The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 54
t in going along the sewers, he has often triedwhether the currents of air were flowing into the sewers, or out ofthem into the houses. By placing the light which he had in hishand by the side of the house drains, he almost invariably foundtlie flame carried into the mouths of the drains—showing…
Architecture · Civil engineering · Science
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