1ver two black ſquare marbles (the one of
two inches and a third in length or
breadth, and ſomewhat more than halfe
an inch in thickneſs: The other of the ſame
extent, but not much above halfe ſo
thick) faſten'd together by the interven
tion of pure Spirit of Wine; and having
ſuſpended the thicker by a ſtring from the
cover, we found not that the exſuction of
the ambient Air would ſeparate them,
though a weight amounting to four oun
ces were faſten'd to the lowermoſt mar
ble to facilitate it's falling off.
two inches and a third in length or
breadth, and ſomewhat more than halfe
an inch in thickneſs: The other of the ſame
extent, but not much above halfe ſo
thick) faſten'd together by the interven
tion of pure Spirit of Wine; and having
ſuſpended the thicker by a ſtring from the
cover, we found not that the exſuction of
the ambient Air would ſeparate them,
though a weight amounting to four oun
ces were faſten'd to the lowermoſt mar
ble to facilitate it's falling off.
Experi
ment 31,
ment 31,
I would gladly have the Experiment
try'd with marble ſo well polliſh't as to
need no Liquor whatſoever to make them
cohere, and in a Veſſel out of which the
Air may be more perfectly drawn than it
was out of ours. But in the mean time
though we will not determin whether the
Spirit of wine did contribute to the ſtrong
coheſion of theſe ſtones, otherwiſe than
by keeping ev'n the ſubtl'ſt parts of the
Air from getting in between them, yet it
ſeemed that the not falling downe of the
lowermoſt marble might without impro
bability be aſcrib'd to the preſſure of the
Air remaining in the Receiver; which as
we formerly noted having been able
try'd with marble ſo well polliſh't as to
need no Liquor whatſoever to make them
cohere, and in a Veſſel out of which the
Air may be more perfectly drawn than it
was out of ours. But in the mean time
though we will not determin whether the
Spirit of wine did contribute to the ſtrong
coheſion of theſe ſtones, otherwiſe than
by keeping ev'n the ſubtl'ſt parts of the
Air from getting in between them, yet it
ſeemed that the not falling downe of the
lowermoſt marble might without impro
bability be aſcrib'd to the preſſure of the
Air remaining in the Receiver; which as
we formerly noted having been able