Zisca Hill, where the Austrians now are, rises sheer up, of well-nigh precipitous steepness, though there are trees and grass on it, from the eastern side of Prag, say five or six hundred feet. A steep, picturesque, massive green Hill; Moldau River, turning suddenly to right, strikes the northwest corner of it (has flowed well to west of it, till then), and winds eastward round its northern base. As will be noticed presently. The ascent of Ziscaberg, by roads, is steep and tedious: but once at the top, you find that it is precipitous on two sides only, the City or westward side, and the Moldau or northward. Atop it spreads out, far and wide, into a waving upland level; bare of hedges; ploughable all of it, studded with littery hamlets and farmsteadings; far and wide, a kind of Plain, sloping with extreme gentleness, five or six miles to eastward, and as far to southward, before the level perceptibly rise again. Another feature of the Ziscaberg, already hinted at, is very notable: that of the Moldau skirting its northern base, and scarping the Hill, on that side too, into a precipitous, or very steep condition. Moldau having arrived from southward, fairly past the end of Ziscaberg, had, so to speak, made up his mind to go right eastward, quarrying his way through the lower uplands there, And he proceeds accordingly, hugging the northern base of Ziscaberg, and making it steep enough; but finds, in the course of a mile or so, that he can no more; upland being still rock-built, not underminable farther; and so is obliged to wind round again, to northward, and finally straight westward, the way he came, or parallel to the way he came; and has effected that great Horse-shoe Hollow we heard of lately. An extremely pretty Hollow, and curious to look upon; pretty villas, gardens, and a "Belvedere Park," laid out in the bottom part; with green mountain-walls rising all round it, and a silver ring of river at the base of them: length of Horse-shoe, from heel to toe, or from west to east, is perhaps a mile; breadth, from heel to heel, perhaps half as much. Having arrived at his old distance to west, Moldau, like a repentant prodigal, and as if ashamed of his frolic, just over against the old point he swerved from, takes straight to northward again. Straight northward; and quarries out that fine narrow valley, or Quasi-Highland Strath, with its pleasant busy villages, where he turns the overshot machinery, and where Friedrich and his men had their pontoons swimming yesterday.