https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13981967Edit ImageSaveSaveEditCropCustom TextA chemical lecture at the Surrey Institution. Coloured etching by T. Rowlandson after his drawing, 1809.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 862 px | 300 dpiLarge JPEG 1676 x 1204 px | 300 dpiFree DownloadA chemical lecture at the Surrey Institution. Coloured etching by T. Rowlandson after his drawing, 1809.More