rowed. The clay-slate and greywacke, as it is shattered by frost, and carried down by the torrents, of course forms itself into irregular flattish masses. The splintery edges of these are in some degree worn off by the action of water; and, slight decomposition taking place on the surface of the clay-slate furnishes an aluminous soil, which is immediately taken advantage of by innumerable lichens, which change the dark grey of the original substance into an infinite variety of pale and warm colours. These stones, thus shaped to his hand, are the most convenient building materials the peasant can obtain. He lays his foundation and strengthens his angles with large masses, filling up the intervals with pieces of a more moderate size; and using here and there a little cement to bind the whole together, and to keep the wind from getting through the interstices; but never enough to fill them altogether up, or to render the face of the wall smooth. At intervals of from 4 ft. to 6 ft. a horizontal line of flat and broad fragments is introduced projecting about a foot from the wall. Whether this is supposed to give strength, I know not; but, as it is invariably covered by luxuriant stonecrop, it is always a delightful object.
The door is flanked and roofed by three large oblong sheets of grey rock, whose form seems not to be considered of the slightest consequence. Those which form the cheeks of the window (Fig. 6), are generally selected with more care from the debris of some rock, which is
