Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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That as for the ſubtle Matter which makes
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the Objects encloſed in our evacuated Re
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ceiver, viſible, and the Magnetical Efflu
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via of the Earth that may be preſum'd to
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paſs thorow it, though we ſhould grant
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our Veſſel not to be quite devoyd of
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them, yet we cannot ſo reaſonably affirm
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it to be repleniſh'd with them, as we may
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ſuppoſe, that if they were gather'd toge
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ther into one place without Intervals be
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tween them, they would fill but a ſmall
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part of the whole Receiver. </
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>As in the
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thirteenth Experiment, a piece of Match
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was inconſiderable for its bulk, whileſt its
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parts lay cloſe together, that afterwards
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(when the Fire had ſcatter'd them into
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ſmoke) ſeem'd to repleniſh all the Veſſel.
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>For (as elſewhere our Experiments have
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demonſtrated) both Light and the Efflu
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via of the Load-ſtone, may be readily ad
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mitted into a Glaſs, Hermetically ſeal'd,
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though before their Admiſſion, as full of
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Air as hollow Bodies here below are wont
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to be, ſo that upon the exſuction of the
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Air, the large ſpace deſerted by it, may
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remain empty, notwithſtanding the pre
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tence of thoſe ſubtle Corpuſcles, by
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which Lucid and Magnetical Bodies pro
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duce their effects. </
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