C 2I 3 ] 



Quan- 



candle could not burn in it : wnere-% °f 



the two 



as two handfuls of walnut-leavesa'nsdef- 



troyed. 



placed in the fun-fliine had yielded 

 in the fame time a great quantity 

 of very pure dephlogifticated air, 

 whofe teir was T.69 ; 1.82; 1.69; 

 i-54 ; 2.35 ; 3.34. 466 



47 . At the fame time two hand- 

 fuls of oak leaves were in the fame 

 manner placed under the fame 

 bufhes ; the air of thefe leaves was 

 remarkably foul, for it was very 

 little diminifhed by nitrous air. 



48. The fame was done with 

 willow leaves ; the air obtained was 

 alfo of a bad quality, but better 

 than that of oak or walnut-leaves. 



49. The fame was alfo done 

 with leaves of elm-tree ; the air ob- 

 tained w r as very foul, as one meafure 

 of it with one of nitrous air occu- 

 pied 1.90. 



P 3 50. I 



