On the Origin of Species
On the Origin of Species is about Natural Selection and Survival of the Fittest
Chapter 1
Variation under Domestication →
Chapter 1b
The Influence of Habit →
Chapter 1c
Reverting to the Wild State →
Chapter 1d
The Breeds of the Domestic Pigeon →
Chapter 1e
Selection →
Chapter 1f
Unconscious Verus Methodical Selection →
Chapter 1g
Variation under Domestication →
Chapter 2
Variation Under Nature →
Chapter 2b
Species Versus Variety →
Chapter 2c
Incipient Species →
Chapter 2d
The Principle of Divergence of Character →
Chapter 3
Struggle for Existence →