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 13
... nearly finished ; but as it will take me two or three more years to complete it , and as my health is far from strong , I have been urged to publish this Abstract . I have more especially been induced to do this , as Mr. Wallace , who ...
... nearly finished ; but as it will take me two or three more years to complete it , and as my health is far from strong , I have been urged to publish this Abstract . I have more especially been induced to do this , as Mr. Wallace , who ...
Page 22
... nearly all the individuals exposed to certain , conditions are affected in the same way , the change at first appears to be directly due to such conditions ; but in some cases it can be shown that quite opposite conditions produce ...
... nearly all the individuals exposed to certain , conditions are affected in the same way , the change at first appears to be directly due to such conditions ; but in some cases it can be shown that quite opposite conditions produce ...
Page 24
... nearly mature ; peculiarities in the silkworm are known to appear at the corresponding caterpillar or cocoon stage . But hereditary diseases and some other facts make me believe that the rule has a wider extension , and that when there ...
... nearly mature ; peculiarities in the silkworm are known to appear at the corresponding caterpillar or cocoon stage . But hereditary diseases and some other facts make me believe that the rule has a wider extension , and that when there ...
Page 25
... nearly perfect reversion had ensued . It would be quite necessary , in order to prevent the effects of intercrossing , that only a single variety should be turned loose in its new home . Nevertheless , as our varieties certainly do ...
... nearly perfect reversion had ensued . It would be quite necessary , in order to prevent the effects of intercrossing , that only a single variety should be turned loose in its new home . Nevertheless , as our varieties certainly do ...
Page 36
... nearly all the breeders of the various domestic animals and the cultivators of plants , with whom I have conversed , or whose treatises I have read , are firmly convinced that the several breeds to which each has attended , are ...
... nearly all the breeders of the various domestic animals and the cultivators of plants , with whom I have conversed , or whose treatises I have read , are firmly convinced that the several breeds to which each has attended , are ...
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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