Copy letter from Herbert Rix, to the Librarian, Geological Survey Branch, Department of Mines 'Sir, Your letter of March 3rd has this day been received, & will be laid before the Library Committee at their next meeting. I have the honour to be, Sir, your obedient servant, Herbert Rix Asst Sec & Librarian RS [Assistant Secretary and Librarian, Royal Society]'. 20 April 1891