436 Abbe fontana’s Account of Airs 
Another time I filled a glafs retort, which had a long 
and doubly bent neck, with Seine water. The water 
weighed about three pounds. The air that came out of 
it loft a quarter of its bulk by being fliaken in water ; and 
afterwards being tried with nitrous air it gave II- 16, 
II- 1 6, III- 1 6, when common and nitrous air gave 
II-12, II + 1 2. 
This experiment being repeated, the air w r as dimi- 
nilhed of one quarter by being fliaken in water. One 
meafure -16 parts of this air introduced into the mea- 
furing tube gave II- 3 2, II- 2, when common air and 
the nitrous gave II- 28 , 11 + 4. 
The water d’Arqeuil at Paris is confidered as very 
pure. I filled the tin veflel above mentioned with it, and 
received the air that came out of it into three veflels. 
Being fliaken in water, the firft of them was diminiflied 
one fifth; the fecond, three fourths; and the third 
by the operation in water. A light burned with a flame, 
more luminous than in common air, in the firft air after 
it had been fliaken in water. This air being tried with 
the nitrous air gave II- 1 o, II- 1 o, III- 1 o. The fecond 
gave II - 1 o, II- 1 7, III - 30, when common and nitrous 
air gave II- 2, II + 1 4, III +14. The third air, before it 
was fliaken in w r ater, cryftallized with the oil of tartar 
like fixed air. An equal bulk of it was abforbed by 
3 
water, 
