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

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1of the Cylinder, the hole of the Stop
cock and that in the Cover of the Re
ceiver, that ſome Air might get in to
cheriſh the Flame and the ſmoke might
have a vent; Yet for ſo great a Flame
the Air ſufficed not ſo much as till the
Cover could be perfectly luted on: So
that before we were quite ready to imploy
the Pump, the Candle was extinguiſhed.
Wherefore we took but one of the a
bove mention'd Tapers, and having
lighted it, cloſ'd it up in the Receiver, to
try how long a ſmall Flame with a pro
portionable ſmoke would continue in
ſuch a quantity of Air: But we found
upon two ſeveral tryals, that from the
beginning of pumping, the Flame went
out in about a minute of an hour. It
appear'd indeed to us that the ſwinging
of the Wier to and fro (in the Engine
ſhaken by pumping) haſten'd the vaniſh
ing of the Flame, which ſeem'd by that
motion to be caſt ſometimes on one ſide
of the Week and ſometimes on the o
ther; But though once we purpoſely
refrain'd pumping after a very few ex
ſuctions of the Air, that the Flame might
not be agitated, yet it laſted not much
longer then the newly mention'd time.

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