Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 2
... hundreds , perhaps thousands of times : — That all these operations have
been more or less continuous , but unequal in their progress , and during the
whole series the organic life of the earth has undergone a corresponding
alteration .
... hundreds , perhaps thousands of times : — That all these operations have
been more or less continuous , but unequal in their progress , and during the
whole series the organic life of the earth has undergone a corresponding
alteration .
Page 4
Large groups , such as classes and orders , are generally spread over the whole
earth , while smaller ones , such as families and genera , are frequently confined
to one portion , often to a very limited district . 2 . In widely distributed families ...
Large groups , such as classes and orders , are generally spread over the whole
earth , while smaller ones , such as families and genera , are frequently confined
to one portion , often to a very limited district . 2 . In widely distributed families ...
Page 8
... minute twigs and scattered leaves is what we have to place in order , and
determine the true position each originally occupied with regard to the others ,
the whole difficulty of the true Natural System of classification becomes apparent
to us .
... minute twigs and scattered leaves is what we have to place in order , and
determine the true position each originally occupied with regard to the others ,
the whole difficulty of the true Natural System of classification becomes apparent
to us .
Page 9
A country having species , genera , and whole families peculiar to it , will be the
necessary result of its having been isolated for a long period , sufficient for many
series of species to have been created on the type of pre - existing ones , which ...
A country having species , genera , and whole families peculiar to it , will be the
necessary result of its having been isolated for a long period , sufficient for many
series of species to have been created on the type of pre - existing ones , which ...
Page 10
... either on the supposition that the same original emigration peopled tho whole
of the islands with the same species from which differently modified prototypes
were created , or that the islands were successively peopled from each other , but
...
... either on the supposition that the same original emigration peopled tho whole
of the islands with the same species from which differently modified prototypes
were created , or that the islands were successively peopled from each other , but
...
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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 |