Copy letter from Herbert Rix, to Professor Joseph John Thomson 'Dear Sir, I am directed by Lord Rayleigh to ask whether it is probable that your paper recently presented, the reading of which was postponed yesterday, will be ready for reading by Thursday May 2nd. The paper was in the printers' hands before we heard of the postponement, & I am sending you a proof today. I am, yours faithfully H Rix Asst Sec [Assistant Secretary]'. 12 April 1889