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 155
he air he unrestricted, the movementof the air is greater and greater the higher the temperature com-municated to the air. The introduction of a lamp under theventilating aperture increases greatly its power of discharge, andproduces, in an empty room, a similar effect. 272. Fig. 109.—A gas-lamp, a… … 273. Fig. 110.—Where circumstances do not admit of theheat being applied with safety above, the arrangement shewnin this figure may frequently be adopted with advantage. Theposition of the fire, lamp, or steam-pipe at e, is so far disadvan-tageous, in so much as there is a loss of power wherever it…
