Anatyfis of the Air. 309 



Ox gall, and fpittlc, and urine; Oyfter-fliell 

 and Milk generated a little air, but Limon 

 juice and Milk did at the fame time abforb a 

 little : Thus we fee that the variety of mix- 

 tures in the ftomach appear fometimes to 

 generate, and fometimes to abforb air ; that 

 is, there is fometimes more generated than 

 abforbed, and fometimes an equal quantity, 

 and fometimes lefs according to the propor- 

 tion the generating power of the diffolving 

 aliments bears to the abforbing power of the 

 fumes which arife from them. In a true kindly 

 digeftion, the generating power exceeds the 

 abforbing power but a little : But whenever 

 the digeftion deviates in forne degree from 

 this natural ftate, to generate a greater pro- 

 portion of elaftick air, then are we trou- 

 bled more or lefs with diftending Flatus's 

 I had intended to make thefe and many more 

 Experiments relating to the nature of digef- 

 tion in a warmth equal to that ofthe ftomach, 

 but have been hitherto prevented by purfu- 

 ing other Experiments-. 



Thus we fee that all thefe mixtures do 



in fermentation generate elaftick air, but 



thofe which emit thick fumes, charged with 



fulphur, reforb more than was generated 



X $ in 



