Copy letter from Robert William Frederick Harrison to Professor J G Hibben, Princeton University 'The President has asked me to acknowledge your letter of the 2nd instant and to say that he looks forward with great pleasure to seeing you as the representative of Princeton University next July, when the Royal Society purposes celebrating its 250th Anniversary. The President is much obliged to you for your suggestion as to a second delegate, but unfortunately exigencies of space have compelled the Society to restrict their invitations to one delegate from each institution.' 14 March 1912