| Boyle, Robert New experiments physico-mechanicall, touching the spring of the air and its effects 1660 |
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224
ly 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.
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
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