Chemistry: symbols of elements and substances. Coloured engraving by H. Ashby, 1799, after W. Jackson. https://www.rawpixel.com/image/13967243/image-paper-public-domain-drawingFree Image from public domain license
Chemistry: symbols of elements and substances. Coloured engraving by H. Ashby, 1799, after W. Jackson. https://www.rawpixel.com/image/14009249/image-background-paper-cartoonFree Image from public domain license
Chemical characters. Engraving by H. Ashby, 1799, after W. Jackson. https://www.rawpixel.com/image/14010464/chemical-characters-engraving-ashby-1799-after-jacksonFree Image from public domain license