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 72
s conveyed at the angles of the tower n n n n, when the cen-tral part must be opened for sound, and when the air is notpermitted to escape there. The pulpits are represented largerthan in reality, to shew distinctly modifications of Fig. 9. Fig. 8 illustrates the general nature of the ventilating… … Fig. 9. V ^ jr. ^-^-J^X^^m, J 1 Fig. 9 shews the construction of pulpits in which the clergy-man receives an independent supply of air through A, which heregulates by the attached valve, as he finds most suitable to thecircumstances in which he is placed. 86. In altering old chapels, numerous…
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