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 39
... sometimes amongst closely allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in separating some very distinct variety , and ...
... sometimes amongst closely allied sub - breeds . And when a cross has been made , the closest selection is far more indispensable even than in ordinary cases . If selection consisted merely in separating some very distinct variety , and ...
Page 40
... sometimes cross their dogs with wild canine animals , to improve the breed , and they formerly did so , as is attested by passages in Pliny . The savages in South Africa match their draught cattle by colour , as do some of the Esquimaux ...
... sometimes cross their dogs with wild canine animals , to improve the breed , and they formerly did so , as is attested by passages in Pliny . The savages in South Africa match their draught cattle by colour , as do some of the Esquimaux ...
Page 45
... sometimes been noticed - namely , that we know nothing about the origin or history of any of our domestic breeds . ] But , in fact , a breed , like a dialect of a language , can hardly be s said to have had a definite origin . A man ...
... sometimes been noticed - namely , that we know nothing about the origin or history of any of our domestic breeds . ] But , in fact , a breed , like a dialect of a language , can hardly be s said to have had a definite origin . A man ...
Page 47
... sometimes see are almost always imported from some other country . Although I do not doubt that some domestic animals vary less than others , yet the rarity or absence of distinct breeds of the cat , the donkey , peacock , goose , & c ...
... sometimes see are almost always imported from some other country . Although I do not doubt that some domestic animals vary less than others , yet the rarity or absence of distinct breeds of the cat , the donkey , peacock , goose , & c ...
Page 50
... sometimes vary in the individuals of the same species . I am convinced that the most experienced naturalist would be surprised at the number of the cases of variability , even in important parts of structure , which he could collect 50 ...
... sometimes vary in the individuals of the same species . I am convinced that the most experienced naturalist would be surprised at the number of the cases of variability , even in important parts of structure , which he could collect 50 ...
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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