Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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<
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>THat the Air has a notable Elaſtical
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power (whenceſoever that proceeds)
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we have, I ſuppoſe, abundantly evinc'd,
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and it begins to be acknowledg'd by the
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eminenteſt Modern Naturaliſts. </
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>But whe
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ther or no there be in Water ſo much as
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a languid one, ſeems hitherto to have been
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ſcarce conſider'd, nor has been yet, for
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ought I know, determin'd either way by
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any Writer, which invited us to make the
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following Experiment. </
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Experi
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ment
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20.</
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>There was taken a great Glaſs-bubble,
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with a long neck; (ſuch as Chymiſts are
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wont to call a Philoſophical Egg) which
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being fill'd with common Water till the
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Liquor reach'd about a ſpan above the
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bubble, and a piece of Paper being there
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paſted on, was put unſtop'd into the Re
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ceiver, and then the Air was ſuck'd out
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after the wonted manner. </
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>The event was
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this, That a conſiderable part of the Air,
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pent up in the Receiver, was drawn out
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before we diſcern'd any expanſion of the
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Water; but, continuing the labor of
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pumping, the Water manifeſtly began to
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aſcend in the ſtem of the Glaſs, and di
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vers bubbles looſening themſelves from </
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