Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 2
... mountain chains have been elevated ; islands have been formed into
continents , and continents submerged till they have become islands ; and these
changes have taken place , not once merely , but perhaps hundreds , perhaps
thousands ...
... mountain chains have been elevated ; islands have been formed into
continents , and continents submerged till they have become islands ; and these
changes have taken place , not once merely , but perhaps hundreds , perhaps
thousands ...
Page 3
It is about ten years since the idea of such a law suggested itself to the writer of
this essay , and he has since taken every opportunity of testing it by all the newly
- ascertained facts with which he has become acquainted , or has been able to ...
It is about ten years since the idea of such a law suggested itself to the writer of
this essay , and he has since taken every opportunity of testing it by all the newly
- ascertained facts with which he has become acquainted , or has been able to ...
Page 6
It is evidently possible that two or three distinct species may have had a common
antitype , and that each of these may again have become the antitypes from
which other closely allied species were created . The effect of this would be , that
so ...
It is evidently possible that two or three distinct species may have had a common
antitype , and that each of these may again have become the antitypes from
which other closely allied species were created . The effect of this would be , that
so ...
Page 9
... as well as many of the earlierformed species , have become extinct , and thus
made the groups appear isolated . If in any case the antitype had an extensive
range , two or more groups of species might have been formed , each varying
from ...
... as well as many of the earlierformed species , have become extinct , and thus
made the groups appear isolated . If in any case the antitype had an extensive
range , two or more groups of species might have been formed , each varying
from ...
Page 11
Peninsula of Malacca , Java , Sumatra and Borneo was probably a continent or
large island at an early epoch , and may have become submerged as the
volcanic ranges of Java and Sumatra were elevated . The organic results we see
in the ...
Peninsula of Malacca , Java , Sumatra and Borneo was probably a continent or
large island at an early epoch , and may have become submerged as the
volcanic ranges of Java and Sumatra were elevated . The organic results we see
in the ...
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abundant action adapted allied animals appear beautiful become believe birds body build butterflies causes Celebes changes character closely colour common comparatively complete concealment consider conspicuous continually direct distinct doubt Edition equally evidence exactly example existence explained facts female flight flowers frequently further genera genus give greater groups habits imitation important increase India individuals inhabiting insects interesting islands Java kind known less limited living male marked materials means mimicry modifications moths natural selection necessary nest never objects observations occur organic original Papilio perfect period phenomena possess present probably produced protection race reason region remarkable render resemble result savage seems seen sexes shown similar species structure supposed tail theory tints tion trees tropical true universe variation varied varieties various whole wings
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Bibliographic information
| Title | Contributions to the Theory of Natural Selection: A Series of Essays Contributions to the Theory of Natural Selection: A Series of Essays, Alfred Russel Wallace Marilee E. Thomas and Robert C. Thomas Science and Related Subjects Collection |
| Author | Alfred Russel Wallace |
| Edition | 2 |
| Publisher | Macmillan and Company, 1870 |
| Original from | Oxford University |
| Digitized | 8 mai 2006 |
| Length | 384 pages |
| Export Citation | BiBTeX EndNote RefMan |