The Origin of Species
By Charles Darwin.
The Origin of Species
Chapter List-
The Origin of SpeciesFree
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Chapter_3Free
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An Historical Sketch of the Progress of Opinion on the Origin of Species, Previously to the Publication of the First Edition of This WorkFree
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IntroductionFree
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The Origin of Species by Means of Natural SelectionFree
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IFree
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Causes of VariabilityFree
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Effects of Habit and of the Use or Disuse of Parts; Correlated Variation; InheritanceFree
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Character of Domestic Varieties; Difficulty of Distinguishing Between Varieties and Species; Origin of Domestic Varieties from One or More SpeciesFree
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Breeds of the Domestic Pigeon, Their Differences and OriginFree
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Principles of Selection Anciently Followed, and Their EffectsFree
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Unconscious SelectionFree
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Circumstances Favourable to Man’s Power of SelectionFree
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IIFree
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Individual DifferencesFree
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Doubtful SpeciesFree
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Wide-Ranging, Much Diffused, and Common Species Vary MostFree
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Species of the Larger Genera in Each Country Vary More Frequently Than the Species of the Smaller GeneraFree
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Many of the Species Included Within the Larger Genera Resemble Varieties in Being Very Closely, but Unequally, Related to Each Other, and in Having Restricted RangesFree
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SummaryFree
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IIIFree
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The Term, Struggle for Existence, Used in a Large SenseFree
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Geometrical Ratio of IncreaseFree
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Nature of the Checks to IncreaseFree
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Complex Relations of All Animals and Plants to Each Other in the Struggle for ExistenceFree
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Struggle for Life Most Severe Between Individuals and Varieties of the Same SpeciesFree
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IVFree
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Sexual SelectionFree
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Illustrations of the Action of Natural Selection, or the Survival of the FittestFree
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On the Intercrossing of IndividualsFree
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Circumstances Favourable for the Production of New Forms Through Natural SelectionFree
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Extinction Caused by Natural SelectionFree
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Divergence of CharacterFree
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The Probable Effects of the Action of Natural Selection Through Divergence of Character and Extinction, on the Descendants of a Common AncestorFree
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On the Degree to Which Organisation Tends to AdvanceFree
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Convergence of CharacterFree
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Summary of ChapterFree
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VFree
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Effects of the Increased Use and Disuse of Parts, as Controlled by Natural SelectionFree
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AcclimatisationFree
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Correlated VariationFree
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Compensation and Economy of GrowthFree
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Multiple, Rudimentary, and Lowly-Organised Structures Are VariableFree
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A Part Developed in Any Species in an Extraordinary Degree or Manner, in Comparison with the Same Part in Allied Species, Tends to Be Highly VariableFree
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Specific Characters More Variable Than Generic CharactersFree
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Secondary Sexual Characters VariableFree
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Distinct Species Present Analogous Variations, So That a Variety of One Species Often Assumes a Character Proper to an Allied Species, or Reverts to Some of the Characters of an Early ProgenitorFree
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SummaryFree
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VIFree
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On the Absence or Rarity of Transitional VarietiesFree
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On the Origin and Transition of Organic Beings with Peculiar Habits and StructureFree
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Organs of Extreme Perfection and ComplicationFree
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Modes of TransitionFree
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Special Difficulties of the Theory of Natural SelectionFree
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Organs of Little Apparent Importance, as Affected by Natural SelectionFree
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Utilitarian Doctrine, How Far True: Beauty, How AcquiredFree
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Summary: The Law of Unity of Type and of the Conditions of Existence Embraced by the Theory of Natural SelectionFree
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VIIFree
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VIIIFree
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Inherited Changes of Habit or Instinct in Domesticated AnimalsFree
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Special InstinctsFree
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Instincts of the CuckooFree
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Slave-Making InstinctFree
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Cell-Making Instinct of the Hive-BeeFree
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Objections to the Theory of Natural Selection as Applied to Instincts: Neuter and Sterile InsectsFree
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SummaryFree
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IXFree
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Degrees of SterilityFree
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Laws Governing the Sterility of First Crosses and of HybridsFree
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Origin and Causes of the Sterility of First Crosses and of HybridsFree
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Reciprocal Dimorphism and TrimorphismFree
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Fertility of Varieties When Crossed, and of Their Mongrel Offspring, Not UniversalFree
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Hybrids and Mongrels Compared, Independently of Their FertilityFree
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Summary of ChapterFree
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XFree
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On the Lapse of Time, as Inferred from the Rate of Deposition and Extent of DenudationFree
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On the Poorness of Palaeontological CollectionsFree
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On the Absence of Numerous Intermediate Varieties in Any Single FormationFree
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On the Sudden Appearance of Whole Groups of Allied SpeciesFree
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On the Sudden Appearance of Groups of Allied Species in the Lowest Known Fossiliferous StrataFree
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XIFree
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On ExtinctionFree
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On the Forms of Life Changing Almost Simultaneously Throughout the WorldFree
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On the Affinities of Extinct Species to Each Other, and to Living FormsFree
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On the State of Development of Ancient Compared with Living FormsFree
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On the Succession of the Same Types Within the Same Areas, During the Later Tertiary PeriodsFree
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Summary of the Preceding and Present ChaptersFree
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XIIFree
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Single Centres of Supposed CreationFree
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Means of DispersalFree
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Dispersal During the Glacial PeriodFree
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Alternate Glacial Periods in the North and SouthFree
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XIIIFree
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Freshwater ProductionsFree
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On the Inhabitants of Oceanic IslandsFree
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Absence of Batrachians and Terrestrial Mammals on Oceanic IslandsFree
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On the Relations of the Inhabitants of Islands to Those of the Nearest MainlandFree
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Summary of the Last and Present ChaptersFree
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XIVFree
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Analogical ResemblancesFree
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On the Nature of the Affinities Connecting Organic BeingsFree
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MorphologyFree
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Development and EmbryologyFree
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Rudimentary, Atrophied, and Aborted OrgansFree
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SummaryFree
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XVFree
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Glossary of the Principal Scientific Terms Used in the Present VolumeFree