330 



REPORT — 1805. 



S [LVEE — continued. 



Double. 



Iron. 



OXTHYDEOGBN (FLAME SPECTEUM). 



Hartley : 'Phil. Trans.' clxxxv. 199 (1894). 



t Present also in the spectrum of ferric oxide. 



Due to Manganese. R. A line marked R is one of Rowland's ' normal ' lines. 



