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blackandwhite monochrome black and white John Haygarth. Line engraving by W. Cooke after J. H. Credit Wellcome Library London. Wellcome Images imageswellcome.ac.uk wellcomeimages.org John Haygarth. Line engraving by W. Cooke after J. H. Bell. Line engraving Gent's magazine Published Copyrighted work available under Creative Commons