Ragnarok : the age of fire and gravel

28 THE DRIFT.

But let us look at another point :

If the vast deposits of sand, gravel, clay, and bowlders, which are found in Europe and America, were placed there by a great continental ice-sheet, reaching down from the north pole to latitude 35° or 40°; if it was the ice that tore and scraped up the face of the rocks and rolled the stones and striated them, and left them in great sheets and heaps all over the land—then it follows, as a matter of course, that in all the regions equally near the pole, and equally cold in climate, the ice must have formed a similar sheet, and in like manner have torn up the rocks and ground them into gravel and clay. This conclusion is irresistible. If the cold of the north caused the ice, and the ice caused the Drift, then in all the cold north-lands there must have been ice, and consequently there ought to have been Drift. If we can find, therefore, any extensive cold region of the earth where the Drift is not, then we can not escape the conclusion that the cold and the ice did not make the Drift.

Let us see: One of the coldest regions of the earth is Siberia. It is a vast tract reaching to the Arctic Circle ; it is the north part of the Continent of Asia; it is intersected by great mountain-ranges. Here, if anywhere, we should find the Drift ; here, if anywhere, was the ice-field, “the sea of ice.” It is more elevated and more mountainous than the interior of North America where the driftdeposits are extensive; it is nearer the pole than New York and Illinois, covered as these are with hundreds of feet of débris, and yet there is no Drift in Siberia!

I quote from a high authority, and a firm believer in the theory that glaciers or ice-sheets caused the drift ; James Geikie says :

“Tt is remarkable that nowhere in the great plains of Siberia do any traces of glacial action appear to have