"To bare, dry mountain-ridges," says M. Forgues, "succeed plains, sometimes incrusted with hard clay, sometimes clothed with thick sand. At the outset of spring, in the months of April and May, the country is coloured with some softer tints, the grass breaks here and there through the granite and the gravel; but in the first summer heats everything grows dry, and the soil resumes its monotonously brown or gray livery. Water fails for cultivation, which in the best districts is confined to a few scattered oases. In these vast spaces, when the eye surveys them from some mountain-crest, there occurs nothing to arrest the gaze; and when once the spring has past, the cultured fields become blended with those which the plough has suffered to lie fallow, the clay-built villages with the earth of which their walls are constructed. In these confused landscapes even a considerable town scarcely traces its blurred outline among the accumulated ruins in whose centre it persists in living, and whose extent attests its decadence. It is a marvel if, on arriving at the limit of these monotonous plains, the traveller distinguishes them from the deserts to whose threshold they have generally conducted him. He only recognizes the latter by the dazzling gleam of their saline efflorescence, which stretches far out of sight, and where at intervals abruptly projects some mass of ebon-black rock, transformed by the solar refraction, and assuming in quick succession the most fantastic aspects." I have spoken of the inland seas and salt lakes which testify to the primitive submersion of the whole region of the Great Deserts. Let us pursue our route towards the west, and we shall encounter the most remarkable of these vestiges of a remote past. First, I shall speak of the Dead Sea, the Lake Asphaltes, which Dean Stanley justly designates "one of the most remarkable spots in the world," and which, as the reader knows, is situated in the south of Palestine, at a short distance from Jerusalem. It is true that "a great mass of legend and exaggeration, partly the effect, partly the cause, of the old belief that the cities of Sodom and Gomorrah were buried under the Dead Sea, has been gradually removed in recent years. The glittering surface of the lake, with the thin mist of its own evaporations floating over its surface, will now no more be taken for a gloomy sea, sending forth sulphurous exhalations. The birds which pass over it without injury have long ago destroyed the belief that no living creature could survive the baneful atmosphere which hung upon its waters." But still, for the scientific no less than for the historical student, it possesses an absorbing interest. It is the most depressed sheet of water in the world, lying fully thirteen hundred feet below the level of the Mediterranean: as the Lake Sir-i-Kol, where the Oxus rises "In his high mountain-cradle in Pamere,"