EssaysD. Appleton & Company, 1910 |
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Стр. 399
... selection ; for most of the modifications named make no appreciable external signs : the width across the zygomata could alone be perceived . Neither can natural selection have had any- thing to do with it ; for even were there any ...
... selection ; for most of the modifications named make no appreciable external signs : the width across the zygomata could alone be perceived . Neither can natural selection have had any- thing to do with it ; for even were there any ...
Стр. 400
... selection ; for in the bull - dog , which has also relatively short jaws , these structures concerned in closing them are unusually large . Thus there remains as the only con- ceivable cause , the diminution of size which results from ...
... selection ; for in the bull - dog , which has also relatively short jaws , these structures concerned in closing them are unusually large . Thus there remains as the only con- ceivable cause , the diminution of size which results from ...
Стр. 401
... selection , there have not gone proportionate changes in length of tongue . Take again the case of teeth and jaws . In mankind these have not varied together . During civilization the jaws have decreased , but the teeth have not ...
... selection , there have not gone proportionate changes in length of tongue . Take again the case of teeth and jaws . In mankind these have not varied together . During civilization the jaws have decreased , but the teeth have not ...
Стр. 403
... selection of favourable variations , but must be ascribed exclusively to the inherited effects of changed functions . Whoever has seen a giraffe gallop will long remember the sight as a ludicrous one . The reason for the strangeness of ...
... selection of favourable variations , but must be ascribed exclusively to the inherited effects of changed functions . Whoever has seen a giraffe gallop will long remember the sight as a ludicrous one . The reason for the strangeness of ...
Стр. 405
... selection of useful variations is the sole factor of organic evolution . This class of difficulties , already pointed out in § 166 of the Principles of Biology , I cannot more clearly set forth than in the words there used . Hence I may ...
... selection of useful variations is the sole factor of organic evolution . This class of difficulties , already pointed out in § 166 of the Principles of Biology , I cannot more clearly set forth than in the words there used . Hence I may ...
Часто встречающиеся слова и выражения
action aggregation analogy angular velocities animals arise assume become belief body cause centre changes characters complex compound conception connexion consciousness consequent contrast creatures Darwin degree Devonian differentiation direct doctrine Duke of Argyll Earth effects emotions evidence evolution exist fact Fauna feelings force formation forms fossils functions further geological gravity greater groups habit heat Hence heterogeneous higher homogeneous human implies increasing individual inferred inheritance John Herschel kind less living mammals manifest mass matter medium mental Metazoa modifications motion natural selection Nebular Hypothesis nebulous observed orbits organic Origin of Species original outer ovum phenomena photosphere planetoids plants present produced progress Protozoa races relation remote respect ring rotation satellites Silurian similarly social society Solar Solar System species specific gravity spheroid stars strata stratum structure supposed surface temperature things tion traits tribe truth unlike variations velocity vertebrata
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Стр. 113 - Can this also be mere coincidence ? When to the fact that the general mass of nebulae are antithetical in position to the general mass of stars, we add the fact that local regions of nebulae are regions where stars are scarce, and the further fact that single nebulae are habitually found in comparatively starless spots ; does not the proof of a physical...
Стр. 429 - I mean by Nature, only the aggregate action and product of many natural laws, and by laws the sequence of events as ascertained by us.
Стр. 2 - Is it most likely that there have been ten millions of special creations ? or is it most likely that by continual modifications, due to change of circumstances, ten millions of varieties have been produced, as varieties are being produced still...
Стр. 314 - In endeavouring to account for the worship of animals, we must remember that names are very frequently taken from them. The children and followers of a man called the Bear or the Lion would make that a tribal name. Hence the animal itself would be first respected, at last worshipped.
Стр. 270 - Art goes yet further, imitating that rational and most excellent work of nature, man ; for by art is created that great leviathan, called a Commonwealth, or State, (in Latin Ciutas) which is but an artificial man...
Стр. 420 - I think there can be no doubt that use in our domestic animals has strengthened and enlarged certain parts, and disuse diminished them ; and that such modifications are inherited.
Стр. 61 - ... the more he is baffled. Similarly, though analysis of mental actions may finally bring him down to sensations as the original materials out of which all thought is woven, he is none the forwarder ; for he cannot in the least comprehend sensation — cannot even conceive how sensation is possible. Inward and outward things he thus discovers to be alike inscrutable in their ultimate genesis and nature.
Стр. 420 - I may take this opportunity of remarking that my critics frequently assume that I attribute all changes of corporeal structure and mental power exclusively to the natural selection of such variations as are often called spontaneous; whereas, even in the first edition of the
Стр. 154 - That our harmonious universe once existed potentially as formless diffused matter, and has slowly grown into its present organized state, is a far more astonishing fact than would have been its formation after the artificial method vulgarly supposed. Those who hold it legitimate to argue from phenomena to noumena, may rightly contend that the Nebular Hypothesis implies a First Cause as much transcending "the mechanical God of Paley," as this does the fetish of the savage.
Стр. 333 - I conceive it to be the business of Moral Science to deduce, from the laws of life and the conditions of existence, what kind of actions necessarily tend to produce happiness, and what kinds to produce unhappiness.