I cannot doubt that the theory of descent with modification embraces all the members of the same great class or kingdom. I believe that animals are descended from at most only four or five progenitors, and plants from an equal or lesser number. The Canadian Naturalist and Geologist - Стр. 1191860Полный просмотр - Подробнее о книге
| 1867 - Страниц: 830
...of the organic kingdoms is composed of the modified descendants of a common ancestor, he believes " that animals have descended from at most only four...progenitors, and plants from an equal or lesser number." * But he is inclined to go further, and it does not seem to him incredible "that from some such low... | |
| John Crawfurd - 1868 - Страниц: 76
...progenitor or prototype. ' I cannot doubt,' says Mr. Darwin, ' that the theory of descent by gradation embraces all the members of the same class. I believe...four or five progenitors, and plants from an equal or even lesser number.' He is, indeed, disposed to go further than this, and to derive all organised beings... | |
| 1869 - Страниц: 844
...afraid to say extraordinary instead of " ordinary" ? CRE.YTIOX OF FIRST GERMS. Mr. Darwin believes that animals have descended from at most only four...progenitors, and plants from an equal or lesser number. As to the first origin of these, he considers the question to be at present quite beyond the scope... | |
| 1869 - Страниц: 632
...theory ! And this is called science ! Mr. Darwin states his theory in two forms on the same page. " I believe that animals have descended from at most...four or five progenitors, and plants from an equal or less number." " Therefore I should infer from analogy that probably all the organized beings which... | |
| 1869 - Страниц: 688
...that the transmutation doctrine must involve man ; eg, in the sweeping admission that all existing animals have descended from, at most, only four or five progenitors ; and that analogy would even lead to the inference that " all the organic beings which have ever lived on... | |
| 1869 - Страниц: 590
...class. I believe that animalhave descended from at most only four or live progenitors, aud plants froa an equal or lesser number. Analogy would lead me one step further, та. to believe that all animals and plants have descended from one prototype. ... I should infer... | |
| 1866 - Страниц: 694
...own showing, merely a fanciful hypothesis. He accounts for the origin of creation as follows : — " I believe that animals have descended from at most...four or five progenitors, and plants, from an equal ur less number. Therefore I should infer, from analogy, that probably all the organic beings which... | |
| 1870 - Страниц: 976
...specie's in the scientific meaning of the term, but also genera and families and orders ; so that all " animals have descended from at most only four or five...progenitors, and plants from an equal or lesser number. I shall here omit all notice of plants, for the truth of the hypothesis can be tested as surely and... | |
| 1870 - Страниц: 400
...may have descended through different lines from the common blue rock-pigeon, he concludes that all animals " have descended from at most only four or...progenitors, and plants from an equal or lesser number." He says, moreover, " Analogy would lead me a step further, namely, to the belief that all animals and... | |
| John Henry Pratt - 1871 - Страниц: 458
...his book — On the ORIGIN of Species. But they are fully expressed in the following words : — ' I believe that animals have descended from at most...progenitors, and plants from an equal or lesser number. ... I should infer from analogy, that probably all the organic beings [plants and animals] which have... | |
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