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into its domain, has been seriously underrated by
Mr. Geikie and others who agree with him
concerning the great seaward extension of the ancient
land ice.
The glaciers that filled the Saltenfjord, the
Skjerstadtfjord, the Sor Folden, and all the other
inlets of the coast must have attained a great
magnitude in order to plane down the fringe of
rocks that extend from the coast to ten miles
beyond, but they were insufficient to push so far
as fifty miles out and overflow the southernmost
rocks of the Lofodens, unless we suppose the
submergence of the land to have been so great that
the out-thrust mer de glace floated over these low
rocks without grazing them. Even on this
supposition it must have thinned out very considerably
to account for the difference between its action in
the distant and the near rocks of equal elevation.
This thinning out has an important, I may say,
fundamental bearing upon all the theories
connected with this subject, by showing that even at
the bitterest period of greatest European glaciation
the waters of the ocean within the Arctic circle were
warm enough to thaw with considerable rapidity the
ice which had been accumulated on the mountains and
in the valleys of the land.
I argued long ago, i. e. when the first edition of
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