Copy letter from Herbert Rix, to Herr Theodor Fischer, Buchhandlung Cassel 'Dear Sir, I have paid into the post-office here £1-8-0 in settlement of the enclosed account, which please receipt [underlined] and return [underlined]. I know no nearer address than "Herr Theodor Fischer - Cassel". I trust the money order will reach you safely. I am, yours faithfully, Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 14 July 1888