Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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>And we may further conſider that yet
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the external Air or Atmoſphere is ſubject
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to many alterations, beſides them that
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proceed from either of thoſe Quali
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>For the Experiment that occaſion'd
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this Diſcourſe, ſeems to make it proba
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ble enough that there may be ſtrange
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Ebbings and Flowings, as it were, in the
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Atmoſphere; or at leaſt, that it may ad
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mit great and ſudden Mutations, either as
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to its Altitude or its Denſity, from cauſes,
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as well unknown to us, as the effects are
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unheeded by us. </
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>And that You may not
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think that there is nothing in Nature but
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our Experiment that agrees with this our
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conjecture, we might put Your Lordſhip
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in minde of the Pains and Aches that are
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often complain'd of by thoſe that have
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had great Wounds or Bruiſes, and that
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doe preſage great Mutations in the Air
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oftentimes, whilſt to ſtrong and healthy
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Perſons no ſign of any ſuch thing appears.
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>And that is alſo very memorable to this
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purpoſe, which I remember I have ſome
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where read in a Book of the Ingenious
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Kircherus,
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who giving a pertinent admoni
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tion concerning the various refractions
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that may happen in the Air, relates, That </
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