1reſted at about 29 Inches & an half above
the ſurface of the Reſtagnant Quick-ſilver
in the Veſſel, which did at firſt both amaze
and perplex us, becauſe though we held it
not improbable that the difference of the
groſſer Engliſh Air, and that of Italy and
France, might keep the Quick-ſilver from
falling quite as low in this colder, as in
thoſe warmer Climates; yet we could
not believe that that difference in the Air
ſhould alone be able to make ſo great a one
in the heights of the Mercurial Cylinders;
and accordingly upon enquiry we found,
that though the various denſity of the
Air be not to be over-look'd in this Ex
periment, yet the main Reaſon why we
found the Cylinder of Mercury to conſiſt
of ſo many Inches, was this, That our
Engliſh Inches are ſomewhat inferior in
length to the digits made uſe of in Fo
rein Parts, by the Writers of the Expe
riment.
the ſurface of the Reſtagnant Quick-ſilver
in the Veſſel, which did at firſt both amaze
and perplex us, becauſe though we held it
not improbable that the difference of the
groſſer Engliſh Air, and that of Italy and
France, might keep the Quick-ſilver from
falling quite as low in this colder, as in
thoſe warmer Climates; yet we could
not believe that that difference in the Air
ſhould alone be able to make ſo great a one
in the heights of the Mercurial Cylinders;
and accordingly upon enquiry we found,
that though the various denſity of the
Air be not to be over-look'd in this Ex
periment, yet the main Reaſon why we
found the Cylinder of Mercury to conſiſt
of ſo many Inches, was this, That our
Engliſh Inches are ſomewhat inferior in
length to the digits made uſe of in Fo
rein Parts, by the Writers of the Expe
riment.
The next thing I deſire Your Lordſhip to
take notice of, is, That the heigth of the
Mercurial Cylinder is not wont to be found
altogether ſo great as really it might
prove, by reaſon of the negligence or in
cogitancy of moſt that make the Experi
ment. For often times upon the opening
take notice of, is, That the heigth of the
Mercurial Cylinder is not wont to be found
altogether ſo great as really it might
prove, by reaſon of the negligence or in
cogitancy of moſt that make the Experi
ment. For often times upon the opening