Bond of Sir Ellis Leighton to the Treasurer of the Royal Society Form of bond for the payment of fifty-two shillings annually to the Royal Society in four quarterly instalments, as a Fellowship subscription. Commencing: 'I, Sir Ellis Leighton of London Knight...' Signed by Ellis Leighton. Sealed and delivered in the presence of Henry Oldenburg, Peter van den Dryessthre [?] and Edmund Stacke. Endorsed verso. 26 December 1674