Woodcut showing (left) a water bath (Balneum Mariae or bain marie), and (right) two figures, probably astrologers, surmounted by the symbol for Leo. Illustration from 'Liber de arte Distillandi de Compositis' (Book of the art of distillation of compound bodies) by Hieronymus Brunschwig (c 1450-c 1512) published in Strasbourg in 1512. Brunschwig's works are chiefly concerned with the preparation of medicines, but include such alchemical preparations such as the Quintesence and Potable Gold. They are also the source for some of the earliest images of chemical apparatus.
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