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 164
another variety ofbad ventilation, which is verycommonly met with in nume-rous situations. I have no-ticed it particularly in somechurches and hospitals, wherethere may be a considerableaperture between the ceilingand the roof, though, after thevitiated air may have passed theceiling, there are no… … ■f- r- ] ] ^ _4fc -^--JL .V- Fig. 13G.
