The traveller rudely jarred the barrel, the light went out, as the torches flared upon it; and suddenly there appeared to the eyes of the astounded man, close at one side of the barrel, a little naked child, which ran thrice around the barrel, uttering deep curses upon him who had thus destroyed the charm, and vanished. The frightened traveller made off as fast as he could, and poor old Virgil, for what I know, is in pickle yet. Cornelius Agrippa was one of the most celebrated magicians of the middle ages. He lived from the year 1486 (six years before the discovery of America) until 1534, and was a native of Cologne, Agrippa is said to have had a magic glass in which he showed to his customers such dead or absent persons as they might wish to see. Thus he would call up the beautiful Helen of Troy, or Cicero in the midst of an oration; or to a pining lover, the figure of his absent lady, as she was employed at the moment--a dangerous exhibition! For who knows, whether the consolation sought by the fair one, will always be such as her lover will approve? Agrippa, they say, had an attendant devil in the form of a huge black dog, whom on his death-bed the magician dismissed with curses. The dog ran away, plunged into the river Saone and was seen no more. We are of course to suppose that his Satanic Majesty got possession of the conjuror's soul however, as per agreement. There is a story about Agrippa, which shows conclusively how "a little learning" may be "a dangerous thing." When Agrippa was absent on a short journey, his student in magic slipped into the study and began to read spells out of a great book. After a little there was a knock at the door, but the young man paid no attention to it. In another moment there was another louder one, which startled him, but still he read on. In a moment the door opened, and in came a fine large devil who angrily asked, "What do you call me for?" The frightened youth answered very much like those naughty boys who say "I didn't do nothing!" But it will not do to fool with devils. The angry demon caught him by the throat and strangled him. Shortly, when Agrippa returned, lo and behold, a strong squad of evil spirits were kicking up their heels and playing tag all over the house, and crowding his study particularly full. Like a schoolmaster among mischievous boys, the great enchanter sent all the little fellows home, catechised the big one, and finding the situation unpleasant, made him reanimate the corpse of the student and walk it about town all the afternoon. The malignant demon however, was free at sunset, and let the corpse drop dead in the middle of the market place. The people recognized it, found the claw-marks and traces of strangling, suspected the fact, and Agrippa had to abscond very suddenly.