CHAPTER XXXVII.

Magic a Study among the Learned--Plato and Pythagoras travelled to learn the Art, and taught it--Speakers made Eloquent by Magical Art--Virtue of Gems--How Jewels should be set--When they are to be Graven--Cures effected by Hippocrates--Democritus on Magic--Many Charms--Evil Spirits--Magicians sacrificing to the Planets--Magician's Power to produce Monstrous Creatures--Egyptian Magicians--Magical Circles--Throwing Old Shoes--Figures on Shoes--A Hangman's Soul--Directions for raising Ghosts and Spirits 339