Hypotheses of Continental Drift

Abstract

IN many recent discussions of Wegener's theory and of other geological hypotheses, the assumption has been freely made that any force, however small, can deform the earth to any assignable extent if only it acts long enough. To declare that this assumption is incorrect is scarcely possible, in the absence of much more accurate knowledge of the physical conditions within the earth than we at present possess; but there is substantial evidence against it.