200.1 Johann Joachim BECHER. Institutiones chimicę prodromę. Oedipus chimicus obscuriorum terminorum et principiorium chimicorum, mysteria aperiens et resolvens. Opusculum, omnibus Medicinae & Chimiae Studiosis lectu perquam utile & necessarium. 12° Amstelodami: Elizaeus Weyerstraten 1664 Ferguson Young Nat Union Cat Wisconsin Bibliotheque Nationale [Illustrations:- 1. Frontispiece engraving. 117x64mm. Mercury with caduceus stands beside an alchemist seated at his furnace. Through the open door we see a man (Oedipus?) with a staff made out the symbols of the planetary metals standing beside a cave with two harpies (or sphinxes). 2. p xvi Engraving. 115x60mm. Depiction of medal struck to commemorate a transmutation performed at Prague on the 15th January 1648 in the presence of Emperor Ferdinand III. See Creiling, 'Die edelgeborne Jungfer Alchymia', 1730.]