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 470
nly discharged without power,—that this power,from local circumstances, cannot be applied there ; and that it isnecessary to erect a power at /, so that the air which is dischargedshall be conveyed from the ceiling by an air-tight channel to/? 20. Is it better, from the circumstances of the case,…