only requires the use of a little imagination to conjure up scenes of the past, and paint them as on a moving diorama.

We shall not, however, dwell at any length on the scenery, or the vegetation that clothed the landscape at different periods; for these features are sufficiently indicated in the beautiful drawings of extinct animals by our artist, Mr. J. Smit.

The researches of the illustrious Baron Cuvier, at Paris, as embodied in his great work, Ossemens Fossiles, gave a great impetus to the study of organic remains. It was he who laid the foundations of the science of Palæontology,[2] which, though much has already been accomplished, yet has a great future before it. Agassiz, Owen, Huxley, Marsh, Cope, and others, following in his footsteps, have greatly extended its boundaries; but he was the pioneer.