Chapter V: Remarks on Theories Advanced for Explaining Ice Periods, 76–93

Professor Geikie on supposed causes of the glacial period,
76; change in the relative level of the land and sea
during glacial and post-glacial times, 77; submergence
of northern lands at close of ice age, 78; the main
cause of the movement of water from the northern seas
at the close of glacial age, 79; why the earth-movement
hypothesis should be rejected, 79; glaciers of Europe
and Alaska, 80; North Pacific currents, 81; why the
Pacific waters are growing cool, 82; the lowering
temperature of the northern seas, 83; the increase of
cold in Europe and Asia, 84; falling temperature of
the Andean region, 85; General Drayson’s astronomical
discoveries for explaining the cause of ice periods,
87; why the Gulf Stream was always confined to the
North Atlantic, 89; the improbability of the Indian
Ocean currents entering the arctic seas, 90; why the
increase of glaciers must continue while the Cape Horn
channel maintains its present capacity, 91; comments on
the coming ice age, 92; tropical zone the abode of man
during ice age, 93; preservation of the tropical ocean
fauna through the glacial period, 93.