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 151
261. Fig. 98.—The air is received by openings in the gableand under the roof. Diffusion is given by a deep dado. Theair escapes by a central channel, and the discharge is regulatedby a valve. 262. Fig. 99.—Similar to 94, but the air is admitted by aflue in the wall, and more extensive diffusion is…