The Doctrine of Descent and DarwinismD. Appleton and Company, 1875 - Всего страниц: 334 |
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Стр. 8
... groups , and this in the manner offered by the historical development of science . What first strikes the observer of the animal world is , that it consists of apparently innumerable forms . The primary requirement is discrimination and ...
... groups , and this in the manner offered by the historical development of science . What first strikes the observer of the animal world is , that it consists of apparently innumerable forms . The primary requirement is discrimination and ...
Стр. 10
... group of animals , -how , for instance , the mammal passes through stages at which the lower vertebrata remain fixed , -a connection , at first sight POSITION OF PALEONTOLOGY . I I mysterious , is indicated ΙΟ THE DOCTRINE OF DESCENT .
... group of animals , -how , for instance , the mammal passes through stages at which the lower vertebrata remain fixed , -a connection , at first sight POSITION OF PALEONTOLOGY . I I mysterious , is indicated ΙΟ THE DOCTRINE OF DESCENT .
Стр. 11
... , the one indicated , is disputed only by naturalists , who , like Barrande , years ago anchored themselves to inalterable convictions in science , as in creed , to dogmas . These groups of facts , thus mutually referring to each.
... , the one indicated , is disputed only by naturalists , who , like Barrande , years ago anchored themselves to inalterable convictions in science , as in creed , to dogmas . These groups of facts , thus mutually referring to each.
Стр. 12
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. These groups of facts , thus mutually referring to each other , must be , in some degree , examined by any one desirous of understanding them . In other words , we must first review this vast ...
Dr. Schmidt (Eduard Oskar), Oscar Schmidt. These groups of facts , thus mutually referring to each other , must be , in some degree , examined by any one desirous of understanding them . In other words , we must first review this vast ...
Стр. 25
... groups of lower beings , which Haeckel has recently comprised under the name Protista , we see the pro- cesses of metamorphosis of tissue , nutrition , and repro- duction taking place , indeed , but in a manner so simple and ...
... groups of lower beings , which Haeckel has recently comprised under the name Protista , we see the pro- cesses of metamorphosis of tissue , nutrition , and repro- duction taking place , indeed , but in a manner so simple and ...
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Часто встречающиеся слова и выражения
according adaptation already Ammonites Amphibians animal world apes appearance Ascidian become birds brain causes Cetacea character characteristics comparative anatomy complete connection continent Darwin dentition derivation diverge doctrine of Descent Echinoderms embryonic Eocene exhibit 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 intermediate forms islands lancelet language larva larvæ likewise linguistic Linnæus 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 sponges strata structure systematic terrestrial animals Tertiary theory of selection tion transformation transition true Ungulata Ungulates varieties vegetal 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 - I had not formerly sufficiently considered the existence of many structures which appear to be, as far as we can judge, neither beneficial nor injurious ; and this I believe to be one of the greatest oversights as yet detected in my work.
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.