Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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as occaſion requir'd, to make uſe of ſuch
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Tubes, as if no ſuch holes had been left
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in them; by deviſing ſtopples for them,
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made of the common Plaiſter call'd
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Dia
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chylon:
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which I rightly enough gheſſ'd,
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would, by reaſon of the exquiſite com
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mixtion of its ſmall parts, and cloſeneſs
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of its texture, deny all acceſs to the ex
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ternal Air. </
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>Wherefore, ſuppoſing that
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by the help of ſuch Plaiſters, carefully
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laid upon the commiſſures of the ſtopple
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and hole to be made in the Receiver, the
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external Air might be hindred from inſi
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nuating it ſelf between them into the Veſ
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ſel, we cauſ'd ſeveral ſuch Glaſſes, as
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you will finde deſcrib'd a little lower, to
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be blown at the Glaſs-houſe; and though
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we could not get the Work-men to blow
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any of them ſo large, or of ſo conveni
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ent a ſhape as we would fain have had; yet
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finding one to be tolerably fit, and leſs
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unfit then any of the reſt, we were con
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tent to make uſe of it in that En
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gine: Of which, I ſuppoſe, you by this
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time expect the Deſcription, in order to
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the Recital of the
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Phænomena
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exhibited
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by it. </
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>To give your Lordſhip then, in the
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firſt place, ſome account of the Engine it </
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