On the Origin of Species by Means of Natural Selection: Or, The Preservation of Favoured Races in the Struggle for Life |
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Page 7
... Inheritance - Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species - Domestic Pigeons , their Differences and Origin - Principle of ...
... Inheritance - Character of Domestic Varieties - Difficulty of distinguishing between Varieties and Species - Origin of Domestic Varieties from one or more Species - Domestic Pigeons , their Differences and Origin - Principle of ...
Page 11
... inherited at a corresponding age -RUDIMENTARY ORGANS ; their origin explained - Summary 351 CHAPTER XIV ✓ RECAPITULATION AND CONCLUSION Recapitulation of the difficulties on the theory of Natural Selection -Recapitulation of the ...
... inherited at a corresponding age -RUDIMENTARY ORGANS ; their origin explained - Summary 351 CHAPTER XIV ✓ RECAPITULATION AND CONCLUSION Recapitulation of the difficulties on the theory of Natural Selection -Recapitulation of the ...
Page 16
... inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection ...
... inheritance , any selected variety will tend to propagate its new and modified form . This fundamental subject of Natural Selection will be treated at some length in the fourth chapter ; and we shall then see how Natural Selection ...
Page 21
... inheritance ; for had the action of the conditions been direct , if any of the young had varied , all would probably have varied in the same manner . To judge how much , in the case of any variation , we should attribute to the direct ...
... inheritance ; for had the action of the conditions been direct , if any of the young had varied , all would probably have varied in the same manner . To judge how much , in the case of any variation , we should attribute to the direct ...
Page 22
... inherited development of the udders in cows and goats in countries where they are habitually milked , in comparison with the state of these organs in other countries , is another instance of the effect of use . Not a single domestic ...
... inherited development of the udders in cows and goats in countries where they are habitually milked , in comparison with the state of these organs in other countries , is another instance of the effect of use . Not a single domestic ...
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Common terms and phrases
accumulated adapted affinities allied species America analogous ancient animals appear archipelago become bees believe birds breeds cause cells characters cirripedes climate closely allied colour continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo endemic existing exterminated extinct extremely facts favourable fertilised fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hybrids hybrids produced important increase individuals inhabitants inherited insects instance instincts intercrossing intermediate larvæ laws less living males mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally offspring organic organisation origin of species perfect pigeons plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rock-pigeon rudimentary seeds sexual sexual selection Silurian slight sometimes South America sterility structure struggle successive supposed swimbladder tend theory variability variations varieties vary whole widely