The first remark that arises out of this narrative is, that nothing is actually done by the supernatural personages which are exhibited. The magician reports certain answers as given by the demons; but these answers do not appear to have been heard from any lips but those of him who was the creator or cause of the scene. The whole of the demons therefore were merely figures, produced by the magic lantern (which is said to have been invented by Roger Bacon), or by something of that nature. The burning of the perfumes served to produce a dense atmosphere, that was calculated to exaggerate, and render more formidable and terrific, the figures which were exhibited. The magic lantern, which is now the amusement only of servant-maids, and boys at school in their holidays, served at this remote period, and when the power of optical delusions was unknown, to terrify men of wisdom and penetration, and make them believe that legions of devils from the infernal regions were come among them, to produce the most horrible effects, and suspend and invert the laws of nature. It is probable, that the magician, who carried home with him a "wallet full of books," also carried at the same time the magic lantern or mirror, with its lights, which had served him for his exhibition, and that this was the cause of the phenomenon, that they observed two of the demons which they had seen at the amphitheatre, going before them on their return, "leaping and skipping, sometimes running on the roofs of the houses, and sometimes on the ground." [209] NOSTRADAMUS. Michael Nostradamus, a celebrated astrologer, was born at St. Remi in Provence in the year 1503. He published a Century of Prophecies in obscure and oracular terms and barbarous verse, and other works. In the period in which he lived the pretended art of astrological prediction was in the highest repute; and its professors were sought for by emperors and kings, and entertained with the greatest distinction and honour. Henry the Second of France, moved with his great renown, sent for Nostradamus to court, received much gratification from his visit, and afterward ordered him to Blois, that he might see the princes, his sons, calculate their horoscopes, and predict their future fortunes. He was no less in favour afterwards with Charles the Ninth. He died in the year 1566. DOCTOR DEE.