On the Origin of Species (1st edition, 1859)

Full Title: On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life

by Charles Darwin

• Preface (to the second edition)
• Introduction
• Chapter 1: Variation Under Domestication
• Chapter 2: Variation Under Nature
• Chapter 3: Struggle for Existence
• Chapter 4: Natural Selection
• Chapter 5: Laws of Variation
• Chapter 6: Difficulties on Theory
• Chapter 7: Instinct
• Chapter 8: Hybridism
• Chapter 9: On the Imperfection of the Geological Record
• Chapter 10: On The Geological Succession of Organic Beings
• Chapter 11: Geographical Distribution
• Chapter 12: Geographical Distribution—continued
• Chapter 13: Mutual Affinities of Organic Beings: Morphology: Embryology: Rudimentary Organs
• Chapter 14: Recapitulation and Conclusion
• Glossary
• Diagram