Contributions to the Theory of Natural Selection: A Series of Essays |
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Page x
237 Passage rewritten , on more or less variable characters in relation to
nidification . 248 On males choosing or rejecting females , and on the various
modes in which colour may be acquired by female birds . PAGE 249 On probable
ancestral ...
237 Passage rewritten , on more or less variable characters in relation to
nidification . 248 On males choosing or rejecting females , and on the various
modes in which colour may be acquired by female birds . PAGE 249 On probable
ancestral ...
Page 90
In Britain we may particularly notice Sesia bombiliformis , which very closely
resembles the male of the large and common humble bee , Bombus hortorum ;
Sphecia craboniforme , which is coloured like a hornet , and is ( on the authority
of Mr ...
In Britain we may particularly notice Sesia bombiliformis , which very closely
resembles the male of the large and common humble bee , Bombus hortorum ;
Sphecia craboniforme , which is coloured like a hornet , and is ( on the authority
of Mr ...
Page 111
In all the numerous cases in which the male protects the female and her offspring
, or helps to supply them with food , his importance in the economy of nature is
proportionately increased , though it is never perhaps quite equal to that of ...
In all the numerous cases in which the male protects the female and her offspring
, or helps to supply them with food , his importance in the economy of nature is
proportionately increased , though it is never perhaps quite equal to that of ...
Page 112
In insects the case is very different ; they pair but once in their lives , and the
prolonged existence of the male is in most cases quite unnecessary for the
continuance of the race . The female , however , must continue to exist long
enough to ...
In insects the case is very different ; they pair but once in their lives , and the
prolonged existence of the male is in most cases quite unnecessary for the
continuance of the race . The female , however , must continue to exist long
enough to ...
Page 113
... of “ external conditions ” cannot be invoked here as it has been in the case of
the South American Pieris pyrrha and allies , where the white males frequent
open sunny places , while the Heliconia - like females haunt the shades of the
forest .
... of “ external conditions ” cannot be invoked here as it has been in the case of
the South American Pieris pyrrha and allies , where the white males frequent
open sunny places , while the Heliconia - like females haunt the shades of the
forest .
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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 |