Abbe fontana’s Account of Airs, Sec. 433 
filled with water : the air which came out of it was re- 
ceived into three different veiiels. The air of the fir ft 
veffel, by being fliaken in water, was diminifhed a little; 
the air of the fecond was diminifhed of half its bulk, or 
rather more; and the air of the third veffel was dimi- 
nifhed exceedingly. The refiduums of air that remained 
unabforbed were more or lefs phlogifticated. 
Another time I obtained almoft entirely fixed air, ex- 
cepting a little which remained unabforbed by water, 
and was partly phlogifticated. 
A third time the air of the water of a well, obtained 
as above, was made to pafs through mercury into a tube 
anointed with oil of tartar, and it occafioned a cryftalliza- 
tion juft like that which the pureft fixed air is ufed to do. 
A fourth time I impregnated with this air a quantity 
of common water, which abforbed its own bulk of it, 
and became by thefe means acidulous, exactly like water 
with the pureft fixed air. This water turned the tincfture 
of turnfole red, and precipitated the lime in lime water. 
Another time a light was fucceflively extinguifhed, and 
a bird died inftantly in this air. 
The water of the river Seine, filtrated through fand, 
as it is drunk at Paris, was treated in the fame manner as 
the water of the well. The air extracted from that wa- 
ter was half abforbed by water, when fliaken in it; the 
remainder. 
