346 Abbe fontana’s Experiments and 
there feems to be reafon enough to fufpedl, that the 
bladder might poffibly alter the nature of inflammable 
air, and render it more fit for refpiration, notwithiland- 
ing that the mere contact of the bladder feemed not fuf- 
ficient to produce fitch an e fleet, which is irreconcileable 
with other facts : yet fome reafon muft certainly exift 
fufficient to explain Mr. sheele’s experiments, which 
diredtly prove that the inflammable air contained in 
bladders can be breathed with impunity. 
When I breathed this air according to Mr. sheele’s 
manner eleven times fucceflively, I not only breathed 
it without any inconvenience, but obferved that the firfl: 
infpirations were even pleating; more l'o than when 
I breathed common air. I felt a facility of dilating 
the bread:, as if the air yvas as light as that at the 
top of high mountains. I never felt a like fenfation, 
even when I have breathed the purefl dephlogifticated 
air. I do not think that I was miflaken in thefe fenfa- 
tions, or gave a loofe to imagination, becaufe I was rather 
prejudiced againfl: the inflammable air, after I had feen 
various animals immediately die in it, and I was rather 
( 
fearful when I firfl began to breathe it: befides, this fa- 
cility of breathing it, accompanied with a pleating fenfa- 
tion, I have conftantly obferved in all my experiments 
upon this fubjedt. 
This 
