Contributions to the Theory of Natural Selection: A Series of EssaysAMS Press, 1973 - 384 pages Wallace noticed on expeditions to the Amazon and the Malay archipelego that mammals in Southeast Asia are more advanced than their Australian cousins. His suggestion was that the two continents had split before the better adapted mammals had evolved in Asia. The isolated Australian marsupials were able to thrive, whilst those in Asia were driven to extinction by competition from more advanced mammals. This led to his theory of natural selection, which he presented to the Linnean Society in 1858 with Charles Darwin. This volume reprints those papers presented to the Linnean Society. |
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Page 71
... possess permanently , or can emit at pleasure . The attitudes of some insects may also protect them , as the habit of turning up the tail by the harmless rove - beetles ( Sta- phylindida ) no doubt leads other animals besides chil- dren ...
... possess permanently , or can emit at pleasure . The attitudes of some insects may also protect them , as the habit of turning up the tail by the harmless rove - beetles ( Sta- phylindida ) no doubt leads other animals besides chil- dren ...
Page 134
... possess two characters quite peculiar to them . Mr. Edward Doubleday , in his " Genera of Diurnal Lepidoptera , " says , " The Papilionida may be known by the apparently four - branched median nervule and the spur on the anterior tibi¿ ...
... possess two characters quite peculiar to them . Mr. Edward Doubleday , in his " Genera of Diurnal Lepidoptera , " says , " The Papilionida may be known by the apparently four - branched median nervule and the spur on the anterior tibi¿ ...
Page 202
... possess , or what relation their powers of seeing , hearing , and feeling have to Their sight may far exceed ours both in delicacy and in range , and may possibly give them knowledge of the internal constitution of bodies analogous to ...
... possess , or what relation their powers of seeing , hearing , and feeling have to Their sight may far exceed ours both in delicacy and in range , and may possibly give them knowledge of the internal constitution of bodies analogous to ...
Contents
Geographical distribution dependent on Geologic Changes A | 4 |
On the Tendency of Varieties to depart indefinitely from | 26 |
onlyCause of the dull Colours of Female BirdsUse of the gaudy | 129 |
Copyright | |
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Contributions to the Theory of Natural Selection: A Series of Essays ... Alfred Russel Wallace No preview available - 2018 |
Contributions to the Theory of Natural Selection: A Series of Essays Alfred Russel Wallace No preview available - 2016 |
Common terms and phrases
abundant action adapted allied animals appear beauty become believe birds body brain build butterflies causes Celebes changes character closely colour common comparatively completely concealed consider conspicuous continually direction distinct effect equally evidence exactly example existence explained facts faculties female flowers force further genera genus give greater groups habits imitation important increase India individuals inhabiting insects instinct islands kind known less limited living male materials means mimicry mind mode modifications moths natural selection necessary nest never objects observations occur organic origin Papilio perfect period phenomena possess present probably produced protection prove races reason regions remarkable render resemble result savage seems seen sexes shown similar species structure supposed tail theory tints tion trees true universe variation varied varieties various whole wings