https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13956179Edit ImageSaveSaveEditCropCustom TextFive dragonflies and four mayflies. Coloured engraving by J. Newton, ca. 1780, after J. Barbut.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 875 x 1200 px | 300 dpiLarge JPEG 1299 x 1781 px | 300 dpiFree DownloadFive dragonflies and four mayflies. Coloured engraving by J. Newton, ca. 1780, after J. Barbut.More