https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13954723Edit ImageSaveSaveEditCropCustom TextAn alchemist in his laboratory. Oil painting by or after David Ryckaert III.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 901 px | 300 dpiLarge JPEG 3116 x 2340 px | 300 dpiFree DownloadAn alchemist in his laboratory. Oil painting by or after David Ryckaert III.More