 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 - Page 1191860Full view - About this book
 | American essays - 1860 - 794 pages
...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, and plants from an equal or lessor number." Seeing that analogy as strongly suggests a further step in the same direction, while... | |
 | 1860 - 444 pages
...oecial study for twenty years, and whose opinions are of weigL ,, and worthy of consideration:—" I believe that animals have descended from at most only four or five progenitors, and plants me one step further, namely, to the belief that all animals and plants have descended from some one... | |
 | India - 1860 - 600 pages
...unscientific public. " I can" he says " believe that all animals have descended from ' almost only 4 or 6 progenitors, and plants from an equal or 'lesser number ; analogy would lead me one step farther, name' ly to believe that all plants and animals have descended from ' some one prototype,... | |
 | Crosthwaite and co - 1860 - 622 pages
...the orders of a class, are but the offspring from single primordial forms. " I believe," he says, " that animals have descended from at most only four or five progenitors, and plants from au equal or lesser number. Analogy would lead me one step further, namely, to the belief that all animal*... | |
 | American periodicals - 1860 - 894 pages
...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 - American periodicals - 1860 - 612 pages
...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... | |
 | 1860 - 446 pages
...Darwin thinks it proved that all animals have descended in one direct genealogical line " from at most four or five progenitors, and plants from an equal or lesser number ;" and probable that " all the organic oeings which have ever lived on this earth have descended from... | |
 | Richard Owen - Paleontology - 1861 - 490 pages
...primitive stocks, of which he enumerates " fifteen." Mr. Darwin, in the work above cited, is led to believe that " animals have descended from at most...and plants from an equal or lesser number. Analogy," he adds, " would lead me one step further, namely, to the belief that all animals and plants have descended... | |
 | Richard Owen - Extinct animals - 1861 - 552 pages
...primitive stocks, of which he enumerates " fifteen." Mr. Darwin, in the work above cited, is led to believe that " animals have descended from at most...progenitors, and plants from an equal or lesser number. Analog)-," he adds, " would lead me one step further, namely, to the belief that all animals and plants... | |
 | Carl Theodor A. Liebner - 1861 - 828 pages
...gorberungen unb Stufftettungen begegneten mit übrigen« bereite bei bem Slutor ber Vestiges, f. oben @. ') „I believe that animals have descended from at most...four or five progenitors, and plants from an equal or less number. — Analogy would lead me one step further, namely, to the belief that all animals ¡nul... | |
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