1 his Imployment: after which the aire be-
ing leaſurely let in againe, the ſcales by
degrees returned to their former Aequili-
brium.After that we tooke them out, and
caſting into that ſcale to which the lead
belong'd three quarters of a grain, we
convey'd the ballance into the Recei-
ver, which being cloſed up, and exhau-
ſted as before, we obſerv'd, that as the
aire was drawne out more and more, ſo
the glaſſe bubble came neerer and neer-
er to an Aequilibrium with the other
weight, till at length the beame was
drawne to hang horizontall; which (as
we had found by another tryall) wee
could not bring it to do, when a quar-
ter of a Graine more was added to
the ſcale, to which the lead belong'd:
though it ſeem'd queſtionleſſe, that if
wee could have perfectly empty'd the
Receiver of the contain'd aire, that in-
cluded, in the bubble would have weigh-
ed above a grain, notwithſtanding its
having been probably ſomewhat Rari-
fy'd by the flame by the help of which,
the bubble was ſeald up.Let us adde,
that on the regreſſe of the excluded
air, the Lead, and the weight caſt into the
ing leaſurely let in againe, the ſcales by
degrees returned to their former Aequili-
brium.After that we tooke them out, and
caſting into that ſcale to which the lead
belong'd three quarters of a grain, we
convey'd the ballance into the Recei-
ver, which being cloſed up, and exhau-
ſted as before, we obſerv'd, that as the
aire was drawne out more and more, ſo
the glaſſe bubble came neerer and neer-
er to an Aequilibrium with the other
weight, till at length the beame was
drawne to hang horizontall; which (as
we had found by another tryall) wee
could not bring it to do, when a quar-
ter of a Graine more was added to
the ſcale, to which the lead belong'd:
though it ſeem'd queſtionleſſe, that if
wee could have perfectly empty'd the
Receiver of the contain'd aire, that in-
cluded, in the bubble would have weigh-
ed above a grain, notwithſtanding its
having been probably ſomewhat Rari-
fy'd by the flame by the help of which,
the bubble was ſeald up.Let us adde,
that on the regreſſe of the excluded
air, the Lead, and the weight caſt into the