Copy letter from Herbert Rix, to Messrs Travers & Sons, 119 Cannon Street, E.C. 'Dear Sirs, The paper to which you refer is entitled: "Sugar as a Food in the production of Muscular Work", and is published in the "Proceedings of the Royal Society" No. 330, price 2/6, which may be purchased of Harrison & Sons, 45 St. Martin's Lane. Yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 9 July 1894