in gardening, are tender shoots or twigs of trees, laid or buried in the ground, till, having struck root, they are separated from the parent-tree, and become distinct plants.—The propagating trees by layers is done in the following manner: The branches of the trees are to be slit a little way, and laid under the mould for about half a foot; the ground should be first made very light, and after they are laid they should be gently watered. If they will not remain easily in the position they are put in, they must be pegged down with wooden hooks: the best season for doing this is, for evergreens, toward the end of August; and, for other trees, in the beginning of February. If they are found to have taken root, they are to be cut off from the main plant the succeeding winter, and planted out. If the branch is too high from the ground, a tub of earth is to be raised to a proper height for it. Some pare off the rhind, and others twist the branch before they lay it; but this is not necessary. The end of the layer should be about a foot out of the ground; and the branch may be either tied tight round with a wire, or cut upwards from a joint, or cut round for an inch or two at the place, and it is a good method to pierce several holes thro' it with an awl above the part tied with the wire.