266 Analyfis of the Air. 
phragms , before it could be infpired into 
my lungs again. The whole capacity of the 
bladders and fyphon was 4 or 5 quarts. 
Common fea-falt, and SalTartar , being 
ftrong imbibers of fulphureous fleams, I 
dipped the four "Diaphragms in ftrong folu- 
tions of thofe faits, as alfo in white wine 
vinegar, which is looked upon as a good 
anti-peftilential : Taking care after each of 
rhefe Experiments to cleanfe the fyphon and 
bladder well from the foul air, by filling 
them with water. 
I could breathe too and fro the air inclofed 
in this inftrument for a minute and half, 
when there were no Diaphragms in it 3 
when the ^Diaphragms were 'dipped in vi- 
negar, 3 minutes 5 when dipped in a flrong 
folution of fea-falt, 3 minutes and an half. 
In a Lixivium of Sal Tartar , 3 minutes j 
when the Diaphragms were dipped in the 
like Lixivium, and then well dried, 5 mi- 
nutes, and once S -f? minutes, with very 
highly calcined Sal Tartan, but whether 
this was owing to the Tartar's being greatly 
calcined, whereby it might more ftrongly 
attrad fulphureous grofs vapours, or whe- 
ther it was owing to the bladder and fy- 
phon’s being entirely dry, or whether it was 
occ^- 
