We may understand why the species of the same genus, or genera of the…

the extension of the sea had been greater at some former periods

Pallas, in more recent times, has drawn the same inference.

The first who endeavored to draw a clear line of demarcation between these distinct departments, was Hutton, who declared that geology was in no ways concerned with 'questions as to the origin of things.

in the form of the coasts of Asia, and

important changes had taken place

This doctrine, it is true, had been laid down in terms almost equally explicit by Strabo, to explain the occurrence of fossil shells in the interior of continents, and to that geographer, and other writers of antiquity, Hooke frequently …