Copy letter from Robert William Frederick Harrison, to Francis Fox, 28 Victoria Street, S.W. 'Dear Mr Fox, June Soiree I bought your suggestion for a lantern demonstration in the Meeting Room, before the Soiree Exhibits Committee, and the matter was discussed. The Committee thank you most cordially for the offer, but in view of other arrangements that are in progress are obliged to forego the exhibition. I am, faithfully yours, Robt [Robert] Harrison Assistant Secretary R.S. [Royal Society]'. 3 June 1907