1That upon the opening the paſſage be
twixt the two Glaſſes, the Air in the
ſmaller having ſo much room in the great
er to receive it, the Diſſilition of that
Air was ſo great, that the ſmall Viol
ſeem'd to be full of Milk; and this Expe
riment we repeated ſeveral times. To
which we may adde, That, having pro
vided a ſmall Receiver, whoſe upper Ori
fice was ſo narrow that I could ſtop it with
my Thumb, I obſerv'd, that when upon
the Exſuction of the Air the capacity of
the Glaſs appear'd white, if by a ſudden
removal of my Thumb I let in the out
ward Air, that whiteneſs would imme
diately vaniſh. And whereas it may be
objected, That in the Inſtance formerly
mention'd, Water turning from perſpi
cuous to white, there intervenes the Air,
which is a Body of a Heterogeneous na
ture, and muſt turn it into Bubbles to
make it loſe its tranſparency. We may
borrow an Anſwer from an Experiment
we deliver in another Treatiſe, where we
teach how to make two very volatile Li
quors, which being gently put together
are clear as Rock-water, and yet will al
moſt in a moment, without the ſub-ingreſ
ſion of Air to turn them into Bubbles, ſo
twixt the two Glaſſes, the Air in the
ſmaller having ſo much room in the great
er to receive it, the Diſſilition of that
Air was ſo great, that the ſmall Viol
ſeem'd to be full of Milk; and this Expe
riment we repeated ſeveral times. To
which we may adde, That, having pro
vided a ſmall Receiver, whoſe upper Ori
fice was ſo narrow that I could ſtop it with
my Thumb, I obſerv'd, that when upon
the Exſuction of the Air the capacity of
the Glaſs appear'd white, if by a ſudden
removal of my Thumb I let in the out
ward Air, that whiteneſs would imme
diately vaniſh. And whereas it may be
objected, That in the Inſtance formerly
mention'd, Water turning from perſpi
cuous to white, there intervenes the Air,
which is a Body of a Heterogeneous na
ture, and muſt turn it into Bubbles to
make it loſe its tranſparency. We may
borrow an Anſwer from an Experiment
we deliver in another Treatiſe, where we
teach how to make two very volatile Li
quors, which being gently put together
are clear as Rock-water, and yet will al
moſt in a moment, without the ſub-ingreſ
ſion of Air to turn them into Bubbles, ſo