Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 pages |
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Page 52
... consider the cases of more special adaptation . If the lion is enabled by his sandy colour readily to conceal him- self by merely crouching down upon the desert , how , it may be asked , do the elegant markings of the tiger , the jaguar ...
... consider the cases of more special adaptation . If the lion is enabled by his sandy colour readily to conceal him- self by merely crouching down upon the desert , how , it may be asked , do the elegant markings of the tiger , the jaguar ...
Page 65
... consider the remarkable fact of the rarity of white colouring in the mammalia or birds of the temperate or tropical zones in a state of nature . There is not a single white land- bird or quadruped in Europe , except the few arctic or ...
... consider the remarkable fact of the rarity of white colouring in the mammalia or birds of the temperate or tropical zones in a state of nature . There is not a single white land- bird or quadruped in Europe , except the few arctic or ...
Page 74
... consider the phenomena of what has been termed " mimicry . " It is to be par- ticularly observed , however , that the word is not here used in the sense of voluntary imitation , but to imply a particular kind of resemblance - a ...
... consider the phenomena of what has been termed " mimicry . " It is to be par- ticularly observed , however , that the word is not here used in the sense of voluntary imitation , but to imply a particular kind of resemblance - a ...
Page 80
... consider how this kind of protection must act . Tropical insectivorous birds very frequently sit on dead branches of a lofty tree , or on those which overhang forest paths , gazing intently around , and darting off at intervals to seize ...
... consider how this kind of protection must act . Tropical insectivorous birds very frequently sit on dead branches of a lofty tree , or on those which overhang forest paths , gazing intently around , and darting off at intervals to seize ...
Page 99
... consider all the conditions necessary to produce a good deceptive imitation , we shall see at once that such can very rarely occur in the higher animals , since they possess none of those facilities for the almost infinite modifications ...
... consider all the conditions necessary to produce a good deceptive imitation , we shall see at once that such can very rarely occur in the higher animals , since they possess none of those facilities for the almost infinite modifications ...
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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