i 3* i 



fire was very bad, and that obtained 

 in the fun was dephiogiilicated air. 



A jar full of walnut tree leaves 

 was placed under the fhade of other 

 plants, and near a wall, fo that no 

 rays of the fun could reach it. It 

 flood there the whole day, fo that 

 the water in the jar had received 

 there about the fame degree of 

 warmth as the furrounding air (the 

 thermometer being then at y 6°); 

 the air obtained was worfe than com- 

 mon air, whereas the air obtained 

 from other jars kept in the fun- 

 fhine during fuch a little time that 

 the water had by no means received 

 a degree of warmth approaching 

 that of the atmofphere, was fine de~ 

 phlogirticated air. 



No dephlogifticated air is ob- 

 tained in a warm room, if the fun 

 does not fhine upon the jar contain-^ 

 ing the leaves. 



SEC^ 



