1out of the Receiver into the empty'd Cy
linder, the Air in the Receiver being ſud
denly and vehemently expanded, the Tex
ture of it was as ſuddenly alter'd, and the
parts made ſo to ſhift places (and perhaps
ſome of them to change poſtures) as du
ring their new and vehement Motion and
their varied Scituation, to diſturb the
wonted continuity and ſo the Diapha
neity of the Air; which (as we have alrea
dy noted) upon its ceaſing to be a tran
ſparent Body, without the interpoſition
of colour'd things, muſt eaſily degene
rate into white.
linder, the Air in the Receiver being ſud
denly and vehemently expanded, the Tex
ture of it was as ſuddenly alter'd, and the
parts made ſo to ſhift places (and perhaps
ſome of them to change poſtures) as du
ring their new and vehement Motion and
their varied Scituation, to diſturb the
wonted continuity and ſo the Diapha
neity of the Air; which (as we have alrea
dy noted) upon its ceaſing to be a tran
ſparent Body, without the interpoſition
of colour'd things, muſt eaſily degene
rate into white.
Several things there were that made
this Conjecture ſeem the leſs improba
ble. As firſt, That the whiteneſs al
ways appear'd greater when the Exſucti
on began to be made, whil'ſt there was
ſtore of Air in the Receiver, then when
the Air was in great part drawn out. And
next, That, having exhauſted the Re
ceiver, and apply'd to the hole in the
Stop-cock a large bubble of clear Glaſs, in
ſuch a manner, that we could at pleaſure let
the Air paſs out at the ſmall Glaſs into the
great one, and eaſily fill the ſmall one with
Air again, We obſerv'd with pleaſure,
this Conjecture ſeem the leſs improba
ble. As firſt, That the whiteneſs al
ways appear'd greater when the Exſucti
on began to be made, whil'ſt there was
ſtore of Air in the Receiver, then when
the Air was in great part drawn out. And
next, That, having exhauſted the Re
ceiver, and apply'd to the hole in the
Stop-cock a large bubble of clear Glaſs, in
ſuch a manner, that we could at pleaſure let
the Air paſs out at the ſmall Glaſs into the
great one, and eaſily fill the ſmall one with
Air again, We obſerv'd with pleaſure,
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