Copy letter from Herbert Rix, to Professor William Edward Ayrton, Fellow of the Royal Society Rix explains that they always put their authors copies in wrappers, on which the title of the paper is printed. A title page or anything special in the form of a wrapper would have to be undertaken by arrangement with Messrs Harrison & Sons, which Ayrton is free to do, providing the page numbers are not altered. He will look in to the matter of blocks for Mr Joseph Norman Lockyer. 11 April 1891