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

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              that it may be well doubted whether the
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              obſervation, by reaſon of the great diffi­
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              culty have been exactly made, there is a
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              manifeſt diſparity betwixt the Air and
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              Water: For I have not found, that upon
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              an Experiment purpoſely made, (and in
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              another Treatiſe Recorded) that Water
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              will ſuffer any conſiderable compreſſion;
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              whereas we may obſerve in Wind-Guns
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              (to mention now no other Engines) that
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              the Air will ſuffer it ſelf to be crouded in­
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              to a comparatively very little room; in
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              ſo much, that a very diligent Examiner
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              of the
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              Phænomena
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              of Wind-Guns would
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              have us believe, that in one of them, by
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              condenſation, he reduc'd the Air into a
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              ſpace at leaſt eight times narrower then it
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              before poſſeſt. </s>
              <s>And to this, if we adde
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              a noble
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              Phænomenon
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              of the Experiment
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                <emph type="italics"/>
              De Vacuo;
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              theſe things put together, may
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              for the preſent ſuffice to countenance our
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              Doctrine. </s>
              <s>For that noble Experimenter,
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              Monſieur
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              Paſcal
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              (the Son) had the com­
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              mendable Curioſity to cauſe the
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              Torri­
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              cellian
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              Experiment to be try'd at the foot,
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              about the middle, and at the top of that
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              high Mountain (in
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              Auvergne,
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              if I miſtake
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              not) commonly call'd
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              Le Puy de Domme;
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              whereby it was found, That the
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              Mercury
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              </s>
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