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 116
... concealed nests , and the females are nearly as gay as their mates . The female of the pretty Australian bird Pardalotus punctatus , is very conspicuously spotted on the upper surface , and it builds in a hole in the ground . The gay ...
... concealed nests , and the females are nearly as gay as their mates . The female of the pretty Australian bird Pardalotus punctatus , is very conspicuously spotted on the upper surface , and it builds in a hole in the ground . The gay ...
Page 123
... concealing them from their enemies or from the creatures they prey upon . It has , I hope , been shown that the subject ... concealed . Another step in advance , and we have insects which are formed as well as coloured so as exactly to ...
... concealing them from their enemies or from the creatures they prey upon . It has , I hope , been shown that the subject ... concealed . Another step in advance , and we have insects which are formed as well as coloured so as exactly to ...
Page 256
... concealed . Much less can there be shown any group of birds , in which the females are all of decidedly conspicuous colours on the upper surface , and yet sit in open nests . The many cases in which birds of dull colours in both sexes ...
... concealed . Much less can there be shown any group of birds , in which the females are all of decidedly conspicuous colours on the upper surface , and yet sit in open nests . The many cases in which birds of dull colours in both sexes ...
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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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 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