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SNAKE STONES AND BEZOARS                225
révive the nerve-centres, paralyzed by the animal poison, was recognized at this time. An unusually precise descrip­tion is given of the ostrites; it was round, hard, black and rough, and was marked by many wavy lines or veins. Some one of the many varieties of banded agate seems to answer best to this description.41
The legend that St Patrick drove out all snakes from Ireland sometimes took the form that the saint had trans­formed them into stones. This belief is noted by Andrew Borde, physician and ecclesiastic, who, writing in 1542, mentions some strange stones he had been shown on that island :
I have sene stones the whiche have had the forme and shape of a snake and other venimous wormes. And the people of the countrie sayth that such stones were wormes, and they were turned into stones by the power of God and the prayers of saynt Patrick. And English merchauntes of England do fetch of the erth of Monde to caste in their garden's, to keepe out and to kyll venimous wormes."
The legendary serpent-stone is usually one taken from the reptile's head, but Welsh tradition tells of one extracted from the tail of a serpent by the hero Peredur, and having the magic property that anyone holding it in one hand would grasp a handful of gold in the other. This stone was gener­ously bestowed upon Etlym by the finder, who only secured it after vanquishing the serpent in a dangerous conflict.43
The snake-stone (or "mad-stone"), in Arabic hajar al-hayyat, is described by the Arab writer Kazwini, as being of the size of a small nut. It was found in the heads of certain snakes. To cure the bite of a venomous creature the
« " Lithica," lines 336 sqq.
β The fyrste boke of the introduction of Knowledge made by Andrew Borde of Psysycke Doctore. Ed. by Furnival, London, 1870, p. 121. Early English Text Soc., Extra Series No. X.
"Wirt Sikes, "British Goblins: Welsh Folk-lore, Fairy Myths, Legends and Traditions," London, 1S80, p. 366.
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