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 419
e com-partment, viz., a a a, &c, the machinery for extracting air atb, and the channel for the discharge of vitiated air c, representthe great essentials of ventilation for vessels of the size now re-ferred to. The screw, the fanner, or the windmill ventilator maybe employed, as local… … each compartment can be regulated by valves. From the hold,the vitiated air can be extracted by a valve in the lower part ofthe horizontal tube. 820. The horizontal tube in the hold may be made perfectlyair-tight, and constructed of irOn or other materials, such as areboth air and water tight, so…
