This class comprises an assorted collection of printed matter, mostly papers relevant to Darwin's publications including 'Earthworms', 'Earthquakes', 'Glen Roy', 'Erratic boulders' and 'Insectivorous plants'. This class also includes John Murray's statements on sales of Darwin's books, the speech made by the Public Orator on the occasion of Darwin's honorary degree at Cambridge, a Greek translation of 'Biographical sketch of an infant', articles relating to Darwin's religion and articles on cross-fertilisation.