Copy letter from Robert William Frederick Harrison, to Professor [James Peter] Hill, Fellow of the Royal Society It was suggested at the recent Soiree Exhibits Committee that he may be willing to give a short discourse in the Meeting Room on the occasion of the Soiree on 13 May, on the subject of his expedition to South America, to be illustrated with lantern slides. Harrison should be glad to learn as early as possible whether it would be convenient to undertake the demonstration. 21 April 1914