On the Origin of Species by Means of Natural Selection |
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Page 13
... less do we know of the mutual relations of the in- numerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure , I can entertain no doubt ...
... less do we know of the mutual relations of the in- numerable inhabitants of the world during the many past geological epochs in its history . Although much remains obscure , and will long remain obscure , I can entertain no doubt ...
Page 15
... less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter on the copious details which I have col- lected on this curious subject ; but to show how singular the laws are ...
... less water at some particular period of growth , will determine whether or not the plant sets a seed . I cannot here enter on the copious details which I have col- lected on this curious subject ; but to show how singular the laws are ...
Page 17
... less and the bones of the leg more , in propor- tion 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 propor- tion 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 19
... less strange and commoner deviations may be freely admitted to be inheritable . Perhaps the correct way of viewing the whole subject , would be , to look at the inheritance of every character whatever as the rule , and non - inheritance ...
... less strange and commoner deviations may be freely admitted to be inheritable . Perhaps the correct way of viewing the whole subject , would be , to look at the inheritance of every character whatever as the rule , and non - inheritance ...
Page 30
... 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 ...
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Common terms and phrases
accumulated adapted affinities allied species America amount ancient animals appear 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 Europe existing exterminated extinct extremely facts favourable fertility flowers formations forms fossil Gärtner genera genus geological geological period Glacial period gradations greater number groups of species habits Hence hermaphrodites hybrids hybrids produced important individuals inhabitants inherited insects instance instincts intercrossing intermediate land larvæ laws less living look male mammals manner migration modification modified descendants natural selection naturalists nearly nest offspring organic organisation perfect pigeons pistil plants pollen present principle probably produced progenitor ranked reciprocal crosses remarked resemble rudimentary seeds sexual selection Silurian slight South America sterility structure struggle successive suppose swimbladder tend theory tion trees variability variation varieties vary whole widely