There are signs accumulating everywhere that the views so logically pressed to their conclusion by Hutton and Playfair, and by a great catena of geologists, since the appearance of the first edition of Lyell's “Principles of Geology,” have received a certain check; and no one can read the works of the great Continental geologists without seeing that there is a tendency to reconsider the position, and to hark back to the views of another school of teachers.