Analyfis of the Air. 307 



of the fumes as in the firft cafe 5 becaufe here 

 the fulphureous fumes were much blended 

 with watry vapours : Por we find in Experi- 

 ment 97, that fix times more was wafted in 

 fumes in this cafe than in the other 5 and there- 

 fore probably a good part of thecubick inch of 

 water afcended with the vapour, and might 

 thereby weaken its abforbing power: For 

 watry vapours do not abforb elaftick air 

 as the fulphureous ones do ; tho' by Expert 

 ment 120 ,a Candle abforbed more in a damp 

 than in a dry air. 



And 'tis from thefe diluting watry vapours 

 that filings of Iron with Spirit of Nitre and 

 Water, abforbed lefs than with Spirit of Nitre 

 alone, for in both cafes it abforbs more than 



it generates. 



Thus alfo oil of Vitriol and Chalk ge- 

 nerate air, their fume being fmall, and that 

 much diluted with the watry vapours m the 

 Chalk. 



But Lime with oil of Vitriol, or White- 

 Wine Vinegar or Water, make a confiderable 

 fume, and abforb good quantities of air : 

 Lime alone left to flaken gradually, as it 

 makes no fume, fo it abforbs no air. 



We fee in Experiment 92? where the fer~ 

 X % ment 



