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the fame ftandard •: but fo the fad certainly is. If 
air extinguifh flame in confequence of its being 
previoufly fatu rated with phlogifton, it muft, in 
this cafe, have been transferred from the water 
to the air. 
To a quantity of common air, thus diminifhed 
by agitation ill water, till it extinguifhed a candle, 
I put a plant, but it did not fo far reflore it as 
-that a candle would burn in it again ; which to 
me appeared not a little extraordinary, as it did 
not feem to be in a worfe flate than air in which 
candles had burned out, and which had never 
failed to be reflored by the fame means. I had 
no better fuccefs with a quantity of permanent 
air ; which I had colleded from my pump water. 
Indeed thefe experiments were begun before I 
was acquainted with that property of nitrous air, 
which makes it fo accurate a tneafure of the good- 
nefs of other kinds of air ; and it might perhaps 
be rather too late in the year when I made the 
experiments. Having negledted thefe two jars of 
air, the plants died and putrefied in both of them ; 
and then I found the air in them both to be highly 
noxious, and to make no effervefcence with nitrous 
air. 
I found that a pint of my pump water con- 
tains about one fourth of an ounce meafure of air, 
one half of which was afterwards abforbed by 
{landing in frelh pump water. A candle would 
not burn in the air, but a moufe lived ill it very 
well. Upon the whole, it feemed to be in about 
the fame flate as air in which a candle had burned 
■out. 
i 
As 
