Letter from Charles Thomson Rees Wilson, on a paper 'On the electricity of rain and its origin in thunderstroms' by George Clarke Simpson to Arthur Schuster Sectional committee: Physics and chemistry Letter to Arthur Schuster (a fellow referee of this paper), expressing that Schuster's observations on the final paragraph of the paper reflect his and that he agrees with the proposed modifications. He has not made any changes anywhere else. [Published in Philosophical Transactions A, 1909]. 9 March 1909