Distinguished as is this elevated region of the surface of Central India, its summit is but little higher than the general elevation of the crest of the Vindhya, and upon a level with the valley of Udaipur and base of the Aravalli. The slope or descent, therefore, from both these ranges to the skirts of the plateau is great and abrupt, of which the most intelligible and simple proof appears in the course of these streams. Few portions of the globe attest more powerfully the force exerted by the action of waters to subdue every obstacle, than a view of the rock-bound channels of these streams in this adamantine barrier. Four streams—one of which, the Chambal, would rank with the Rhine and almost with the Rhone—have here forced their way, laying bare the stratification from the water’s level to the summit, from three to six hundred feet in perpendicular height, the rock appearing as if chiselled by the hand of man. Here the geologist may read the book of nature in distinct character; few tracts (from Rampura to Kotah) will be found more interesting to him, to the antiquarian, or to the lover of nature in her most rugged attire. The surface of this extensive plateau is greatly diversified. At Kotah the bare protruding rock in some places presents not a trace of vegetation; but where it bevels off to the banks of the Par it is one of the richest and most productive soils in India, and better cultivated than any spot even of British India. In its indented sides are glens of the most romantic description (as the fountain of ‘the snake King’ near Hinglaj), and deep dells, the source of small streams, where many treasures of art,[1.39] in temples and ancient dwellings, yet remain to reward the traveller [15]. This central elevation, as before described, is of the secondary formation, called trap. Its prevailing colour, where laid bare by the Chambal, is milk-white: it is compact and close-grained, and though perhaps the mineral offering the greatest resistance to the chisel, the sculptures at the celebrated Barolli evince its utility to the artist. White is also the prevailing colour to the westward. About Kotah it is often mixed white and porphyritic, and about Shahabad of a mixed red and brown tint. When exposed to the action of the atmosphere in its eastern declivity the decomposed and rough surface would almost cause it to be mistaken for gritstone. This formation is not favourable to mineral wealth. The only metals are lead and iron; but their ores, especially the latter, are abundant. There are mines, said to be of value, of sulphuret of lead (_galena_) in the Gwalior province, from which I have had specimens, but these also are closed. The natives fear to extract their mineral wealth; and though abounding in lead, tin, and copper, they are indebted almost entirely to Europe even for the materials of their culinary utensils.