234 Analyfis of the Air . 
der the receiver, by means of a burning-glafs, 
which fet fire to a fmali piece of brown pa- 
per fixed to the wick of a Candle, which 
paper had been firft dipped in a ftrong folu- 
tion of Nitre in Water, and when well 
dried, part of it was dipped in melted Brim - 
ftonet, it will alfo light the Candle without 
being dipped in Brimftone . Dr. Mayow , 
found the bulk of the air lefiened by T V part, 
but does not mention the fize of the dafs 
veffel under which he put the lighted Can- 
dle, Sp. Nitro aereo.p. 101. The capa- 
city of the veffel above zz 9 in which the 
Candle burnt in my Experiment, was equal 
to 1024. cubicle inches > and the elafticity of 
the -re part of this air was deftroyed. 
The Candle cannot be lighted again in 
this infeded air by a burning-glals : But if 
I firft lighted it, and then put it into the 
fame infeded air, tho* it was extinguished 
in t part of the time, that it would burn in 
the fame veffel, full of frefh air 5 yet it 
would deftroy the elafticity of near as much 
air in that Short time, as it did in five times 
that fpace of time in frefh air 5 this I re- 
peated feverai times, and found the fame 
event : Hence a grofs air which is loaded 
with vapours, is more apt in equal times to 
lofe, 
