https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13973782Edit ImageSaveSaveEditCropCustom TextJohann Rudolph Salzmann. Line engraving by P. Aubry II after himself.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 843 x 1200 px | 300 dpiLarge JPEG 2448 x 3486 px | 300 dpiFree DownloadJohann Rudolph Salzmann. Line engraving by P. Aubry II after himself.More