Residents at the Old Royal Infirmary, Edinburgh, summer 1854: clockwise from left, John Beddoe (seated left), John Kirk (back row), George Hogarth Pringle (back row), Patrick Heron Watson (back row), Alexander Struthers (seated right), David Christison (seated in front, right), Joseph Lister (seated in front, left). Photograph.

Licence: Public Domain Mark

Credit: Residents at the Old Royal Infirmary, Edinburgh, summer 1854: clockwise from left, John Beddoe (seated left), John Kirk (back row), George Hogarth Pringle (back row), Patrick Heron Watson (back row), Alexander Struthers (seated right), David Christison (seated in front, right), Joseph Lister (seated in front, left). Photograph. Wellcome Collection. Source: Wellcome Collection.