t 63 ] 



tlty of common air, whofe teft was 

 at that time fuch, that one meafure 

 of it with one of nitrous air occu- 

 pied i.o6|i In the other jar was 

 let up the fame quantity of air 

 fouled by refpiration, of which one 

 meafure with one meafure of ni- 

 trous air occupied 1.34* 



The air of both jars was exa- 

 mined at two o'clock, when I found 

 the common air fo much improved, 

 that one meafure of it with one of 

 nitrous air occupied 1.00. The 

 foul air was fo much mended, that 

 it was near as good as the atmo- 

 fpheric air, for one meafure of it 

 with one of nitrous air occupied 

 now 1.08^. 



I examined both airs again at 

 four o'clock, when the common air 

 was full more improved; for one 

 meafure of it with one of nitrous 



air 



