‘ee 
make.on the different kinds. of air, 
‘induce me to believe that we touch 
at the happy moment, at whicli a 
very eafy and little expenfive me- 
thod of producing this beneficial 
fluid, in any quantity wanted, will 
be produced for the cure of many 
ar si aces 
reached the ‘public, and that this 
important defderatum in medicine 
is difcovered. 
Abbe Fontana found t that an dni- 
mal breathing-in either 
ae oh <° 
on O; 
for refpiration by communicating ‘ to 
it a confiderable - portion ¢ of fixed air, 
“which is generated i in our body, : au0 
thrown out. by the lungs" as 2 : 
‘mentitious, ‘This fixed air is | 
: be: se 
atisfaction to 
my | 
