19 Feb 1817 and 25 June 1823 with J Cadogan Willats' resignation of his fellowship [not to be found in official minute books although official minute of 2 July 1823 mentions the meeting in June]; meetings on 11 Aug 1818, 23 Feb 1820, 22 April 1820, 23 Mar 1822, 4 June 1822, 6 July 1822, 31 Mar 1823 with letter from Rev Say, 2 Jan 1824 with resignation of Prof Rolfe [all these can be found in official minute vols]