Many have a taste for forming grotesque pieces of rock work, selecting therefor such oddly-shaped and variously-colored rocks as may be gathered near the locality; these are generally piled in the form of a pyramid in a conspicuous place on the lawn, and if nicely arranged, cannot be surpassed in attractiveness, and are in pleasing contrast with the flower-beds and shrubbery. Some prefer to have merely the bare rocks heaped into a pile, which will appear grotesque and rugged; others set out suitable plants, and train vines to creep over them. We think the latter the best method, where common rocks are used, but if one is fortunate enough to live in a locality where a large number of variously-colored rocks can be obtained, their natural colors when arranged will make them highly attractive. One of the finest pieces of work of this kind we ever saw, was formed of a number of rocks gathered from almost every country on the globe, each stone having a peculiar tint of its own. On the top of this valuable pile was a rare specimen of Red Rock obtained from Siberia, in the region of eternal frost.

HOW TO MAKE A ROCKERY.

Having selected a site in a partly shaded spot, we will then proceed to form a mound of earth which may be drawn to the spot for the purpose if necessary. Upon and around this mound the rocks are to be placed, one layer thick, leaving here and there between them a small crevice in which to plant vines, or to drop a few seeds. The top of the heap may be left open, to allow of setting out, either in a pot or planted out in the earth, a choice specimen plant. Among the plants the most appropriate for the centre are: Eulalia Japonica variegata, and Zebrina. A variegated Agave may appropriately occupy the place, or some of the tall native wild ferns. A narrow circle may be cut around the base of the rockery, six or eight inches wide; after this is spaded up a row of blue Lobelia may be planted around the whole circle. Instead of the Lobelia, a row of Echeveria secunda glauca, or of the Mountain-of-Snow Geranium would look very finely. It may be well to mention here a number of the plants most appropriate for rockeries. Who is not familiar with the Moneywort, with its low-trailing habit and small yellow flowers? It is peculiarly adapted for rockeries. Portulaca, Paris Daisy (Chrysanthemum frutescens), Myosotis (Forget-me-not), are among the most popular plants for rockeries. The small Sedum or Stone Crop (Sedum acre), is an interesting and useful little plant, growing freely on rock or rustic work. As vines are much used for such places, we will mention as the best hardy vines for this purpose Veitch's Ampelopsis (A. tricuspidata), English or Irish Ivy, and the so-called running Myrtle. The above are entirely hardy and will stand any amount of freezing without injury.

The following vines, although not hardy, are much used for rockeries: Thunbergias, TropÆolums, Kenilworth Ivy, and the German Ivy (Senecio scandens). Where a rockery is formed in the midst of a pond of water, as is often done, plants of the kind mentioned will not flourish so well as those of a semi-aquatic nature, such as Caladiums, Callas, some Ferns, Cannas, and Lycopodiums, all of which will flourish in moist places.