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

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1ternal Air, both the inward part of the
Cork, and the Liquor it ſelf, do preſent­
ly ſend upwards, and ſcatter abroad a
fume as thick and white, as if there were
a quantity of Alablaſter-duſt thrown up
into the Air: And this ſmoking of the
Liquor laſts till my unwillingneſs to waſte
it, invites me ſtop it again; and then the
aſcenſion of the fumes ſuddenly ceaſes, till
the Viol be again unſtop'd.
This fuming Liquor then I thought
would much conduce to the diſcovery I
deſir'd to make, ſince it ſav'd me the need
of conveying any hot Body with it into
the Receiver, and would not darken it
with fumes before the time.
Wherefore
having ty'd to the Viol a great weight of
Lead, to keep it from being lifted up by
the drawing out of the Cork; and having
ty'd to the ſtopple one end of a ſtring, of
which the other end was made faſt to the
Cover of the Pneumatical Glaſs, the Li­
quor was carefully cloſ'd up after the
wonted manner; then the Air being dili­
gently pump'd out, the Viol was unſtopt
in the empty'd Receiver: and though
immediately, npon the drawing out of the
Cork, there appear'd to be as it were
thrown up ſome white fumes, which

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