The Origin of Species by Means of Natural Selection, Or, The Preservation of Favored Races in the Struggle for Life, Volumes 1-2D. Appleton, 1917 - Evolution |
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Page v
... CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties ...
... CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of Variability - Effects of Habit and the use or disuse of Parts - Correlated Variation - Inheritance - Character of Do- mestic Varieties - Difficulty of distinguishing between Varieties ...
Page 5
... chapter I shall discuss the complex and little known laws of variation . In the five succeeding chapters , the most ... chapter I shall consider the geological succession of organic beings throughout time ; in the twelfth and thirteenth ...
... chapter I shall discuss the complex and little known laws of variation . In the five succeeding chapters , the most ... chapter I shall consider the geological succession of organic beings throughout time ; in the twelfth and thirteenth ...
Page
... CHAPTER XV . RECAPITULATION AND CONCLUSION . Recapitulation of the objections to the theory of Natural Selection -Recapitulation of the general and special circumstances in its favour - Causes of the general belief in the immutability ...
... CHAPTER XV . RECAPITULATION AND CONCLUSION . Recapitulation of the objections to the theory of Natural Selection -Recapitulation of the general and special circumstances in its favour - Causes of the general belief in the immutability ...
Contents
VARIATION UNDER DOMESTICATION | 7 |
CHAPTER II | 51 |
STRUGGLE FOR EXISTENCE | 66 |
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Common terms and phrases
adapted affinity allied species ancient animals appear Archipelago beak become believe belonging birds breeds Cambrian cause characters climate closely allied colour common continent crossed crustaceans degree developed difficulty distinct species domestic doubt eggs embryo Europe existing extinct extremely facts favourable fertilised fertility fish flowers formation formerly forms fossil Fritz Müller Gärtner genera genus geological geological period Glacial period gradations groups of species habits Hence hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner Marsupials migration modified descendants natural selection naturalists nearly occur oceanic islands offspring organisation parent peculiar perfect pigeon pistil plants pollen present probably produced progenitor quadrupeds ranked reciprocal crosses remarked resemblance seeds Silurian slight South America stage stamens sterility structure successive suppose theory tion variability variations varieties vary whilst whole widely different wings