Anal^fn of the Air, i6^ 
artifice the air which I expired mud necef- 
farily pafs thro' all the "Diaphragms^ before 
it could be infpired into rhy lungs again. 
The whole capacity of the bladders and fy- 
phon was 4 or 5 quarts. 
Common fca fait, and Sal Tartar, being 
ftrong imbibers of fulphureous fleams, I dip- 
ped the four Diaphragms in flrong folu- 
tions of thofe fairs, as alfo in white wine 
vinegar, which is looked upon as a good 
anti-peflilential : Taking care after each of 
thefe Experiments to cleanfe the fyphon 
and bladder well from the foul air, by fil- 
ling them with water. 
I could breath too and fro the air Inclofed 
in this inflrument for a minute and half, 
when there were no Diaphragms in itj when 
the 4 Diaphragms were dipped in vinegar, 
3 minutes, when dipped in a flrong folution 
of fea fait, 3 minutes and an half. In a Lixi- 
vium of Sal Tartar ^ 3 minutes 5 when the 
Diaphragms were dipped in the like Lixi- 
vium, and then well dryed, 5 minutesj and 
once 8 -i- minutes, with very highly cal- 
cined Sal Tartar ,• but whether this was ow- 
ing to the Tartars being greatly calcined, 
whereby it might more flrongly attraft ful- 
S 4 phureous 
