Copy letter from Herbert Rix, to Francis Darwin, Fellow of the Royal Society 'Dear Sir, Thank you for your promise to exhibit on June 17th. Will you fill up and return the enclosed schedule? It will give us a better idea of your requirements for the exhibit. We shall give you a "steady" table. Yrs [Yours] faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 3 June 1891