Copy letter from Herbert Rix, to Professor John William Mallet, Fellow of the Royal Society, University of Virginia 'Dear Sir, You instructed us to send separate copies of your paper in the "Phil. Trans" ['Philosophical Transactions of the Royal Society'] by the Smithsonian Institution. Messrs Wesley & Son, the agents of the Smithsonian in London, decline to receive and forward them without permission from the Secretary, Prof. S.P. Langley [Professor Samuel Pierpont]. Please instruct us. Yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 8 November 1889