Copy letter from Herbert Rix, to Professor D E Jones, 70 Lichfield Road, Stafford 'Dear Sir, The Report of the Committee on Colour Vision may be "out of print" in its original form, but it was reprinted in full in our "Proceedings" ['Proceedings of the Royal Society'] (No. 311; price 4/-), and it was also published as a Government Blue-book (which is the cheapest form in which you can get it) by Eyre & Spottiswoode for a few pence. Yours faithfully, H Rix Asst. Sec. R.S. [Assistant Secretary, Royal Society]'. 19 December 1893