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Updated: September 16, 2025
The time when ventilation is most difficult is the medium weather in spring and fall, when the air, though damp, is similar in temperature outside and in. Then the warm-air flue is indispensable to proper ventilation. This is especially needed in a room used for school or church purposes. A work by Dr.
The only mode of ventilation that will work always and without fail is that of a warm-air flue, the upward heated air-current of which draws off the foul gases from the room: this, supplemented by an opening on the opposite side of the room for the admission of pure air, will accomplish the desired end.
The stove-room receives pure air from the conductor, and sends off impure air and the smells of cooking by a register opening directly into the exhausting shaft; while its hot air and smoke, passing through the iron pipe, heat the air of the shaft, and produce the exhausting current. The construction of the exhausting or warm-air shaft is described on page 63.
This lodging, situated on the second story, was comprised of a capital chamber and bedroom, with a southern aspect, and looking on the garden; the pine floor was perfectly white and clean; the iron bedstead was supplied with a good mattress and warm coverings; a gas burner and a warm-air pipe were also introduced into the rooms, to furnish light and heat as required; the walls were hung with pretty fancy papering, and had curtains to match; a chest of drawers, a walnut table, a few chairs, a small library, comprised Agricola's furniture.
However, half-way up the avenue he came into one of those warmer currents which sometimes linger so mysteriously among trees, seeming like a pool of air submerging one as visibly as water. This warm-air bath was, moreover, sweetened with the utmost breath of the pine woods.
That mysterious warm-air current known as the Chinook wind steals through the depressions of the Rocky Mountains, at certain seasons of the year, from the mild surface of the Pacific, and tempers the severity of the winters in some portions of Montana, Wyoming, and the great West to a degree that renders them milder than many places farther south.
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