The Foundations of the Origin of Species / Two Essays written in 1842 and 1844

by Charles Darwin

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Contents

1. Introduction
2. Part I. § I. «On Variation under Domestication, and on the Principles of Selection.»
3. Part II. §§ IV. & V. «On the evidence from Geology.»
4. Conclusion
5. Chapter I. On the Variation of Organic Beings Under Domestication; And on the Principles of Selection
6. Chapter II. On the Variation of Organic Beings in a Wild State; On the Natural Means of Selection; And on the Comparison of Domestic Races and True Species
7. Chapter III. On the Variation of Instincts and Other Mental Attributes Under Domestication and in State of Nature; On the Difficulties in This Subject; And on Analogous Difficulties with Respect to Co
8. Chapter IV. On the Number of Intermediate Forms Required on the Theory of Common Descent; And on Their Absence in a Fossil State
9. Chapter V. Gradual Appearance and Disappearance of Species
10. Chapter VI. On the Geographical Distribution of Organic Beings in Past and Present Times
11. Chapter VII. On the Nature of the Affinities and Classification of Organic Beings
12. Chapter VIII. Unity of Type in the Great Classes; And Morphological Structures
13. Chapter IX. Abortive or Rudimentary Organs
14. Chapter X. Recapitulation and Conclusion
15. Conclusion

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