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 on stones and worn by the early Christians, the Gnostic gems, the coral necklaces, the bezoar stones, the toad ashes, the strands of the ropes used for hanging criminals, the magnets of the middle ages and of modern times, and a thousand other things, credited with magical curative properties, might be cited. Besides these there are myriads of forms of words written or spoken, some pious, some gibberish, which have been used and recommended both with and without drugs.

Schelenz in "Geschichte der Pharmacie" (1904) quotes from Jakob Mærlant of Bruges, "the Father of Flemish science" (born about 1235) the recommendation of an "Amulettring" on the stone of which the figure of Mercury was engraved, and which would make the wearer healthy, "die mæct sinen traghere ghesont." (See Cramp Rings, p. 305.)

How widespread has been the belief in the power of amulets and charms may be gathered from a few instances of such superstitions among famous persons. Lord Bacon was convinced that warts could be cured by rubbing lard on them and transferring the lard to a post. The warts would die when the lard dried. Robert Boyle attributed the cure of a hæmorrhage to wearing some moss from a dead man's skull. The father of Sir Christopher Wren relates that Lord Burghley, the Lord Treasurer of England in Queen Elizabeth's reign, kept off the gout by always wearing a blue ribbon studded with a particular kind of snail shells round his leg. Whenever he left it off the pain returned violently. Burton in the "Anatomy of Melancholy" (1621) says St. John's Wort gathered on a Friday in the horn of Jupiter, when it comes to his effectual operation (that is about full moon in July), hung about