About a year subsequent to the appearance of my paper on the Grimsby Trawl Fishery my attention was directed to certain arithmetical errors in the table on pp. 406 and 407 (pp. 70 and 71 of the Reprint). These errors are in truth, considerable, though fortunately not of a nature to affect the arguments brought forward in the text, as will appear to such of my readers as may be at pains to compare the revised edition with the original.