Apollonius Tyaneus, a Pythagorian philosopher and chief of a school of philosophy which was the predecessor of the Alexandrian Neo-Platonists, is credited with most remarkable clairvoyant powers. Many instances of this faculty are recorded and believed upon the best of ancient authority. One instance relates to the assassination of Domitian. Apollonius was in the midst of a discourse at Ephesus, when suddenly he stopped as though having lost his train of thought. After a moment's hesitation, to the astonishment of his auditors, he cried out: "Strike! strike the tyrant." Seeing the surprise of the people he explained that at the very moment at which he had stopped in his discourse the tyrant was slain. Subsequent information proved that Domitian, the reigning tyrant, was assassinated at that very moment. Ancient historians, philosophers and poets all unite in defending the truth of the oracles and their power of perceiving events transpiring at a distance, and also of foreseeing those in the future. Herodotus gives more than seventy examples of oracular responses, dreams and portents which he affirms were literally fulfilled. Livy gives more than fifty, Cicero many striking cases; and Xenophon, Plato, Tacitus, Suetonius, and a host of other writers all give evidence in the same direction. Now whether these responses and visions were, as all these intelligent people supposed, from a supernatural source, or as we shall endeavor to show, had their origin in certain faculties naturally appertaining to the mind, and which at certain times and under certain favorable circumstances came into activity, it certainly shows that the most intelligent men amongst all the most cultivated nations of the past have been firm believers in the reality of clairvoyance. Coming down to later times, Emanuel Swedenborg, and Frederica Hauffé, the seeress of Proverst, were marked examples of the clairvoyant faculty. Some have affected to discredit Swedenborg's clairvoyant powers, but apart from his revelations regarding a spiritual world, which, of course, it is at present impossible to substantiate, whatever may be our belief regarding them, if human testimony is to be regarded of any value whatever in matters of this kind, the following oft-told incident should be counted as established for a verity. On a Saturday afternoon in September, 1756, Swedenborg arrived in Gottenburg from England. Gottenburg is three hundred miles from Stockholm, which was the home of Swedenborg. On the same evening he was the guest of Mr. William Castel, with fifteen other persons, who were invited to meet him, and who, on that account, may be supposed to have been of more than ordinary consequence and intelligence.