Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1875 - 384 pages |
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Page 2
... 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 single species existing which had lived at the commence- ment of ...
... 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 single species existing which had lived at the commence- ment of ...
Page 4
... whole earth , while smaller ones , such as families and genera , are frequently confined to one portion , often to a very limited dis- trict . 2. In widely distributed families the genera are often limited in range ; in widely ...
... whole earth , while smaller ones , such as families and genera , are frequently confined to one portion , often to a very limited dis- trict . 2. In widely distributed families the genera are often limited in range ; in widely ...
Page 8
... whole difficulty of the true Natural System of classification becomes apparent to us . We shall thus find ourselves obliged to reject all those systems of classification which arrange species or groups in circles , as well as those ...
... whole difficulty of the true Natural System of classification becomes apparent to us . We shall thus find ourselves obliged to reject all those systems of classification which arrange species or groups in circles , as well as those ...
Page 9
... whole families peculiar to it , will be the neces- sary result of its having been isolated for a long period , sufficient for many series of species to have been created on the type of pre - existing ones , which , as well as many of ...
... whole families peculiar to it , will be the neces- sary result of its having been isolated for a long period , sufficient for many series of species to have been created on the type of pre - existing ones , which , as well as many of ...
Page 10
... whole of the islands with the same species from which differ- ently modified prototypes were created , or that the islands were successively peopled from each other , but that new species have been created in each on the plan of the pre ...
... whole of the islands with the same species from which differ- ently modified prototypes were created , or that the islands were successively peopled from each other , but that new species have been created in each on the plan of the pre ...
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 |
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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 20 - Flower (WH) — AN INTRODUCTION TO THE OSTEOLOGY OF THE MAMMALIA. Being the Substance of the Course of Lectures delivered at the Royal College of Surgeons of England in 1870.
Page 368 - WILL, while we have no knowledge of any other primary cause of force, it does not seem an improbable conclusion that all force may be will-force; and thus, that the whole universe is not merely dependent on, but actually is, the WILL of higher intelligences or of one Supreme Intelligence.
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Page 8 - World : a Simple Account of Man in Early Times. Sixth Edition. Crown 8vo. Cloth, price 3$. A Special Edition for Schools. Price is. The Childhood of Religions.
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.