Pouring mercury from small tube into pen which contains flour gold mixed with the natural dirt. Process for removing this… https://www.rawpixel.com/image/12108073/image-hand-person-artFree Image from public domain licenseIsaac Swainson promoting his 'Velnos syrup', facing an onslaught of rival practitioners advocating mercury. Coloured etching… https://www.rawpixel.com/image/13962808/image-cartoon-face-peopleFree Image from public domain licenseMercurius met een trompet en putti die de huid van de Nemeïsche leeuw dragen (1713 - 1719) by Bernard Picart, Bernard… https://www.rawpixel.com/image/13783785/image-paper-cartoon-faceFree Image from public domain licenseMercury flying off with the head of Argus whose decapitated body lies on the ground. Red chalk drawing. https://www.rawpixel.com/image/13976249/image-face-person-treeFree Image from public domain licenseIsaac Swainson promoting his 'Velnos syrup', facing an onslaught of rival practitioners advocating mercury. Coloured etching… https://www.rawpixel.com/image/14013903/image-cartoon-person-bookFree Image from public domain license