* 



Adctlyfis of the Air. 1 7 1 



a quart of air. I then tilled the receiver 

 with irefh air ; by pouring it full of water, 

 and then emptying of it ; when having wiped 

 it dry, I lined all the infide with a 

 piece of flannel dipped in a lixivium of Sal 

 Tartar, and then dryed ; the flannel was ex- 

 tended with little hoops made of pliant twigs. 

 The Candle continued burning under the re- 

 ceiver thus prepared 3 ~\- \ minutes, yet it 

 abibrbed 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 abibrbed in lead receivers, which 

 was theprefent 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? 

 for which reafon lefs air alfo was absorbed. 



And we may further obferve, that fince 

 the Candle continued burning as long in a 

 quantity of air, equal but to two thirds of 



4 the 





, 





>J 



\ m 



