Boyle, Robert
,
New experiments physico-mechanicall, touching the spring of the air and its effects
,
1660
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with it Receivers even for the moſt ſub
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tle Chymical Spirits, You would ſcarce
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wonder at the ſervice it has done in our
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Pneumatical Glaſs. </
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>WE took a Tallow-Candle of ſuch
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a ſize that eight of them make
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about a pound, and having in a very com
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modious Candleſtick let it down into the
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Receiver, and ſo ſuſpended it that the
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Flame burnt almoſt in the middle of the
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Veſſel, we did in ſome two minutes ex
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actly cloſe it up: and, upon Pumping ve
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ry nimbly, we found that within little
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more then half a minute after the Flame
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went out, though the Snuff had been
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purpoſely left of that length we judged
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the moſt convenient for the laſting of
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the Flame. </
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Experi
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ment
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10.</
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>But the ſecond time having put in the
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ſame Candle into the Receiver, (after it
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had by the blaſts of a pair of Bellows
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been freed from Fumes) the Flame laſted
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about two minutes from the time the
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Pumper began to draw out the Air; up
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on the firſt exſuction whereof, the Flame
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ſeem'd to contract it ſelf in all its Dimen
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ſions. </
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>And theſe things were further ob-</
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