C 248 ] 



the fame fhndard : "but fo the fact certainly Is. If 

 air extinguish flame in confeqnence of its being 

 previoufly fatu rated with phlogifton, it mult, in 

 this cafe, have been transferred from the water 

 to the air. 



To a quantity of common air, thus diminished 

 by agitation in water, till it extinguished a candle, 

 I put a plant, but it .did not fo far reftore 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 Irate than air in which 

 candles had burned out* and which had never 

 failed to be restored by the fame means. I had 

 no better fuccefs with a quantity Of permanent 

 sir 5 which I had collected from my pump water. 

 Indeed thefe experiments were begun before I 

 was acquainted with that property of nitrous air, 

 which makes it (o accurate a meafure 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 neglected thefe two jars of 

 air, the plants died and putrefied in both of them J 

 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 

 Handing in~frefh pump water. A candle would 

 not burn in the air, but a moufe lived in it very 

 well. Upon the whole, it feemed to be in about 

 the fame fbte as air in which a candle had burned 

 out. 1 



As 



