Minutes, meeting of the Chemistry Sub-Committee Sir William Ramsay in the chair. Committee business including discussion on precautions to take in an air raid, and means of communicating this to the public [includes a list of actions to take]; suggestions for mechanical devices to combat cloud warfare; research on the preparation of toluene from benzene; decision that chemical suggestions should first be considered by Crossley and Thorpe. p12. 19 May 1915