Until now we have spoken only of the spontaneous manifestations of the future. It would seem as though coming events, gathered in front of our lives, bear with crushing weight upon the uncertain and deceptive dike of the present, which is no longer able to contain them. They ooze through, they seek a crevice by which to reach us. But side by side with these passive, independent and intractable premonitions, which are but so many vagrant and furtive emanations of the unknown, are others which do yield to entreaty, allow themselves to be directed into channels, are more or less obedient to our orders and will sometimes reply to the questions which we put to them. They come from the same inaccessible reservoir, are no less mysterious, but yet appear a little more human than the others; and, without drugging ourselves with puerile or dangerous illusions, we may be permitted to hope that, if we follow them and study them attentively, they will one day open to us the hidden paths joining that which is no more to that which is not yet. It is true that here, where we must needs mix with the somewhat lawless world of professional mystery-mongers, we have to increase our caution and walk with measured steps on very suspicious ground. But even in this region of pitfalls we glean a certain number of facts that cannot reasonably be contested. It will be enough to recall, for instance, the symbolic premonitions of the famous “seeress of Prevorst,” Frau Hauffe, whose prophetic spirit was awakened by soap-bubbles, crystals and mirrors;[15] the clairvoyant who, eighteen years before the event, foretold the death of a girl by the hand of her rival in 1907, in a written prophecy which was presented to the court by the mother of the murdered girl;[16] the gipsy who, also in writing, foretold all the events in Miss Isabel Arundel’s life, including the name of her husband, Burton the famous explorer;[17] the sealed letter addressed to M. Morin, vice-president of the Société du mesmerisme, describing the most unexpected circumstances of a death that occurred a month later;[18] the famous “Marmontel prediction,” obtained by Mrs. Verrall’s cross-correspondences, which gives a vision, two months and a half before their accomplishment, of the most insignificant actions of a traveller in an hotel bedroom;[19] and many others. 9