a remarkable group of rocks in the form of detached or isolated columnar rocks in a valley of the Riesengebirge, in the district of Glatz in Silesia. The mountain for several miles appears divided into detached masses by perpendicular cuts, varying in depth from 600 to 1200 feet. These masses have a diameter from a few feet to several hundred yards. The part called the labyrinth consists of smaller masses confusedly grouped into columnar forms, from 100 to 200 feet in height, resting on each other. The descent into this wild scene is by a few narrow footpaths. of great sublimity. Geologists suppose that the whole area has once been a tabular mass of sandstone, of unequal hardness; that the soft parts, which formed perpendicular veins or seams, have been washed away by water, leaving the harder portions in their natural position. Others suppose that this process has been begun by some subterranean commotion that split the rock, and that the fissures have been enlarged by the action of water.