Direct proof may be given that some parts of the land of the northern
hemisphere are at this moment insensibly rising and others insensibly
sinking; and there is indirect, but perfectly satisfactory, proof, that
an enormous area now covered by the Pacific has been deepened thousands
of feet, since the present inhabitants of that sea came into existence.
Thus there is not a shadow of a reason for believing that the physical
changes of the globe, in past times, have been effected by other than
natural causes.