f- foo 
experiments 110, TII. 113, 114, 
and 1153 and yetI found this very 
air to explode with fuch a loud re- 
port, even ina cylindrical jar, that 
my fervant, who kept the glafs in 
his hands, thought it was abfolute- 
ly broken. This event gave me no 
{mall concern for a method of try- 
ing the goodnefs of airs, which I! 
ad already confidered as infallible. 
However, I had ftill fome hopes left 
that |had committed fome blunder 
in this experiment; and_ very 
luckily I had ftill at hand the 
jar which contained the perfcaria 
wrens with the inflammable air; 
but I was forry to find that my fuf- 
picion was but too well grounded; 
for this air gave, by two different 
trials, the followi ing refult; one 
meafure of it with one of nitrous 
air occupied 0.95; and with two 
meafures 
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