The importance of glacier agency in the past as well as the present
condition of the earth, is undoubtedly very great. One of our most
accomplished and ingenious geologists has, indeed, carried back the
existence of Glaciers to an epoch of dim antiquity, even in the
reckoning of that science whose chronology is counted in millions of
years. Professor Ramsay has shown ground for believing that in the
fragments of rock that go to make up the conglomerates of the Permian
strata, intermediate between the Old and the New Red Sandstone, there
is still preserved a record of the action of ice, either in glaciers
or floating icebergs, before those strata were consolidated.--_Saturday
Review_, No. 142.