Copy letter from Robert William Frederick Harrison to Dr B C Hesse, 25 Broad Street, New York 'With reference to the letter from this office dated February 28 I have to inform you that Mr G T Beilby is unable to act as a delegate of the Royal Society to the International Congress of Applied Chemistry and that the President and Council have appointed Professor W H Perkin Sc.D, FRS to act as a delegate in his stead. Professor Perkin's address in "Fairview, Wilbraham Road, Fellowfield, Manchester".' 27 March 1912