ash in the doors are hinged and can be opened when needful.

[Illustration: FIG. 11.--_Ground Plan._]

[Illustration: FIG. 12.--_Section._]

DESIGN No. 4.

This design combines a grapery, and forcing, and propagating house in
one. _Figs._ 13, 14, 15, show side elevation, south front, and section
through the centre. The dimensions are twenty feet in width by forty
three feet in length, to which ten feet have since been added, enclosing
boiler pit C. and potting room not shown in sketch. The foundation is
built on locust posts with plank nailed upon both sides. Such
foundations we do not advocate, as they are a bill of expense, for
needful repairs, every four or five years, and the additional outlay for
permanent brick or stone foundations is money well invested. In the
present case, the owners wishes were carried out. On the ground plan,
that part designated A. is devoted to the growth of grapes. The border
is all inside of the house and is about three feet in depth. At the
dotted line a wall is built across the house to sustain the border, the
floor of B. being two feet lower. The central portion of B. is devoted
to grapes in pots. At the sides of B. are beds for propagating plants,
forcing vegetables, &c., furnished with bottom heat from brick tanks
which extend entirely around the house and heat the grapery part as
well.

[Illustration: FIG. 13.--_Side Elevation._]

[Illustration: FIG. 14.--_South Front._]

[Illustration: FIG. 15.--_Section._]

Pipes laid underground from the outside furnish fresh air when desired
and ventilation in the roof is also provided for.

[Illustration: FIG. 16.--_Ground Plan._]

DESIGN No. 5.

The following design is a house with a straight roof of low pitch, and
was built with considerate regard to cost, for which reason, among
others, the foundations are of wood, and side lights are omitted. The
sides are of inch and a half plank nailed to locust posts, the space
between the inside and outside lining being filled with charcoal dust.
Such foundations do very well at first, but the wood in contact with the
ground will decay in three or four years, and require repairs--though
locust posts will last for many years.

This house is quite narrow, being only twelve feet wide. It has tables
on either side and a walk in the middle, through which is a row of light
posts to support climbing plants. Ventilation is effected at the ridge
by six ventilators. There are also ventilators o