'The light again brightens--it is day; and over an expanse of ocean, without visible bound, the horizon has become wider and sharper of outline than before. There is life in that great sea--invertebrate, mayhap also ichthyic, life; but, from the comparative distance of the point of view occupied by the prophet, only the slow roll of its waves can be discerned, as they rise and fall in long undulations before a gentle gale; and what most strongly impresses the eye is the change which has taken place in the atmospheric scenery. That lower stratum of the heavens occupied in the previous vision by seething steam, or grey, smoke-like fog, is clear and transparent; and only in an upper region, where the previously invisible vapour of the tepid sea has thickened in the cold, do the clouds appear. But there, in the higher strata of the atmosphere they lie, thick and manifold--an upper sea of great waves, separated from those beneath by the transparent firmament, and, like them too, impelled in rolling masses by the wind. A mighty advance has taken place in creation; but its most conspicuous optical sign is the existence of a transparent atmosphere--of a firmament stretched out over the earth, that separates the water above from the waters below. But darkness descends for the third time upon the seer, for the evening and the morning have completed the second day. 'Yet again the light rises under a canopy of cloud, but the scene has changed, and there is no longer an unbroken expanse of sea. The white surf breaks, at the distant horizon, on an insulated reef, formed mayhap by the Silurian or Old Red coral zoophytes ages before, during the bygone yesterday; and beats in long lines of foam, nearer at hand, against the low, winding shore, the seaward barrier of a widely-spread country. For at the Divine command the land has arisen from the deep--not inconspicuously and in scattered islets, as at an earlier time, but in extensive though flat and marshy continents, little raised over the sea-level; and a yet further fiat has covered them with the great carboniferous flora. The scene is one of mighty forests of cone-bearing trees--of palms and tree-ferns, and gigantic club-mosses, on the opener slopes, and of great reeds clustering by the sides of quiet lakes and dark rolling rivers. There is a deep gloom in the recesses of the thicker woods, and low, thick mists creep along the dank marsh or sluggish streams. But there is a general lightening of the sky overhead; as the day declines, a redder flash than had hitherto lighted up the prospect falls athwart fern-covered bank and long withdrawing glade. And while the fourth evening has fallen on the prophet, he becomes sensible, as it wears on, and the fourth day approaches, that yet another change has taken place.