ON WAVE-LENGTH TABLES OF THE SPECTRA OF THE ELEMExNTS. 401 



Gold (Akc Spectrum) — eontinued. 



Aluminium (Arc Spectrum). 

 Kayser and Eunge ('Ueber die Spectren der Elemente,' Pt. VI. 

 § See Silver. J See Copper. 



Berlin, 1892.) 



1893. 



r D 



