Contributions to the Theory of Natural Selection: A Series of EssaysMacmillan and Company, 1875 - 384 pages |
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Page 15
... tree , as the best mode of representing the natural arrange- ment of species and their successive creation , let us suppose that at an early geological epoch any group ( say a class of the Mollusca ) has attained to a great richness of ...
... tree , as the best mode of representing the natural arrange- ment of species and their successive creation , let us suppose that at an early geological epoch any group ( say a class of the Mollusca ) has attained to a great richness of ...
Page 50
... trees , brush- wood , nor even undulation of the surface afford the slightest protection to its foes , a modification of colour which shall be assimilated to that of the surround- ing country , is absolutely necessary . Hence without ...
... trees , brush- wood , nor even undulation of the surface afford the slightest protection to its foes , a modification of colour which shall be assimilated to that of the surround- ing country , is absolutely necessary . Hence without ...
Page 51
... trees as to catch small birds among the branches . So also the woodchuck of Canada has a dark - brown fur ; but then it lives in burrows and frequents river banks , catching fish and small animals that live in or near the water . Among ...
... trees as to catch small birds among the branches . So also the woodchuck of Canada has a dark - brown fur ; but then it lives in burrows and frequents river banks , catching fish and small animals that live in or near the water . Among ...
Page 53
... tree while waiting for his prey to pass beneath as to be hardly distinguishable from the bark . Among birds , the ... trees , it is almost impossible to detect it . In snipes the colours are modified so as to be equally in harmony ...
... tree while waiting for his prey to pass beneath as to be hardly distinguishable from the bark . Among birds , the ... trees , it is almost impossible to detect it . In snipes the colours are modified so as to be equally in harmony ...
Page 54
... trees in the tropics , are of such curiously marbled colours as to match exactly with the bark they rest upon . In every part of the tropics there are tree - snakes that twist among boughs and shrubs , or lie coiled up on the dense ...
... trees in the tropics , are of such curiously marbled colours as to match exactly with the bark they rest upon . In every part of the tropics there are tree - snakes that twist among boughs and shrubs , or lie coiled up on the dense ...
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 adapted affinity animals antenn¿ 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 Danaid¿ Darwin Diphilus distinct earth Edition eggs epoch essay exactly example existence explained extinct facts faculties favourable flowers genera genus geological geological periods groups habits Heliconid¿ Illustrations imitation India individuals inhabiting insects instinct islands Java larv¿ 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 Papilionid¿ 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.