ON WATE-LENGTH TABLES OF THE SPECTRA OF THE ELEMENTS. 401 



Ikon —continued. 



• 4i"4-3— Kirchhoff.- t ■K82-9-Kirchhoff. J 4325-G— Kirchhoff. § 430G-9— Kirchhoff. 

 Ii Observed also by Lecoq de Boisbaudran in the Spark Spectrum of Ferric Chloride solution. 



1884. d d 



