Copy letter from Herbert Rix, to Professor Frank Clowes, University College, Nottingham 'Dear Sir, I have the pleasure to inform you that at a meeting of the President and Council of the Royal Society leave was granted to you to republish with due acknowledgement in your forthcoming book on "Gas-Testing" the text and cuts of your papers read before the Royal Society. I am, yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 6 December 1895