Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt], [Royal Society] 'My Lord, May I put in hand Prof. Karl Pearson's plates (estimate £29-10-0). They cannot be done by any cheaper process, & there seems no reason to suppose that they can be cut down in number; at least, we have not written to ask him the question. At present his paper is at a stand still. Yours truly Herbert Rix Asst Sec RS [Assistant Secretary, Royal Society]'. 22 December 1893