Copy letter from James Hopwood Jeans, Secretary of the Royal Society; to Colonel [Henry George] Lyons, Chairman of the Gassiot Committee and FRS Encloses a copy of a letter which has been forwarded to the various bodies who nominate members to the National Committee for Geodesy & Geophysics [not enclosed]. [Memorandum attached indicating that this was also sent to Sir Frank Watson Dyson and Professor Ernest William Hobson.] 2 June 1921