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

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              to be very convex, or ſwelling, in the
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              middle; but if you dip the end of a flen-
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              der Pipe in it, the ſurface of the Li-
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              quor (as 'tis call'd) will be lower within
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              the Pipe, then without.</s>
              <s>Which
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              Phaeno-
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              mena
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              , whether, and how far, they may
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              be deduc'd from the Figure of the Mer-
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              curial Corpuſcles, and the Shape of the
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              Springy Particles of the Air, I willingly
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              leave to be conſider'd.</s>
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              SEveral ways we have met with pro-
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              poſ'd, partly by the excellent
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              Galileo
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              ,
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              and partly by other ingenious Writers,
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              to manifeſt that the Air is not devoid of
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              weight; ſome of theſe, require the previ-
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              ous abſence of the Air to be weighed;
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              and others, the violent condenſation of it.
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              </s>
              <s>But if we could lift a pair of Scales above
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              the Atmoſphere, or place them in a
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              Va-
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              cuum
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              , we might there weigh a parcel of
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              Air it ſelf, as here we do other Bodies in
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              the Air, becauſe it would there be heavi-
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              er then that which ſurrounds it, as are
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              groſſer Bodies we commonly weigh, then
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              the medium or ambient Air.</s>
              <s>Where-
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              fore, though we have above declin'd to
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              affirm, that our Receiver, when empty-</s>
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          </chap>
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