[1. "Earth and Man," p. 264.

2. "The Last of the Arctic Voyages," vol. i, p. 380.]

{p. 46}

One writer says:

"The glacial action, in the opinion of the land-glacialists, was
limited to a _definite period_, and operated _simultaneously_ over a
vast area."[1]

And again:

"The drift was accumulated where it is by some violent action."[2]

Louis Figuier says:

"The two cataclysms of which we have spoken surprised Europe at the
moment of the development of an important creation. The whole scope
of animated nature, the evolution of animals, was _suddenly arrested_
in that part of our hemisphere over which these gigantic convulsions
spread, followed by the brief but sudden submersion of entire
continents. Organic life had scarcely recovered from the violent
shock, when a second, and perhaps severer blow assailed it. The
northern and central parts of Europe, the vast countries which extend
from Scandinavia to the Mediterranean and the Danube, were visited by
a period of sudden and severe cold; the temperature of the polar
regions seized them. The plains of Europe, but now ornamented by the