Copy letter from Robert William Frederick Harrison, to R W Dana, Secretary, Institution of Naval Architects, 5 Adelphie Terrace, W.C. Is able to answer Dana's letter of 4 December; Sir Nathaniel Barnaby retires by rotation this year from both the Executive Committee and the General Board of the National Physical Laboratory, and by the constitution of the Laboratory no retiring member of either body is eligible for re-appointment until at least one year has elapsed since the date of his retirement. 10 December 1901