Autograph Letter Signed, to Professor Wheatstone, King’s College, Somerset House, asking if it would suit him to meet at Captain Beaufort’s “on the subject of the Electrical Observations to be made at the Magnetic Observatories”, adding that Mr. Snow Harris has promised to join the meeting. 2 pp. 7 x 4½ inches, minor blemishes only, with the address leaf. Undated. General Sir Edward Sabine (1788-1883), President of the Royal Society, physicist, soldier and explorer; astronomer to expeditions of John Ross (1818) and William Edward Parry in search of the Northwest Passage (1819-20). Sabine researched terrestrial magnetism. Admiral Sir Francis Beaufort (1774-1857), Hydrographer to the Navy. Charles Wheatstone (1802-1875), scientist and inventor, a major figure in the development of electric telegraphy. Sir William Snow Harris (1791–1867) was an English physician and electrical researcher.