Page:The origin of continents and oceans - Wegener, tr. Skerl - 1924.djvu/135

Rh discover how far improvements result from the application of the displacement theory. This work has not yet been carried out with the required care, but I hope to be able to accomplish it in the not far distant future in another publication written in conjunction with W. Köppen. The results of a provisional survey of only the most striking evidences of climate which were set out in detail in the previous (second) edition of this book are here reproduced so as to give a general idea of their nature. It is to be anticipated that the proposed detailed work will lead to a modification of these figures, yet no ground exists for supposing that they will be radically changed. I obtain the following position of the North and South Poles with reference to the present system of co-ordinates, with Africa supposed to be stationary:— The figures in the last column indicate in which geographical latitude any place in Germany in the present latitude 50° might be found in the course of geological time. This is illustrated in Fig. 19 below.

The Quaternary glaciation of North Europe and North America will now be given a brief treatment,