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doors with one of nitrous air occu- 

 pied 1.06^-; whereas that expofed 

 to the fun occupied i.oSy. 



I muft however acknowledge? that 

 this experiment ought to be repeated 

 more than once, to put the fact out 

 of any doubt. I made it the very 

 laft day of my flay in the country., 

 and thus had no time to repeat it. 



T 2 SEC- 



