On the Origin of Species by Means of Natural Selection, Or The Preservation of Favoured Races in the Struggle for LifeIt took Charles Darwin more than twenty years to publish this book, in part because he realized that it would ignite a firestorm of controversy. The Origin of Species first appeared in 1859, and it remains a continuing source of conflict to this day. Even among those who reject its ideas, however, the work's impact is undeniable. In science, philosophy, and theology, this is a book that changed the world. In addition to its status as the focus of a dramatic turning point in scientific thought, On the Origin of Species stands as a remarkably readable study. Carefully reasoned and well-documented in its arguments, the work offers coherent views of natural selection, adaptation, the struggle for existence, survival of the fittest, and other concepts that form the foundation of modern evolutionary theory.--Amazon.com. |
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Page v
... VARIATION UNDER NATURE . - Variability Individual differences Doubtful species Wide ranging , much diffused , and common species vary most - Spe- cies of the larger genera in any country vary more than the species of the smaller genera ...
... VARIATION UNDER NATURE . - Variability Individual differences Doubtful species Wide ranging , much diffused , and common species vary most - Spe- cies of the larger genera in any country vary more than the species of the smaller genera ...
Page 3
... variation . In one very limited sense , as we shall hereafter see , this may be true ; but it is pre- posterous to attribute to mere external conditions , the structure , for instance , of the woodpecker , with its feet , tail , beak ...
... variation . In one very limited sense , as we shall hereafter see , this may be true ; but it is pre- posterous to attribute to mere external conditions , the structure , for instance , of the woodpecker , with its feet , tail , beak ...
Page 4
... variation under domestication , afforded the best and safest clue . I may venture to express my conviction of the high value of such studies , although they have been very commonly neglected by naturalists . From these considerations ...
... variation under domestication , afforded the best and safest clue . I may venture to express my conviction of the high value of such studies , although they have been very commonly neglected by naturalists . From these considerations ...
Page 5
... variation and of corre- lation of growth . In the four succeeding chapters , the most apparent and gravest difficulties on the theory will be given : namely , first , the difficulties of transi- tions , or in understanding how a simple ...
... variation and of corre- lation of growth . In the four succeeding chapters , the most apparent and gravest difficulties on the theory will be given : namely , first , the difficulties of transi- tions , or in understanding how a simple ...
Page 6
... descendants of that species . Furthermore , I am con- vinced that Natural Selection has been the main but not exclusive means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of Variability - 6 INTRODUCTION .
... descendants of that species . Furthermore , I am con- vinced that Natural Selection has been the main but not exclusive means of modification . CHAPTER I. VARIATION UNDER DOMESTICATION . Causes of Variability - 6 INTRODUCTION .
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Common terms and phrases
adapted affinities allied species America analogous variations ancient animals appear become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distant distinct species divergence domestic doubt embryo existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period greater number groups of species habits Hence hermaphrodites horse hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ legs less living males mammals manner Marsupials migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organisation perfect pigeons pistil plants pollen probably produced progenitor quagga racters ranked reciprocal crosses remarked resemble rock-pigeon rudimentary organs secondary sexual seeds sexual selection Silurian slight sometimes South America sterility striped structure struggle successive supposed tendency theory tion variability varieties vary whole widely