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 471
out no offensive and ^inflammable gas, air from it may accordingly be led freely fromit to the ventilating fire. But if c abound in fire-damp, it mustenter at such an altitude as may prevent all chance of ignitionfrom the fire below, Diagram 12 \ 26. In houses, ships, mines, and manufactories, the… … movements that might be induced from the ceiling of three dif- APPENDIX. 447 ferent decks on board ship, were a central ventilating power orforce applied at d. Such a power is occasionally arranged, sothat its action may be reversed by a very simple movement-Diagram 14 illustrates a case of this…
