https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14011754Edit ImageSaveSaveEditCropCustom TextThe Royal Institution or School of Arts, Edinburgh, Scotland. Line engraving by A. Cruse, 1829, after T.H. Shepherd.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 891 px | 300 dpiLarge JPEG 3466 x 2574 px | 300 dpiFree DownloadThe Royal Institution or School of Arts, Edinburgh, Scotland. Line engraving by A. Cruse, 1829, after T.H. Shepherd.More