Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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found by our ſeveral marks whereby we
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had taken notice of its ſeveral removes, that
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it had
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about (9/16) of an Inch from the
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place where it firſt ſetled, & the other Inch
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and (7/16) it had aſcended. </
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>And it ſeems pro
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bable that the height of the Mercurial Cy
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linder would have varied yet more, if the
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Experiment had been made in the open
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Air and in a long Tube, where the Parti
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cles of the Impriſon'd Air, by having
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more room to diſplay themſelves in,
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might not have had ſo ſtrong a Spring to
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work upon the Quick-ſilver with. </
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>But for
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want both of time and of a competent
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quantity of Mercury (which was not to be
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procur'd where we then happen'd to be)
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we were unable to make any further try
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als: which therefore chiefly troubled us,
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becauſe we would gladly have try'd an in
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genious Experiment which was ſuggeſted
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unto us by that excellent Mathematician
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Mr.
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Wren,
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who being invited to name any
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thing he would have us try touching the
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preſſure of the Air, deſired us to obſerve
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whether or no the Quick-ſilver in a long
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Tube would not a little vary its height ac
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cording to the Tides, eſpecially about the
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New and Full Moon, about which times
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Mariners obſerve thoſe great Flowings
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and Ebbs of the Sea, that they call the </
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