The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 29
... remarkable . Independently of the generative organs , consisting of manifold parts of greater or less importance , the history of the multiplication and development of the bee de- mands a study of itself . The function , and therewith ...
... remarkable . Independently of the generative organs , consisting of manifold parts of greater or less importance , the history of the multiplication and development of the bee de- mands a study of itself . The function , and therewith ...
Стр. 45
... remarkable movements of pro- toplasm . The germ - cells of different classes of animals vary considerably in their microscopic dimensions ; nevertheless , in the whole animal kingdom , from the sponges and polypes up to the mammals ...
... remarkable movements of pro- toplasm . The germ - cells of different classes of animals vary considerably in their microscopic dimensions ; nevertheless , in the whole animal kingdom , from the sponges and polypes up to the mammals ...
Стр. 75
... remarkable variation of the Sauroid type , the winged lizard or Pterodactyl . It is evident from their well - preserved skeletons that the wing membrane was stretched , as in the bat , between the posterior and anterior extremities ...
... remarkable variation of the Sauroid type , the winged lizard or Pterodactyl . It is evident from their well - preserved skeletons that the wing membrane was stretched , as in the bat , between the posterior and anterior extremities ...
Стр. 76
... the older fossiliferous strata both divisions are abundantly repre- * Bulletin de la Société des Sciences Naturelles de Neufchâtel , IX . 2 . sented . A highly remarkable and important interme- diate form 76 THE DOCTRINE OF DESCENT .
... the older fossiliferous strata both divisions are abundantly repre- * Bulletin de la Société des Sciences Naturelles de Neufchâtel , IX . 2 . sented . A highly remarkable and important interme- diate form 76 THE DOCTRINE OF DESCENT .
Стр. 77
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. sented . A highly remarkable and important interme- diate form is also known , found in the upper Silurian strata of Dudley ( Eucladia Johnsoni ) , the more impor- tant as but few transitional ...
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. sented . A highly remarkable and important interme- diate form is also known , found in the upper Silurian strata of Dudley ( Eucladia Johnsoni ) , the more impor- tant as but few transitional ...
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according adaptation already Ammonites Amphibians animal world apes appearance Ascidian become birds brain carboniferous causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryonic Eocene exhibit existence external facts families fauna fish formation fossil Ganoids Gastrula genera genus geological Goethe grade gradually groups Haeckel heredity higher horse human hypothesis idea individual infer Insectivora intermediate forms islands lancelet language larva larvæ likewise linguistic lower mammals Marsupials Medusa ment merely metamorphosis modifications morphological mutability natural selection observation Oolite organisms origin peculiar pedigree perfect period phase phenomena placenta plants polypes possess present primordial progenitors races relations remains reproduction reptiles resemblance Rütimeyer says scarcely scientific separate sexual Silurian skull species strata structure systematic terrestrial animals Tertiary theory of selection tion transformation transition true Ungulata Ungulates varieties vertebral column Vertebrata vertebrate animals whole
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Стр. 162 - There is grandeur in this view of life, with its several powers, having been originally breathed by the Creator into a few forms or into one; and that, whilst this planet has gone cycling on according to the fixed law of gravity, from so simple a beginning endless forms most beautiful and most wonderful have been, and are being evolved.18 Darwin always knew that his views would be controversial. A few days before The Origin of Species appeared, Darwin wrote, in a letter to Wallace, 'God knows what...
Стр. 160 - Na'geli on plants, and the remarks by various authors with respect to animals, more especially those recently made by Professor Broca, that in the earlier editions of my Origin of Species I perhaps attributed too much to the action of natural selection or the survival of the fittest.