A STUDY OF 

 THE ABSORPTION SPECTRA 



OF 



SOLUTIONS OF CERTAIN SALTS OF POTASSIUM, COBALT, NICKEL, COPPER, 



CHROMIUM, ERBIUM, PRASEODYMIUM, NEOBYMIUM, AND 



URANIUM AS AFFECTED BY CHEMICAL AGENTS 



AND BY TEMPERATURE 



BY 

 HAERY C. JONES and W. W. STRONG 



WASHINGTON, D. C. 

 Published by the Carnegie Institution op Washington 



1910 



