1were deſirous to try whether or no the
preſſure of the Air might reaſonably be
ſuppoſ'd to have either the principal, or at
leaſt a conſiderable Intereſt in the raiſing
of thoſe Liquors. But becauſe we found
that we could not yet ſo evacuate our Re
ceiver, but that the remaining Air,
though but little in compariſon of the
exhauſted, would be able to impell the
the Water to a greater height then is
uſual in ordinary Filtrations: we reſolved,
inſtead of a Liſt of Cotton, or the like
Filtre, to make uſe of a Siphon of Glaſs,
delineated in the third Figure, conſiſt
ing of three pieces, two ſtraight, and
the third crooked to joyn them toge
ther; whoſe Junctures were diligently
cloſ'd, that no Air might finde entrance
at them. One of the Legs of this Si
phon was (as it ſhould be) ſomewhat
longer then the other, and was pervious
at the bottom of it onely, by a hole al
moſt as ſlender as a hair, that the
Water might but very leaſurely drop
out of it, leſt it ſhould all run out
before the Experiment were compleat
ed. The other and ſhorter Leg of
the Siphon was quite open at the end,
and of the ſame wideneſſe with the
preſſure of the Air might reaſonably be
ſuppoſ'd to have either the principal, or at
leaſt a conſiderable Intereſt in the raiſing
of thoſe Liquors. But becauſe we found
that we could not yet ſo evacuate our Re
ceiver, but that the remaining Air,
though but little in compariſon of the
exhauſted, would be able to impell the
the Water to a greater height then is
uſual in ordinary Filtrations: we reſolved,
inſtead of a Liſt of Cotton, or the like
Filtre, to make uſe of a Siphon of Glaſs,
delineated in the third Figure, conſiſt
ing of three pieces, two ſtraight, and
the third crooked to joyn them toge
ther; whoſe Junctures were diligently
cloſ'd, that no Air might finde entrance
at them. One of the Legs of this Si
phon was (as it ſhould be) ſomewhat
longer then the other, and was pervious
at the bottom of it onely, by a hole al
moſt as ſlender as a hair, that the
Water might but very leaſurely drop
out of it, leſt it ſhould all run out
before the Experiment were compleat
ed. The other and ſhorter Leg of
the Siphon was quite open at the end,
and of the ſame wideneſſe with the
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