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

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              ally ſuppoſing the dilatation not to be re­
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              ſtrain'd by the Bladder. </s>
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              <s>SInce we wrote the other day the former
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              Experiment, we have met with ſome
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              Glaſſes not very unfit for our purpoſe;
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              by means of which we are now able, with
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              a little more trouble, to meaſure the ex­
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              panſion of the Air a great deal more ac­
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              curately then we could by the help of the
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              above-mention'd Bladder, which was
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              much to narrow to allow the Air its ut­
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              moſt diſtention. </s>
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              <s>We took then firſt a Cylindrical Pipe
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              of Glaſs, whoſe bore was about a quarter
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              of an Inch in Diameter: this Pipe was ſo
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              bent and doubled, that, notwithſtanding
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              its being about two foot in length, it
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              might have been ſhut up into a ſmall Re­
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              ceiver, not a Foot high: But by miſ­
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              fortune it crack'd in the cooling, whereby
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              we were reduced to make uſe of one part
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              which was ſtraight and intire, but exceed­
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              ed not ſix or ſeven Inches. </s>
              <s>This little
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              Tube was open at one end; and at the
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              other, where it was Hermetically ſeal'd,
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              had a ſmall Glaſs bubble to receive the
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              Air whoſe dilatation was to be meaſur'd. </s>
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