1ly mention'd (touching fluidity and firm
neſs) and ſubjoyn it here with alterations
ſuitable to the contrivance of our Engine;
and this the rather, becauſe I hope it may
conduce to the diſcovery of the nature of
the Atmoſphere: for which reaſon it
might have been annext to what has been
noted either upon the firſt, or eighteenth
Experiment, but that when they were
written and ſent away, it came not into
my minde. The Experiment then as we
try'd in our Engine, was as follows.
neſs) and ſubjoyn it here with alterations
ſuitable to the contrivance of our Engine;
and this the rather, becauſe I hope it may
conduce to the diſcovery of the nature of
the Atmoſphere: for which reaſon it
might have been annext to what has been
noted either upon the firſt, or eighteenth
Experiment, but that when they were
written and ſent away, it came not into
my minde. The Experiment then as we
try'd in our Engine, was as follows.
WE took one of the ſmall Receivers,
often mention'd already, and into it
we convey'd a piece of well lighted Match;
and letting it remain there till it had fill'd
the Receiver with ſmoak, we took it out
and haſtily cloſ'd again the Receiver, that
the ſmoak might not get away. Then
ſtaying awhile to let theſe fumes leiſurely
ſubſide, we found, as we expected, that
after ſome time they ſetled themſelves in
the lower half of the Receiver, in a dark
iſh Body, leaving the upper half of the
Receiver tranſparent, and as to ſight, full
of nought but clear Air. Now to mani
feſt that this ſmoak thus ſetled emulated
often mention'd already, and into it
we convey'd a piece of well lighted Match;
and letting it remain there till it had fill'd
the Receiver with ſmoak, we took it out
and haſtily cloſ'd again the Receiver, that
the ſmoak might not get away. Then
ſtaying awhile to let theſe fumes leiſurely
ſubſide, we found, as we expected, that
after ſome time they ſetled themſelves in
the lower half of the Receiver, in a dark
iſh Body, leaving the upper half of the
Receiver tranſparent, and as to ſight, full
of nought but clear Air. Now to mani
feſt that this ſmoak thus ſetled emulated
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