Copy Letter from Robert William Frederick Harrison to Evelyn Shaw, 54 Victoria Street, SW 'Dear Sir, With reference to your letter of the 15th instant, I have to say that the paper by Mr Thomas Royds on "The constitution of the electric spark", read on February 13th last, is going forward for publication in the Philosophical Transactions [of the Royal Society]. The paper is now in the press and will probably be issued in the course of the next month.' 20 May 1908