Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 3
... very difficult of explanation , and in attempting to give one , must allow
ourselves to call into our service geological changes which it is highly probable
may have occurred , though we have no direct evidence of their individual
operation .
... very difficult of explanation , and in attempting to give one , must allow
ourselves to call into our service geological changes which it is highly probable
may have occurred , though we have no direct evidence of their individual
operation .
Page 12
Fishes give evidence of a similar kind : each great river has its peculiar genera ,
and in more extensive genera its groups of closely allied species . But it is the
same throughout Nature ; every class and order of animals will contribute similar
...
Fishes give evidence of a similar kind : each great river has its peculiar genera ,
and in more extensive genera its groups of closely allied species . But it is the
same throughout Nature ; every class and order of animals will contribute similar
...
Page 78
Here we have probably the cause of their immunity from attack , since there is a
great deal of evidence to show that certain insects are so disgusting to birds that
they will under no circumstances touch them . Mr . Stainton has observed that a ...
Here we have probably the cause of their immunity from attack , since there is a
great deal of evidence to show that certain insects are so disgusting to birds that
they will under no circumstances touch them . Mr . Stainton has observed that a ...
Page 79
In the case of the Heliconidæ , however , we have some direct evidence to the
same effect . In the Brazilian forests there are great numbers of insectivorous
birds — as jacamars , trogons , and puffbirds — which catch insects on the wing ,
and ...
In the case of the Heliconidæ , however , we have some direct evidence to the
same effect . In the Brazilian forests there are great numbers of insectivorous
birds — as jacamars , trogons , and puffbirds — which catch insects on the wing ,
and ...
Page 111
... while the one that least requires protection never does so , it will afford very
strong corroborative evidence that there is a real connexion between the
necessity for protection and the phenomenon of mimicry . Now the sexes of
insects offer us ...
... while the one that least requires protection never does so , it will afford very
strong corroborative evidence that there is a real connexion between the
necessity for protection and the phenomenon of mimicry . Now the sexes of
insects offer us ...
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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 |