Analyfts of the Air. 271 
a quart of air. I then filled the receiver 
with frcfh air, by pouring it full of water, 
and then emptying of it 5 when having wiped 
it dry, I lined all the infide with a 
piece of flannel dipped in a lixivium of Sal 
Tartar^ and then dryedj the flannel was ex- 
tended with little hoops made of pliant twigs. 
The Candle continued burning under the re- 
ceiver thus prepared 3 + t minutes, yet it 
abforbed but two thirds of the quantity of 
air which it abforbed when there was no 
flannel in the receiver. 
The reafon of which difference in the 
quantities of elaftick air abforbed, appears 
from Experiment 106. where lead air was 
always abforbed in leaft receivers, which 
was the prefent cafe : For the flannel lining, 
befides the fpace it took up, could not be fo 
clofely adapted, but that there was left a full 
third of the capacity of the receiver, between 
the lining and the receiver : So that the 
Candle burnt in a bulk of air lefs by one 
third than the whole capacity of the receiver j 
for which reafon lefs air alfo was abforbed. 
And we may further obferve, that fincc 
the Candle continued burning as long in a 
quantity of air, equal but to two thirds of 
4. the 
