Letter from G.W.O. Howe, City and Guilds (Engineering) College, Exhibition Road, London, S.W, to The Assistant Secretary, The Royal Society, Burlington House, London, W Infroms that the diagrams accompanying his paper on "High Frequency Resistance of Multiply Stranded Isolated Ions" were only provisional and that finished diagrams for reproduction would be sent on application. Sending the diagrams despite not having received the application [enclosure not present]. 23 May 1917