Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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top of the Pipe ſome drops of it be
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gan to run down along the out-ſide of it,
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which oblig'd us to forbear pumping a
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while, and give the Water leave to ſub
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ſide within leſs then two Inches of the
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bottom of the Pipe. </
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>After this the
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Pump being again ſet at work, the bub
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bles began to aſcend from the bottom
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of the Pipe, being not all of a ſize, but yet
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ſo big, that eſtimating one with another,
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they appear'd to be of the ſize of the ſmal
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ler ſort of Peas; and of theſe we reckon'd
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about ſixty which came up one after ano
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ther, beſides ſtore of ſmaller ones, of which
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we made no reckoning: And at length,
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growing weary of reckoning and pumping
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too (becauſe we found, that in ſpight
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of all our pains and induſtry, ſome un
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diſcern'd Leak or other in the Recei
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ver hinder'd us from being able to empty
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it altogether) we thought fit to deſiſt for
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that time. </
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>After tryal made of what o
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peration the external Air, being let in
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upon the expanded Water, would have;
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and accordingly turning the Key to let in
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the Air, we ſaw, as we expected, that
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the Water in the Pipe in a moment fell
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down almoſt to the bottom of it. </
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