Part First — The Darwinian Theories
Book I The Purely Scientific Theories
The Scientific Problem,... 23
Chapter I Rise of the Darwinian Theories
§1. Direct Predecessors,... 30
§2. Indirect Preparations,... 33
Chapter II History of the Darwinian Theories
§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
Book II The Philosophic Completions and Consequences of the Darwinian Theories
The Philosophic Problems,... 108
Chapter I The Naturo-Philosophic Supplements of the Darwinian Theories
§1. The Origin of Self-Consciousness and of Free Moral Self-Determination,... 115
§2. The Origin of Sensation and of Consciousness,... 127
§3. The Origin of Life,... 132
§4. The Elements of the World; the Theory of Atoms, and the Mechanical View of the World,... 140