Copy letter from Herbert Rix, to Sir Lyon Playfair, [Fellow of the Royal Society] 'Stokes Portrait Fd [Fund] Dear Sir Lyon, Sir Henry Roscoe thought we shd [should] make a further appeal, as we have not yet quite enough money, & I wrote the accompanying letters for your signature last August. I found, however, that you were away. If you will now sign them, we will alter the date, and they shall be sent to some of the Fellows who have not yet responded. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 11 November 1891