In many parts of the country, the secondary blue limestone abounds, which, in the small masses found loose in the woods, covered with mosses and ferns, affords the very finest material for artificial rockwork.* (* Our readers may see an engraving and description of a superb extravaganza in rockwork in a late number of London's Gardener's Magazine. Lady Broughton, of Hoole House, Chester, England, has succeeded in forming, round a natural valley, an imitation of the hills, glaciers, and scenery of a passage in Switzerland. The whole is done in rockwork, the snow-covered summits being represented in white spar. The appropriate plants, trees, and shrubs on a small scale, are introduced, and the illusion, to a spectator standing in the valley surrounded by these glaciers, is said to be wonderfully striking and complete.)
