[ Ivii ] 



felf or by the addition of refpira- 

 ble air, but extinguifhes flame. 



Depblogifticated air is that pure, 

 etherial, permanent, and elaftic fluid 

 which the celebrated Dr. Prieftley 

 found out the nrft, and gave this 

 very well adapted name to it. It is 

 refpirable air, defiitute of the phlo- 

 giftic or inflammable principle with 

 which the beft atmofpheric air is 

 found always to be more or lefs con- 

 taminated. It is in reality com- 

 mon air of the higher! purity, fuch 

 as never exifts in the common at- 

 mofphere. It is even fo far fuperior 

 in purity to common air, that an 

 animal fhut up in a veflel, filled 

 with this air, protracts its life four 

 or five times, nay even in fome cafes 

 feven times longer, than if it was 

 mut up in a vefTel filled with the 

 beft atmofpheric or common air. 



Some 



