https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13982083Edit ImageSaveSaveEditCropCustom TextJohn Gregory. Stipple engraving by W. Ridley, 1804, after F. Cotes, 1764.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 861 x 1200 px | 300 dpiLarge JPEG 1188 x 1656 px | 300 dpiFree DownloadJohn Gregory. Stipple engraving by W. Ridley, 1804, after F. Cotes, 1764.More