



m 



3 



6 



Anatyfis of the Air. 



tuted the new elaftick air were thereby 

 thrown off in greater plenty, and perhaps 

 with a greater degree of elafticity, which 

 might carry them beyond the fphcre of at- 

 traction of the fulphureous particles. 



This is further illuftrated by Experiment 

 94, where filings of Iron and oil of Vitriol 

 alone generated very little; but the like 

 quantities of filings of Iron, with an equal 

 quantity of water, generated 43 cubick inches 

 of air j and the like ingredients, with three 

 times that quantity of water, generated 108 

 cubick inches. 



And tho' the quantity of the afcendin 

 fumes (which was in this cafe of the Walton 

 mineral very great) muft needs in their afcent 

 abforb a good deal of elaftick air, for they 

 will abforb air 3 yet if where the ferment was 

 fo much greater, more elaftick air was ge- 

 nerated 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. 3 5 . ) when I mea- 

 lured 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 denfity 



of 



(T 



o 









