Volume 5. Scientific and miscellaneous papers II XXI Paper on the principles of tools for turning and planing metals (1847) XXII Note respecting the pink projections from the sun’s disc observed during the total solar eclipse observed in 1851 (1852) XXIII Notes respecting lighthouses (1852) XXIV Thoughts on the principles of taxation with reference to a property tax and its exceptions (1852) XXV On the statistics of lighthouses (1853) XXVI Correspondence on cypher writing, with J. H. B. Thwaites (1854) XXVII Submarine navigation (1855) XXVIII On the possible use of the occulting telegraph at Sebastopol (1855) XXIX A method of laying the guns of a battery without exposing the men to the shot of the enemy (1855) XXX Cypher writing (1855) XXXI Analysis of the statistics of the Clearing House during the year 1839 (1856) XXXII On the action of ocean currents in the formation of the strata of the earth (1856) XXXIII Table of the relative frequency of occurrence of the causes of breaking of plate glass windows (1857) XXXIV On tables of the constants of nature and art (1857) XXXV Observations on the discovery in various localities of the remains of human art mixed with the bones of extinct races of animals (1860) XXXVI Contributions to the discussions at the FourthInternational Statistical Congress, London (1860) XXXVII Letter to Dr Farr on the origin of the International Statistical Congresses (1860) XXXVIII Thoughts upon an extension of the franchise (1865) XXXIX Observations on the parallel roads of Glen Roy (1868)