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 173
being as perfect as , or slightly more perfect than , the other inhabitants of the same country with which it has to struggle for existence . And we see that this is the degree of perfection attained under nature . The endemic ...
being as perfect as , or slightly more perfect than , the other inhabitants of the same country with which it has to struggle for existence . And we see that this is the degree of perfection attained under nature . The endemic ...
Page 201
... perfect as that of the hive - bee . Beyond this stage of perfection in architecture , natural selection could not lead ; for the comb of the hive - bee , as far as we can see , is absolutely perfect in economizing wax . Thus , as I ...
... perfect as that of the hive - bee . Beyond this stage of perfection in architecture , natural selection could not lead ; for the comb of the hive - bee , as far as we can see , is absolutely perfect in economizing wax . Thus , as I ...
Page 214
... perfect , or even more than commonly perfect , fertility in a first cross between two distinct species . 66 This case of the Crinum leads me to refer to a most singular fact , namely , that there are individual plants , as with certain ...
... perfect , or even more than commonly perfect , fertility in a first cross between two distinct species . 66 This case of the Crinum leads me to refer to a most singular fact , namely , that there are individual plants , as with certain ...
Contents
VARIATION UNDER DOMESTICATION | 6 |
VARIATION UNDER NATURE | 38 |
STRUGGLE FOR EXISTENCE | 52 |
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Common terms and phrases
accumulated adapted affinities allied species amount analogous ancient animals appear archipelago 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 eggs embryo endemic Europe existing exterminated extinct extremely facts favourable fertility flower formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important increase in number individuals inhabitants inherited insects instance instincts intercrossing land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest occasionally oceanic islands offspring perfect pigeons pistil plants pollen present probably produced progenitor ranked reciprocal crosses remarked resemblance seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder theory tion trees variability variations vary whole widely