MtJLLER. 



Phil. Ma?. Ser. 6, Vol. 42, PL XIY. 



Hg L-Spectritm. __ 7*5 times enlarged. 



Complete Spectrogram. 1*5 times enlarged. 



- 



| 



# 



k /3 cC /3 fr 

 Cu. Hg. 



Centre 





Oa K- Spectrum. 14 times enlarged. 



