Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 pages |
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Page 10
... action of winds and currents , and at a period sufficiently remote to have had the original species die out , and the modified prototypes only remain . In the same way we can account for the separate islands having each their peculiar ...
... action of winds and currents , and at a period sufficiently remote to have had the original species die out , and the modified prototypes only remain . In the same way we can account for the separate islands having each their peculiar ...
Page 11
... action from the sea , or in which a moun- tain - chain has been elevated in a recent geological epoch , the phænomena of peculiar groups or even of single representative species will not exist . own island is an example of this , its ...
... action from the sea , or in which a moun- tain - chain has been elevated in a recent geological epoch , the phænomena of peculiar groups or even of single representative species will not exist . own island is an example of this , its ...
Page 19
... action during the vast unknown interval at the termination of the Palæozoic period , and then a decreasing violence or rapidity through the Second- ary period , to allow for the gradual repopulation of the earth with varied forms , and ...
... action during the vast unknown interval at the termination of the Palæozoic period , and then a decreasing violence or rapidity through the Second- ary period , to allow for the gradual repopulation of the earth with varied forms , and ...
Page 36
... action , the parent species would next suffer , would gradually diminish in numbers , and with a recurrence of similar unfavourable conditions might also become extinct . The superior variety would then alone remain , and on a return to ...
... action , the parent species would next suffer , would gradually diminish in numbers , and with a recurrence of similar unfavourable conditions might also become extinct . The superior variety would then alone remain , and on a return to ...
Page 39
... action . Now when a variety of such an animal occurs , having increased power or capacity in any organ or sense , such increase is totally useless , is never called into action , and may even exist without the animal ever becoming aware ...
... action . Now when a variety of such an animal occurs , having increased power or capacity in any organ or sense , such increase is totally useless , is never called into action , and may even exist without the animal ever becoming aware ...
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 alike Amboyna animals antennæ appear beautiful become bees beetles birds Borneo brain brilliant build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Darwin Diphilus distinct Edition eggs essay evidence exactly existence external extinct Extra fcap facts faculties favourable Fcap flowers genera genus geological groups Guinea habits Heliconidæ imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male Mimeta mimic mimicry mode modified 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 period phenomena POEMS Polydorus possess present probably produced protection race 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
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