Hence, perhaps, it comes that the flora of Madeira, according to Oswald Heer, resembles the extinct tertiary flora of Europe. | Hence, perhaps, it comes that the flora of Madeira, according to Oswald Heer, resembles the extinct tertiary flora of Europe. 1860 |
| On a small island, the race for life will have been less severe, and there will have been less modification and less exter- mination. 1859 |
| On a small island, the race for life will have been less severe, and there will have been less modification and less extermination. 1861 1866 1869 1872 |
| All fresh-water basins, taken together, make a small area compared with that of the sea or of the land; and, consequently, the competition between fresh-water productions will have been less severe than elsewhere; new forms will have been more slowly formed, and old forms more slowly exterminated. 1860 |
| Hence, perhaps, it comes that the flora of Madeira, according to Oswald Heer, resembles the extinct tertiary flora of Europe. 1859 1861 1866 |
| Hence, perhaps, it is that the flora of Madeira, according to Oswald Heer, resembles the extinct tertiary flora of Europe. 1869 |
| Hence, we can understand how it is that the flora of Madeira, according to Oswald Heer, resembles to a certain extent the extinct tertiary flora of Europe. 1872 |
| And it is in fresh water that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some 1860 |
| All fresh-water basins, taken together, make a small area compared with that 1859 1861 1866 1869 1872 |
| most anomalous forms now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders now widely separated in the natural scale. 1860 |
| sea or of the land; and, consequently, the competition between fresh-water productions will have been less severe than elsewhere; new forms will have been more slowly formed, and old forms more slowly exterminated. 1859 1861 1866 1869 |
| sea or of the land. Consequently, the competition between fresh-water productions will have been less severe than elsewhere; new forms will have been then more slowly produced, and old forms more slowly exterminated. 1872 |
| These 1860 |
| And it is in fresh water that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some of the most 1859 1861 1866 1869 |
| And it is in fresh-water basins that we find seven genera of Ganoid fishes, remnants of a once preponderant order: and in fresh water we find some of the most 1872 |
| may almost be called living fossils; they have endured to the present day, from having inhabited a confined area, and from having thus been exposed to less severe competition. 1860 |
| now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders now widely separated in the natural scale. 1859 1861 1866 |
| now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders at present widely separated in the natural scale. 1869 |
| now known in the world, as the Ornithorhynchus and Lepidosiren, which, like fossils, connect to a certain extent orders at present widely sundered in the natural scale. 1872 |
| 1 blocks not present in 1860; present in 1859 1861 1866 1869 1872 | | These anomalous forms may almost
be called living fossils; they have endured to the present day, from having inhabited a confined area, and from
having thus
been exposed to less severe
competition.
|
|
To sum
up the circumstances favourable and unfavourable to natural selection, | up the circumstances favourable and unfavourable to natural selection, 1859 1860 1861 1866 |
| up the circumstances favourable and unfavourable for the production of new species through natural selection, 1869 |
| up, 1872 |
| permits. 1859 1860 1861 1866 1869 |
| permits, the circumstances favourable and unfavourable for the production of new species through natural selection. 1872 |
| conclude, 1859 1860 | | conclude 1861 1866 1869 1872 |
| looking to the future, 1859 1860 |
| OMIT 1861 1866 1869 1872 |
| which 1859 1860 1861 1866 1872 | | which, 1869 |
| will probably 1859 1860 | | has 1861 1866 1869 1872 |
| undergo 1859 1860 | | undergone 1861 1866 1869 1872 |
| and which consequently will exist for long periods in a broken condition, is 1860 |
| and which consequently will exist for long periods in a broken condition, will be 1859 |
| and which consequently has existed for long periods in a broken condition, has been 1861 1866 |
| will have been 1869 1872 |
| likely 1859 1860 | | fitted 1861 1866 1869 1872 |
| long 1859 1860 1861 1866 |
| for a long time 1869 1872 |
| For 1859 1860 1861 1866 | | Whilst 1869 1872 |
| first 1860 1861 1866 |
| will first have 1859 |
| OMIT 1869 1872 |
| and 1859 1860 1861 1866 | and 1869 1872 |
| inhabitants, 1859 1860 1861 1866 | | inhabitants 1869 1872 |
| at this period 1859 1860 1861 1866 |
| will have been 1869 1872 |
| will 1859 1860 1861 1866 | | and will 1869 1872 |
| very 1859 1860 1861 | very 1866 1869 1872 |
| exist 1859 1860 | | have existed 1861 1866 1869 1872 |
| island: 1859 1860 1861 1866 1869 | | island; 1872 |
| species will thus be 1859 1860 |
| species will thus have been 1861 1866 |
| new species will have been 1869 1872 |
| checked: 1859 1860 1861 1866 1869 | | checked; 1872 |
| be pre- 1859 1860 | | have been 1861 1866 1869 1872 |
|
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