STC202508 Allegory of Putrefaction, from Basile Valentine\'s \'Azoth\', 1659, illustrated in \'History of Magic\', published late 19th century (litho) by German School, (17th century) (after); Private Collection; (add.info.: refers to change of colour from black to white & chemical changes of mercury;); The Stapleton Collection; German, out of copyright.