
PREFACE
CONTENTS
CHAPTER I THE PROBLEM OF ADAPTATION
CHAPTER II THE THEORY OF EVOLUTION
CHAPTER III THE THEORY OF EVOLUTION (Continued)
CHAPTER IV DARWIN’S THEORIES OF ARTIFICIAL AND OF NATURAL SELECTION
CHAPTER V THE THEORY OF NATURAL SELECTION (Continued)
CHAPTER VI DARWIN’S THEORY OF SEXUAL SELECTION
CHAPTER VII THE INHERITANCE OF ACQUIRED CHARACTERS AS A FACTOR IN EVOLUTION
CHAPTER VIII CONTINUOUS AND DISCONTINUOUS VARIATION AND HEREDITY
The book opens with a clear‑sighted inquiry into why plants and animals seem perfectly fashioned for the worlds they inhabit. It asks whether the fit between organism and environment is built into life itself or is a pattern imposed from the outside, using everyday analogies that make the puzzle accessible. From the first page, readers are invited to consider how the very materials of living things might be arranged to serve the purpose of survival.
The author walks a careful line between reverence for Darwin’s natural‑selection theory and a healthy skepticism of its unexamined dogma. By emphasizing the value of disciplined speculation, the text shows how bold ideas can spark real experiments while warning against unfalsifiable conjecture. It also highlights the lingering doubts many biologists keep private, revealing a vibrant, ongoing debate within the scientific community.
Listeners will find a thoughtful exploration of the “big problems” of biology, presented with clarity and intellectual honesty. The narrative sets the stage for a deeper look at the mechanisms of adaptation, leaving plenty of questions open for further discovery.
Language
en
Duration
~15 hours (917K characters)
Publisher of text edition
Project Gutenberg
Release date
2020-10-24
Rights
Public domain in the USA.

1866–1945
A pioneer of modern genetics, he showed through fruit-fly experiments that genes are carried on chromosomes. His work helped turn heredity into a precise experimental science and earned him the 1933 Nobel Prize in Physiology or Medicine.
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