The letters and the life of Francis Bacon, including all his occassi onal works, namely letters, speeches, tracts, state papers, memorials, devices and all authentic writings not already printed anmong his philo sophical, literary, or proffessional works, newly collected and set for th in chronological order with a commentary biographical and historical . - Bacon, Francis, 1561-1626; Spedding, James, 1808-1881 (London : Longman's, and Roberts, 1861)