Dropping history, and returning to its interest otherwise, the Forest of Dean claims attention from peculiarities of many kinds. Geologically regarded, it is an outlier of the carboniferous system of South Wales, from which it is separated by a breadth of the Devonian that has been denuded between--so widely separated as to have similitude to an island in the far-off ocean. An elevated island, too, rising above the "Old Red," through successive strata of shales, mountain limestone, and millstone grit, to nearly a thousand feet higher than the general level of the surrounding _terrain_. Towards this, on every side, and all round for miles and tens of miles, it presents a _facade_ not actually precipitous, but so steep and difficult of ascent as to make horses breathe hard climbing it; while in loaded cart or wagon, teams have to be doubled. Just such a "pitch" was that on whose top the bitter war of words between Eustace Trevor and Sir Richard Walwyn had come to blows. But, though thus high in air, the Forest of Dean does not possess the usual characteristics of what are termed _plateaux_, or elevated tablelands. As a rule these show a level surface, or with but gentle undulations, while that of the Forest is everywhere intersected by deep valleys and ravines. A very interesting geological fact is offered in the surface formation of this singular tract of country, its interior area being in most places much lower than the rim around it. The peculiarity is due to the hard carboniferous limestone, which forms its periphery, having better resisted denudation than the softer matrix of the coal measures embraced by it. The disintegrating rains, and the streams, often torrents, their resulting sequence, have here and there cut channels of escape outward-- some running west into the Wye, some eastward to espouse the Severn. Very different is the Forest of Dean now from what it was in those days of which this tale treats--territorially more restricted, both in its boundaries and the area once bearing its name. Then it extended over the whole triangular space between the two great rivers, from the towns of Ross and Gloucester down to their union in the wide sea-like estuary of the Severn. Changed, too, in the character of its scenery. Now, here and there, a tall chimney may be seen soaring up out of its greenery of trees, and vomiting forth volumes of murky smoke, in striking disagreeable contrast with their verdure. Then there was nothing of this kind;--at least nothing to jar upon the mind, or mar the harmony of nature. Then, too, it was a real forest of grand old trees, with a thick tangle of underwood, luxuriant and shady. For the Court favourite, Sir John Wintour, had not yet wasted it with his five hundred woodcutters, all chopping and hacking away at the same time. It was only after the Restoration he did that; the robber's monopoly granted him by the "Martyr King" having been re-bestowed by the "Merry Monarch."