[ 41 ] 

 tracked from metals by vitriolic 

 acid, 



The property of plants is demon- 

 fixated in experiments 41, 51, 56, 



57> 58, 59- 



SECTION X. 



All plants yield a more or lefs quantity 

 of dephlogifticated air in the day- 

 time) when growing in the open 

 air j and free from darkjhade. 



THE quantity of dephlogifticated 

 air, and even the quality of it, which 

 the leaves of plants give, feems 

 to be different in different plants: 

 though, indeed, this may depend 

 in a great meafure upon fome par- 

 ticular 



