Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary of the Aeronautical Research Committee, National Physical Laboratory. Informs that the a room will be available for the Aerodynamics Sub-Committee in July 3rd 2.30; as all the rooms on the morning of the 17th July will be in use, suggests an afternoon slot for the Engine Sub-committee and replies that the meeting of the Materials and Chemistry Sub-Committee has been cancelled. 12 June 1923