Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 10
St . Helena is a similar case of a very ancient island having obtained an entirely
peculiar , though limited , flora . On the other hand , no example is known of an
island which can be proved geologically to be of very recent crigin ( late in the ...
St . Helena is a similar case of a very ancient island having obtained an entirely
peculiar , though limited , flora . On the other hand , no example is known of an
island which can be proved geologically to be of very recent crigin ( late in the ...
Page 11
Our own island is an example of this , its separation from the continent being
geologically very recent , and we have consequently scarcely a species which is
peculiar to it ; while the Alpine range , one of the most recent mountain elevations
...
Our own island is an example of this , its separation from the continent being
geologically very recent , and we have consequently scarcely a species which is
peculiar to it ; while the Alpine range , one of the most recent mountain elevations
...
Page 21
For example , during the Silurian period all the earth was Silurian , and animals
were living and dying , and depositing their remains more or less over the whole
area of the globe , and they were probably ( the species at least ) nearly as varied
...
For example , during the Silurian period all the earth was Silurian , and animals
were living and dying , and depositing their remains more or less over the whole
area of the globe , and they were probably ( the species at least ) nearly as varied
...
Page 29
For example , our own observation must convince us that birds do not go on
increasing every year in a geometrical ratio , as they would do , were there not
some powerful check to their natural increase . Very few birds produce less than
two ...
For example , our own observation must convince us that birds do not go on
increasing every year in a geometrical ratio , as they would do , were there not
some powerful check to their natural increase . Very few birds produce less than
two ...
Page 31
This example strikingly shows us that the procuring a constant supply of
wholesome food is almost the sole condition requisite for ensuring the rapid
increase of a given species , since neither the limited fecundity , nor the
unrestrained attacks ...
This example strikingly shows us that the procuring a constant supply of
wholesome food is almost the sole condition requisite for ensuring the rapid
increase of a given species , since neither the limited fecundity , nor the
unrestrained attacks ...
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Common terms and phrases
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 |