Alchemy is thought to have originated over 2000 years ago in Hellenic Egypt, the result of three converging streams: Greek philosophy, Egyptian technology and the mysticism of Middle Eastern religions. Its heyday was from about 800 A.D. to the middle of the seventeenth century, and its practitioners ranged from kings, popes, and emperors to minor clergy, parish clerks, smiths, dyers, and tinkers. Even such accomplished men as Roger Bacon, Thomas...