 On December 2, 1910, Jones delivered a paper to the Cambridge Moral Sciences Club, titled “Categorical Propositions and the Law of Identity” (later published, under a different title, as Jones 1911a). Russell responded at a meeting three months later, on March 10, 1911, delivering “Knowledge by Acquaintance and Knowledge by Description”. While Russell did not acknowledge being influenced by Jones in his earlier work, nor did he compare her view to Frege’s, it is significant that he took her work seriously enough to merit a public response, one that would be recorded in one of his most influential papers.