Penrith looks as a child's toy village; and Windsor and Richmond, far away, are but indistinct white dots. All quiet, tame, prosperous, and very simply beautiful below; all above and beyond wild and rugged, and, in the commercial sense, unprofitable. As marvellous a contrast as could be imagined, the beginning and the end apparently of new orders, the results of different forces, the work of the earth spent in opposite moods. One must needs marvel in contrasting such scenes, and more profound becomes the marvel and the wonderment, as with every mile a vaster, wilder, grander region is found. Cliff-faces leagues long, and a thousand feet perpendicular; huge basins, like veritable gulfs in space, where a firmament of blue gathers between the rocky mountain head and the forest growth below, isolated rocks that dwarf all monuments reared in any city of old; deep calling unto deep in innumerable waterfalls, and through all the summer months frequent thunder, as if the spirits who had wrought their marvels below were still toiling at some other labour in mid-air. The meanest mind becomes expanded in wonder, and the least philosophical instinct begins to speculate and inquire. There has, indeed, been much deep speculation, much zealous and competent inquiry as to the phenomena of these mountains, and the startling contrast upon their southern front. Tennison-Woods studied and wrote of them, and more recently Dr. J. E. Taylor has, in a few graphic sentences, expressed his opinions of the geological changes which have taken place, particularly of the changes and causes which have produced the fertile plains and the hills, whose chief present product is ozone, with the river rolling between. Having touched lightly upon the facts generally known of the Hawkesbury sandstone formation, overlaid on a great breadth of the county of Cumberland by the Wianamatta shales, he says:-- 'But the continuity of both the Hawkesbury sandstones and the overlying and usually accompanying Wianamatta shales is interfered with on a magnificent scale at Emu Plains. The entire country from this point to Sydney Heads has been slowly let down by one of those great earth movements known as a "downthrow fault." The downthrow was not the work of one single act of disturbance--it went on for ages. Meantime the Wianamatta shales, which overlaid the Hawkesbury sandstones of the Blue Mountains, were denuded off, or nearly so, for there is only a small patch now remaining, right on the top, after we have ascended by the first zigzag, to show that they were once continuous with those of the plains more than 2,000 feet below.'