Copy letter from Robert William Frederick Harrison, Assistant Secretary of the Royal Society; to Sir Dugald Clerk, Chairman of the Applied Sciences Committee and FRS Reminds Sir Dugald Clerk that a year ago Sir Charles Parsons communicated a paper by Professor [William] M. Thornton, 'The influence of reduced pressure on the electrical ignition of gases'. Informs Sir Clerk that since then the author has sent in a shorter paper which he thinks might take its place. Encloses it now and asks Sir Clerk to ascertain whether this is suitable communication for the Society [not enclosed]. 17 January 1919