COMPOSITION OF THE ATMOSPHERE. 11 







Air of Paris. 







Oxygen. 





Oxygen. 



By weight, 21-93 



Calculated to volume * . 



.. 20*729 





2.yo6 



)> 



.. 20*856 





23-03 



„ 



.. 20-828 





23-01 



» 



.. 20*8lO 





23-00 



„ 



.. 20-802 





23*00 



>j 



.. 20-802 





23-08 



» 



.. 20-826 





22-07 



„ 



.. 20*864 





22-89 



)> 



.. 20-701 



Mean 23*07 20*864 



From the Faulhorn. 



Oxygen. 

 Calculated to Tolume * ... 20-766 

 „ ... 20*882 



,1 ... 20-774 



„ ... 20-674 



» ... 20774 



Ey weight, 



22-96 



„ 



23*09 



>> 



22*97 



)> 



22-86 



» 



22'97 



Mean 



22-97 



20*774 



Again we find a smaller amount on elevated places. 



Oxygen. 



^ 20*867 

 20-750 

 20-790 



Brunner found J 20*842 



20-812 

 20*837 



V 2o-8i8 



Although, for reasons given, I prefer the actual numbers 

 obtained by Regnault, the comparative numbers in Paris 

 and in the Faulhorn are equally valuable for the purpose 

 of showing differences. These analyses were made by 

 weighing. 



Dr. W. A. Miller examined air collected during a balloon 

 ascent, in August 1852, at a height of 18,000 feet, and also 



* The results are calculated into volumes, taking i '1057, the number taken 

 by the analysts as the sp. gr. of oxygen. 



