c <5, ] 
which I fixed a Bladder, fqueezed and void of Air, to 
the Pipe of the Receiver. The Oil and ’T^hlegm 
defcended into the Receiver, but the Spirit, ftill 
afcending, blew up the Bladder. 1 then filled a good 
many Bladders therewith, and might have filled an 
inconceiveable Number more ; for the Spirit con- 
tinued to rife for feveral Hours, and filled the Blad- 
ders almoft as faft as a Man could have blown them 
with his Mouth; and yet the Quantity of Coals I 
diftilled were inconfiderable. 
I kept this Spirit in the Bladders a confiderablc 
time, and endeavour’d feveral ways to condenfe it, 
but in vain. And when I had a Mind to divert 
Strangers or Friends, 1 have frequently taken one of 
thefe Bladders, and pricking a Hole therein with a 
Pin, and comprefling gently the Bladder near the 
Flame of a Candle till it once took Fire, it would 
then continue flaming till all the Spirit was com- 
preffed out of the Bladder j which was the more fur- 
prifing, becaufe no one could difcern any Difference 
in the Appearance between thefe Bladders and thofe 
which are filled with common Air. 
But then I found, that this Spirit muft be kept in 
good thick Bladders, as in thofe of an Ox, or the like ; 
for if I filled Calves Bladders therewith, it would lofe 
its Inflammability in 24 Hours, though the Bladder 
became not relax at all. 
yi. An 
