154 



MR. CHARLES DE WATTEVILLE ON FLAME SPECTRA. 



ZINC. 

 Salt used : Zinc Chloride. 



* It cannot be distinguished which particular one of these two lines is present in the flame. 



t This third component of the triplet is very feeble in the flame, if it exists at all. Possibly a longer 

 exposure would have brought it out clearly. The homologous line at X 3403-74 is seen on the 

 photographs of the cadmium flame spectrum. 



CADMIUM. 

 Salt used : Cadmium Chloride. 



