Letter from Richard [Bertram] Pilcher, Registrar of the Institute of Chemistry, 30 Russell Square, London, to [Francis Alexander] Towle, Assistant Secretary and Librarian of the Royal Society, Burlington House, Piccadilly 'Dear Mr. Towle, Please accept my apologies for addressing you wrongly, but I feel sure that I have heard people refer to you as "Major Towle". Perhaps it is the first indication of approaching deafness. I shall be very glad if I may be allowed to arrange for taking photographs of the four chemists whom you have mentioned, and I will let you know in good time when I would like to make arrangements for the operation. Yours faithfully, Richard B Pilcher'. 11 April 1924