(fols. 1-37) journals and diaries, 1854-9 (fols. 38-83) Sir Charles's notes and workings on the quadrature of the circle, c.1860, later published as A preface to a demonstration of the quadrature of the circle (London, 1863) (fols. 84-137) miscellaneous papers, 1838-62, n.d., including (fols. 84-9) Sir Charles's invitation to…