https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13999929Edit ImageSaveSaveEditCropCustom TextEssays and observations, physical and literary : read before a society in Edinburgh, and published by them.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 865 x 1200 px | 300 dpiLarge JPEG 1174 x 1628 px | 300 dpiFree DownloadEssays and observations, physical and literary : read before a society in Edinburgh, and published by them.More