Letter from Colonel Edward Sabine, 12 Park Place, St James's, to Sir John [William] Lubbock, [Treasurer of the Royal Society] Enclosing further letters in the correspondence between [John F.W.] Herschel, Sabine, [George Biddell] Airy, Lubbock, and [Charles] Wheatstone. This concerns the sub-committee of the Physical Committee. [Enclosures not present.] 14 March 1842