258 dnalyjis of the Air. 



more air into the bladder twelve times du- 

 ring the hour ; yet fince he was almoft fuf- 

 focated in lefs than two minutes, by breath- 

 ing of himfelf to and fro the firfl air in the 

 bladder, he would, by Experiment 106. on 

 Candles, have died in lefs than two minutes, 

 when one fourth of the old air remained in 

 the bladder, immediately to taint die new 

 admitted air from a man's lungs; fo that his 

 continuing to live through the whole hour, 

 muft be owing to the forcible dilatation of 

 the lungs, by compreffing the bladder, and 

 not to the vivifying fpirit of air. For with- 

 out that forcible dilatation, he had, after the 

 firfl five or ten minutes, been certainly dead 

 in lefs than a minute, when his pulfe was fo 

 very low and weak, which I did not find to be 

 revived barely by blowing three parts in four 

 of new air from the lungs of a man into the 

 bladder : But it was conftantly roufed and 

 quickned, whenever I increafed the dilata- 

 tions of the lungs, by comprefllng the bladder 

 more vigoroufly ; and that whether it was at 

 the beginning or end of each five minutes, 

 yet it was more eafily quickned, when the 

 bladder was at any time newly filled, than 

 when it was near empty. 



From 



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