1And laſtly, cloſing up the ſame Taper,
lighted again, to diſcover how long it
would laſt without drawing out of the
Air, we found that it burn'd for a while
vividly enough, but afterwards began to
be leſſen'd more and more in all its Di
menſions. And we obſerv'd that the
Flame did not, as before, retire it ſelf by
little and little towards the top, but to
wards the bottom of the Week (from
which yet it did a little withdraw upwards
juſt before it went out) ſo that the upper
part of the Week appear'd for a pretty
while manifeſtly above the top of the
Flame, which having laſted about five
minutes, was ſucceeded by a directly aſ
cending ſtream of Smoak.
lighted again, to diſcover how long it
would laſt without drawing out of the
Air, we found that it burn'd for a while
vividly enough, but afterwards began to
be leſſen'd more and more in all its Di
menſions. And we obſerv'd that the
Flame did not, as before, retire it ſelf by
little and little towards the top, but to
wards the bottom of the Week (from
which yet it did a little withdraw upwards
juſt before it went out) ſo that the upper
part of the Week appear'd for a pretty
while manifeſtly above the top of the
Flame, which having laſted about five
minutes, was ſucceeded by a directly aſ
cending ſtream of Smoak.
THere was taken a Wier, which being
bent almoſt in the form of a Screw,
conſtituted ſuch an Inſtrument to contein
Coals and leave them every way acceſſi
ble to the Air, as the tenth Figure de
clares; the breadth of this Veſſel was no
leſs then that it might with eaſe be con
vey'd into the Receiver: And having filld
it to the height of about five Inches with
throughly kindled Wood-coals, we let
bent almoſt in the form of a Screw,
conſtituted ſuch an Inſtrument to contein
Coals and leave them every way acceſſi
ble to the Air, as the tenth Figure de
clares; the breadth of this Veſſel was no
leſs then that it might with eaſe be con
vey'd into the Receiver: And having filld
it to the height of about five Inches with
throughly kindled Wood-coals, we let