SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE. 

 980 



ON THE DENSITIES 



OF 



OXYGEN AND HYDROGEN, 



AND ON THE 



RATIO OF THEIR ATOMIC 



WEIGHTS. 



BY 



EDWARD W. MORLEY, Ph.D. 



CITY OF WASHINGTON : 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION. 



1895. 



i^ 



/ 



