Copy letter from Lord Northampton [Spencer Joshua Alwyne Compton] President of the Royal Society; to the Right Honourable, the Chancellor of the Exchequer [Francis Thornhill Baring] Regarding the proposal for a magnetic survey of British Possessions in North America. States it has the strong approval of Major [Edward] Sabine, Sir John Herchal, Prof. [George] Peacock, the Dean of Ely. The proposal also has the recommendation of the Physical Committee of the Royal Society. Lord Northampton [Spencer Joshua Alwyne Compton] states he is not in London but will have Sir John Lubbock and Major Sabine to visit and discuss the facilities, advantage of the current time and expenses. 11 January 1841