 ... circumstances, and the blank intervals between the successive stages as having been of vast duration. But we shall be able to gauge with some security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We...  The American Naturalist - Pàgina 4671877Visualització completa - Sobre aquest llibre
 | Charles Darwin - 1861 - 470 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as...produced and exterminated by slowly acting and still existing causes, and not by miraculous acts of creation and by catastrophes ; and as the most important... | |
 | Charles Darwin - 1864 - 472 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as...produced and exterminated by slowly acting and still existing causes, and not by miraculous acts of creation and by catastrophes ; and as the most important... | |
 | Charles Darwin - 1866 - 668 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as...identical species, by the general succession of their fornls of life. As species are produced and exterminated by slowly acting and still existing causes,... | |
 | Charles Darwin - 1875 - 504 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as strictly contemporaneous two formations, which do not include many identical species, by the general succession of the forms of life. As species are... | |
 | Charles Darwin - 1896 - 360 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as strictly contemporaneous two formations, which do not include many identical species, by the general succession of the forms of life. As species are... | |
 | 1902 - 200 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as strictly contemporaneous two formations, which do not include many identical species, by the general succession of the forms of life. As species are... | |
 | 1902 - 200 pàgines
...contemporaneous two formations, which do not include many identical species, by the general succession of the forms of life. As species are produced and exterminated by slowly acting and still existing causes, and not by miraculous acts of creation ; and as the most important of all causes of... | |
 | Charles Darwin - 1909 - 584 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as strictly contemporaneous two formations, which do not include many identical species, by the general succession of the forms of life. As species are... | |
 | Sir Charles Lyell - 1911 - 750 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate, as strictly contemporaneous, two formations, which do not include many identical species, by the general succession of the forms of life. As species are... | |
 | Charles Darwin - 1996 - 382 pàgines
...security the duration of these intervals by a comparison of the preceding and succeeding organic forms. We must be cautious in attempting to correlate as...produced and exterminated by slowly acting and still existing causes, and not by miraculous acts of creation and by catastrophes; and as the most important... | |
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