Copy letter from Herbert Rix, to H De La Hooke, Clerk of the London County Council, Spring Gardens, S.W. 'With reference to your letter (4082) of May 24, I have now the pleasure of sending you by hand 25 copies of the first report of our Water Research Committee. I am, Sir, Your obedient Servant Herbert Rix, Asst Sec RS [Assistant Secretary, Royal Secretary]'. 31 May 1892