Nor is there any sign of moraines, glacier-scorings or other traces of the ice-age.
The ice-age might once more be renewed and wipe out our civilization.
We turn now to consider the effect of the great Ice-Age, and the relation of man to it.
A full description of the effect of the great Ice-Age would occupy a volume.
The chief point to be determined is not whether man did or did not precede the Ice-Age.
However that may be, the Ice-Age would restrict all the Primates to the south.
It is now generally held that there were more than one ice-age, with inter-glacial breaks.
Here the glaciers of the ice-age polished the rock wall—“the most remarkable example of ice-action in the Alps.”
The last great selection, the northern Ice-Age, will give the last touches of modernisation.
Modern geologists speak rather of a series of successive ice-sheets than of one definite Ice-Age.