Copy letter from Robert William Frederick Harrison to Professor J [John] H [Henry] Poynting, Fellow of the Royal Society 'Dear Professor Poynting, I write to acknowledge your card of January 18th, and to say that I will issue summonses for a meeting of the Physics and Chemistry Sectional Committee for Thursday, February 4th, at 2.30pm, in accordance with your request. I will send you a note of the agenda before the Committee meets.' 21 January 1909