Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Sir Joseph [Ernest] Petavel, FRS Informs Sir Joseph [Ernest] Petavel [Director of the National Physical Laboratory] that the following appointments have been made to the General Board and Executive Committee of the National Physical Laboratory: Sir George [Thomas] Beilby on the General Board in place of Sir Arthur Duckham; Professor [John] Norman Collie, Mr. [Sydney Bryan] Donkin, Mr. [Frank Edward?] Smith and Lord Weir on the General Board in place of Mr. Horace [Tabberer] Brown, Mr. J. M. Falkiner, Sir Alfred [Bray] Kempe and Sir Henry [John] Oram; Sir Alfred [Fernandez] Yarrow and Professor [Henry Selby] Hele-Shaw on the General Board representing the Institution of Naval Architects and of Mechanical Engineers respectively; and Professor Collie and Sir Yarrow on the Executive Committee in place of Sir Richard Threlfall and Mr. Roger Smith. 9 December 1921