ages have held more varied views than so-called ghosts. The very term has been understood differently by almost every great writer who has approached the boundary line of this department of magic. The word which is now commonly used in order to designate any immaterial being, not made of the earth, earthy, or perhaps, in a higher sense, the "body spiritual" of St. Paul, was in the early days of Christianity applied to the visible spirits of deceased persons only. In the Middle Ages again, when everything weird and unnatural was unhesitatingly ascribed to diabolic agency, these phenomena, also, were regarded as nothing else but the Devil's work. Theologians have added in recent days a new subject of controversy to this vexed matter. The divines of the seventeenth and eighteenth century denied, of course, the possibility of a reappearance of the spirits of the departed, as they were in consistency bound to deny the existence of a purgatory, and yet, from purgatory alone were these spirits, according to popular belief, allowed to revisit the earth--heaven and hell being comparatively closed places. As the people insisted upon seeing ghosts, however, there remained nothing but to declare them to be delusions produced for malign purposes by the Evil One himself; and so decided, not many generations ago, the Consistory of Basle in an appeal made by a German mystic author, Jung Stilling. And yet it is evident that a number of eminent thinkers, and not a few of the most skeptic philosophers even, have believed in the occurrence of such visits by inmates of Sheol. Hugo Grotius and Puffendorf, whose far-famed worldly