Copy letter from Herbert Rix, to Edwin Bailey Elliott, Fellow of the Royal Society 'Dear Sir, Fellows can purchase vols. [volumes] preceding the last five years at 1/3 the pubd [published] price, if there are a hundred in stock. You could get almost any for 2 or 3 decades past at this reduction. You cannot get a second copy as each comes out at a reduction. It must be five years old. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 6 November 1891