On the Origin of Species by Means of Natural Selection: Or the Preservation of Favored Races in the Struggle for Life1859 |
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Page 11
... less and the bones of the leg more , in proportion to the whole skeleton , than do the same bones in the wild - duck ; and I presume that this change may be safely attributed to the domestic duck flying much less , and walking more ...
... less and the bones of the leg more , in proportion to the whole skeleton , than do the same bones in the wild - duck ; and I presume that this change may be safely attributed to the domestic duck flying much less , and walking more ...
Page 13
... less strange and commoner deviations may be freely ad- mitted to be inheritable . Perhaps the correct way of viewing the whole subject , would be , to look at the in- heritance of every character whatever as the rule , and non ...
... less strange and commoner deviations may be freely ad- mitted to be inheritable . Perhaps the correct way of viewing the whole subject , would be , to look at the in- heritance of every character whatever as the rule , and non ...
Page 22
... less distinct breeds might have been specified . In the skeletons of the several breeds , the develop- ment of the bones of the face in length and breadth and curvature differs enormously . The shape , as well as the breadth and length ...
... less distinct breeds might have been specified . In the skeletons of the several breeds , the develop- ment of the bones of the face in length and breadth and curvature differs enormously . The shape , as well as the breadth and length ...
Page 26
... less and less , as in each suc- ceeding generation there will be less of the foreign blood ; but when there has been no cross with a distinct breed , and there is a tendency in both parents to revert to a character , which has been lost ...
... less and less , as in each suc- ceeding generation there will be less of the foreign blood ; but when there has been no cross with a distinct breed , and there is a tendency in both parents to revert to a character , which has been lost ...
Page 28
... less than 20,000 pigeons were taken with the court . " The monarchs of Iran and Turan sent him some very rare birds ; " and , continues the courtly historian , “ His Majesty by crossing the breeds , which method was never practised ...
... less than 20,000 pigeons were taken with the court . " The monarchs of Iran and Turan sent him some very rare birds ; " and , continues the courtly historian , “ His Majesty by crossing the breeds , which method was never practised ...
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Common terms and phrases
adapted affinities allied species America amount analogous ancient animals become bees believe birds breeds cause cells characters cirripedes climate closely allied colour common parent continuous crossed crustaceans degree difficulty distinct species divergence domestic doubt embryo Europe existing exterminated extinct extremely facts favourable Fcap fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites History hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ less living male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring perfect pigeons plants pollen Post 8vo present principle probably produced progenitor racters ranked reciprocal crosses remarked resemble Second Edition seeds sexual selection Silurian slight South America sterility structure struggle successive suppose theory Third Edition tion variability variation varieties vary Vols whole widely Woodcuts