■ [ xlvi 3 



make on the different kinds of air> 

 induce me to believe that we touch 

 at the happy moment, at which a 

 Very eafy and little expenlive me- 

 thod of producing this beneficial 

 fluids in any quantity wanted, will 

 be produced for the cure of many 

 difeafes. 



I have the great fatisfaction to 

 inform the reader, that my predic- 

 tion is fulfilled even before it hath 

 reached the public, and that this 

 important defideratum in medicine 

 is difcovered. 



Abbe Fontana found that an ani- 

 mal breathing-in either common or 

 dephlogifticated air renders it unfit 

 for refpiration by communicating to 

 it a con fider able portion of fixed air, 

 which is generated in our body, and 

 thrown out by the lungs as excre- 

 mentitious. This fixed air is eafily 



abforbed 



