Reputed to have performed miraculous feats in New England--restoring the hair and teeth to an aged lady, bringing a withered peach tree to fruit--Eirenaeus Philalethes was also rumored to be an adept possessor of the alchemical philosophers' stone. That the man was merely a mythical creation didn't diminish his reputation a whit--his writings were spectacularly successful, read by Leibniz, esteemed by Newton and Boyle, voraciously consumed by countless...