Observing eye, Masonic chart of the Scottish rite. Remixed by rawpixel. https://www.rawpixel.com/image/9577457/image-art-vintage-eyeView licenseObserving eye, Masonic chart of the Scottish rite. Remixed by rawpixel. https://www.rawpixel.com/image/9579067/image-art-vintage-eyeView licenseCampi Phlegraei. Observations on the volcanos of the two Sicilies as they have been communicated to the Royal Society of… https://www.rawpixel.com/image/13962643/image-cloud-person-artFree Image from public domain licenseCampi Phlegraei. Observations on the volcanos of the two Sicilies as they have been communicated to the Royal Society of… https://www.rawpixel.com/image/13962308/image-cloud-person-artFree Image from public domain licenseThe natural history of Selborne / By the late Rev. Gilbert White... To which are added, the naturalist's calendar [by G.… https://www.rawpixel.com/image/13961778/image-cartoon-art-animalFree Image from public domain licenseAstronomy explained upon Sir Isaac Newton's principles. And made easy to those who have not studied mathematics / To which… https://www.rawpixel.com/image/13952207/image-paper-cartoon-world-mapFree Image from public domain license