Book

The Origin of Species by Means of Natural Selection

by Charles Darwin (1809–1882)

19 chapters, about 207,000 words. The text is in the public domain in the United States and comes from Project Gutenberg.

Chapters

1. BY MEANS OF NATURAL SELECTION, 3,700 words
2. INTRODUCTION 1,100 words
3. INTRODUCTION. 1,600 words
4. CHAPTER I. VARIATION UNDER DOMESTICATION. 12,400 words
5. CHAPTER II. VARIATION UNDER NATURE. 6,500 words
6. CHAPTER III. STRUGGLE FOR EXISTENCE. 6,300 words
7. CHAPTER IV. NATURAL SELECTION; OR THE SURVIVAL OF THE FITTEST. 19,900 words
8. CHAPTER V. LAWS OF VARIATION. 12,000 words
9. CHAPTER VI. DIFFICULTIES OF THE THEORY. 15,700 words
10. CHAPTER VII. MISCELLANEOUS OBJECTIONS TO THE THEORY OF NATURAL SELECTION. 16,700 words
11. CHAPTER VIII. INSTINCT. 13,700 words
12. CHAPTER IX. HYBRIDISM. 13,000 words
13. CHAPTER X. ON THE IMPERFECTION OF THE GEOLOGICAL RECORD. 11,600 words
14. CHAPTER XI. ON THE GEOLOGICAL SUCCESSION OF ORGANIC BEINGS. 11,400 words
15. CHAPTER XII. GEOGRAPHICAL DISTRIBUTION. 12,200 words
16. CHAPTER XIII. GEOGRAPHICAL DISTRIBUTION—_continued_. 27,100 words
17. CHAPTER XV. RECAPITULATION AND CONCLUSION. 16,200 words
18. INDEX. 1,000 words
19. Conclusion, general, 421. 5,300 words

Ideas discussed in this book

• Acorn
• Embryo
• Fossil
• Natural selection
• Species
• Struggle for existence
• Variable (mathematics)

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