https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13969825Edit ImageSaveSaveEditCropCustom TextSpectrum analysis : six lectures, delivered in 1868, before the Society of Apothecaries of London / by Sir Henry E. Roscoe ; with appendices, coloured plates and illustrations.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 839 x 1200 px | 300 dpiLarge JPEG 2448 x 3500 px | 300 dpiBest Quality JPEG 4677 x 6688 px | 300 dpiFree DownloadSpectrum analysis : six lectures, delivered in 1868, before the Society of Apothecaries of London / by Sir Henry E. Roscoe ; with appendices, coloured plates and illustrations.More