Letter from Gilbert [Thomas] Walker, India Meteorological Department, Simla, to Sir Joseph Larmor, Secretary of the Royal Society, Burlington House, London Encloses an article by Dr. G.C. Simpson, a continuation of his previous paper on the electricity of rain and thunderstorms. Believes that the further observations supporting the unexpected results would be of interest to the Royal Society. Informs that Dr. Simpson will be in England until mid-February. 2 December 1909