Contributions to the Theory of Natural Selection: A Series of Essays |
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Page x
... less variable char- acters in relation to nidification . 248 On males choosing or rejecting females , and on the various modes in which colour may be acquired by female birds . TAGE 249 On probable ancestral colours of female birds . X ...
... less variable char- acters in relation to nidification . 248 On males choosing or rejecting females , and on the various modes in which colour may be acquired by female birds . TAGE 249 On probable ancestral colours of female birds . X ...
Page xiv
... less Forests Pp . 201-210 VI . - The Philosophy of Birds ' Nests . Instinct or Reason in the Construction of Birds ' Nests - Do Men build by Reason or by Imitation ? -- Why does each Bird build a peculiar kind of Nest ? -How do young ...
... less Forests Pp . 201-210 VI . - The Philosophy of Birds ' Nests . Instinct or Reason in the Construction of Birds ' Nests - Do Men build by Reason or by Imitation ? -- Why does each Bird build a peculiar kind of Nest ? -How do young ...
Page 2
... less continuous , but unequal in their progress , and during the whole series the organic life of the earth has undergone a corresponding alteration . This alteration also has been gradual , but complete ; after a certain interval not a ...
... less continuous , but unequal in their progress , and during the whole series the organic life of the earth has undergone a corresponding alteration . This alteration also has been gradual , but complete ; after a certain interval not a ...
Page 16
... less numerous in species , and more or less varied in form and structure than either of those which preceded it . Again , each of these groups may not have become totally extinct , but may have left a few species , the modified ...
... less numerous in species , and more or less varied in form and structure than either of those which preceded it . Again , each of these groups may not have become totally extinct , but may have left a few species , the modified ...
Page 18
... less probable that a change in the physical conditions of a district , even small in amount if rapid , or even gradual if to a great amount , would be highly unfavourable to the existence of individuals , might cause the extinction of ...
... less probable that a change in the physical conditions of a district , even small in amount if rapid , or even gradual if to a great amount , would be highly unfavourable to the existence of individuals , might cause the extinction of ...
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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 adapted affinity animals antennæ antitypes appear beauty become beetles believe birds Borneo brain build butterflies caterpillars causes Celebes changes character closely allied species colour concealed conspicuous Crown 8vo curious Danaidæ Darwin Diphilus distinct earth Edition eggs epoch essay exactly example existence explained extinct facts faculties favourable flowers genera genus geological geological periods groups habits Heliconidæ Illustrations imitation India individuals inhabiting insects instinct islands Java larvæ Lepidoptera less Malayan male mimic mimicry mode modifications Moluccas moths natural selection nectary nest never nidification number of species observations occur Origin of Species Ormenus Pammon Papilio Papilio Ulysses Papilionidæ peculiar period phenomena physical Polydorus possess present probably produced Professor protection race regions remarkable render resemble savage Science sexes sexual selection shown structure Sumatra tail theory of natural Theseus tints tion TREATISE trees tropical University variation varied varieties whole wings
Popular passages
Page 361 - But the passage from the physics of the brain to the corresponding facts of consciousness is unthinkable. Granted that a definite thought and a definite molecular action in the brain occur simultaneously; we do not possess the intellectual organ, nor apparently any rudiment of the organ, which would enable us to pass, by a process of reasoning, from the one to the other.
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Page 326 - natural selection' himself, but he is actually able to take away some of that power from nature which, before his appearance, she universally exercised. We can anticipate the time when the earth will produce only cultivated plants and domestic animals ; when man's selection shall have supplanted
Page 8 - The book will doubtless find a place in the library, not only of the scientific geologist, but also of all who are desirous of the industrial progress and commercial prosperity of the Acadian provinces.