Copy letter from Herbert Rix, to Messrs W B Keen & Company, Church Court, Old Jewry, E.C. 'Dear Sirs, It is very advisable that you should proceed with recovery of income tax in time to include it in the forthcoming balance, as our funds are rather low. I am, yours truly, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 18 July 1894