https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14009934Edit ImageSaveSaveEditCropCustom TextPeter Barlow. Stipple engraving after Thales Fielding, 1835.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 964 x 1200 px | 300 dpiLarge JPEG 2607 x 3244 px | 300 dpiFree DownloadPeter Barlow. Stipple engraving after Thales Fielding, 1835.More