1employ'd to fill up the little Crannies left
betwixt them, were conſiderable in this
Experiment; by which may among other
things appear, that I did not without
cauſe in the above-nam'd Diſcourſe touch
ing Fluidity and Firmneſs, aſcribe a great
force, ev'n to ſuch Pillars of Air as may
be ſuppoſ'd to begin at the top of the
Atmoſphere, and recoyling from the
ground to terminate on the Bodies on
which they preſs: ſince in the preſent Ex
periment ſuch a weight was ſupported by
ſo ſlender a Cylinder of Air, rebounding
from the Earth to the Valve whereon it
did bear.
betwixt them, were conſiderable in this
Experiment; by which may among other
things appear, that I did not without
cauſe in the above-nam'd Diſcourſe touch
ing Fluidity and Firmneſs, aſcribe a great
force, ev'n to ſuch Pillars of Air as may
be ſuppoſ'd to begin at the top of the
Atmoſphere, and recoyling from the
ground to terminate on the Bodies on
which they preſs: ſince in the preſent Ex
periment ſuch a weight was ſupported by
ſo ſlender a Cylinder of Air, rebounding
from the Earth to the Valve whereon it
did bear.
BUt in regard we have not yet been
able to empty ſo great a Veſſel as our
Receiver, ſo well as we can the Cylinder
it ſelf; our Pump alone may afford us a
nobler inſtance of the fotce of the Air we
live in, inſomuch, that by help of this
part of our Engine, we may give a pretty
near gheſs at the ſtrength of the Atmo
ſphere, computed as a weight. And the
way may be this; Firſt, the Sucker be
ing brought to move eaſily up and down
the Cylinder, is to be impell'd to the top
able to empty ſo great a Veſſel as our
Receiver, ſo well as we can the Cylinder
it ſelf; our Pump alone may afford us a
nobler inſtance of the fotce of the Air we
live in, inſomuch, that by help of this
part of our Engine, we may give a pretty
near gheſs at the ſtrength of the Atmo
ſphere, computed as a weight. And the
way may be this; Firſt, the Sucker be
ing brought to move eaſily up and down
the Cylinder, is to be impell'd to the top