[ i8 5 1 



SECTION II. 



Experiments Jhewing in general the 

 degree of goodnefs or purity of the 

 dephlogijlie cited air which the leaves 

 of plants yield in the fun-fhine, 



Exp. I. TWO handfuls of grafs,^™^ 

 the roots being cut off, were put in^^ 

 an inverted jar holding a gallon, tro > ecL 

 filled with pump- water, in the fun 

 between eleven and two o' clock ; 

 a great quantity of dephlogifticated 

 air was fettled at the inverted bottom 

 of the jar, in which the flame of 

 a wax-taper became very brilliant. 

 By the teft of nitrous air, according 

 to the prefent method of Abbe Fon- 

 tana, the remit was as follows : two 

 meafures of it being let up in the 



glafs 



