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 307
d body of the House, to the upper ventilatingtube. 649. While the air enters with extreme freedom from thewhole extent of every riser on the floor of the House of Commons,its ingress being merely equalized by the very porous hair-cloththat hangs before them, a still greater amount of diffusion is… … diffusion given at first; the number of apertures was afterwardsdoubled. The central hair-cloth is changed daily. 650. Fig. 221 gives a connected view of the different pointsreferred to in the preceding paragraphs ; a the vitiated air fromthe drain in Old Palace Yard, controlled by the…
