& 
F 116 | 
ts natural ftate was really an aif 
approaching in quality to common 
air; and that the heat of the ebul 
lition had changed this very air into 
phlogifiicated air, in the fame way 
as the act of fermentation changes . 
it into fixed air, the light of the fun 
into ERE dephlogifticated air, the 
2} ‘in the ftomach and the 
3 nes “SE: an animal (a great deal 
‘of the air contained in the inteftines, 
and all that from which we eafé 
ourfelves by the rectum, is pure 
inflammable air) and actual-fire ap+ 
plied to itinto inflammable air, and 
the obfeurity of the night into an-_ 
othef kind of truly poifonous air? 
‘Could it be faid with any degree of 
probability, that one and the fame 
vegetable contains thefe fix kinds 
_of air, fo different in their nature, 
and even contrary to one another * 
