Boyle, Robert, New experiments physico-mechanicall, touching the spring of the air and its effects, 1660

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1deal of Air and Smoke mixt together was
drawn out, whereby the Receiver grow­
ing more clear, we could diſcern the Fire
in the Match to burn more and more lan­
guidly: And notwithſtanding that by the
diligence uſ'd in Pumping, it ſeem'd to
have room enough allow'd it to throw
out Fumes; yet after no long time it
ceaſ'd from being diſcernable either by its
Light or its Smoke.
And though by
that we were invited to ſuppoſe it quite
extinguiſhed, yet we continu'd pumping
a while, in proſecution of another Expe­
riment we were trying at the ſame time:
And this we did the more willingly be­
cauſe of a ſuſpicion the Experiment a­
bout the Coals might eaſily ſuggeſt, and
which the event declar'd not to have been
altogether groundleſs.
For upon the
Admiſſion of the external Air, the Fire,
that ſeem'd to have gone out a pretty
while before, did preſently revive; and
being as it were refreſh d by the new Air,
and blown by the Wind made by that
Air in ruſhing in, it began again to ſhine
and diſſipate the neighboring Fuel into
Smoke as formerly.

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