| → by drifted icebergs and coast-ice, 1859 1860 1861 1866 |
| rocks 1869 1872 |
|
| → with remarkable clearness 1859 1860 1861 1866 |
| OMIT 1869 1872 |
|
| → to come slowly 1859 1860 1861 1866 |
| slowly to come 1869 1872 |
|
| → arctic beings and ill-fitted for their former more temperate inhabitants, the latter would be supplanted and arctic productions 1859 1860 1861 1866 |
| the inhabitants of the north, they 1869 |
| the inhabitants of the north, these 1872 |
|
| → places. 1859 1860 1861 1866 |
| places of the former inhabitants of the temperate regions. 1869 1872 |
|
| → inhabitants of the more temperate regions would 1859 1860 1861 1866 |
| latter, 1869 1872 |
|
| → travel 1859 1860 1861 1866 |
| would travel further and further 1869 1872 |
|
|
by the vine and maize. Throughout a large part of the United States, erratic
and
scored
→by drifted icebergs and coast-ice,
plainly reveal a former cold period. |
|
| The former influence of the glacial climate on the distribution of the inhabitants of Europe, as explained
→with remarkable clearness
by Edward Forbes, is substantially as follows. But we shall follow the changes more readily, by supposing a new glacial period
→to come slowly
on, and then pass away, as formerly occurred. As the cold came on, and as each more southern zone became fitted for
→arctic beings and ill-fitted for their former more temperate inhabitants, the latter would be supplanted and arctic productions
would take
→places. The
→inhabitants of the more temperate regions would
at the same
→travel
southward, unless they were stopped by barriers, in which case they would perish. The mountains would become covered with snow and ice, and their former Alpine inhabitants would descend to the plains. By the time that the cold had reached its maximum, we should have
arctic fauna and flora, covering the central parts of Europe, as far south as the Alps and Pyrenees, and even stretching into Spain. The now temperate regions of the United States would likewise be covered by arctic plants and
and these would be nearly the same with those of Europe; for the present circumpolar inhabitants, which we suppose to have everywhere travelled southward, are remarkably uniform round the world. We may suppose that the Glacial period came on a little earlier or later in North America than in Europe, so will the southern migration there have been a little earlier or later; but this
no difference in the final result. |
|
| As the warmth returned, the arctic forms would retreat northward, closely followed up in their retreat by
|
