Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to Prof. [Edward Victor] Appleton, FRS In relation to Prof. [Edward Victor] Appleton's enquiry, states that only routine correspondence can be given, which may not contain the needed information. Asks for Appleton to contact the current chairman, Dr. [Frank Edward] Smith. Mentions that a previous technical enquiry by Mr. O. F.Brown was answered by Sir Henry Jackson, in consultation of the Chairman. 2 March 1928