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 293
211 represent one of these double circles, which produced a LARGE GAS BURNERS. 269 very pleasing effect in the apartment in which it was placed,the ventilation having been sufficient to carry away all thevitiated atmosphere it produced. 637. Figs. 212 and 213 represent a different form of bur-ner,…