Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan, 1871 - 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 xvi
... Faculties , by the preservation of Useful Variations , not possible - Difficulty as to the Origin of the Moral Sense - Sum- mary of the Argument as to the Insufficiency of Natural Selection to account for the Development of Man - The ...
... Faculties , by the preservation of Useful Variations , not possible - Difficulty as to the Origin of the Moral Sense - Sum- mary of the Argument as to the Insufficiency of Natural Selection to account for the Development of Man - The ...
Page 28
... faculties and all their energies is required to preserve their own existence and provide for that of their infant off- spring . The possibility of procuring food during the least favourable seasons , and of escaping the attacks of their ...
... faculties and all their energies is required to preserve their own existence and provide for that of their infant off- spring . The possibility of procuring food during the least favourable seasons , and of escaping the attacks of their ...
Page 39
... faculties become quite useless , and the other half are but occasionally called into fecble exercise , while even its muscular system is only irregularly brought into action . Now when a variety of such an animal occurs , having ...
... faculties become quite useless , and the other half are but occasionally called into fecble exercise , while even its muscular system is only irregularly brought into action . Now when a variety of such an animal occurs , having ...
Page 40
... faculties are so proportioned to each other as to be best adapted to procure food and secure safety , that in which by the full exercise of every part of its organisation the animal can alone continue to live . Domestic varieties , when ...
... faculties are so proportioned to each other as to be best adapted to procure food and secure safety , that in which by the full exercise of every part of its organisation the animal can alone continue to live . Domestic varieties , when ...
Page 41
... faculties , that true balance of organisation , by means of which alone an animal left to its own resources can preserve its existence and continue its race . Lamarck's Hypothesis very different from that now advanced . The hypothesis ...
... faculties , that true balance of organisation , by means of which alone an animal left to its own resources can preserve its existence and continue its race . Lamarck's Hypothesis very different from that now advanced . The hypothesis ...
Other editions - View all
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 adapted Amboyna anal valves animals antennæ appear beautiful become bees beetles believe birds Borneo brain build butterflies caterpillars causes Celebes changes character colour concealed conspicuous Crown 8vo curious Danaidæ Darwin Diphilus direction distinct Edition eggs essay exactly existence external extinct Extra fcap facts faculties favourable Fcap flowers genera genus geological groups habits Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male materials mental mimic mimicry mode modified Moluccas moths natural selection nectary nest never observations occur organic Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar perfect phenomena POEMS Polydorus possess present probably produced Professor protection races reason regions remarkable render resemble savage sexes sexual sexual selection shown structure Sumatra tail theory of natural Theseus tints tion trees tropical variation varied varieties whole wings young birds
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