Fig. 15.—Section.
Pipes laid underground from the outside furnish fresh air when desired and ventilation in the roof is also provided for.
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 over and in the doors. The house is heated by two four inch pipes under the tables. The boiler pit is located in a sunken shed outside, not shown in the plan. This house has been used for growing such plants as are generally found in an amateur's collection, and has given satisfactory results.
