§1. Darwin, ... [38]
§2. The Followers of Darwin.—Ernst Häckel, ... [45]
§3. Modifications of the Theory.—Moriz Wagner. Wigand, ... [52]
CHAPTER III.
Present State of the Darwinian Theories.
§1. The Theory of Descent, ... [61]
§2. The Theory of Evolution.—Archæology, Ethnography, Philology, ... [77]
§3. The Theory of Selection, ... [100]