[ Iv ] 

 This air has in common with almoft 

 all other inflammable fubftances, 

 that it is not fufceptible of actual in- 

 flammation, without it be in con- 

 tact with common or refpirable air. 

 This air has the following qualities 

 by which it may be known: it is 

 not abforbed by making it in water; 

 it is not diminiihed by the addition 

 of nitrous air; it is inftantly and ab- 

 folutely mortal to animals breathing 

 in it; it burns by the approach of 

 the flame of a candle, where it is in 

 contact with common air; but the 

 whole of it inflames at once, and 

 explodes with a loud report, when 

 it is intimately mixed with com- 

 mon, and principally with dephjo- 

 gifticated air. 



Phlogijlicated air is, properly, air 



impregnated with phlogifton, or 



with the inflammable principle, It 



d 4 has 



