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London Lives 1690 to 1800
Crime, Poverty and Social Policy in the Metropolis
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September 1784
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If the Room has no Fire Place and is too close to burn
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charcoal, it may be kept boiling while it is playing on the
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infected Places (if the Engine is made of Copper or Tin) by a large
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heated Iron placed under it
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<
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It will be necessary while this is performing, that every door
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Window or Aperture that has not an immediate Communication
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with the external Air be close stopt, and as many Openings next
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the external Air be left open as can with conveniency be
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admitted, that as the rarified impure Air is forced out, as
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much of the pure fresh Air may supply its Places as possible
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The opening & shutting of the different Out and Inlets must
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be strictly attended to.
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<
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By the above method, what Air is left impure after the
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Rarifaction of the boiling Vinegar, will be in a great measure
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corrected by the Showers of Vinegar falling through it. But
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as this method will render such Rooms as are at the Time
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inhabited too wet to warrant such a Procedure, the following
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might be substituted, particularly where no Fire or Fire place
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is allowed
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Let a wide shallow Tub (or what is more commodiously
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used, The Machine a Description of which is here annexed)
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that has its Bottom perforated full of small Holes, be placed on
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Supporters as near the Ceiling as is convenient to pour in cold
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Vinegar, and another on the Floor, somewhat wider, immediately
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under the first, to receive the Liquor as it falls; which will
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serve repeatedly in different parts of the Room, till it has
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past through most of the confined Air.
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n
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"420"
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Firing Gunpowder will tend much to purify infected
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Places, as the Explosion will force out a considerable Column
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of Air, and make room for the admission of fresh, provided
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there is a Communication with the external Air as above
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recited; and the Smoke will be the Acid of Sulphur.
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n
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"421"
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And as a considerable Portion of fixed Air is generated
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in the Bodies of Men, and thrown out by the Mouth as
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excrementitious; the passing of
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Lime Water
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through it,
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>
occasionally, as the Vinegar is directed to be Done will tend
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