[ 286 ] 



I25« The common air ufed for 

 this experiment proved to be of 

 fuch a degree of goodnefs, that in ' 

 fix different trials, made one after 

 another in the expeditious manner 

 explained, the two meafures occu^ 

 pied i.o6j exactly; whereas the 

 fame common air with the fame ni- 

 trous air, after Handing an hour in 

 the five different veffels, gave the 

 very different refults expreffed in 

 p. 287. 



By repeating the fame experi- 

 ments at different times, the fame 

 refult was obtained as to the differ- 

 ence of the remaining bulk of airs 



o 



kept Handing in veffels of different 

 diameters ; but there was common- 

 ly a difference of fome fubdivi- 

 fions even in the experiments made 

 with the fame glafies* 



The 



