retched over and along the window sash. We have had a number of
flowers of a pure feathery white, _C. grandiflorus_, that were over
fifteen inches in diameter; this is the best of the night-flowering
species.

PROPAGATING REX BEGONIAS.

Those Begonias, known as belonging to the Rex division, are very
beautiful, and also very distinct in both leaf and flower from all other
species and varieties. The leaves are noted for their peculiar shape and
markings, making them very valuable as ornamental house plants. They are
easily multiplied from the leaf with its stalk. To propagate these, the
leaf, or leaves, including the stalk, should be taken off close to the
plant. Insert the stem of the leaf in sand, and deep enough to allow the
leaf to lie flat upon the surface of the sand. It will take them about
from two to three weeks to root, after which they should be potted in
good, rich soil. It will take sometime to start them into a growth, but
they grow very rapidly when they begin, and in two years will make large
plants.

CHAPTER XXVI.

ROCKERIES--HOW TO MAKE THEM.

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, leavi