 | 1860 - Страниц: 566
...ideas of the affinities and relationships of animal groups obtained by subsequent induction, says : ' I believe that animals have descended ' from at most only four or five progenitors,' [evidently meaning, or answering to, the type-forms of the four or five ' sub-kingdoms' in modern zoology],... | |
 | Berwickshire Naturalists' Club (Scotland) - 1885 - Страниц: 730
...formed on the same pattern, and at an embrionic age the species closely resemble each other. Therefore I cannot doubt that the theory of descent with modification...members of the same class. I believe that animals have desconded from at most only four or five progenitors, and plants from an equal or less number. " Analogy... | |
 | 1860 - Страниц: 800
...do with it ? " and " How far will he carry it ? " the author answers at the close of the volume : " I cannot doubt that the theory of descent with modification embraces all the members of the same class." Furthermore, " I believe that all animals have descended from at most only four or five progenitors,... | |
 | 1860 - Страниц: 612
...formed on the same pattern, and at ac embrjonic age the species closely resemble each other. Therefore I cannot doubt that the theory of descent with modification embraces all the members of the same class. I belieTe that animals have descended from at most only four or fire progenitors, and plaats from an... | |
 | 1860 - Страниц: 794
...do with it ?" and " How far will he carry it ? " the author answers at the close of the volume : " I cannot doubt that the theory of descent with modification embraces all the members of the same class." Furthermore, " I believe that all animals have descended from at most only four or five progenitors,... | |
 | 1860 - Страниц: 982
...for the formation of genera, families, orders, and even classes, by natural selection. He does " not doubt that the theory of descent with modification embraces all the members of the same class," and he concedes that analogy would press the conclusion still farther ; while he admits that " the... | |
 | 1860 - Страниц: 894
...ideas of the affinities and relationships of animal groups obtained by subsequent induction, says: "I believe that animals have descended from at most only four or five progenitors," [evidently meaning, or answering to, the type forms of the four or five " sub-kingdoms " in modern... | |
 | John Holmes Agnew, Walter Hilliard Bidwell, Henry T. Steele - 1860 - Страниц: 612
...gradually produce another species, but he extends this doctrine, " to all members of the same close " ; " I believe that animals have descended from at most only four or five progenitors, ami plants from an equal or lesser number Analogy would lead me one step further. namely, to the belief... | |
 | Asa Gray - 1861 - Страниц: 68
...with it ? " and " How far will he carry it ? " the author answers at the close of the volume : — " I cannot doubt that the theory of descent with modification embraces all the members of the same class." Furthermore, "I believe that all animals have descended from at most only four or five progenitors,... | |
 | Samuel Wainwright - 1865 - Страниц: 510
...actual fact, are not to be found. Their place has to be supplied by conjecture. Thus eg, Mr. Darwin says, " I cannot doubt that the theory of descent...modification embraces all the members of the same class."" And again: "I can indeed hardly doubt that all vertebrate animals having true lungs, have descended,... | |
| |
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. 
