204 Analyjls of the Aw. 



Experiment LXXXIII. 



In February I poured on fix cubick inches 

 of powdered Oyjler-jhell, an equal quantity of 

 common white- wine Vinegar \ In five or fix 

 minutes it generated feventeen cubick inches 

 of Air, and in fome hours twelve cubick inches 

 more \ in ail twenty-nine inches. In nine 

 days it had {lowly reforbed 2 1 cubick inches 

 cf Air. The ninth day I poured warm water 

 into the vefiel x x, (Fig. 34.) and the follow- 

 ing day, when all was cool, I found that it 

 had reforbed the remaining eight cubick inches. 

 Hence we fee, that warmth will fcmetimes 

 promote a reforbing as well as a generating 

 flate, viz. by raifing the reforbing fumes, as 

 will appear more hereafter. 



Half a cubick inch of OyJler-JJjell, and a 

 cubick inch of 0/7 of Vitriol, generated thirty- 

 two cubick inches of Air. 



OyJicrJJ:el/ y and two cubick inches of four 

 Rennet, of a Calf's ftomach, generated in 

 four days eleven cubick inches. But Oy/ler- 

 fhcll with fome of the liquor of a Calf's fto- 

 mach, which had fed much upon Hay, did 

 not crenerate air. It was the fame with Oyjler- 

 (hell and Ox-gall, Urine and Spittle. 



Half 



