The contents are as follows. (i) Printing press for the Bank of England, correspondence and plan, 1805, 1810-1811, 1813-1815 (folio 1); (ii) Railways (folio 26); Berwick and Kelso, letters, report, and plans, 1808, 1810-1811; Charlestown, letter, 1812; Mansfield and Pinxton, letters, 1817; (iii) Retaining walls, (folio 49); Annan, reports, 1821; Chetney, letters, 1811, 1817; North Lynn, report, 1809. Redculver, correspondence and estimates, 1807, report, 1820; Tulliallan, correspondence and estimate, 1821; (iv) Romney Marsh drainage, letters, 1804 (folio 83); (v) Royal Mint, correspondence and estimates concerning coin presses, 1805-1806, 1816 (folio 87); (vi) Steam boats, correspondence and plans, 1817-1820, relating to various applications of steam to the propulsion of boats. Letters concerning the Rhine cruise of the 'Caledonia' are to be found in MS. 19824, folios 116-123. (folio 172); (vii) Towers batteries on the Irish coast, correspondence, 1804, 1806, largely connected with the financial affairs of John Murray the contractor (folio 210); (viii) Waterworks (folio 225); Doncaster, estimate by George Rennie, 1814; Drury Lane Theatre reservoir, letter, 1812; Edinburgh, correspondence and reports concerning water supply, 1815, 1817-1819, 1821 Kent waterworks, letter, 1810; Westminster sewers, letters, 1817; York Buildings Company, letter, 1811.