Copy letter from Herbert Rix, to Monsieur Aristide Marre, Vaucresson par Rosune du Château por Gamcheo[?], Seine-et-Oise 'Dear Sir, In answer to your letter of the 24th inst. [instant] I regret to say that we cannot be of any use to you. We do not possess any autograph letters of the mathematician Sauss. I am, Dear Sir, your obedient servant Herbert Rix Asst. Sec. RS [Assistant Secretary, Royal Society]'. 28 July 1891