Illustrations of the theory and practice of ventilation : with remarks on warming, exclusive lighting, and the communication of sound (1844)
Reid, D. B. (David Boswell), 1805-1863 · London : Longman, Brown, Green, & Longmans · leaf 140
234. In each of these cases the currents above and below arealways observed in the opposite direction ; with the candle theyare towards the centre on the floor, and from the centre at theceiling; with the ice the movement is the reverse both aboveand below. 235. All local sources of heat and cold… … w V I/ x.^ + 236. A stove in the centre of any room produces a move- 116 DESCENDING CURRENTS FROM COLD GLASS. ment such as the candle does. But if placed at one side, Fig,79, the air warmed by it ascends on that side, and a correspond-ing amount of air descends on the other side. If a stove…
