Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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and paſt the poſſibility of being recover'd
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by the re-admitted Air. </
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>Some Circumſtances, beſides thoſe al
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ready mention'd, occurr'd in the making
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of the Experiment, of which theſe are
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the principal. </
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>Firſt, when the Receiver was full of
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Smoke, if the Cylinder were emptied,
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immediately upon the turning of the
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Stop-cock, the Receiver would appear
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manifeſtly darken'd to his eye that look'd
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upon the light through it: and this dark
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neſs was much leſs when the Receiver was
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much leſs fill'd with Fumes: It was alſo
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inſtantaneous, and ſeem'd to proceed from
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a ſudden change of place and ſcituation
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in the exhalations, upon the vent ſud
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denly afforded them and the Air they
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were mixt with, out of the Receiver into
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the Cylinder. </
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>The next thing we obſerv'd was, a kinde
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Halo
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that appear'd a good while about
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the Fire, and ſeem'd to be produced by
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the ſurrounding Exhalations. </
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>And laſtly, it is remarkable, That even
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when the Fumes ſeemed moſt to reple
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niſh the Receiver, they did not ſenſibly
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hinder the Air included in the Bladder
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from dilating it ſelf after the ſame manner </
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