Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society to Professor Hugh Longbourne Callendar FRS 'The Chairman of the Physics and Chemistry Committee has asked me to send you the enclosed paper by Mr Bousfield for your opinion, and I am to ask you, if possible, to let us have your report not lated than midday on Thursday as there is a meeting of the Committee in the afternoon of that day. I also send for your information, by direction of the Chairman, the report of the first referee, together with Mr Bousfield's reply to his critic.' 1 December 1914