-- hy =} 
an inverted jar fullof water. The 
nitrous air,. thus difengaged, rifes 
through -the water, and fettles. at 
the inverted bottom of the jar. 
Mercury yields the itrongeft nitrous 
air, and. always of the fame qua- 
lity; but heat muft be applied for 
its Sxicater ia, 
fon angiitaes fake “copper, from 
which. nitrous air ‘is Sone re, in 
seers, 
ee ee 
applying. ite ay “The Ae “acid 
mutt be diluted WwW vith, W ater for’ the 
: waters, whole bottoms are ‘marhhy, 
when the eon is flirred up with 
a cam vis Balla, extratted a ess 
Ths 
