There are very extraordinary stories extant in all countries, of persons being annoyed by appearances in the shape of different animals, which one would certainly be much disposed to give over altogether to the illusionists; though, at the same time, it is very difficult to reduce some of the circumstances under that theory—especially one mentioned page 307 of my “Translation of the Seeress of Prevorst.” If they are not illusions, they are phenomena, to be attributed either to this plastic power, or to that magico-magnetic influence in which the belief in lycanthropy and other strange transformations have originated. The multitudes of unaccountable stories of this description recorded in the witch-trials, have long furnished a subject of perplexity to everybody who was sufficiently just to human nature to conclude, that there must have been some strange mystery at the bottom of an infatuation that prevailed so universally, and in which so many sensible, honest, and well-meaning persons were involved. Till of late years, when some of the arcana of animal or vital magnetism have been disclosed to us, it was impossible for us to conceive by what means such strange conceptions could prevail; but since we now know, and many of us have witnessed, that all the senses of a patient are frequently in such subjection to his magnetiser, that they may be made to convey any impressions to the brain that magnetiser wills, we can without much difficulty conceive how this belief in the power of transformation took its rise; and we also know how a magician could render himself visible or invisible at pleasure. I have seen the sight or hearing of a patient taken away, and restored by Mr. Spencer Hall in a manner that could leave no doubt on the mind of the beholder—the evident paralysis of the eye of the patient testifying to the fact. Monsieur Eusèbe Salverte, the most determined of rationalistic skeptics, admits that we have numerous testimonies to the existence of an art, which he confesses himself at some loss to explain, although the opposite quarters from which the accounts of it reach us, render it difficult to imagine that the historians have copied each other. The various transformations of the gods into eagles, bulls, &c., have been set down as mere mythological fables; but they appear to have been founded on an art, known in all quarters of the world, which enabled the magician to take on a form that was not his own, so as to deceive his nearest and dearest friends. In the history of Gengis Khan, there is mention of a city which he conquered—“in which dwelt,” says Suidas, “certain men, who possessed the secret of surrounding themselves with deceptive appearances, insomuch that they were able to represent themselves to the eyes of people quite different to what they really were.” Saxo Grammaticus, in speaking of the traditions connected with the religion of Odin, says that “the magi were very expert in the art of deceiving the eyes, being