Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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              almoſt with Quick-ſilver, and faſtning a
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              mark over againſt the middle of the pro­
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              tuberant Superficies as near as our Eyes
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              could judge, we found that the Quick­
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              ſilver alone weighed 299 1/32 Grains: Then
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              the Quick-ſilver being pour'd out, and
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              the ſame Glaſs being fill'd as full of com­
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              mon Water, we found the Liquor to
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              weigh 21 7/8 Grains. </s>
              <s>Whereby it appear'd
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              that the weight of Water to Quick­
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              ſilver, is as one to (13 19/28): Though our Il­
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              luſtrious
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              Verulam
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              (queſtionleſs not for
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              want of Judgement or Care, but of ex­
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              act Inſtruments) makes the proportion
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              betwixt thoſe two Liquors to be greater
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              then of 1 to 17. And to adde, that up­
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              on the by, ſince Quick-ſilver and well
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              rectified Spirit of Wine, are (how juſtly
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              I ſay not) accounted, the one the hea­
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              vieſt, and the other the lighteſt of Li­
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              quors; we thought to fill in the ſame
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              Glaſs, and with the ſame Scales to ob­
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              ſerve the difference betwixt them, which
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              we found to be as of 1 to (16 641/1084); where­
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              by it appear'd, That the difference be­
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              twixt Spirit of Wine, that may be made
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              to burn all away, (ſuch as was ours) and
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              common Water, is as betwixt 1 and (1 44/171) </s>
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