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42개의 결과 중 6 - 10개
28 페이지
... descendants of other species ? " The actual causes of variation aro unknown . Mr. Darwin favors the opinion of the late Mr. Knight , the great philosopher of horticulture , that variability under domestication is 25 DARWINIANA .
... descendants of other species ? " The actual causes of variation aro unknown . Mr. Darwin favors the opinion of the late Mr. Knight , the great philosopher of horticulture , that variability under domestication is 25 DARWINIANA .
29 페이지
... actual amount of certain changes , such as size or abundance of fruit , size of udder , stands of course in obvious relation to supply of food . Really , we no more know the reason why the pro- . geny occasionally deviates from the ...
... actual amount of certain changes , such as size or abundance of fruit , size of udder , stands of course in obvious relation to supply of food . Really , we no more know the reason why the pro- . geny occasionally deviates from the ...
32 페이지
... actual fixity of many of them , nega- tive this assumption . " To assert that we could not breed our cart and race horses , long and short horned cattle , and poultry of various breeds , for almost an infinite number of generations ...
... actual fixity of many of them , nega- tive this assumption . " To assert that we could not breed our cart and race horses , long and short horned cattle , and poultry of various breeds , for almost an infinite number of generations ...
34 페이지
... actual passage . " This gradation from species downward is well mado out . To carry it one step farther upward , our author presents in a strong light the differences which prevail among naturalists as to what forms should be admit ted ...
... actual passage . " This gradation from species downward is well mado out . To carry it one step farther upward , our author presents in a strong light the differences which prevail among naturalists as to what forms should be admit ted ...
35 페이지
... actual coincidence of authorities is owing to imperfect or restricted observation , and to one naturalist's adopting the conclusions of another without independent observation , this is not the place to consider . It is our impression ...
... actual coincidence of authorities is owing to imperfect or restricted observation , and to one naturalist's adopting the conclusions of another without independent observation , this is not the place to consider . It is our impression ...
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actual adaptation Agassiz American appears argument atheistic auroch bald cypress balls botanists California Candolle common conclusion connection creation Creator Cretaceous crystalline lens Darwin Darwin's theory derivative hypothesis descendants distinct divergence diversification divine doctrine equally Europe evidence evolution explain extinct facts favor final causes flora force forms fossil genera genus geographical geological George Bentham glands Glyptostrobus gradations ground havo human idea individuals infer insects instance Japan laws least less living matter means mind miocene natural history natural selection natural theology naturalists nebular hypothesis North objections organic world origin of species particular peculiar perhaps period philosophical phyllotaxis physical plants and animals present primordial probably proof prove question races redwoods regard region remarks reviewer samo scientific Sequoia sort succession sundew supernatural suppose Taxodium tertiary theistic theologians theology theso things thought tion tive trees varieties vary vegetable whole
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133 페이지 - And God said, Let the earth bring forth the living creature after his kind, cattle, and creeping thing, and beast of the earth after his kind: and it was so.
147 페이지 - To my mind it accords better with what we know of the laws impressed on matter by the Creator, that the production and extinction of the past and present inhabitants of the world should have been due to secondary causes, like those determining the birth and death of the individual.
233 페이지 - England and some other parts of Europe. So the Sequoias, now remarkable for their restricted station and numbers, as well as for their extraordinary size, are of an ancient stock ; their ancestors and kindred formed a large part of the forests which flourished throughout the polar regions, now desolate and iceclad, and which extended into low latitudes in Europe.
271 페이지 - But the only distinct meaning of that word is stated, fixed, or settled; since what is natural, as much requires and presupposes an intelligent agent to render it so, ie to effect it continually or at stated times, as what is supernatural or miraculous does to effect it for once. And from hence it must follow, that persons...
29 페이지 - Altogether at least a score of pigeons might be chosen, which, if shown to an ornithologist, and he were told that they were wild birds, would certainly be ranked by him as well-defined species.
178 페이지 - Hilaire, that is, against the supposition that time brings about a gradual alteration of whole species ; but it goes for little against Darwin, unless it be proved that species never vary, or that the perpetuation of a variety necessitates the extinction of the parent breed. For Darwin clearly maintains— what the facts warrant— that the mass of a species remains fixed so long as it exists at all, though it may set off a variety now and then. The variety may finally supersede the parent form...
295 페이지 - ... part, without sensible effects. The little prisoner is not crushed and suddenly destroyed, as is sometimes supposed, for I have often liberated captive flies and spiders, which sped away as fast as fear or joy could hasten them. At other times I have found them enveloped in a fluid of mucilaginous consistence, which seems to act as a solvent, the insects being more or less consumed in it.
15 페이지 - ... either hand, and say how much of truth there may be in each? The present reviewer has not the presumption to undertake such a task. Having no prepossession in favor of naturalistic theories, but struck with the eminent ability of Mr. Darwin's work, and charmed with its fairness, our humbler duty will be performed if, laying aside prejudice as much as we can, we shall succeed in giving a fair account of its method and argument, offering by the way a few suggestions, such as might occur to any...
31 페이지 - If strange and rare deviations of structure are really inherited, less strange and commoner deviations may be freely admitted to be inheritable. Perhaps the correct way of viewing the whole subject would be, to look at the inheritance of every character whatever as the rule, and non-inheritance as the anomaly.