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 93
... completely puzzle the collector on every fresh occasion of capturing them . I have been recently in- formed by Mr. Jenner Weir , who keeps a variety of small birds , that none of them will touch our com- mon " soldiers and sailors ...
... completely puzzle the collector on every fresh occasion of capturing them . I have been recently in- formed by Mr. Jenner Weir , who keeps a variety of small birds , that none of them will touch our com- mon " soldiers and sailors ...
Page 170
... completely lost the tail in both sexes . Papilio Agamemnon exhibits a somewhat similar series of changes . In India it is always tailed ; in the greater part of the archipelago it has a very short tail ; while far east , in New Guinea ...
... completely lost the tail in both sexes . Papilio Agamemnon exhibits a somewhat similar series of changes . In India it is always tailed ; in the greater part of the archipelago it has a very short tail ; while far east , in New Guinea ...
Page 345
... completely abolished under the law of natural selec- tion , unless it had become so positively injurious as to lead to the almost invariable extinction of individuals possessing it . The constant absence of Hair from certain parts of ...
... completely abolished under the law of natural selec- tion , unless it had become so positively injurious as to lead to the almost invariable extinction of individuals possessing it . The constant absence of Hair from certain parts of ...
Contents
Geographical distribution dependent on Geologic Changes A | 1 |
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 affinity Amboyna anal valves animals antennæ appear beauty become beetles birds Borneo brain brilliant build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous curious Danaidæ Darwin Diphilus distinct eggs equally evidence exactly existence external extinct facts faculties favourable female birds flowers genera genus geological groups Guinea habits hairy harmony Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male mental Mimeta mimic mimicry mode modifications Moluccas moths natural selection nectary nest never nidification number of species observations occur organic Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar perfect phenomena Polydorus possess present probably produced protection races regions remarkable render resemble savage sexes sexual sexual selection shown structure Sumatra tail theory of natural Theseus tints tion trees tropical Tropidorhynchus variation varied varieties whole wings yellow