Page 7 of 664

Table of Contents

Cover
Title page(p. 1)
Copyright(p. 2)
Table of Contents(pp. 3-8)
Epigraph(p. 9)
An Historical Sketch of the Progress of Opinion on the Origin of Species, Previously to the Publication of the First Edition of This Work(pp. 10-20)
Introduction(pp. 21-25)
I(p. 26)
Causes of Variability(pp. 27-30)
Effects of Habit and of the Use or Disuse of Parts; Correlated Variation; Inheritance(pp. 31-35)
Character of Domestic Varieties; Difficulty of Distinguishing Between Varieties and Species; Origin of Domestic Varieties from One or More Species(pp. 36-40)
Breeds of the Domestic Pigeon, Their Differences and Origin(pp. 41-48)
Principles of Selection Anciently Followed, and Their Effects(pp. 49-53)
Unconscious Selection(pp. 54-59)
Circumstances Favourable to Man’s Power of Selection(pp. 60-63)
II(p. 64)
Individual Differences(pp. 65-67)
Doubtful Species(pp. 68-76)
Wide-Ranging, Much Diffused, and Common Species Vary Most(pp. 77-78)
Species of the Larger Genera in Each Country Vary More Frequently Than the Species of the Smaller Genera(pp. 79-81)
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 Ranges(pp. 82-84)
Summary(pp. 85-86)
III(p. 87)
The Term, Struggle for Existence, Used in a Large Sense(p. 88)
Geometrical Ratio of Increase(pp. 89-92)
Nature of the Checks to Increase(pp. 93-96)
Complex Relations of All Animals and Plants to Each Other in the Struggle for Existence(pp. 97-101)
Struggle for Life Most Severe Between Individuals and Varieties of the Same Species(pp. 102-106)
IV(p. 107)
Sexual Selection(pp. 108-110)
Illustrations of the Action of Natural Selection, or the Survival of the Fittest(pp. 111-119)
On the Intercrossing of Individuals(pp. 120-124)
Circumstances Favourable for the Production of New Forms Through Natural Selection(pp. 125-132)
Extinction Caused by Natural Selection(pp. 133-134)
Divergence of Character(pp. 135-139)
The Probable Effects of the Action of Natural Selection Through Divergence of Character and Extinction, on the Descendants of a Common Ancestor(pp. 140-149)
On the Degree to Which Organisation Tends to Advance(pp. 150-154)
Convergence of Character(pp. 155-157)
Summary of Chapter(pp. 158-170)
V(p. 171)
Effects of the Increased Use and Disuse of Parts, as Controlled by Natural Selection(pp. 172-177)
Acclimatisation(pp. 178-181)
Correlated Variation(pp. 182-185)
Compensation and Economy of Growth(pp. 186-187)
Multiple, Rudimentary, and Lowly-Organised Structures Are Variable(p. 188)
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 Variable(pp. 189-192)
Specific Characters More Variable Than Generic Characters(pp. 193-194)
Secondary Sexual Characters Variable(pp. 195-197)
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 Progenitor(pp. 198-205)
Summary(pp. 206-210)
VI(p. 211)
On the Absence or Rarity of Transitional Varieties(pp. 212-218)
On the Origin and Transition of Organic Beings with Peculiar Habits and Structure(pp. 219-226)
Organs of Extreme Perfection and Complication(pp. 227-231)
Modes of Transition(pp. 232-235)
Special Difficulties of the Theory of Natural Selection(pp. 236-244)
Organs of Little Apparent Importance, as Affected by Natural Selection(pp. 245-248)
Utilitarian Doctrine, How Far True: Beauty, How Acquired(pp. 249-254)
Summary: The Law of Unity of Type and of the Conditions of Existence Embraced by the Theory of Natural Selection(pp. 255-259)
VII(pp. 260-317)
VIII(p. 318)
Inherited Changes of Habit or Instinct in Domesticated Animals(pp. 319-322)
Special Instincts(p. 323)
Instincts of the Cuckoo(pp. 324-329)
Slave-Making Instinct(pp. 330-334)
Cell-Making Instinct of the Hive-Bee(pp. 335-345)
Objections to the Theory of Natural Selection as Applied to Instincts: Neuter and Sterile Insects(pp. 346-353)
Summary(pp. 354-360)
IX(p. 361)
Degrees of Sterility(pp. 362-368)
Laws Governing the Sterility of First Crosses and of Hybrids(pp. 369-376)
Origin and Causes of the Sterility of First Crosses and of Hybrids(pp. 377-384)
Reciprocal Dimorphism and Trimorphism(pp. 385-389)
Fertility of Varieties When Crossed, and of Their Mongrel Offspring, Not Universal(pp. 390-395)
Hybrids and Mongrels Compared, Independently of Their Fertility(pp. 396-399)
Summary of Chapter(pp. 400-403)
X(p. 404)
On the Lapse of Time, as Inferred from the Rate of Deposition and Extent of Denudation(pp. 405-409)
On the Poorness of Palaeontological Collections(pp. 410-416)
On the Absence of Numerous Intermediate Varieties in Any Single Formation(pp. 417-427)
On the Sudden Appearance of Whole Groups of Allied Species(pp. 428-433)
On the Sudden Appearance of Groups of Allied Species in the Lowest Known Fossiliferous Strata(pp. 434-441)
XI(p. 442)
On Extinction(pp. 443-447)
On the Forms of Life Changing Almost Simultaneously Throughout the World(pp. 448-452)
On the Affinities of Extinct Species to Each Other, and to Living Forms(pp. 453-460)
On the State of Development of Ancient Compared with Living Forms(pp. 461-465)
On the Succession of the Same Types Within the Same Areas, During the Later Tertiary Periods(pp. 466-468)
Summary of the Preceding and Present Chapters(pp. 469-476)
XII(p. 477)
Single Centres of Supposed Creation(pp. 478-481)
Means of Dispersal(pp. 482-491)
Dispersal During the Glacial Period(pp. 492-498)
Alternate Glacial Periods in the North and South(pp. 499-515)
XIII(p. 516)
Freshwater Productions(pp. 517-522)
On the Inhabitants of Oceanic Islands(pp. 523-526)
Absence of Batrachians and Terrestrial Mammals on Oceanic Islands(pp. 527-531)
On the Relations of the Inhabitants of Islands to Those of the Nearest Mainland(pp. 532-539)
Summary of the Last and Present Chapters(pp. 540-543)
XIV(p. 544)
Analogical Resemblances(pp. 545-550)
On the Nature of the Affinities Connecting Organic Beings(pp. 551-555)
Morphology(pp. 556-561)
Development and Embryology(pp. 562-576)
Rudimentary, Atrophied, and Aborted Organs(pp. 577-585)
Summary(pp. 586-602)
XV(pp. 603-641)
Glossary of the Principal Scientific Terms Used in the Present Volume(pp. 642-663)
Colophon(p. 664)
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