(1) Born at Richmond, Surrey, August 16, 1821; died at Cambridge, January 26, 1895. For biography, see Macfarlane, Ten Brit. Math., p. 64.

(2) Through funds bequeathed originally by Lady Sadler to found certain lectureships (1710).

(3) "Cayley, of whom it may so truly be said, whether the matter he take in hand be great or small, 'nihil tetigit quod non ornavit.'" Phil. Trans., XVII (1864), 605.