Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Richard Threlfall, FRS Advises that at the meeting of the Council of the Royal Society on the 11 December, the President [Sir Joseph John Thomson, PRS] and the Council of the Royal Society elected Sir Richard Threlfall, FRS, to the Executive Committee of the National Physical Laboratory, for a term ending in December 1922. 15 December 1919