Copy letter from Herbert Rix, to Sir George Gabriel Stokes, Fellow of the Royal Society 'Dear Sir Gabriel. Will you have the goodness (if you approve of the enclosed memorial) to sign your name beneath that of Prof. Huxley [Professor Thomas Henry Huxley] as one of the Past Presidents, and return the memorial to me. Yours truly, Herbert Rix Asst. Sec. RS [Assistant Secretary, Royal Society]'. 6 April 1891