
The Foundations of the Origin of Species
- First published
- 1909
- Reading level
- Fairly demanding
- Price
- Free
About the book
"The Foundations of the Origin of Species" by Charles Darwin is a scientific publication written in the early to mid-19th century. This work comprises two essays penned in 1842 and 1844, which lay the groundwork for the theory of evolution through natural selection. It explores the mechanisms of variation in species, the principles guiding selection processes in both domesticated and wild organisms, and the evidence for the descent of species from common ancestors. The opening of "The Foundations of the Origin of Species" introduces readers to Darwin's exploratory thoughts on evolution, beginning with the influences that shaped his perspective on species mutability. The text reflects on Darwin's early notions of evolution, supported by various observations and scientific debates. It discusses the significance of natural selection, variation, and the gradual changes in species over time, contrasting them with man's selective breeding practices. Overall, the beginning sections set up a comprehensive framework that supports Darwin's argument for evolutionary theory, anticipating the more detailed arguments and conclusions to follow throughout the essays.
- Evolution (Biology)
- Natural selection
Updated September 2026. Public domain in the USA. Text and summary from Project Gutenberg eBook #22728.
More free books by Charles Darwin
About Charles DarwinLife and Letters of Charles Darwin — Volume 1
More Letters of Charles Darwin — Volume 1
On the Origin of Species By Means of Natural Selection
The Origin of Species by Means of Natural Selection
The Descent of Man, and Selection in Relation to Sex
The Voyage of the Beagle
The Expression of the Emotions in Man and Animals
The Descent of Man and Selection in Relation to Sex, Vol. I
The Variation of Animals and Plants Under Domestication, Vol. I.
The Variation of Animals and Plants Under Domestication, Volume II (of 2)
The Autobiography of Charles Darwin
Journal of Researches into the Natural History and Geology of the Countries Visited During the Voyage Round the World of H.M.S. Beagle Under the Command of Captain Fitz Roy, R.N.











