Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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employ'd to fill up the little Crannies left
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betwixt them, were conſiderable in this
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Experiment; by which may among other
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things appear, that I did not without
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cauſe in the above-nam'd Diſcourſe touch
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ing Fluidity and Firmneſs, aſcribe a great
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force, ev'n to ſuch Pillars of Air as may
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be ſuppoſ'd to begin at the top of the
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Atmoſphere, and recoyling from the
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ground to terminate on the Bodies on
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which they preſs: ſince in the preſent Ex
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periment ſuch a weight was ſupported by
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ſo ſlender a Cylinder of Air, rebounding
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from the Earth to the Valve whereon it
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did bear. </
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>BUt in regard we have not yet been
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able to empty ſo great a Veſſel as our
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Receiver, ſo well as we can the Cylinder
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it ſelf; our Pump alone may afford us a
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nobler inſtance of the fotce of the Air we
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live in, inſomuch, that by help of this
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part of our Engine, we may give a pretty
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near gheſs at the ſtrength of the Atmo
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ſphere, computed as a weight. </
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way may be this; Firſt, the Sucker be
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ing brought to move eaſily up and down
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the Cylinder, is to be impell'd to the top </
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