New England great stones of the glacial drift are found
which weigh from one thousand to seven thousand tons.
They are deposited in some cases on what is now the summit
of hills and mountains, showing how deep the sheet of
ice must have been that could thus cover the entire
surface of the country, burying alike the valleys and
the hills. The mass of ice that moved slowly, century by
century, across the face of Southern Canada to New England
is estimated to have been in places a mile thick. The
limit to which it was carried went far south of the
boundaries of Canada. The path of the glacial drift is
traced by geologists as far down the Atlantic coast as
the present site of New York, and in the central plain
of the continent it extended to what is now the state of
Missouri.

Facts seem to support the theory that before the Great
Ice Age the climate of the northern part of Canada was
very different from what it is now. It is very probable
that a warm if not a torrid climate extended for hundreds
of miles northward of the now habitable limits of the
Dominion. The frozen islands of the Arctic seas were once
the seat of luxurious vegetation and teemed with life.
On Bathurst Island, which lies in the latitude of 76
degrees, and is thus six hundred miles north of the Arctic
Circle, there have been found the bones of huge lizards
that could only have lived in the jungles of an almost
tropical climate.

We cannot tell with any certainty just how and why these