Warming
Fig. [9] represents an economical and wholesome way of warming the passages of a house. It is intended to represent a stove (any slow-combustion stove) with a fresh-air pipe of large calibre opening immediately beneath it. When the stove is lighted there is necessarily a large influx of fresh air, and the result is that the air in the passage is never 'close' or 'burnt.' It is important that the fresh-air pipe should be big, and that its gratings should be easily removable for cleaning.
Fig. 9.—Stove with Air-inlet underneath.
If the hall and passages be warmed in this way it becomes possible to ventilate the rooms from the passages in the depth of winter. Fig. [10] represents one of the top panels of a door converted into a louvre ventilator, with the object of ventilating a room from the passages. A ventilator of this kind, if provided with side-pieces, delivers its air nearly vertically, and admits a large volume of air without causing draught.
Fig. 10.—Ventilating Panel in Door.