Fifty eight simple plant leaves of different forms. Coloured etching by J. Pass, c. 1799. https://www.rawpixel.com/image/13960220/image-background-plant-medicineFree Image from public domain licenseMonstrocities of 1799, Scene Kensington Gardens. Original from the Minneapolis Institute of Art. https://www.rawpixel.com/image/7651674/image-vintage-art-public-domainFree Image from public domain license