1the Tricker one end of a ſtring, whoſe
other end was faſten'd to the Key former
ly mention'd to belong to the Cover of
our Receiver. This done, we convey'd
the Piſtol, together with the annexed
Staff, into the Veſſel: which being cloſ'd
up, and empty'd after the uſual man
ner, we began to turn the Key in the
Cover; and thereby ſhortning the ſtring
that reach'd from it to the Piſtol, we
pull'd aſide the Tricker, and obſerv'd,
that according to our expectation the
force of the Spring of the Lock was
not ſenſibly abated by the abſence of
the Air. (from whoſe impetus yet ſome
Modern Naturaliſts would derive the
cauſe of the motion of Reſtitution in
ſolid Bodies) For the Cock falling
with its wonted violence upon the Steel,
ſtruck out of it as many and as conſpi
cuous parts of Fire, as, for ought we
could perceive, it would have done in
the open Air. Repeating this Experi
ment divers times, we alſo obſerved
whether or no there would appear
any conſiderable Diverſity in the
Motion of the ſhining Sparks in a
place where the remaining Aire was
ſo much rarified, but could not perceive
other end was faſten'd to the Key former
ly mention'd to belong to the Cover of
our Receiver. This done, we convey'd
the Piſtol, together with the annexed
Staff, into the Veſſel: which being cloſ'd
up, and empty'd after the uſual man
ner, we began to turn the Key in the
Cover; and thereby ſhortning the ſtring
that reach'd from it to the Piſtol, we
pull'd aſide the Tricker, and obſerv'd,
that according to our expectation the
force of the Spring of the Lock was
not ſenſibly abated by the abſence of
the Air. (from whoſe impetus yet ſome
Modern Naturaliſts would derive the
cauſe of the motion of Reſtitution in
ſolid Bodies) For the Cock falling
with its wonted violence upon the Steel,
ſtruck out of it as many and as conſpi
cuous parts of Fire, as, for ought we
could perceive, it would have done in
the open Air. Repeating this Experi
ment divers times, we alſo obſerved
whether or no there would appear
any conſiderable Diverſity in the
Motion of the ſhining Sparks in a
place where the remaining Aire was
ſo much rarified, but could not perceive