SMITHSONIAN CONTRIBUTIONS To KNOWLEDGE. 

 _ X196 



/ 



A DETERMINATION OF THE RATIO (>) OF THE 



SPECIFIC HEATS AT CONSTANT PRESSURE 



AND AT CONSTANT VOLUME FOR AIR, 



OXYGEN, CARBON-DIOXIDE. 



AND HYDROGEN. 



BV 



O. LUMMER AND E. PRINGSHEIM. 



CITY OF WASHIXGTO]<r ; 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION. 



1898. 



