Theatrum Chemicum Britannicum first published in 1652, is an extensively annotated compilation of English alchemical literature selected by Elias Ashmole. The book preserved and made available many works that had previously existed only in privately held manuscripts. It features the alchemical verse of people such as Thomas Norton, George Ripley, Geoffrey Chaucer, John Gower, John Lydgate, John Dastin, Abraham Andrews and William Backhouse.In his preface Ashmole says of himself, "I must profess I know enough to hold my tongue, but not enough to speak." Source: Wikipedia (en)