Copy letter from Herbert Rix, to Lord Rayleigh [John William Strutt] Encloses a letter from the Reverend Frederick John Smith which is answer to a letter that Rix wrote at Strutt's instance [not attached], with a view to ascertaining whether it was advisable to wait for the results of further experiments or to reconsider the vote upon 'Part I', which was deferred by the Committee in 1889, until 'Part II' should arrive. 21 September 1892