Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1875 - 384 pages |
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Page 9
... Asia , and that peculiar to South America , are examples that may be accounted for in this manner . Such phænomena as are exhibited by the Gala- pagos Islands , which contain little groups of plants and THE INTRODUCTION OF NEW SPECIES . 9.
... Asia , and that peculiar to South America , are examples that may be accounted for in this manner . Such phænomena as are exhibited by the Gala- pagos Islands , which contain little groups of plants and THE INTRODUCTION OF NEW SPECIES . 9.
Page 10
... example is known of an island which can be proved geologically to be of very recent crigin ( late in the Tertiary , for instance ) , and yet possesses generic or family groups , or even many species peculiar to itself . When a range of ...
... example is known of an island which can be proved geologically to be of very recent crigin ( late in the Tertiary , for instance ) , and yet possesses generic or family groups , or even many species peculiar to itself . When a range of ...
Page 11
... example of this , its separation from the continent being geologically very recent , and we have consequently scarcely a species which is pecu- liar to it ; while the Alpine range , one of the most Our recent mountain elevations ...
... example of this , its separation from the continent being geologically very recent , and we have consequently scarcely a species which is pecu- liar to it ; while the Alpine range , one of the most Our recent mountain elevations ...
Page 12
... examples ; -the Goliathi of Africa , the Ornithoptera of the Indian Islands , the Heliconidæ of South America , the Danaidæ of the East , and in all , the most closely allied species found in geographical proximity . The question forces ...
... examples ; -the Goliathi of Africa , the Ornithoptera of the Indian Islands , the Heliconidæ of South America , the Danaidæ of the East , and in all , the most closely allied species found in geographical proximity . The question forces ...
Page 21
... example , during the Silurian period all the earth was Silurian , and animals were living and dying , and depositing their remains more or less over the whole area of the globe , and they were probably ( the species at least ) nearly as ...
... example , during the Silurian period all the earth was Silurian , and animals were living and dying , and depositing their remains more or less over the whole area of the globe , and they were probably ( the species at least ) nearly as ...
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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 |
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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.