Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 50
... the quails , the goatsuckers and the grouse , which abound in the North African
and Asiatic deserts , are all tinted and mottled so as to resemble with wonderful
accuracy the average colour and aspect of the soil in the district they inhabit .
... the quails , the goatsuckers and the grouse , which abound in the North African
and Asiatic deserts , are all tinted and mottled so as to resemble with wonderful
accuracy the average colour and aspect of the soil in the district they inhabit .
Page 53
Another is a South - American goatsucker ( Caprimulgus rupestris ) which rests in
the bright sunshine on little bare rocky islets in the Upper Rio Negro , where its
unusually light colours so closely resemble those of the rock and sand , that it ...
Another is a South - American goatsucker ( Caprimulgus rupestris ) which rests in
the bright sunshine on little bare rocky islets in the Upper Rio Negro , where its
unusually light colours so closely resemble those of the rock and sand , that it ...
Page 54
... the fresh green damp foliage of a marshy forest . There is a NorthAmerican frog
found on lichen - covered rocks and walls , which is so coloured as exactly to
resemble them , and as long as it remains quiet would certainly escape detection
.
... the fresh green damp foliage of a marshy forest . There is a NorthAmerican frog
found on lichen - covered rocks and walls , which is so coloured as exactly to
resemble them , and as long as it remains quiet would certainly escape detection
.
Page 56
It is very abundant , but so exactly does it resemble the bark in colour and
rugosity , and so closely does it cring to the branches , that until it moves it is
absolutely invisible ! An allied species ( O . concentricus ) is found only at Pará ,
on a 56 ...
It is very abundant , but so exactly does it resemble the bark in colour and
rugosity , and so closely does it cring to the branches , that until it moves it is
absolutely invisible ! An allied species ( O . concentricus ) is found only at Pará ,
on a 56 ...
Page 57
concentricus ) is found only at Pará , on a distinct species of tree , the bark of
which it resembles with equal accuracy . Both these insects are abundant , and
we may fairly conclude that the protection they derive from this strange
concealment ...
concentricus ) is found only at Pará , on a distinct species of tree , the bark of
which it resembles with equal accuracy . Both these insects are abundant , and
we may fairly conclude that the protection they derive from this strange
concealment ...
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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 |