1very great compreſſion, which the weight
of the incumbent part of the Atmo
ſphere is very ſufficient to give thoſe that
be undermoſt and near the ſurface of the
Earth. And if we recall to minde thoſe
former Experiments, whereby we have
manifeſted, That Air, much rarefied with
out heat, may eaſily admit a further ra
refaction from heat; and that the Air, even
without being expanded by heat, is capa
ble of being rarefied to above one hundred
and fifty times the extent it uſually poſ
ſeſſes here below; How can it be demon
ſtrated that the Atmoſphere may not, for
ought we know, or at leaſt for ought can
be determin'd by our Statical and Mecha
nical Experiments, riſe to the height of
Five and twenty German Leagues, if not
of ſome hundred of common Miles?
of the incumbent part of the Atmo
ſphere is very ſufficient to give thoſe that
be undermoſt and near the ſurface of the
Earth. And if we recall to minde thoſe
former Experiments, whereby we have
manifeſted, That Air, much rarefied with
out heat, may eaſily admit a further ra
refaction from heat; and that the Air, even
without being expanded by heat, is capa
ble of being rarefied to above one hundred
and fifty times the extent it uſually poſ
ſeſſes here below; How can it be demon
ſtrated that the Atmoſphere may not, for
ought we know, or at leaſt for ought can
be determin'd by our Statical and Mecha
nical Experiments, riſe to the height of
Five and twenty German Leagues, if not
of ſome hundred of common Miles?
4.
10.
10.
And this conjecture it ſelf may appear
very injurious to the height whereunto
Exhalations may aſcend, if we will allow
that there was no miſtake in that ſtrange
Obſervation made at Tolous in a clear
Night in Auguſt, by the diligent Ma
thematician Emanuel Magnan, and thus
Recorded by Ricciolus, (for I have not at
hand the Authors own Book) Vidit (ſays
he) ab hor a undecima poſt meridiem uſ〈qué〉 ad
very injurious to the height whereunto
Exhalations may aſcend, if we will allow
that there was no miſtake in that ſtrange
Obſervation made at Tolous in a clear
Night in Auguſt, by the diligent Ma
thematician Emanuel Magnan, and thus
Recorded by Ricciolus, (for I have not at
hand the Authors own Book) Vidit (ſays
he) ab hor a undecima poſt meridiem uſ〈qué〉 ad
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