Note 1 — Chapter I · INTRODUCTORY
Reading edition
These sayings of Kant and of Du Bois, and others like to them, have been the text of many discourses: see, for instance, Stallo’s Concepts, p. 21, 1882; Höber, Biol. Centralbl. XIX, p. 284, 1890, etc. Cf. also Jellett, Rep. Brit. Ass. 1874, p. 1.