 | 1859 - 578 lehte
...one is considered to be a variety of the other. Which is the variety and which the original »pedes, there is generally no means of determining, except...itself and resembling the other. This, however, would веет quite incompatible with the "permanent invariability of species," but the difficulty is overcome... | |
 | Alfred Russel Wallace - 1870 - 414 lehte
...(although constantly) from some other race, that the one is considered to be a variety of the other. Which is the variety and which the original species,...strict limits, and can never again vary further from tho original type, although they may return to it, which, from the analogy of the domesticated animals,... | |
 | Michael Ferrebee Sadler - 1871 - 396 lehte
...structure and organisation given to it, and becomes," &c. Who gave these modifications ? Again, p. 27. " The difficulty is overcome by assuming that such varieties...never again vary further from the original type." Who assigned euch limits ? P. 49. " Now it is remarkable in how many cases nature But when the human... | |
 | Alfred Russel Wallace - 1871 - 490 lehte
...(although constantly) from some other race, that the one is considered to be a variety of the other. Which is the variety and which the original species, there is generally 110 means of determining, except in those rare cases in which thoone race has been known to produce... | |
 | Alfred Russel Wallace - 1891 - 516 lehte
...(although constantly) from some other race, that the one is considered to be a variety of the other. Which is the variety and which the original species,...incompatible with the "permanent invariability of species," OF VARIETIES, ETC. 23 overcome by assuming that such varieties »n<i can never again vary further from... | |
 | Alfred Russel Wallace - 2002 - 1002 lehte
...(although constantly) from some other race, that the one is considered to be a variety of the other. Which is the variety and which the original species,...but the difficulty is overcome by assuming that such Proceedings of the Linnean Society of London 3, no. 9 (1858):53-62. varieties have strict limits, and... | |
 | Alfred Russel Wallace - 2003 - 464 lehte
...(although constantly) from some other race, that the one is considered to be a variety of the other. Which is the variety and which the original species,...of determining, except in those rare cases in which one race has been known to produce an offspring unlike itself and resembling the other. This, however,... | |
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Equally general, however, is the belief in what are called " permanent or true varieties," — races of animals which continually propagate their like, but which differ so slightly (although constantly) from some other race, that the one is considered... 