coarse débris which, in going toward the valley, become finer, while the layers themselves are thinner and separated by an increasing vertical distance; along these rubble beds are numerous calcareous concretions which stand upright. These are then the terrace-forming layers which, by their resistance to the action of water, cause the broken chasms and step-like contour of the loess regions. Each bank does indeed cleave vertically, sometimes--since the erosion works from below--leaving an overhanging bank; but meeting with this horizontal layer of marl stones, the abrasion is interrupted, and a ledge is made. Falling clods upon such spaces are gradually spread over their surfaces by natural action, converting them into rich fields. When seen from a height in good seasons, these systems of terraces present an endless succession of green fields and growing crops; viewed from the deep cut of a road below, the traveller sees nothing but yellow walls of loam and dusty tiers of loess ridges. As may be readily imagined, a country of this nature exhibits many landscapes of unrivalled picturesqueness, especially when lofty crags, which some variation in the water-course has left as giant guardsmen in fertile river valleys, stand out in bold relief against the green background of neighboring hills and a fruitful alluvial bottom, or when an opening of some ascending pass allows the eye to range over leagues of sharp-cut ridges and teaming crops, the work of the careful cultivator. ~UTILITY AND FRUITFULNESS OF THE LOESS.~