Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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ver two black ſquare marbles (the one of
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two inches and a third in length or
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breadth, and ſomewhat more than halfe
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an inch in thickneſs: The other of the ſame
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extent, but not much above halfe ſo
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thick) faſten'd together by the interven
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tion of pure Spirit of Wine; and having
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ſuſpended the thicker by a ſtring from the
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cover, we found not that the exſuction of
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the ambient Air would ſeparate them,
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though a weight amounting to four oun
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ces were faſten'd to the lowermoſt mar
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ble to facilitate it's falling off. </
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Experi
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ment
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31,</
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>I would gladly have the Experiment
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try'd with marble ſo well polliſh't as to
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need no Liquor whatſoever to make them
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cohere, and in a Veſſel out of which the
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Air may be more perfectly drawn than it
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was out of ours. </
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>But in the mean time
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though we will not determin whether the
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Spirit of wine did contribute to the ſtrong
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coheſion of theſe ſtones, otherwiſe than
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by keeping ev'n the ſubtl'ſt parts of the
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Air from getting in between them, yet it
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ſeemed that the not falling downe of the
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lowermoſt marble might without impro
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bability be aſcrib'd to the preſſure of the
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Air remaining in the Receiver; which as
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we formerly noted having been able </
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