616 



Scientific Proceedings, Royal DuMin Society. 



A line X 3470'8 appears strongly with both gold and carbon in oxygen 

 without self-induction. Exner and Haschek have a line A 3471"1 of intensity 

 1 in their tables of oxygen, but mark it N ? As there is only a very faint 

 indication of this line when carbon and gold are sparked in air, it would 

 seem that it is not a nitrogen line, and must be due to oxygen. 



The ultimate lines of manganese, X 2801-3, X 2798-5, and X 2795-3, 

 show in the spectra, owing to a trace of this element being carried over 

 by the oxygen, notwithstanding the large number of absorption-tubes used. 



PrincyMl Lines of Oxygen. 



