3 o 8 Analyfis of the Air. 



will abforb air) yet if, where the ferment was 

 fo much greater, more elaftick air was gene- 

 rated by the fermenting mixture, than was 

 abforbed by the afcending fumes, then the 

 quantity of new generated air, which I found 

 between zz and aa, (Fig. 35.) when I mea- 

 fured it, was equal to the excefs of what was 

 generated above what was abforbed. 



And probably in this cafe the air was not 

 abforbed fo much in proportion to the den- 

 fity of the fames, as in the firft cafe ; becaufe 

 here the fulphureous fumes were much 

 blended with watry vapours : for we find in 

 Experiment 97. that fix times more was 

 wafted in fumes in this cafe, than in the 

 other ; and therefore probably a good part 

 of the cubick inch of water afcended with 

 the vapour, and might thereby weaken its 

 abforbing power : For watry vapours do not 

 abfoib elaftick air as the fulphureous ones do ; 

 tho' by Experiment 120. a Candle abforbed 

 more in a damp than in a dry air. 



And it is from thefe diluting watry vapours, 

 that filings of Iron, with fpirit of Nitre and 

 Water, abforbed lefs than with fpirit of Nitre 

 alone 3 for in both cafes it abforbs more than 



it generates. 



Thus 



