Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Admiral Sir Henry [Bradwardine] Jackson, FRS, GCBE, ECVO 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 appointed Professor Admiral Sir Henry Jackson, FRS, GCBE, ECVO, to serve on the General Board of the National Physical Laboratory for a term ending in December 1925, and also appointed as a member of the Executive Committee of the Laboratory, a term ending in December 1922. 13 December 1919