https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/14016231Edit ImageSaveSaveEditCropCustom TextEssays on the floating-matter of the air in relation to putrefaction and infection / by John Tyndall.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 947 x 1200 px | 300 dpiLarge JPEG 1214 x 1538 px | 300 dpiFree DownloadEssays on the floating-matter of the air in relation to putrefaction and infection / by John Tyndall.More