season advances raise
the sashes an inch or two, in the middle of the day, and water freely,
at evening, with water that is nearly of the temperature of the earth in
the frame. As the heat of the season increases whitewash the glass, and
keep them more and more open until just before the plants are set in
open ground, then allow the glass to remain entirely off, both day and
night, unless there should be a cold rain. This will harden them so that
they will not be apt to be injured by the cabbage beetle, as well as
chilled and put back by the change. Should the plants be getting too
large before the season for transplanting, they should be checked by
root pruning,--drawing a sharp knife within a couple of inches of the
stalk. If it is desirable still further to check their growth, or harden
them, transplant into another cold frame, allowing each plant double the
distance it before occupied.

The structure and management of a hot-bed is much the same as that of a
cold frame, with the exception that the sashes are usually longer and
the back and front somewhat higher; being started earlier the requisite
temperature has to be kept up by artificial means, fermenting manure
being relied upon for the purpose; and the loss of this heat has to be
checked more carefully by straw matting, and, in the far North, by
shutters also. In constructing it, horse-manure, with plenty of litter,
and about a quarter its bulk in leaves, if attainable, all having been
well mixed together, is thrown into a pile, and left for a few days
until steam escapes, when the mass is again thrown over and left for two
or three days more, after which it is thrown into the pit (or it may be
placed directly on the surface) which is lined with boards, from
eighteen inches to two feet in depth, when it is beaten down with a fork
and trodden well together. The sashes are now put on and kept there
until heat is developed. The first intense heat must be allowed to pass
off, which will be in about three days after the high temperature is
reached. Now throw on six or eight inches of fine soil, in which mix
well rotted manure, free from all straw, or rake in, thoroughly,
superphosphate, or guano, at the rate of two thousand pounds to the
acre, and plant the seed as in cold frame. Harden the plants as directed
in preceding paragraph.

CAULIFLOWER, BROCCOLI, BRUSSELS-SPROUTS, KALE, AND SEA-KALE.

My treatise on the cabbage would hardly be complete without som