Copy letter from Robert William Frederick Harrison, to Dr E S Salmon, Charlton House, Kew Green 'Dear Sir, The Proofs of your Paper are safely to hand, with the short footnote you wish added. The words "E.S. Salmon, delt." shall be inserted at foot of the plate. I am, Dear Sir, Faithfully yours Robt Harrison Asst. Sec. R. S. [Assistant Secretary, Royal Society]'. 13 July 1905