[ 222 ] 

 Quan- 

 tity of The teft of the common air was 



the two 



airsdef- a t that time, by Abbe Fontana's 



troyed. ' 



1 73*- method, 1.96 ; 2.25; 3.26^. 



See alfo Experiments 40 and 41. 



SECTION IX. 



Experiments Jhewing that acrid-} 

 Jlinking, and poifonous plants yield 

 by day -time as good dephlogifticated 

 air as any others, 



61 A plant of Hyofcyamus was 

 expofed in the ordinary way in a 

 jar full of water in the fun-mine, 

 from twelve till five o'clock; a great 

 deal of fine dephlogifticated air was 

 obtained, in which the flame of a 

 wax-taper was very brilliant. One 

 7 meafure 



