Acknowledgments

Introduction

Journal of Researches

Introduction: First Edition (1839)

Patagonia

Introduction: Second Edition (1845)

Galapagos Archipelago

Darwin's Notebooks

Introduction

Editorial Note

The Notebooks

Darwin and Lamarck: Marginalia

1842 Sketch and 1844 Essay

Introduction

1842 Sketch: On Selection Under Domestication, Natural Selection, and Organic Beings in the Wild State

1844 Essay: Variation of Organic Beings in the Wild State

Darwin's View of the Importance of the 1844 Essay

A Monograph of the Sub-Class Cirripedia (1851)

Introduction

Complemental Males

Darwin Reflects on His Cirripede Research

Natural Selection: The Big Species Book (1856--1858)

Introduction

On the Principle of Divergence

Darwin's Plans for the ``Big Species Book''

Abstract of Darwin's Theory Sent to Asa Gray (1857)

Introduction

Abstract

On the Origin of Species (1859)

Introduction

Darwin's Introduction

The Struggle for Existence

Natural Selection

Difficulties on Theory

Instinct

Conclusion

The Success of On the Origin of Species

Variation of Plants and Animals Under Domestication (1868)

Introduction

Pangenesis

Troubles with Pangenesis

The Descent of Man (second edition, 1874)

Introduction: Moral Faculties

On the Development of the Intellectual and Moral Faculties during Primeval and Civilized Times

Introduction: Sexual Selection

Sexual Selection

Wallace on The Descent of Man

Flowers and Adaptation

Introduction

The Various Contrivances by Which Orchids Are Fertilised by Insects (second edition, 1877)

Concluding Remarks on the Cause of Diversity and of the Perfection of Contrivances

The Effects of Cross and Self-Fertilisation in the Vegetable Kingdom (second edition, 1878) General Remarks

The Different Forms of Flowers in Plants of the Same Species (second edition, 1878)

Lythrum salicaria

The Means by Which Plants May Have Been Rendered Heterostyled

Final Remarks

Conclusions

Autobiography

Introduction

My Several Publications

Appendix 1 Selections from Malthus's An Essay on the Principle of Population

Introduction

Selections

Appendix 2 Alfred Russel Wallace: ``On the Tendency of Varieties to Depart Indefinitely from the Original Type'' (1858)

Introduction

Essay

Darwin's Writings and General Bibliography

Indexes