1ſelf, does leſs potently preſs upon the ſub
jacent Mercury.
jacent Mercury.
And ſince we are fallen upon the conſi
deration of the Altitude of the Mercurial
Cylinder, I muſt not conceal from Your
Lordſhip an Experiment relating thereun
to, which perhaps will ſet both You and
many of your Friends the Virtuoſi a think
ing; and, by diſcloſing ſome things a
bout the Air or Atmoſphere that have
ſcarce hitherto been taken notice of, may
afford you ſome hints conducive to a fur
ther diſcovery of the ſubject of this E
piſtle.
deration of the Altitude of the Mercurial
Cylinder, I muſt not conceal from Your
Lordſhip an Experiment relating thereun
to, which perhaps will ſet both You and
many of your Friends the Virtuoſi a think
ing; and, by diſcloſing ſome things a
bout the Air or Atmoſphere that have
ſcarce hitherto been taken notice of, may
afford you ſome hints conducive to a fur
ther diſcovery of the ſubject of this E
piſtle.
WE took a Glaſs Tube, which,
though it were not much above
three Foot long, we made choice of be
cauſe it was of a more then ordinarily
even thickneſs. This we fill'd with Mer
cury, though not with as much care as we
could, yet with ſomewhat more then is
wont to be uſed in making the Torricellian
Experiment. Then, having according to
the manner inverted the Tube, and open'd
the mouth of it beneath the ſurface of
ſome other Quick-ſilver, that in the Tube
fell down to the wonted heigth, leaving,
though it were not much above
three Foot long, we made choice of be
cauſe it was of a more then ordinarily
even thickneſs. This we fill'd with Mer
cury, though not with as much care as we
could, yet with ſomewhat more then is
wont to be uſed in making the Torricellian
Experiment. Then, having according to
the manner inverted the Tube, and open'd
the mouth of it beneath the ſurface of
ſome other Quick-ſilver, that in the Tube
fell down to the wonted heigth, leaving,
zoom in
zoom out
zoom area
full page
page width
set mark
remove mark
get reference
digilib