During the last part of his life the majority of Peirce’s philosophical output concerned semiotic, and he developed his account of signs far beyond the 1903 theory. There seem to be two reasons for this. First, Peirce was geographically and intellectually isolated and his main outlet was correspondence with the English woman, Lady Victoria Welby. Welby wrote on various philosophical topics and shared Peirce’s interests in signs and meaning. This seems to have given Peirce a willing and sympathet