Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - Всего страниц: 494 |
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Стр. 10
... seen it may be thought that time is being wasted on mere curious details and strange facts which have little bearing on the question at issue . The theory of natural selection rests on two main classes of facts which apply to all ...
... seen it may be thought that time is being wasted on mere curious details and strange facts which have little bearing on the question at issue . The theory of natural selection rests on two main classes of facts which apply to all ...
Стр. 17
... seen in their curiously irregular distribution over the face of the earth . Not only has each country its distinct plants , but every valley , every hillside , almost every hedgerow , has a different set of plants from its adjacent ...
... seen in their curiously irregular distribution over the face of the earth . Not only has each country its distinct plants , but every valley , every hillside , almost every hedgerow , has a different set of plants from its adjacent ...
Стр. 18
... very extensive heath which had never been cultivated . After the planted portion was about twenty - five years old he observed that the change in the native vegetation was greater than is often seen in passing from one 18 СНАР . DARWINISM.
... very extensive heath which had never been cultivated . After the planted portion was about twenty - five years old he observed that the change in the native vegetation was greater than is often seen in passing from one 18 СНАР . DARWINISM.
Стр. 19
... seen in passing from one quite different soil to another . Besides a great change in the pro- portional numbers of the native heath - plants , twelve species which could not be found on the heath flourished in the plantations . The ...
... seen in passing from one quite different soil to another . Besides a great change in the pro- portional numbers of the native heath - plants , twelve species which could not be found on the heath flourished in the plantations . The ...
Стр. 34
... seen at work in the fact that certain mountain varieties of sheep will starve out other mountain varieties , so that the two cannot be kept together . In plants the same thing occurs . If several distinct varieties of wheat are sown ...
... seen at work in the fact that certain mountain varieties of sheep will starve out other mountain varieties , so that the two cannot be kept together . In plants the same thing occurs . If several distinct varieties of wheat are sown ...
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abundant adapted adduced allied species America amount animals and plants appears birds breed brilliant butterflies carnivora cause characters climate closely allied colours of animals common concealment conspicuous continued cross-fertilisation crossed curious Darwin dicotyledons distinct species domestic animals effects eggs enemies Eocene evidence extinct facts faculty favourable female fertile fertilisation flowers genera genus geological groups habits hybrids illustration important increase individuals infertility inhabit insects intercrossing kind larvæ less living male mammalia mammals markings marsupials mimicry Miocene mode modified moths natural selection naturalists nests occur offspring organs Origin of Species peculiar pigeons Pliocene pollen portion possess probably produced Professor protectively coloured pupa races regions remarkable resemble seeds self-fertilisation Silurian similar specimens spots sterility structure struggle for existence supposed tail theory tints tion toes trees tropical usually variability variation varied varieties vegetation warning colours whole wild wings Zealand
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Стр. 337 - FLOWER in the crannied wall, I pluck you out of the crannies, I hold you here, root and all, in my hand, Little flower — but if I could understand What you are, root and all, and all in all, I should know what God and man is.
Стр. 478 - That life is not as idle ore, But iron dug from central gloom, And heated hot with burning fears, And dipt in baths of hissing tears, And batter'd with the shocks of doom To shape and use.
Стр. 40 - When we reflect on this struggle, we may console ourselves with the full belief, that the war of nature is not incessant, that no fear is felt, that death is generally prompt, and that the vigorous, the healthy, and the happy survive and multiply.
Стр. 412 - I have now recapitulated the facts and considerations which have thoroughly convinced me that species have been modified during a long course of descent. This has been effected chiefly through the natural selection of numerous successive, slight, favourable variations; aided in an important manner by the inherited effects of the use and disuse of parts; and in an unimportant manner, that is in relation to adaptive structures, whether past or present, by the direct action of external conditions, and...
Стр. 474 - The special faculties we have been discussing clearly point to the existence in man of something which he has not derived from his animal progenitors — something which we may best refer to as being of a spiritual essence or nature, capable of progressive development under favourable conditions.
Стр. 38 - Starting, and looking half round, I saw the lion just in the act of springing upon me. I was upon a little height ; he caught my shoulder as he sprang, and we both came to the ground below together. Growling horribly close to my ear, he shook me as a terrier dog does a rat.
Стр. 31 - Not far from Shelbyville, in the State of Kentucky, about five years ago, there was one of these breeding places, which stretched through the woods in nearly a north and south direction ; was several miles in breadth, and was said to be upwards of forty miles in extent ! In this tract, almost every tree was furnished with nests, wherever the branches could accommodate them.
Стр. 31 - The ground was strewed with broken limbs of trees, eggs, and young squab pigeons, which had been precipitated from above, and on which herds of hogs were fattening. Hawks, buzzards, and eagles, were sailing about in great numbers, and seizing the squabs from...
Стр. 265 - That the imitative species occur in the same area and occupy the same station as the imitated. (2) That the imitators are always the more defenceless. (3) That the imitators "are always less numerous in individuals. ( 4 ) That the imitators differ from the bulk of their allies. (5) That the imitation, however minute, is external and visible only, never extending to internal characters or to such as do not affect the external appearance.
Стр. 476 - These three distinct stages of progress from the inorganic world of matter and motion up to man, point clearly to an unseen universe — to a world of spirit, to which the world of matter is altogether subordinate.