Cofnparative Weights of Gaseous Elements. 



Figure 5. 



Hydrogen. 



Nitroo-en. 



Wt. of 1 

 ^ ol. = 14. 



Chlorine. 



Weight of 1 vol. = 1. 



Oxygen 



Wt. of 1 

 vol. =16. 



Fluorine 



(428) 



