[ Ivi ] 



has received this name becaufe 

 common air, expofed to the calci- 5 

 nation of metals, becomes phlogifti- 

 cated air; which alteration feems to 

 depend on the phlogiflon of the 

 metal being communicated to it, for 

 the metal itfelf has loft it in the 

 calcination; and becaufe the burn- 

 ing of a candle, and many other 

 phlogiftic procefTes, impart to com- 

 mon air this quality. The air re- 

 turning from our lungs is faid to 

 be phlogifticated more or lefs, be- 

 caufe it is found to pofTefs the fame 

 qualities as the air expofed to the 

 calcination of metals. This kind 

 of air is known by the following 

 properties: it is not abforbed by 

 water ; it is not, or not much, dimi- 

 nifhed by nitrous air; it is poifonous 

 for an animal who breathes in it; 

 it is not inflammable either by it- 

 felf 



