Referee's report by Edwin Bailey Elliott, on a paper 'Mathematical contributions to the theory of evolution.— IV. On the probable errors of frequency constants and on the influence of random selection on variation and correlation' by Karl Pearson and Louis Napoleon George Filon Recommended for publication in Philosophical Transactions. He doubts whether he agrees with the general principle that the referees have came to but he understands that there is a danger of the author publishing more work than the Royal Society can reasonably print at length. Subject: Mathematics [Published in Philosophical Transactions A, 1898]. 18 February 1898