Organic Evolution: A Text-bookMacmillan, 1917 - Всего страниц: 729 |
Содержание
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Часто встречающиеся слова и выражения
adaptation adaptive radiation adult aërial Africa amphibia ancestral ancient animals aquatic aquatic adaptation arboreal become birds body bones camel carnivorous cave cells Chapter characteristics characters climate color comparable creatures Cretaceous cursorial Darwin desert developed digits dinosaurs elephant elongated entire Eocene epigean evidence evolution evolutionary existence extinct fauna feet female fins fishes flight flying foot fore forms fossil fossorial genera genus geologic gills habitat hand hence hind limbs horse ichthyosaurs increase insects instance known land larvæ later living lizards lower male mammals marine marsupials mastodons Mesozoic migration Miocene modification molars muscles Museum natural selection North America notochord Oligocene organs origin Osborn pair Paleozoic parasitic patagium plants Pleistocene Pliocene primitive proboscidean protoplasm race realm reptiles sexual shell skeleton skull species structure surface tail teeth terrestrial theory tion tooth trees true tusks types ungulates upper variation vertebrates whales wings
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Стр. 149 - And he set the rods which he had pilled before the flocks in the gutters in the watering troughs when the flocks came to drink, that they should conceive when they came to drink.
Стр. 3 - The result, therefore, of this physical inquiry is, that we find no vestige of a beginning, — no prospect of an end"§.
Стр. 109 - Near villages and small towns I have found the nests of humblebees more numerous than elsewhere, which I attribute to the number of cats that destroy the mice.
Стр. 10 - Lamarck (1744-1829) was one of the most remarkable as well as one of the most pathetic figures in evolutionary history.
Стр. 9 - ... all animals undergo perpetual transformations; which are in part produced by their own exertions in consequence of their desires and aversions, of their pleasures and their pains, or of irritations, or of associations; and many of these acquired forms or propensities are transmitted to their posterity.
Стр. 279 - The solution, as I believe, is that the modified offspring of all dominant and increasing forms tend to become adapted to many and highly diversified places in the economy of nature.
Стр. 27 - ... of California, towering to the dimensions of a cathedral spire, or the Indian fig, which covers acres with its profound shadow, and endures while nations and empires come and go around its vast circumference. Or, turning to the other half of the world of life, picture to...
Стр. 16 - The world has been evolved, not created; it has arisen little by little from a small beginning, and has increased through the activity of the elemental forces embodied in itself, and so has rather grown than suddenly come into being at an almighty word. What a sublime idea of the infinite might of the great Architect! the Cause of all causes, the Father of all fathers, the Ens entium! For if we could compare the Infinite it would surely require a greater Infinite to cause the causes of effects than...
Стр. 655 - Perhaps no order of mammals presents us with so extraordinary a series of gradations as this— leading us insensibly from the crown and summit of the animal creation down to creatures, from which there is but a step, as it seems, to the lowest, smallest, and least intelligent of the placcntal Mammalia.
Стр. 348 - I believe that albatrosses move their wings much oftener than is suspected. They often have the appearance of soaring for long periods after a ship without flapping their wings at all, but if they be very closely watched, very short but extremely quick motions of the wings may be detected. The appearance is rather as if the body of the bird dropped a very short distance and rose again. The movements cannot be seen at all unless the bird is exactly on a level with the eye. A very quick stroke, carried...