Copy letter from Herbert Rix, to Professor George Gabriel Stokes, President of the Royal Society 'Dear Sir, Herewith a letter from Board of Trade, about Light-house Illuminents. I have acknowledged [underlined] receipt. The two Reports did not arrive: I have intimated this in my acknowledgement. I am, Dear Sir, yours obediently, Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 1 October 1888