Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 pages |
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Page 104
... Land and water have been continually shifting their positions ; some regions are undergoing subsidence with diminution of area , others elevation with extension of area ; dry land has been converted into marshes , while marshes have ...
... Land and water have been continually shifting their positions ; some regions are undergoing subsidence with diminution of area , others elevation with extension of area ; dry land has been converted into marshes , while marshes have ...
Page 105
... land is on the coast , insects which flew much would be very liable to be blown out to sea and lost . Year after year , therefore , those individuals which had shorter wings , or which used them least , were preserved ; and thus , in ...
... land is on the coast , insects which flew much would be very liable to be blown out to sea and lost . Year after year , therefore , those individuals which had shorter wings , or which used them least , were preserved ; and thus , in ...
Page 106
... land inhabited by them — which there is not - we must assume that , like the Madeiran insects , they were originally winged , and lost their power of flight because its possession was injurious to them . It is no doubt due to the same ...
... land inhabited by them — which there is not - we must assume that , like the Madeiran insects , they were originally winged , and lost their power of flight because its possession was injurious to them . It is no doubt due to the same ...
Page 110
... land sown with one or two species only ; and the same principle applies to rotation of crops , plants differing very widely from each other giving the best results . So , in small and uniform islands , and in small ponds of fresh water ...
... land sown with one or two species only ; and the same principle applies to rotation of crops , plants differing very widely from each other giving the best results . So , in small and uniform islands , and in small ponds of fresh water ...
Page 111
... land , the more widely and perfectly the animals and plants are diversified for different habits of life , so will a greater number of individuals be capable of there supporting themselves . " 1 The most closely allied Species inhabit ...
... land , the more widely and perfectly the animals and plants are diversified for different habits of life , so will a greater number of individuals be capable of there supporting themselves . " 1 The most closely allied Species inhabit ...
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Common terms and phrases
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
Popular passages
Page 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.
Page 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.
Page 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.
Page 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...
Page 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.
Page 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.
Page 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.
Page 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...
Page 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.
Page 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.