1Recent Aſtronomers, who ſeem willing
to enlarge its bounds as much as they dare,
does reach.
to enlarge its bounds as much as they dare,
does reach.
But leſt you ſhould expect my ſeconding
this Reaſon by Experience; and leſt you
ſhould object, That moſt of the Experi
ments that have been propoſ'd to prove the
gravity of the Air, have been either barely
propoſ'd, or perhaps not accuratly try'd; I
am content, before I paſs further, to menti
on here, That I found a dry lambs-bladder
containing near about two thirds of a pint,
and compreſſ'd by a packthred tyed about
it, to looſe a grain and the eighth part of
a grain of its former weight, by the receſs
of the Air upon my having prickt it: And
this with a pair of Scales, which when the
full Bladder and the correſpondent weight
were in it, would manifeſtly turn either
way with the 32 part of a grain. And if
it be further objected, That the Air in
the Bladder was violently compreſſ'd by
the Pack-thred and the ſides of the
Bladder, we might probably (to wave
prolix anſwers) be furniſh'd with a Re
ply, by ſetting down the differing weight
of our Receiver, when empty'd and when
full of uncompreſſ'd Air, if we could here
procure ſcales fit for ſo nice an experiment;
this Reaſon by Experience; and leſt you
ſhould object, That moſt of the Experi
ments that have been propoſ'd to prove the
gravity of the Air, have been either barely
propoſ'd, or perhaps not accuratly try'd; I
am content, before I paſs further, to menti
on here, That I found a dry lambs-bladder
containing near about two thirds of a pint,
and compreſſ'd by a packthred tyed about
it, to looſe a grain and the eighth part of
a grain of its former weight, by the receſs
of the Air upon my having prickt it: And
this with a pair of Scales, which when the
full Bladder and the correſpondent weight
were in it, would manifeſtly turn either
way with the 32 part of a grain. And if
it be further objected, That the Air in
the Bladder was violently compreſſ'd by
the Pack-thred and the ſides of the
Bladder, we might probably (to wave
prolix anſwers) be furniſh'd with a Re
ply, by ſetting down the differing weight
of our Receiver, when empty'd and when
full of uncompreſſ'd Air, if we could here
procure ſcales fit for ſo nice an experiment;