t 64 ] 



air occupied 0.95. The foul air 

 now was Hot only become as good 

 as refpirable air, or air of the at- 

 inofphere, but even furpafTed it in 

 goodnefs, for one meafure of it with 

 one of nitrous air occupied 1.05. 



Now, as the fame plant brought 

 the foul air from 1.34 to T.05, and 

 the common air from 1 .06^ to 0.95, 

 it appears clear, that the plant had 

 corrected the foul air far more than 

 it had improved the common air. 



This experiment was repeated 

 feveral times with nearly the fame 

 remits. 



As plants feem to delight in foul 

 air, probably becaufe this air im- 

 pregnated with phlogifton affords 

 more proper nourifhment, viz, 

 phlogifton to the plant; it mufl of 

 courfe happen, that a plant draws 

 to it fo much the more phlogifton 



as 



