3 i o Jnalyjis of the Ah. 



be reforbed again, by the fumes which arife 

 with them ; for we fee in Experiment 83. 

 that Oyfter-fhell and Vinegar, Oyfter-fhell 

 and Rennet, Oyfter-fhell and Orange-juice, 

 Rennet alone, Rennet and Bread, firft gene- 

 rated, and then abforbed air ; but Oyfter-fhell 

 withfome of the liquor of a Calf's ftomach, 

 which had fed much upon Hay, did not gene- 

 rate air; and it was the fame with Oyfter-fhell 

 and Ox-gall, and Spittle and Urine - y Oyfter- 

 fhell and Milk generated a little air, but Li- 

 mon-juice and Milk did at the fame time ab- 

 forb a little : Thus we fee, that the variety of 

 mixtures in the ftomach appear fometimesto 

 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 diflblving 

 ailments 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 when- 

 ever the digeftiori deviates in fome degree 

 from this natural irate, to generate a greater 

 proportion of elaftick air, then are we trou- 

 bled more or lets with diftending Flatus's. I 

 had ii . ] to make thtfe, and many more, 



Expe- 





