Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1870 - 384 pages |
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Page 44
... necessary conditions , subject to which alone existence can be preserved , may , it is believed , be followed out so as to agree with all the phænomena presented by organized be- ings , their extinction and succession in past ages , and ...
... necessary conditions , subject to which alone existence can be preserved , may , it is believed , be followed out so as to agree with all the phænomena presented by organized be- ings , their extinction and succession in past ages , and ...
Page 47
... necessary deduction from the theory of Natural Se- lection , namely - that none of the definite facts of organic nature , no special organ , no characteristic form or marking , no peculiarities of instinct or of habit , no relations ...
... necessary deduction from the theory of Natural Se- lection , namely - that none of the definite facts of organic nature , no special organ , no characteristic form or marking , no peculiarities of instinct or of habit , no relations ...
Page 49
... necessary to give a sketch of the whole series of phænomena which may be classed under the head of useful or protective resemblances . Importance of Concealment as Influencing Colour . Concealment , more or less complete , is useful to ...
... necessary to give a sketch of the whole series of phænomena which may be classed under the head of useful or protective resemblances . Importance of Concealment as Influencing Colour . Concealment , more or less complete , is useful to ...
Page 50
... necessary . Hence without exception the upper plumage of every bird , whether lark , chat , sylvain , or sand - grouse , and also the fur of all the smaller mammals , and the skin of all the snakes and lizards , is of one uniform ...
... necessary . Hence without exception the upper plumage of every bird , whether lark , chat , sylvain , or sand - grouse , and also the fur of all the smaller mammals , and the skin of all the snakes and lizards , is of one uniform ...
Page 56
... necessary to enter somewhat into details , as we shall thereby be better able to appreciate the significance of the still more remarkable phenomena we shall presently have to discuss . It seems to be in pro- portion to their sluggish ...
... necessary to enter somewhat into details , as we shall thereby be better able to appreciate the significance of the still more remarkable phenomena we shall presently have to discuss . It seems to be in pro- portion to their sluggish ...
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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