2604805 Copper alembic over furnace being used for distillation. The liquid was condensed by leading it through a tube \'worm\' in a tub of vold water \'refrigerator\' at bottom right. Woodcut, London, 1837; (add.info.: Copper alembic over furnace being used for distillation. The liquid was condensed by leading it through a tube \'worm\' in a tub of void water \'refrigerator\' at bottom right. Woodcut, London, 1837); Universal History Archive/UIG; out of copyright.