1ned and diligent Ricciolus, having pur
poſely endeavoured to inveſtigate this
proportion by meanes of a thin blad
der, eſtimates the weight of the Air to
that of the Water to be as one to ten
thouſand, or thereabouts. And indeed I re
member that having formerly, on a cer
tain occaſion, weighed a large bladder full
of Air, and found it when the Air was all
ſqueeſed out, to have contained fourteen
graines of Air. I found the ſame bladder
afterwards fill'd with water to containe
very neer 14. pound of that liquor: accor
ding to which account, the proportion of
Air to Water was almoſt as a graine to a
pound, that is, as one to above 7600. To
this we may adde, that on the other ſide,
Galileo himſelfe uſing another, but an un
accurate way too, defined the Air to be
in weight to Water, but as one to 4. hun
dred. But the way formerly propoſed of
weighing the Air by an Æolipile, ſeemes
by great oddes more exact; and (as farre
as we could gheſſe) ſeemed to agree well
enough with the experiment made in our
Receiver. Wherefore it will be beſt to
truſt our Æolipile in the enquiry we are a
bout, and according to our obſervations
the water it contained amounting to one
poſely endeavoured to inveſtigate this
proportion by meanes of a thin blad
der, eſtimates the weight of the Air to
that of the Water to be as one to ten
thouſand, or thereabouts. And indeed I re
member that having formerly, on a cer
tain occaſion, weighed a large bladder full
of Air, and found it when the Air was all
ſqueeſed out, to have contained fourteen
graines of Air. I found the ſame bladder
afterwards fill'd with water to containe
very neer 14. pound of that liquor: accor
ding to which account, the proportion of
Air to Water was almoſt as a graine to a
pound, that is, as one to above 7600. To
this we may adde, that on the other ſide,
Galileo himſelfe uſing another, but an un
accurate way too, defined the Air to be
in weight to Water, but as one to 4. hun
dred. But the way formerly propoſed of
weighing the Air by an Æolipile, ſeemes
by great oddes more exact; and (as farre
as we could gheſſe) ſeemed to agree well
enough with the experiment made in our
Receiver. Wherefore it will be beſt to
truſt our Æolipile in the enquiry we are a
bout, and according to our obſervations
the water it contained amounting to one
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