1pect, that by the ſame means Water
might be brought to ſubſide in Glaſs
Tubes of a moderate length, though by
the noble Experiment, ſaid to have been
accurately made in France by Monſieur
Paſchal, we are informed that a Tube of
no leſs then about two and thirty Foot,
was found requiſite to make the Experi
ment De Vacuo ſucceed with Water in
ſtead of Quick-ſilver: ſo tall a Cylinder
of that lighter Liquor, being, it ſeems,
requiſite to equal the weight of a Mercu
rial Cylinder of ſix or ſeven and twenty
digits, and ſurmount the preſſure of the
Atmoſphere.
might be brought to ſubſide in Glaſs
Tubes of a moderate length, though by
the noble Experiment, ſaid to have been
accurately made in France by Monſieur
Paſchal, we are informed that a Tube of
no leſs then about two and thirty Foot,
was found requiſite to make the Experi
ment De Vacuo ſucceed with Water in
ſtead of Quick-ſilver: ſo tall a Cylinder
of that lighter Liquor, being, it ſeems,
requiſite to equal the weight of a Mercu
rial Cylinder of ſix or ſeven and twenty
digits, and ſurmount the preſſure of the
Atmoſphere.
Experi
ment 19.
ment 19.
We took then a Tube of Glaſs, Her
metically ſeal'd at one end, of about four
foot in length, and not very ſlender: This
at the open end we fill'd with common
Water, and then ſtopt that end till we
had inverted the Tube, and open'd it be
neath the ſurface of a quantity of the like
Water, contain'd in a ſomewhat deep and
ſlender Veſſel. This Veſſel, with the
Tube in it, was let down into the Recei
ver, and the Receiver being cloſ'd up af
ter the accuſtom'd manner, the Pump was
ſet awork.
metically ſeal'd at one end, of about four
foot in length, and not very ſlender: This
at the open end we fill'd with common
Water, and then ſtopt that end till we
had inverted the Tube, and open'd it be
neath the ſurface of a quantity of the like
Water, contain'd in a ſomewhat deep and
ſlender Veſſel. This Veſſel, with the
Tube in it, was let down into the Recei
ver, and the Receiver being cloſ'd up af
ter the accuſtom'd manner, the Pump was
ſet awork.