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

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              to have been kill'd by the want of Air, we
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              foreſee another Argument that we muſt
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              deal ſo ingeniouſly with Your Lordſhip,
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              as not to conceal. </s>
              <s>You very well know,
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              that beſides the generality of the
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              Schools, there are many new Philoſophers
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              who, though they diſſent from the old
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              Peripateticks in other things, do, as they,
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              deny the poſſibility of a
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              Vacuum;
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              and
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              hold, that thoſe ſpaces which are devoid
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              of Air, and other groſſer Bodies, are all
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              of them exactly repleniſhed with a certain
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              Etherial Matter, ſo thin and ſubtle, that
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              it can freely permeate the Pores of the
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              compactedſt and cloſeſt Bodies, and ev'n
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              of Glaſs it ſelf. </s>
              <s>Now ſome of thoſe Na­
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              turaliſts that are of this perſwaſion may
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              object, That the Animals that died in our
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              Receivers, did ſo, not ſo much for lack of
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              Air, as by reaſon that the Air that was
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              pump'd out was neceſſarily ſucceeded by
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              an Etherial Subſtance; which conſiſting of
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              parts vehemently agitated, and ſo very
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              ſmall, as without reſiſtance to paſs in and
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              out through the very Pores of Glaſs; it
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              may well be ſuppoſ'd, that a conſiderable
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              quantity of this reſtleſs and ſubtle Mat­
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              ter, meeting together in the Receiver, </s>
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