Contributions to the Theory of Natural Selection: A Series of Essays |
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Page 3
Many causes , no doubt , have operated of which we must ever remain in
ignorance , and we may , therefore , expect to find many details very difficult of
explanation , and in attempting to give one , must allow ourselves to call into our
service ...
Many causes , no doubt , have operated of which we must ever remain in
ignorance , and we may , therefore , expect to find many details very difficult of
explanation , and in attempting to give one , must allow ourselves to call into our
service ...
Page 19
That such effects did take place in connexion with the causes to which we have
imputed them , is shown in the case of the Coal formation , the faults and
contortions of which show a period of great activity and violent convulsions , and
it is in ...
That such effects did take place in connexion with the causes to which we have
imputed them , is shown in the case of the Coal formation , the faults and
contortions of which show a period of great activity and violent convulsions , and
it is in ...
Page 20
to any causes but those we know to have existed , and to effects fairly deducible
from them . The precise manner in which the geological changes of the early
formations were effected is so extremely obscure , that when we can explain ...
to any causes but those we know to have existed , and to effects fairly deducible
from them . The precise manner in which the geological changes of the early
formations were effected is so extremely obscure , that when we can explain ...
Page 29
greater or less fecundity of an animal is often considered to be one of the chief
causes of its abundance or scarcity ; but a consideration of the facts will show us
that it really has little or nothing to do with the matter . Even the least prolific of ...
greater or less fecundity of an animal is often considered to be one of the chief
causes of its abundance or scarcity ; but a consideration of the facts will show us
that it really has little or nothing to do with the matter . Even the least prolific of ...
Page 33
Our ignorance will generally prevent us from accurately tracing the effects to their
causes ; but could we become perfectly acquainted with the organization and
habits of the various species of animals , INDEFINITELY FROM THE ORIGINAL ...
Our ignorance will generally prevent us from accurately tracing the effects to their
causes ; but could we become perfectly acquainted with the organization and
habits of the various species of animals , INDEFINITELY FROM THE ORIGINAL ...
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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 |