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 43
... seen great surprise expressed in horticultural works at the wonderful skill of gardeners , in having produced such splendid results from such poor materials ; but the art has been simple , and , as far as the final result is concerned ...
... seen great surprise expressed in horticultural works at the wonderful skill of gardeners , in having produced such splendid results from such poor materials ; but the art has been simple , and , as far as the final result is concerned ...
Page 46
... seen it gravely remarked , that it was most fortunate that the strawberry began to vary just when gardeners began to attend closely to this plant . No doubt the strawberry had always varied since it was cultivated , but the slight ...
... seen it gravely remarked , that it was most fortunate that the strawberry began to vary just when gardeners began to attend closely to this plant . No doubt the strawberry had always varied since it was cultivated , but the slight ...
Page 56
... seen that I look at the term species , as one arbitrarily given for the sake of con- venience to a set of individuals closely resembling each other , and that it does not essentially differ from the term variety , which is given to less ...
... seen that I look at the term species , as one arbitrarily given for the sake of con- venience to a set of individuals closely resembling each other , and that it does not essentially differ from the term variety , which is given to less ...
Page 60
... seen that there is no infallible criterion by which to distinguish species and well - marked varieties ; and in those cases in which intermediate links have not been found between doubtful forms , naturalists are com- pelled to come to ...
... seen that there is no infallible criterion by which to distinguish species and well - marked varieties ; and in those cases in which intermediate links have not been found between doubtful forms , naturalists are com- pelled to come to ...
Page 62
... seen that it is the most flourishing or dominant species of the larger genera within each class which on an average vary most and varieties , as we shall hereafter see , tend to become converted into new and distinct species . The ...
... seen that it is the most flourishing or dominant species of the larger genera within each class which on an average vary most and varieties , as we shall hereafter see , tend to become converted into new and distinct species . The ...
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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