SMITHSONIAN CONTRIBUTIONS TO KNOWLEDGE 

 1413 



ON THE ABSORPTION AND EMISSION OF 

 AIR AND ITS INGREDIENTS FOR LIGHT OF 

 WAVE-LENGTHS FROM 250.. TO loO; 



)ix.li 



BY 



VICTOR SCHUMANN 



CITY OF WASHINGTON 

 PUBLISHED BY THE SMITHSONIAN INSTITUTION 



1903 



I 



