37. On the state of Water and Aëriform matter in cavities found in certain Crystals.Read June 13, 1822.
38. On a new Phenomenon of Electro-Magnetism.March 6, 1823.
39. On the application of Liquids formed by the condensation of Gases, as mechanical Agents.April 17, 1823.
40. On the changes of volume produced in Gases, in different states of density, by Heat.May 1, 1823.
41. On the Corrosion of Copper Sheathing by sea-water; and on methods of preventing this effect, and on their application to ships of war and other ships.Jan. 24, 1824.
42. Additional Experiments and Observations on the application of Electrical Combinations to the preservation of the Copper Sheathing of ships, and to other purposes.June 17, 1824.
43. Further Researches on the preservation of Metals by Electro-chemical means.June 9, 1825.
44. The Bakerian Lecture for 1826.—On the Relation of Electrical and Chemical changes.June 3, 1826.
**** For this memoir, the Royal Society conferred upon him the Royal Medal.
45. On the Phenomena of Volcanoes.March 20, 1828.