8vo. Vol 1 - Mathematical Papers; Vol 2 - The Difference Engine and Table Making; Vol 3 - The Analytical Engine and Mechanical Notation (includes Sketch of the Analytical Engine by A.A. Lovelace (1843).); Vol 4 - Scientific and Miscellaneous Papers; Vol 5 - Scientific and Miscellaneous Papers; Vol 6 - A Comparative View of the various Institutions for the Assurance of Lives; Vol 7 - Reflections on the Decline of Science in England and on some of its Causes; Vol 8 - The Economy of Machinery and Manufactures; Vol 9 - The Ninth Bridgewater Treatise. A Fragment; Vol 10 - The Exposition of 1851; Vol 11 - Passages from the Life of a Philosopher.