Propagation, in general, signifies the act of multiplying the kind or species 5 but, in this place, we propose to treat only of vegetable nature.
1. Planting the leaves, was accidentally discovered by J. F. Henry, a German, who died at Augsburg in 1726. He reared many large trees, by setting healthy leaves in flower-pots containing sifted garden-mould, so that one-third of the leaf was covered with earth. Over these pots, he suspended vessels filled with water, which gradually dropped upon the small plantation beneath: thus, the young stems began to strike root and grow like those reared from kernels.—Henry was born at Stuttgard, in 1647, where at an early period of his life he made this useful discovery, which was first described byMANDiROLA, an Italian monk, who published a treatise " On Flower-gardens and Orangeries" in I679.
2. By covering horizontal sprigs, or branches with moss.—This ingenious method of multiplying plants was lately announced by J. G. WEndland, an eminent gardener in Germany, who described it for the benefit of the public, nearly in the following words:—Such shrubs as cannot conveniently be propagated by seeds, sets, or by layers, may be easily multiplied, especially if they have young branches near their roots. For this purpose, the earth around the stem ought to be previously loosened, elevated, and made nearly level with the lowermost sprouts: these should next be laid on the ground horizontally (without cutting or breaking them); then fastened with small wooden hooks; covered with moss; and frequently watered, so that the latter may closely attach itself round the branches. The operation may be performed either in the spring, or autumn : if in the former season, the moss should never be suffered to become dry ; if in the latter, it must be covered with straw, to protect the layers from the effects of frost. When the moisture has softened the rind of the sprouts, young;-roots will strike through the moss" into the soil, and numerous plants may thus be obtained in the course of one summer, sufficiently vigorous to be removed to the nur sery. No biennial parent-branches, however, need be employed; as these will produce new saplings only in the second year.