Copy letter from Herbert Rix, to Allan Dick 'Dear Sir, Enclosed is a proof of your exhibit's title which please return here at your early convenience. If Messrs Swift & Son intend sending an assistant with your microscrope please let us have his name that we may send an "admit" card to you for him to use. Yrs [Yours] faithfully, Herbert Rix Asst. Sec. RS. [Assistant Secretary, Royal Society]'. 23 April 1891