Copy letter from Herbert Rix, to Messrs Harrison & Sons 'Dear Sirs, I wrote on October 6 to ask for your a/c [account] sales, but it is not yet to hand. We close the accounts next Wednesday, and I shall be glad therefore to have the account at the earliest possible moment, as time is now very short. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 6 November 1891