n some cases the amount of such change is so
small that geologists are reluctant to believe a vast lapse of time
has occurred since the glaciers withdrew. Mr. Geikie tells us of some
moraines in Scotland that they are so fresh and beautiful "that it is
difficult to believe they can date back to a period so vastly removed as
the Ice Age is believed to be."<34> In our own country this same sort of
evidence is brought forward, and we are given some special calculations
going to show that the disappearance of the glaciers was a comparatively
recent thing.<35>

It will be seen that these conclusions are somewhat opposed to the
results previously arrived at. In explanation Mr. Geikie thinks the
cases spoken of in Scotland were not the moraines of the great glaciers,
but of a local glacier of a far later date. He thinks that the climate,
while not severe enough to produce the enormous glaciers of early times,
was severe enough to produce local glaciers still in Scotland.<36> It
is possible that a similar explanation may be given for the evidence
adduced in the United States. We can only state that, according to
the difference in climate between the eastern and western sides of the
Atlantic Ocean, when the climate was severe enough to produce local
glaciers in Scotland, it would produce the same effect over a large part
of eastern United States down to the latitude of New York City.<37> And
while it is true there would not be as much difference in climate on the
two sides of the Atlantic in Glacial times as at present, since the Gulf
Stream, on which such difference depends would then have less force,
still it was not entirely lacking, and the difference must have been
considerable.<38>

Prof. Hitchcock has made a suggestion that whereas we know a period of
several months elapses after the sun crosses the equator before Summer
fairly comes on, so it is but reasonable to suppose that a proportionate
length of time would go by after the eccentricity of the earth's
orbit became small, before the Glacial Age would really pass away. He
accordingly suggests it may have been only about forty thousand years
since the glaciers disappeared.<39>

At the close of the Glacial Age Paleolithic man vanished from Europe.
This, therefore, brings us to the conclusion of our researches into what
is probably the most mysterious chapter of man's existence on the earth.

It may not come amiss to briefly notice the main points thus far made
in our