half moon, is earth-shine. The appearance of our world to observers in the moon, supposing them to have powers of vision similar to man's, must be exceedingly gorgeous. It presents to them a disc thirteen times larger than that of the moon appears to us; it displays from its clouds, and oceans, and continents, a grand and ever-shifting variety of light and shade; and it seems never to move from one spot of their sky, but may be left behind them by their travelling into their other hemisphere. How curious must it be for the inhabitants of that other hemisphere-assuming the existence of such-to come to the hither side, and see this magnificent world bursting into view! Most of the earthward hemisphere of the moon has a very wonderful surface. The general appearance of it, as seen through a telescope, and also the appearance of conical elevations in it which some observers suppose to be craters, and that of great circular mountains in it, and their shadows, are shown in the accompanying plate. One feature consists of broad, pale, and very long streaks; another consists of narrow lines, supposed to be fissures; a third consists of solitary mountains, shaped like sugar-loaves; a fourth consists of mountain-ridges, some irregular, and others in lines; a fifth consists of enormous circular depressions, some of them five hundred or six hundred miles wide; and a sixth consists of huge hollow mountains, with summits like stupendous rings, and interiors like awful pits or caverns. Many of the mountains are much loftier than the highest peaks of our Alps, and some of the pits have a depth of more than twenty thousand feet. The scenery must be sublime; but can it be "clothed |